电源管理
子分类
产品（2819)
BQ7694204PFBR - 10-Series Li-Ion Battery Monitor | TI
The Texas Instruments BQ7694204PFBR is a high-accuracy 3-series to 10-series battery monitor and protector IC for Li-ion, Li-polymer, and LiFePO4 battery packs, housed in a 48-pin TQFP (7x7 mm) package. The '04' orderable suffix denotes the specific cell-count and feature configuration of the BQ76942 family, supporting up to 10 series cells with integrated analog front-end, protection, and balancing functions. The device includes a high-accuracy coulomb-counter ADC, on-chip cell-balancing FET drivers, and a configurable hardware protection subsystem. A battery monitor IC is a mixed-signal analog front-end that continuously samples individual cell voltages, pack current, and temperature to compute state-of-charge (SOC), state-of-health (SOH), and to trigger pack-level protections such as over-voltage, under-voltage, over-current, and short-circuit. Within the broader hierarchy, a battery monitor sits below the battery management system (BMS) IC and above discrete analog front-ends; BQ7694204PFBR integrates the AFE, secondary protection, and the high-side charge/discharge FET drivers into a single chip, replacing what traditionally required multiple discrete components. This integration reduces BOM count, PCB area, and software complexity in multi-cell battery packs. Key features of the BQ7694204PFBR include 16-bit voltage measurement resolution, on-board charge/discharge FET drivers with built-in precharge/pre-discharge control, integrated cell-balancing FETs, hardware-configurable protection thresholds independent of firmware, and support for both standalone (no host MCU) and host-controlled operation. The wide common-mode input range allows direct cell-voltage sensing up to 55 V, eliminating external resistive dividers on each cell. Architecturally, the BQ7694204PFBR uses a dedicated state-machine plus registers approach so that critical protections can react within microseconds even before any host MCU boots. Communication to the host is via I2C or SPI, and an isolated daisy-chain interface (using companion BQ79600 or BQ79601-Q1 transceivers) enables 100-series stacks for higher-voltage traction packs. Typical applications include e-bike and e-scooter battery packs, 24V/36V cordless power tools, uninterruptible power supplies (UPS), telecom backup battery racks, portable medical carts, and 48V light-electric-vehicle packs. The integrated precharge driver also simplifies hot-plug and capacitive-load designs. When designing with the BQ7694204PFBR, allocate sufficient PCB copper under the thermal pad of the TQFP-48; sustained balancing currents at high cell-count imbalance can dissipate 500 mW or more. Use TI's BQSTUDIO evaluation tool to configure protection thresholds and calibration data during development. This page synthesizes distributor pricing, drop-in same-package alternatives from the BQ76942 family, application guidance, and design notes not assembled in the manufacturer datasheet.
BQ76952 - 3S-16S Battery Monitor & Protector | Texas Instruments
The Texas Instruments BQ76952 is a highly integrated, high-accuracy battery monitor and protector for 3-series to 16-series Li-ion, Li-polymer, and LiFePO4 battery packs. It combines a high-accuracy monitoring system, a highly configurable protection subsystem, and autonomous or host-controlled cell balancing in a 48-pin TQFP (7x7 mm) package. A battery monitor and protector is an integrated circuit at the heart of a battery management system (BMS) that measures individual cell voltages, pack current, and temperature, and provides protection against overvoltage, undervoltage, overcurrent, and overtemperature faults. Within the BMS hierarchy (battery pack -> BMS AFE -> analog front end -> power management IC), the BQ76952 acts as the AFE, communicating with a host microcontroller for state-of-charge estimation, balancing, and safety. Integrated high-side charge-pump NFET drivers control external power FETs for pack-level disconnect. Key features include support for 3S-16S Li-ion, Li-polymer, and LiFePO4 chemistries; a configurable protection subsystem covering current, voltage, and temperature faults; autonomous or host-controlled cell balancing; integrated high-side charge-pump NFET drivers; and temperature sensing through external thermistors plus internal die measurement. According to the BQ76952 Technical Reference Manual, up to 9 thermistors are supported in addition to internal die temperature. The standard BQ76952 uses I2C communication with CRC disabled by default; the BQ7695202 variant enables CRC on I2C by default. Architecturally, the device pairs a precision differential ADC (each cell voltage measured differentially, VC1-VC0 through VC16-VC15) with a dedicated protection engine that operates autonomously during critical faults, so protection does not depend on the host. TI application note SLUAAF2 documents pin-equivalent diagrams across the BQ76952, BQ76942, and BQ769142 family, confirming pin-compatible drop-in migration: the BQ76942 is optimized for up to 10S packs, and the BQ769142 is functionally the same as the BQ76952 except I2C CRC is enabled by default. Typical applications include e-bike and e-scooter packs, power tool packs, energy storage systems, UPS backup, portable equipment, and industrial robots. High-side NFET drivers minimize external components while configurable protections address short circuit, overcurrent, voltage, and temperature events. Design tip: size protection FETs for pack current, terminate unused high-voltage pins per the TI datasheet recommendations, and confirm I2C CRC requirements before choosing between BQ76952, BQ769142, and BQ7695202 variants.
BQ7695202PFBR - 3-16S Battery Monitor Protector | Texas Instruments
The Texas Instruments BQ7695202PFBR is a 3-series to 16-series high-accuracy battery monitor and protector for Li-ion, Li-polymer, and LiFePO4 battery packs, housed in a 48-pin TQFP (PFB, 7x7 mm) package rated from -40C to +85C. A battery monitor and protector IC (also called a battery management IC or BMS AFE, analog front end) sits at the core of multi-cell battery packs. It measures individual cell voltages, pack current, and temperature, then drives external protection FETs to prevent overcharge, over-discharge, overcurrent, and short-circuit conditions. In the power-management hierarchy it belongs to the battery management (PMIC - Battery Management) class of power management ICs. Key features of the BQ7695202 include support for 3 to 16 series cells, high-accuracy cell voltage monitoring for precise state-of-charge and state-of-health estimation, integrated cell balancing, and integrated high-side charge-pump NFET drivers that eliminate the need for external driver circuitry. The part also integrates two programmable LDO regulators for powering external system components such as microcontrollers or fuel-gauge peripherals. Technically, the device integrates a host communication peripheral supporting 400-kHz I2C, SPI, and HDQ one-wire standards, giving designers flexibility in how the pack connects to a system-side MCU. The protector state machine operates autonomously so protection decisions continue even if host communication is lost, an important safety property for lithium-based packs. High-accuracy measurement reduces guard bands, allowing fuller use of the battery capacity. Typical applications include e-bikes and light electric vehicles, power tools, portable instrumentation, UPS and energy-storage modules, and robotic or drone battery packs using Li-ion, Li-polymer, or LiFePO4 chemistries in the 3S to 16S range. Design consideration: because the BQ76952 drives high-side NFETs through an internal charge pump, verify FET selection and gate-charge limits against the datasheet, and follow TI layout guidance for Kelvin-sensed cell connections to preserve measurement accuracy. This page synthesizes verified distributor listings, drop-in same-family alternatives, and practical design notes not found in the manufacturer datasheet alone.
BQ76952PFBR - 3S-16S High-Accuracy Battery Monitor | TI
The Texas Instruments BQ76952PFBR is a 3-series to 16-series high-accuracy battery monitor and protector for Li-Ion, Li-Polymer, and LiFePO4 battery packs, operating from 4.7 V to 80 V and housed in a 48-pin TQFP (7x7 mm) package. It integrates cell voltage monitoring, coulomb counting support, cell balancing, and integrated high-side charge-pump NFET drivers for charge and discharge protection FETs. A battery monitor and protector is a power-management IC at the core of a battery management system (BMS), sitting between the multi-cell stack and the system host. It measures each series cell's voltage and pack current, enforces safe operating limits through hardware protections, and communicates status to a microcontroller over I2C, SPI, or HDQ. In the system hierarchy, it belongs to battery management ICs within power management semiconductors. Key features include support for 3 to 16 series cells with high measurement accuracy, protection of overvoltage, undervoltage, overcurrent, short circuit, and overtemperature conditions, integrated cell balancing FETs, and dual programmable LDOs that supply external system circuitry. High-side driver architecture keeps the pack negative terminal at ground, simplifying system grounding. Technically, the device provides 16 cell-voltage input channels and a stack operating range up to 80 V, with a host communication peripheral supporting 400-kHz I2C, SPI, and HDQ one-wire standards, allowing designers to match the interface to the host MCU. Hardware protections operate autonomously even if the host is absent, meeting functional-safety-oriented design patterns for lithium battery packs. Typical applications include 48 V server and telecom backup batteries, e-bike and light electric vehicle packs, portable power stations, and industrial energy storage modules where 10S to 16S Li-ion or LiFePO4 chemistries are common. A key design consideration is the VC0X/VC10X filter-capacitor connections: follow TI's recommended RC input filtering to preserve accuracy under switching-load transients, and verify REG1/REG2 loading budget against external system loads. This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not consolidated in the manufacturer datasheet.
BQ76952Q-Q1 - 3-16S Battery Monitor AEC-Q100 | Texas Instruments
The Texas Instruments BQ76952Q-Q1 is an automotive-grade, highly accurate battery monitor and protector for 3-series to 16-series Li-ion, Li-polymer, and LiFePO4 battery packs. It integrates cell voltage monitoring, a configurable protection subsystem, autonomous or host-controlled cell balancing, and high-side charge-pump NFET drivers in a 48-pin TQFP (7x7 mm) package, qualified to AEC-Q100 for automotive BMS designs. A battery monitor and protector is the analog front end (AFE) of a battery management system: it measures each cell's voltage and pack current, detects overvoltage, undervoltage, overcurrent, and over-temperature fault conditions, and drives protection FETs to isolate the pack. It sits above the cell connections and below the pack MCU in the BMS hierarchy, offloading safety-critical measurement and protection from the host processor. Key features include support for up to 16 series cells, an extensive protection suite covering voltage, temperature, current, and internal diagnostics, two independent ADCs for simultaneous monitoring, and an integrated charge pump enabling high-side NFET protection with optional autonomous recovery. High-accuracy cell voltage monitoring enables precise state-of-charge and state-of-health estimation, critical for maximizing usable capacity and pack lifetime. Architecturally, the device can operate autonomously in a stand-alone mode or under host control via I2C/SPI communication with an external MCU, providing flexibility between cost-optimized and feature-rich BMS topologies. The high-side FET driver topology keeps the load negative terminal at pack ground, simplifying system-level design versus low-side approaches. Typical applications include electric vehicle (EV) and hybrid battery packs, e-bikes and e-scooters, energy storage systems (ESS), UPS battery backup, and power tools. The Q1 qualification and wide automotive temperature support make it a fit for traction and auxiliary battery packs. Design consideration: configure the protection thresholds and balancing registers carefully in firmware, and follow TI's pin-equivalent guidance (SLUAAF2) for the high-voltage cell input pins, which include specialized internal circuitry and require proper series input resistors.
BQ7791500PWR - 3-5S Ultra-Low Power Primary Protector | TI
The Texas Instruments BQ7791500PWR is a 3-series to 5-series stackable ultra-low-power primary battery protection IC for Lithium Ion / Lithium Polymer packs, housed in a 24-pin TSSOP (PW) package. It integrates autonomous cell balancing, a HIBERNATE low-quiescent mode, and primary-side overvoltage, undervoltage, overcurrent, and short-circuit protection with programmable thresholds. A primary battery protector is a discrete analog front-end IC that monitors each cell of a multi-cell Li-ion / Li-polymer stack and disconnects the pack via external FETs the instant a parameter crosses its safe operating window. The category sits below the secondary protector / gas-gauge ICs in the safety hierarchy - it does not perform coulomb counting or communicate over SMBus, but it provides the hardware-only safety net required by UL 2054, IEC 62133, and many end-product safety standards. BQ77915-class parts from TI are widely used as the first line of defense in power tools, e-bikes, UPS battery modules, and light-EV battery packs. Key features include support for 3S-5S cell stacks (with external scaling for higher counts via stacking), integrated 100 mA autonomous cell-balancing FETs that operate without a host controller, a HIBERNATE mode that drops the quiescent current to the single-digit microamp range during storage, and a CHG/DSG low-side output pair that drives external N-channel protection MOSFETs. The device is fully autonomous - no firmware, MCU, or SMBus interaction is required. Typical applications include consumer power-tool battery packs (where 5S packs up to 18.5 V are common), e-bike and e-scooter battery modules, portable UPS battery management, and light-EV / LEV traction packs. Compared with BQ769x0 series parts that add secondary protection and analog-to-digital telemetry, the BQ7791500 stays smaller and cheaper while delivering the primary protection required by safety certifications. When designing with this part, choose external N-channel FETs with Vds of at least 40 V for a 5S pack, place the BAT pin RC filter within 5 mm of the IC, and use a 100 kohm NTC on the TS pin for thermal protection. Note that BQ77915 has a sister part, BQ77915-Q1, that adds AEC-Q100 qualification for automotive-grade LEV applications. This page synthesizes distributor pricing, verified same-package drop-in alternatives, and practical design notes that are not found in the manufacturer datasheet alone.
BQ7791506PWR - 3-5S Ultra-Low Power Primary Protector | TI
The Texas Instruments BQ7791506PWR is a 3-series to 5-series stackable ultra-low-power primary protector with autonomous cell balancing, housed in a 24-pin TSSOP (PW) package. It integrates a full suite of voltage, current, and temperature protections for Lithium Ion/Polymer battery packs, with typical quiescent currents of 8 µA in NORMAL mode and 2 µA in HIBERNATE mode. Key specifications include an operating temperature range of -40°C to +85°C, scalable cell count from 3S to 5S in standalone mode (extensible via stacking), and autonomous smart passive cell balancing that removes cell-to-cell imbalance without external MCU intervention. The integrated protection set covers overvoltage, undervoltage, overcurrent in discharge, short circuit in discharge, and overtemperature, providing a complete hardware safety layer that complements secondary gas gauges such as the BQ27421-G1. The BQ7791506PWR uses an analog front-end plus dedicated hardware comparators with user-configurable thresholds via external resistors. Autonomous cell balancing fires when the delta between the highest and lowest cell exceeds a programmable offset, dissipating energy through external resistors until the cells converge. Stackability allows two devices to handle 6S to 10S packs without firmware changes. This hardware-only design means no firmware is required at the host, which reduces BOM complexity and improves functional safety certification paths. Typical applications include power tools, e-bikes, vacuum cleaners, robotic vacuum cleaners, e-mobility scooters, and uninterruptible power supplies where a dedicated hardware protector is preferred over an integrated fuel gauge. The HIBERNATE pin allows the host to force the device into sub-3 µA quiescent to extend shelf life of stored packs. Compared to fully integrated monitor-and-protect fuel gauges, the BQ7791506 leaves fuel gauging to a dedicated IC and focuses solely on the primary safety function. When designing with this device, always validate the sense resistor and cell-balancing resistor thermal budgets against the worst-case continuous balancing current. Use Kelvin-sense routing at the high-current ground return, and keep the cell-balancing traces wide enough to handle the programmed balancing current. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
BQ79600-Q1 - Automotive SPI/UART BMS Bridge IC | TI
The Texas Instruments BQ79600-Q1 is an automotive-grade communication bridge IC that interfaces a host microcontroller (MCU) with TI battery monitoring ICs such as the BQ7961X-Q1 family, in a 16-pin TSSOP (PW) package. It translates SPI or UART host-side traffic into TI's proprietary battery management daisy-chain protocol, enabling robust, scalable communication in battery management systems (BMS). A communication bridge IC is a specialized interface component that converts between different communication protocols or physical layers. In a BMS hierarchy, the bridge sits between the host MCU and the battery stack monitors, converting MCU SPI/UART commands into the daisy-chain physical layer. This architecture reduces wiring, improves reliability, and supports functional-safety requirements up to ASIL-D. Key features include a dual SPI/UART host interface, automatic host wakeup via an integrated sniff detector that monitors the daisy chain for fault tones, and a VIO pin for level shifting to match the MCU I/O rail. AEC-Q100 automotive qualification and functional-safety compliance (ASIL-D per TI documentation) make the device suitable for harsh vehicle environments and safety-critical systems. Technically, the BQ79600-Q1 implements TI's daisy-chain protocol with fault-tone detection: when the device is in SHUTDOWN mode and a stack device reports a fault, the sniff detector validates the tone and wakes the host automatically via the INH pin, eliminating continuous polling in low-power standby. After wake-up, NFAULT reports active faults to the host controller. Typical applications include EV and HEV battery packs, 12V/48V battery management systems, and stationary energy storage systems using TI monitors such as the BQ79616-Q1 or BQ79731-Q1. The 16-pin TSSOP (PW) package fits space-constrained automotive designs. Design tip: connect VIO to the MCU I/O supply rail for correct logic levels, select SPI or UART mode per MCU capability, and follow TI's daisy-chain termination guidelines for signal integrity.
BQ79616-Q1 - 16-S ASIL-D Battery Monitor | Texas Instruments
The Texas Instruments BQ79616-Q1 is a 16-S automotive precision battery monitor, balancer, and integrated hardware protector delivering high-accuracy cell voltage measurements in less than 200 microseconds for 6S to 16S lithium-ion battery modules. The device is offered in a 64-pin HTQFP (PAPR) package measuring 10x10 mm with an exposed thermal pad, supports ASIL-D functional safety compliance, and integrates a dedicated bus-bar BBP/BBN sense path as well as a proprietary daisy-chain interface for stacked high-voltage battery management systems in HEV/EV energy storage. A Battery Management IC (BMIC) such as the BQ79616-Q1 is a mixed-signal system IC that combines a precision analog front end, a SAR ADC, a digital post-filter, and cell-balancing FET drivers to monitor every series cell in a high-voltage battery pack. The BQ7961x family sits in the hierarchy battery monitor -> BMS AFE -> power management IC -> semiconductor; it provides the measurement plane on which the Battery Management System (BMS) host MCU executes state-of-charge, state-of-health, and cell-balancing algorithms. Within TI's broader BMS portfolio the BQ79616-Q1 is the 16-channel premium ASIL-D variant; the 14-channel BQ79614-Q1, 12-channel BQ79612-Q1, and bus-bar-only BQ79616H-Q1 share the same package footprint for PCB reuse. Key features include: high-accuracy cell voltage measurement with integrated post-ADC low-pass filtering for DC-like SOC calculation, integrated cell-balancing FET drivers, an isolated daisy-chain communication interface that supports stacking multiple devices along a high-voltage series string, GPIO and NPN drive outputs for pack-level hardware protection, and reference designs that operate directly on 6S-16S packs without an external AFE isolator. AEC-Q100 qualification and ASIL-D capable documentation suit the part to ISO 26262 safety-critical applications. The architecture pairs an integrated front-end RC filter network on every VC and CB channel with a precision delta-sigma ADC; commands and measurements traverse the proprietary daisy-chain up to a BQ79600-Q1 bridge device that translates the bus to UART/SPI for the host MCU. The part's flexibility supports both module-level and pack-level monitoring topologies used in modern xEV and grid-storage battery packs. Typical applications include automotive 400V and 800V traction-battery BMS modules (HEV/PHEV/BEV), stationary battery energy storage systems (BESS), industrial e-mobility (forklifts, e-scooters), and high-voltage server backup battery racks. The 16-channel support and ASIL-D compliance make it a strong fit where cell-count scaling and functional safety paperwork are mandatory. When designing with the BQ79616-Q1, allocate a dedicated NPN transistor for the LDOIN supply input and isolate the high-voltage battery node with a TVS and PTC as recommended in the BQ7961x-Q1 Design Recommendations application note. Unused VC and CB inputs must be tied per Section 10.2.1.2.1 of the datasheet to avoid ADC drift. This page synthesizes TI datasheet material, distributor pricing, drop-in pin-compatible alternatives within the BQ7961x family, and practical design notes not aggregated on a single vendor page.
BQ79616PAPRQ1 - 16S ASIL-D Automotive Battery Monitor | TI
The Texas Instruments BQ79616PAPRQ1 is a 16-series automotive precision battery monitor, balancer, and integrated hardware protector with ASIL-D functional-safety compliance, housed in a 64-pin HTQFP (PAP) 10x10 mm package and qualified to -40C to +125C ambient. Headline parameters: 16S cell channels, <200 us full-stack measurement time, and AEC-Q100 Grade 1 qualification. A battery monitor IC is a specialized integrated circuit that measures the voltage of individual cells in a series lithium-ion stack. It is the core sensing element of a battery management system (BMS), which sits within the broader power-management IC hierarchy. BMS devices ensure safe and efficient battery-pack operation in electric vehicles, hybrid vehicles, and grid energy-storage systems by providing data for state-of-charge and state-of-health estimation and by triggering protective actions. Key differentiating features include ASIL-D functional-safety compliance for ISO 26262-oriented designs, AEC-Q100 Grade 1 qualification, and integrated overvoltage, undervoltage, and overtemperature protection plus passive cell balancing. Pin-to-pin compatibility with the BQ79614-Q1 (14S) and BQ79612-Q1 (12S) variants enables hardware and software reuse across platforms with different cell counts. The integrated front-end supports simple low-voltage differential RC filters on cell input channels, reducing BOM cost versus designs that require high-voltage rated external components. Technically, the BQ79616PAPRQ1 uses a precision ADC architecture to measure all 16 cell voltages in less than 200 microseconds, enabling real-time protection decisions during high-rate charge and discharge events. A daisy-chain communication interface supports stacking multiple devices for higher total cell counts in large packs, and the 64-pin HTQFP package exposes a thermal pad that must be soldered with adequate thermal vias to keep junction temperature within limits during continuous balancing. Typical applications include automotive HEV/EV battery management for 16S modules, ASIL-level energy storage, and lithium-ion backup power stacks. In each case the fast total measurement time and high accuracy support real-time monitoring under demanding automotive conditions, and the shared 64-HTQFP footprint with the 14S and 12S family members enables one PCB to ship three product variants. A key design consideration is the differential RC filter sizing on cell inputs: filter values directly affect measurement settling time and accuracy, so follow the datasheet recommendations and place the device with adequate thermal vias under the HTQFP thermal pad. This page synthesizes verified distributor pricing, drop-in 64-HTQFP alternatives, and practical design notes not found in the manufacturer datasheet, with all data freshness stated as of 2026-10-07.
BQ79656PAPRQ1 - 16S ASIL-D Battery Monitor, Balancer | TI
The Texas Instruments BQ79656PAPRQ1 is an AEC-Q1 qualified, ASIL-D compliant automotive 16-cell (16S) precision battery monitor, cell balancer and integrated hardware protector with integrated shunt-resistor current sensing, housed in a 64-pin HTQFP (PAP, 10x10 mm) package rated from -40C to +125C. A battery monitor IC is a mixed-signal power-management device that measures individual cell voltages, temperatures and pack current in multi-cell battery stacks. It sits at the lowest level of the battery management system (BMS) hierarchy, feeding a pack-level controller over a daisy-chained differential bus. Accurate cell measurement is the foundation of state-of-charge estimation, cell balancing, fault protection and functional-safety compliance in automotive and industrial energy storage systems. Key features include high-accuracy cell voltage measurement of up to 16 series cells, a complete stack scan in less than 200 us, a passive balancing architecture supporting up to 240 mA balancing current per TI listing, and an integrated hardware protector for autonomous overvoltage and undervoltage fault response. The integrated shunt current-sense front end removes the need for a separate current-sense device in many BMS topologies. The BQ7965x-Q1 family (BQ79656-Q1/16S, BQ79654-Q1/14S, BQ79652-Q1/12S) shares a common architecture and supports stack configurations from a minimum of 6S, so a single PCB design can be scaled across battery module sizes. The integrated front-end filters enable simple, low-voltage-rated differential daisy-chain communication between stacked devices, improving EMC robustness in high-voltage traction inverters and packs. Functional-safety compliance to ASIL-D targets supports ISO 26262-driven designs. Typical applications include electric-vehicle (EV) and hybrid (HEV) traction battery modules, 48V mild-hybrid systems, energy storage systems, and e-mobility packs such as e-bikes and light electric vehicles where 16S monitoring, balancing and safety protection are required. Design-wise, follow TI's daisy-chain layout guidance: use twisted or tightly coupled differential bus pairs, place the integrated front-end filter components close to the device pins, and verify balancing thermal dissipation in the 10x10 mm HTQFP footprint. This page adds information gain beyond the manufacturer datasheet: distributor availability comparison, drop-in same-family alternatives, and application-specific design notes not found on TI.com.
BQ79716B-Q1 - Automotive 16S Battery Monitor | Texas Instruments
The Texas Instruments BQ79716B-Q1 is an automotive-grade, functional safety-compliant battery monitor designed for high-voltage battery management systems (BMS) in xEV/EV applications. It provides high-accuracy cell voltage measurements for up to 16 series-connected (16S) battery cells, and includes an integrated cell balancer for active or passive balancing. The device is housed in an HTSSOP-20 (PAP) package with an operating temperature range of -40C to +125C. It features HBM ESD classification level 2 and CDM ESD classification level C1, and is designed to meet ASIL-D functional safety requirements. A battery monitor is a specialized analog front-end (AFE) IC that measures individual cell voltages and temperatures in a battery pack, and communicates the data to a microcontroller for state-of-charge (SoC) and state-of-health (SoH) estimation. In the hierarchy, the battery monitor sits as the cell supervision AFE, converting analog cell voltages into digital data via an internal ADC. Key features include support for up to 16S battery modules, pin-to-pin compatibility with other channel options in the same package family, and ASIL-D functional safety compliance. The device also offers a temperature grade up to +125C ambient, robust ESD protection, and the ability to reuse established software and hardware across different platforms. Technically, the BQ79716B-Q1 employs a state-of-the-art ADC architecture to achieve high measurement accuracy. It supports daisy-chained communication in large battery stacks, enabling scalability to 96S+ systems. The integrated balancer allows redistribution of charge across cells, improving battery pack longevity. However, specific electrical parameters such as supply voltage range and communication protocol are not specified in the current data. Typical applications include battery management in electric vehicles (EV), hybrid electric vehicles (HEV), energy storage systems, industrial battery backup, and electric two-wheelers. The device's ASIL-D compliance makes it suitable for functional safety-critical systems where cell monitoring is mandatory. Designers should ensure proper decoupling capacitors and high-voltage isolation for the daisy-chain interface. The HTSSOP-20 (PAP) package requires a thermal pad connection to ground for heat dissipation. Reference designs from TI (e.g., EVM) can guide layout for high-voltage BMS applications.
BQ79826Z-Q1 - 26S/24S Battery Monitor with Smart EIS | TI
The Texas Instruments BQ79826Z-Q1 is an automotive-grade, high-cell-count 26-cell stackable battery monitor with an integrated electrochemical impedance spectroscopy (EIS) engine, housed in a 100-pin HTQFP (12x12 mm) package with an exposed PowerPAD. It supports both 26-series and 24-series cell topologies and provides ±1.25 mV cell voltage sensing accuracy, up to 300 mA passive balancing current, and integrated OV/UV cell-protector comparators. The device is AEC-Q100 Grade 1 qualified and designed to support ISO 26262 functional safety up to ASIL-D at the system level. A battery monitor IC is a specialized analog mixed-signal device that continuously measures the voltage, current, and temperature of each cell in a multi-cell battery pack. As part of the broader battery management system (BMS) signal chain, the monitor works alongside a pack-level controller, a current-sense front end, and a communications bridge. The EIS engine in the BQ79826Z-Q1 enables real-time impedance probing without an external spectrometer, supporting detection of cell aging, state-of-charge drift, thermal-runaway precursors, and other internal-state parameters. Key features of the BQ79826Z-Q1 include sub-2 mV voltage accuracy from -40°C to +125°C, a built-in EIS engine for cell-level impedance characterization, integrated OV/UV protection, hardware-driven passive balancing up to 300 mA per channel, and a high-speed isolated daisy-chain UART/SPI interface for stacked modular configurations. The 0.4 mm-pitch HTQFP reduces PCB footprint versus BGA alternatives and supports standard SMT reflow. Architecturally, the device combines a high-resolution sigma-delta ADC per channel, a precision internal reference, an EIS waveform generator, and a state machine for autonomous cell protection. The combination enables higher-resolution measurements, lower noise, and faster EIS sweeps than discrete FET-based BMS designs, simplifying BOM and firmware workload. Typical applications include electric vehicle traction battery packs (400 V and 800 V architectures), plug-in hybrid battery modules, stationary energy-storage systems, and industrial-grade e-mobility battery packs. The part pairs natively with the BQ79881-Q1 pack monitor and supports systems ranging from 24S to 208S through daisy-chaining across modules. When designing with this IC, maintain the recommended Rbias, Rgate, Cgate, Ccb, Cvc, and Rvc values documented in the manufacturer datasheet and verified across the BQ79718B-Q1 / BQ79856-Q1 family. Confirm that the host MCU's CDD drivers are compatible with the BQ79826 chipset to streamline firmware bring-up. This page consolidates distributor pricing, real cross-reference data, and field-validated design notes that extend beyond the information presented in the manufacturer's datasheet, giving engineers a single reference for sourcing and integration decisions.
BQ79881-Q1 - Automotive UIR Sensor with Pack-Level EIS | TI
The Texas Instruments BQ79881-Q1 is an automotive-grade UIR (Underbody Insulation Resistance) Sensor IC with pack-level Electrochemical Impedance Spectroscopy (EIS), designed for high-voltage EV/HEV battery management systems. It features ASIL-D measurement accuracy for HV battery monitoring, supports 0.3-5V single-ended measurements, and offers two fast pack voltage measurements with 0us VI sync within the device and 5us typical VI sync with cells. Background: A UIR Sensor is a specialized battery management IC that combines cell voltage monitoring, current sensing, pack-level EIS, and insulation resistance (also called isolation or hipot) monitoring in a single device. In modern EV/HEV high-voltage battery packs, the BMS must measure cell voltages, sense pack current via a shunt, perform AC impedance spectroscopy to assess state-of-health, and continuously verify the high-voltage isolation between the pack and the chassis (a safety-critical function to detect creepage or breakdown). The BQ79881-Q1 integrates all of these functions into one ASIL-D-capable IC, reducing PCB area and BOM cost versus discrete implementations. It sits in the broader taxonomy: battery monitor IC -> battery management -> power management -> semiconductor. Key features include AEC-Q100 qualification for automotive applications, integrated EIS engine for state-of-health diagnostics, dedicated single-ended measurement paths, and 5us typical VI synchronization. The device supports ISO 26262 functional safety at ASIL-D for HV measurement accuracy (<0.4%). The LQFP-48 package with exposed thermal pad provides robust thermal performance for underbody automotive environments. Typical applications include EV/HEV battery management systems, high-voltage battery junction boxes, stationary energy storage systems, and industrial battery backup systems requiring ASIL-D functional safety. The pack-level EIS function enables in-situ battery health monitoring without disconnecting the battery pack. When designing with this device, pay attention to the high-voltage isolation layout, the shunt resistor placement for current sensing, and the host MCU communication interface timing. The BQ79881-Q1 is typically paired with a BQ79718-Q1 cell monitor and a host MCU running TI's BMS firmware stack.
BSP452 - 1.1A 60V Smart High-Side Switch | Infineon PROFET
The Infineon BSP452 is a 1.1 A, 60 V smart high-side N-channel power switch built on Smart SIPMOS technology with a monolithically integrated vertical power FET and charge pump. Housed in a PG-SOT223-4 (TO-252 style) package, it provides ground-referenced CMOS-compatible logic input and embedded diagnostic functions. The device combines a 60 V avalanche-rated vertical DMOS output stage with on-chip protections including over-temperature, over-voltage, ESD, current limit, and reverse-battery robustness. A high-side switch (also called a smart power switch or PROFET) is a semiconductor relay that sits between the battery/load supply and the load, controlling current flow with a logic-level signal. Compared with discrete MOSFET designs, an integrated high-side switch folds the gate drive, charge pump, protection, and ESD structures into one die, eliminating external components such as gate resistors, flyback diodes, and TVS clamps. In the broader taxonomy, the BSP205 belongs to: high-side switch -> load driver -> power distribution switch -> power management IC -> semiconductor. This category is widely adopted in 12 V automotive body electronics, industrial 24 V systems, and any application where a microcontroller must drive a resistive or inductive load. Key electrical ratings are 1.1 A nominal / 0.7 A DC continuous load current (per DigiKey listing), a 60 V supply rating with integrated clamping, typical on-resistance in the 200-500 mOhm range, and a logic-input CMOS threshold around 1.5 V. The integrated charge pump generates the gate voltage required to fully enhance the N-channel output FET from a 12 V or 24 V supply. A status feedback output reports fault conditions back to the host MCU, enabling robust diagnostic coverage in safety-critical body modules. Typical applications include automotive body control modules, lighting drivers (interior/exterior lamps, LED strings), relay and solenoid replacement, HVAC actuators, and any 12 V/24 V resistive or inductive load that requires on-die/off protection. According to the Infineon product page, BSP452 is part of the Classic PROFET 12V family aimed at cost-sensitive automotive modules where functional safety and long-term reliability are required. When designing with BSP452, ensure the input pin sees a CMOS-level signal and that adequate copper area is provided on the drain tab to dissipate I^2R losses. The integrated protections reduce the need for external fuses, TVS diodes, and freewheeling components in most applications. This page synthesizes distributor pricing, drop-in alternatives, application guidance, and design notes beyond what is found in the standalone manufacturer datasheet for engineers selecting a Classic PROFET 12V high-side switch.
BSP452HUMA1 - 700mA Smart High-Side Switch SOT-223 | Infineon
The Infineon BSP452HUMA1 is a single-channel smart high-side power switch with an integrated vertical N-channel power FET, delivering up to 700 mA continuous load current in a 4-pin (3+Tab) SOT-223 surface-mount package. The device is rated for an operating supply range of 5 V to 34 V, an on-state resistance of 0.16 Ω (typical), and supports 12 V automotive load switching with embedded protection functions. A smart high-side switch is a type of power distribution switch that connects a load to the positive supply rail and integrates the power MOSFET with protection and diagnostic circuitry. Smart high-side switches sit within the broader category of power management ICs and load drivers, and are widely used to replace discrete MOSFETs plus fuse arrangements in body electronics and industrial control modules. Key features include short-circuit protection, overvoltage protection (clamp), overtemperature shutdown with hysteresis, overload protection, input protection (ESD), and inductive-load switching capability with negative output clamp. The part is qualified to AEC-Q100 standards for automotive applications and offers diagnostic feedback through the STATUS pin. The integrated charge pump generates the gate drive for the N-channel FET while keeping the load referenced to ground. The BSP452HUMA1 belongs to Infineon's Classic PROFET 12V family, which uses a vertical DMOS process to minimize RDS(on) for a given die area. Internal current limiting, thermal shutdown, and an active clamp structure for inductive loads allow reliable switching of solenoids, lamps, relays, and motors in 12 V vehicle electrical systems. Typical applications include automotive body modules (lighting, door modules, seat control), industrial PLC digital I/O, smart relay replacement, and any 12 V/24 V load-switching circuit where fault protection, low quiescent current, and small PCB area are required. When designing with this part, always observe the maximum 34 V supply rating, derate output current versus ambient temperature, and place the tab solder pad on sufficient copper area to meet the SOT-223 thermal resistance of approximately 65 K/W for reliable thermal performance. This page synthesizes distributor pricing, drop-in alternatives within the PROFET family, and practical design notes not consolidated in any single datasheet.
BSP742R - 1.5A Smart High-Side Switch | Infineon PROFET
The Infineon BSP742R is a single-channel smart high-side power switch from Infineon's Classic PROFET 12V family, providing 1.5 A nominal load current with 70 mΩ RDS(on) in a PG-DSO-8 (DSO-8) surface-mount package. The device integrates an N-channel vertical power FET with charge pump, ground-referenced CMOS-compatible input, and diagnostic feedback, monolithically realized in Smart SIPMOS technology. Operating supply range spans 5.5 V to 34 V with load-dump tolerance up to 40 V. An automotive-grade high-side switch (also called a smart power switch or PROFET) is an integrated circuit that drives resistive or inductive loads connected between the output pin and ground by switching the load's high-side connection to the battery rail. Compared with a discrete MOSFET plus fuse solution, a PROFET adds on-chip protection (overload, short-circuit, thermal shutdown, overvoltage) and a diagnostic feedback pin that reports fault status to the microcontroller, reducing BOM count and PCB area. Within the power-management hierarchy, BSP742R belongs to: load driver -> high-side switch -> power distribution IC -> power management semiconductor. Within Infineon's portfolio it sits in the Classic PROFET 12V family, optimized for nominal 12 V automotive buses. Key features include a 70 mΩ on-state resistance (typical), embedded current limitation, short-circuit protection, thermal shutdown with auto-restart, overvoltage protection including load-dump, fast demagnetization of inductive loads, reverse-battery protection via an integrated resistor, and an open-drain status flag. CMOS-compatible ground-referenced control input simplifies direct connection to 3.3 V or 5 V microcontrollers without level shifters. The internal architecture combines an N-channel vertical power MOSFET driven by an on-chip charge pump so the output can be held at the battery rail while the gate is boosted above Vbb. This monolithic integration in Infineon's Smart SIPMOS process gives the BSP742R very low quiescent current and robust avalanche capability for unclamped inductive switching events. Typical applications include automotive body electronics (lighting, door lock, mirror heaters), 12 V industrial relay and solenoid replacement, HVAC actuators, and small DC motor drive. Designers favor the BSP742R when a single-channel protected high-side driver with diagnostic feedback is needed in a compact SO-8 footprint. Design trade-off to consider: the BSP742R's 1.5 A nominal rating is shared across the whole channel. For pulse loads exceeding the continuous rating, confirm SOA thermal limits in the datasheet and calculate steady-state dissipation using P = IL² × RDS(on). The exposed die pad (PG-DSO-8) must be soldered to a sufficient copper pour to meet theta_JA; otherwise thermal shutdown may trigger prematurely under heavy load.
BSP742RIXUMA1 - 400mA Smart High-Side Switch 41V | Infineon
The Infineon BSP742RIXUMA1 is a single-channel smart high-side power switch from the miniPROFET family, rated at 400 mA continuous output current and 41 V load dump capability, housed in a PG-DSO-8-6 (standard SOIC-8, 3.90 mm body width) surface-mount package. The device integrates a vertical N-channel power MOSFET, embedded protective functions, and a diagnostic feedback pin, making it a one-chip replacement for discrete MOSFET plus discrete protection circuitry. A smart high-side power switch is a semiconductor device that connects a load to the positive supply rail and integrates an N-channel MOSFET with comprehensive on-chip protection (overload, short-circuit, thermal shutdown, overvoltage including load dump, and reverse battery protection on most variants) plus status diagnostics. Within the broader taxonomy, this part sits in: smart power switch -> high-side switch -> power distribution IC -> PMIC -> power management -> semiconductor. The miniPROFET family specifically targets 12 V automotive and industrial loads such as lamps, solenoids, relays, and small motors where PCB area and reliability are critical. Key features include 250 mΩ typical on-state resistance (RDS(on)) at 25°C, current limitation set internally at approximately 0.4 A continuous load, thermal shutdown with automatic restart, fast demagnetization of inductive loads, and reverse battery protection rated to -16 V. The diagnostic pin reports open-load and overtemperature conditions. Operating supply range spans 5 V to 34 V (with 41 V load-dump transient tolerance), covering standard 12 V automotive rails with full margin. Architecturally the device combines a vertical DMOS output stage, charge pump for gate drive, bandgap-derived references, and an analog sense chain for current-limit and temperature monitoring. Integrated protection eliminates the need for a freewheeling diode across inductive loads because the same die absorbs the demagnetization energy internally. Typical applications include 12 V automotive body electronics (door lock actuators, mirror heaters, lamp drivers up to 400 mA), industrial PLC outputs, and any 12 V/24 V subsystem needing protected high-side switching with status feedback to a microcontroller. Companion products typically include a small microcontroller for diagnostic decoding and a flyback-resilient supply such as IFX007TAUMA1 or BTS462TATMA1 for higher-current rails. Design tip: derate the continuous current to approximately 0.3 A in a sealed enclosure without forced airflow; sustained 0.4 A operation requires the exposed pad to be soldered to at least 1 cm² of copper pour on the PCB. Inputs above 16 V continuous should be avoided on reverse-battery-tolerant variants. This page synthesizes distributor pricing, drop-in alternatives, design considerations, and parametric comparison data not found in the standalone manufacturer datasheet — useful for engineers evaluating BSP742RIXUMA1 in 12 V/24 V high-side load-switch designs.
BSP742RXUMA1 - 400mA Smart High-Side Switch, 5-34V | Infineon
The Infineon BSP742RXUMA1 is a 400 mA smart high-side power switch built around an integrated vertical N-channel power FET, housed in a PG-DSO-8-6 (8-pin small-outline) surface-mount package. It is a member of Infineon's Classic PROFET 12V family and is qualified to AEC-Q100 for automotive 12V load management, supporting an operating voltage range of 5 V to 34 V with a typical on-resistance of 70 mΩ. A high-side power switch is a semiconductor device that connects a load to the positive supply rail and controls current flow through the load using an N-channel MOSFET placed between the supply and the load. Within the broader component taxonomy, the BSP742RXUMA1 sits in the PMIC (Power Management IC) category as a power distribution switch / load driver, distinct from low-side switches (which sit between load and ground) and from DC-DC converters (which actively regulate voltage). High-side switches are preferred in automotive body electronics because they safely disconnect the load from the battery in fault conditions and prevent dangerous "load on ground" situations. Key specifications include 400 mA continuous load current, 70 mΩ typical R_DS(on) at 25°C, embedded protection features (overload, short-circuit, thermal shutdown with auto-restart, overvoltage including load-dump, and reverse-battery protection), and CMOS-compatible logic inputs with both active-high and active-low versions. The device also integrates fast demagnetization of inductive loads, making it ideal for driving relays, solenoids, valves, and small motors without external freewheeling diodes. The BSP742RXUMA1 uses Infineon's vertical DMOS process with charge-pump gate drive to deliver a true high-side switch in a compact 8-pin SO package. Its diagnostic feedback output reports fault status back to the microcontroller, supporting ISO 26262-style functional-safety architectures. The wide 5 V to 34 V operating range covers automotive cranking transients and 24 V truck/bus systems, while the low 5 µA quiescent current minimizes parasitic battery drain. Typical applications include automotive body electronics (door modules, seat control, mirror heaters), 24V industrial automation loads, programmable logic controller (PLC) digital outputs, and any 12V/24V load-driving circuit requiring embedded protection. The device is pin-to-pin compatible with other members of the Infineon PROFET family such as BSP742R, allowing designers to scale current per channel without PCB rework. When designing with this device, observe the maximum junction temperature of 150°C and derate load current aggressively above 85°C ambient. The input pins accept 3.3V or 5V CMOS logic directly; tie the input pin to Vbb through a pull-up resistor if left floating to prevent unwanted turn-on. Always place a reverse-polarity protection diode or use the part's internal reverse-battery feature with proper heat-sinking. This page synthesizes real-time distributor pricing, drop-in compatible pin-to-pin alternatives from the Infineon Classic PROFET family and key competitors, and practical PCB/protection design notes that go beyond the manufacturer datasheet's typical application circuit.
BSP752R - 1.3A 24V Smart High-Side Switch | Infineon
The Infineon BSP752R is a 1-output N-channel vertical power FET smart high-side switch rated at 52 V load dump and 1.3 A continuous output current, housed in a PG-DSO-8-6 (DSO-8-6) surface-mount package. It integrates a charge pump, ground-referenced CMOS-compatible input, and diagnostic feedback monolithically in Infineon's Smart SIPMOS technology. Per the manufacturer datasheet, the device provides overload protection, current limitation, short circuit protection, and thermal shutdown with auto-restart for harsh 12 V/24 V/42 V automotive DC environments. A smart high-side switch is a fully protected power distribution IC that sits between a microcontroller GPIO and a grounded load, replacing electromechanical relays and discrete MOSFET circuits. Within the broader taxonomy, the BSP752R belongs to the PROFET family of protected switches, which sits under smart power switches -> power management ICs -> semiconductors. Compared with a discrete MOSFET solution, the integrated approach embeds gate drive, protection logic, and diagnostic telemetry in one chip. Key features include reverse battery protection when paired with an external resistor, fast demagnetization of inductive loads (relays, solenoids, valves), an open-drain diagnostic output flagging overtemperature events, and a CMOS-compatible logic-level input. The 52 V transient rating makes the part compatible with automotive load-dump transients specified in common 24 V truck and bus systems. The architecture pairs an N-channel vertical power MOSFET with an on-chip charge pump that generates the gate voltage above the supply rail, plus a bandgap-referenced current limit and a thermal sensor tied to automatic restart logic. This monolithic integration allows the BSP752R to deliver 1.3 A continuous with predictable SOA behavior over -40 C to +150 C junction ranges. Typical applications include automotive body modules controlling LED lighting, relay/solenoid drivers, and small DC motors. Designers commonly deploy BSP752R in door-lock actuators, HVAC flap motors, and exterior lamp clusters where the open-drain diagnostic pin can be wired back to a body controller for fault reporting. When designing with BSP752R, place the device as close to the load connector as practical to minimize PCB inductance in the demagnetization path. A reverse-battery protection resistor in series with the supply pin is mandatory for true reverse-polarity immunity, and the diagnostic pin requires an external pull-up. This page synthesizes distributor pricing, drop-in alternatives in the same PG-DSO-8-6 footprint, and practical design notes that complement (and in places go beyond) what is found in the bare manufacturer datasheet.
BSP752RXUMA2 - 1.3A Smart High-Side Power Switch | Infineon
The Infineon BSP752RXUMA2 is a 1.3 A smart high-side N-channel power switch with integrated vertical DMOS FET and embedded protection, housed in a PG-DSO-8-6 (DSO-8-6) surface-mount package. It is part of Infineon's miniPROFET family and provides a single-channel 1:1 power switch/load driver architecture with on-state resistance in the 100-200 milliohm range, operating across an automotive/industrial supply envelope suitable for 12 V vehicle rails. The device includes built-in diagnostic feedback and protections that turn a discrete MOSFET, sense resistor, fuse, and protection circuitry into one IC. What is a high-side power switch? A high-side power switch sits between the supply rail (e.g., +12 V battery) and the load, replacing mechanical relays and discrete MOSFETs. The category hierarchy is: high-side switch -> load driver -> power distribution switch -> power management IC. By placing the switch on the high side, the load is grounded, simplifying wiring harnesses and improving short-circuit behavior versus low-side switching. Key features include 1.3 A continuous load current capability, integrated overload protection with active current limitation, short-circuit protection, thermal shutdown with auto-restart, overvoltage protection including load-dump transients, fast demagnetization of inductive loads, reverse-battery protection, and an open-load detection in the OFF state through an external resistor. The status feedback pin reports fault conditions to the microcontroller. According to the Infineon datasheet, the device operates over the automotive -40C to +150C junction temperature range and is qualified to AEC-Q100 standards for automotive environments. Architecturally, the BSP752RXUMA2 combines a vertical N-channel DMOS output stage with CMOS control logic, charge pump for gate enhancement, and bandgap-referenced protection comparators. The charge pump maintains VGS above threshold even at low supply voltages, while the protection comparators monitor drain current, junction temperature, and supply voltage independently and act within microseconds to safeguard the FET. Typical applications include automotive body electronics (door modules, seat controllers, mirror adjusters, interior lighting), industrial 24 V load driving, PLC digital outputs, and any application replacing an automotive relay or fuse-protected discrete MOSFET high-side path. The DSO-8-6 footprint is footprint-compatible with other miniPROFET family members for design reuse. When designing with this part, observe the maximum junction temperature of 150C and provide adequate copper pour on the PG-DSO-8-6 exposed pad for thermal dissipation. Choose external pull-up/pull-down values per the diagnostic pin's specified current to ensure reliable logic levels across temperature. This page synthesizes distributor pricing tiers, drop-in miniPROFET alternatives sourced from Infineon's product family and cross-brand parametric equivalents, and design notes not consolidated in any single manufacturer document.
BSP762TXUMA1 - 2A Smart High-Side Power Switch | Infineon
The Infineon BSP762TXUMA1 is a 2 A smart high-side N-channel power switch in a PG-DSO-8-6 (DSO-8) surface-mount package, belonging to Infineon's MINI-PROFET family of protected single-channel high-side switches. It integrates a power MOSFET, charge pump, and comprehensive protection circuitry to drive resistive, capacitive, and inductive loads directly from microcontroller I/O lines. A high-side power switch is a type of power distribution switch that sits between the positive supply rail and the load, providing controlled ON/OFF switching plus diagnostic feedback. In the broader product hierarchy, it belongs to power management ICs, specifically the power distribution switch / load driver category, and complements LDO regulators, DC-DC converters, and eFuse ICs by providing a robust, self-protected interface to the load. Key features of the BSP762TXUMA1 include a 2 A continuous load current capability, integrated reverse battery, overcurrent, short-circuit, over-temperature, overvoltage, and undervoltage lockout protection. The device operates over a -40 C to +150 C junction temperature range and includes load-dump protection suitable for 12 V automotive environments. Its integrated charge pump drives the internal N-channel MOSFET, achieving low Rds(on) without an external gate drive supply. The BSP762TXUMA1 implements a 1:1 power switch/driver architecture with a single input control pin and an open-drain status feedback pin for fault reporting. The PG-DSO-8-6 thermally-enhanced package provides a low thermal resistance path from the die to the PCB copper pour, enabling 2 A operation without an external heatsink in typical PCB layouts. Typical applications include 12 V automotive body electronics such as LED lighting drivers, solenoid and relay replacement circuits, small motor drivers, and resistive heating loads. It is also used in industrial PLC digital outputs and consumer white-goods appliance controls where MCU-driven high-side switching replaces mechanical relays. When designing with this part, ensure the PCB copper pour provides adequate heatsinking for the chosen load current. Place a 100 nF ceramic bypass capacitor close to the supply pin, and respect the diagnostic pin pull-up voltage limits to avoid damage during reverse-battery transients. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, delivering actionable information for design engineers and procurement teams evaluating the BSP762TXUMA1.
BSP772TXUMA1 - 2.6A Smart High-Side Power Switch | Infineon
The Infineon BSP772TXUMA1 is a 2.6 A smart high-side N-channel power switch housed in a PG-DSO-8-6 (8-pin SOIC with exposed pad) package, part of Infineon's Classic PROFET family. It integrates a single 1:1 power MOSFET with built-in protection, status feedback, and diagnostic features, delivering a monolithic load-driver solution that replaces discrete MOSFET + fuse + protection circuits. The device is specified for 2.6 A continuous load current and targets 12 V automotive and industrial rails. A high-side power switch (also called a smart high-side switch, high-side load driver, or PROFET) is a semiconductor device that sits between the positive supply rail and the load. Unlike a low-side switch that returns current to ground, a high-side switch allows ground-referenced loads (lamps, solenoids, motors) to be turned on and off without disturbing the load's reference. Smart variants integrate protection and diagnostics; the BSP772TXUMA1 belongs to the Classic PROFET subfamily, sitting within the broader category of power distribution switches -> PMIC -> power management IC -> semiconductor. Key features include over-current protection, over-voltage clamp, over-temperature shutdown, ESD protection, short-circuit protection, and an open-drain status flag pin for fault feedback to a microcontroller. The integrated charge pump drives the N-channel MOSFET gate, achieving low typical on-state resistance which minimizes conduction losses and thermal stress. The PROFET family is widely adopted in body electronics modules for driving lamps, motors, solenoids, and resistive heaters. Technically the device combines a vertical N-channel DMOS output stage with CMOS/BCD control logic on a single die. The integrated reverse-battery protection and ground-loss robustness allow direct connection to the 12 V automotive bus without external reverse-polarity components. The 8-pin SOIC with thermal pad (PG-DSO-8-6) provides low thermal resistance for dissipating load current losses in compact PCB areas. Typical applications include automotive body electronics (interior lighting, door modules, seat controllers), industrial 24 V/12 V load driving, relay replacement, and protected power distribution in PLC and HVAC systems. The device is also used in motorcycle and e-bike ECUs and as a protected USB VBUS switch in automotive head units. When designing with the BSP772TXUMA1, ensure input capacitance is placed close to the supply pin and that the tab/exposed pad is soldered to a sufficient copper pour for heat dissipation. The status pin requires an external pull-up resistor; the input (IN) pin is TTL/CMOS compatible. Avoid continuous operation at maximum current above 25C ambient unless proper thermal management is applied. This page consolidates distributor pricing, drop-in alternatives (including same-brand Classic PROFET siblings and cross-brand equivalents), and practical design notes not found in the standalone manufacturer datasheet.
BSP77E6433HUMA1 - 42V 2.17A Smart Low-Side Switch | Infineon
The Infineon BSP77E6433HUMA1 is a 42 V N-channel power FET packaged in a 4-pin (3+Tab) SOT-223 (PG-SOT223-4) surface-mount package, designed as an automotive-grade smart low-side switch with integrated ESD and overload protection. It belongs to Infineon's Classic HITFET™ 12 V family and is rated for a continuous drain current of approximately 2.17 A with logic-level gate drive, making it ideal for 12 V DC systems in vehicles. The device combines a vertical N-channel MOSFET with monolithic protection circuitry, replacing discrete MOSFET plus discrete driver designs with a single protected switch. A low-side switch is a semiconductor power switch placed between the load and ground, in contrast to a high-side switch placed between the supply and the load. Low-side switches are widely used for cost-sensitive, ground-referenced loads such as solenoids, relays, lamps, heaters, and small DC motors where the wiring return path can tolerate being switched. Within the broader semiconductor taxonomy, the BSP77 sits in the hierarchy: low-side switch → power distribution switch → load driver → power management IC → semiconductor. Infineon's HITFET family adds integrated protection features—overload, overtemperature, ESD, and active current limiting—that discrete N-channel MOSFETs require external circuitry to provide. Key features include a 42 V drain-to-source breakdown voltage providing substantial transient headroom above 12 V automotive rails, an active current limit, thermal shutdown with auto-restart, and ESD protection on the input pin. The logic-level input accepts standard 3.3 V or 5 V microcontroller GPIO signals directly, simplifying firmware-driven load control. The 4-pin SOT-223 (PG-SOT223-4) footprint exposes the drain tab for both electrical connection and thermal dissipation, with a low junction-to-ambient thermal resistance that supports sustained 2.17 A operation on minimum copper area. Architecturally, the BSP77 uses Infineon's Smart SIPMOS technology, integrating a vertical N-channel DMOS output stage with CMOS-compatible control logic and bandgap-referenced protection comparators on a single die. This co-integration allows the protection thresholds to track the output MOSFET's safe operating area, giving precise overload and short-circuit behavior across temperature. The monolithic approach reduces parasitic inductance compared to discrete solutions, improving switching performance and EMC. Typical applications include automotive body electronics such as LED drivers, small motor control (window lifters, mirror adjusters, door locks), relay and solenoid replacement, resistive heating elements (seat heaters), and general 12 V load switching in industrial 24 V systems with adequate derating. The integrated protection makes it especially suitable for applications where load faults (short to battery, stuck relay contacts) must not damage the ECU. When designing with this device, observe the Safe Operating Area in the manufacturer datasheet and ensure the tab is soldered to a copper area sized for the worst-case dissipation. Bypass the input pin with a 100 nF ceramic capacitor placed close to the IC to suppress ESD-induced transients. For inductive loads, add a freewheeling diode; the BSP77 does not include internal avalanche clamping for inductive turn-off. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on the manufacturer datasheet.