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TPD3S714AQRVCRQ1 - Automotive USB 2.0 Protection IC | TI
The Texas Instruments TPD3S714AQRVCRQ1 is an automotive-grade single-chip USB 2.0 interface protection IC integrating short-to-battery protection, short-circuit protection, and ESD protection for the USB connector VBUS line (5.25 V, up to 500 mA) and the USB data lines, housed in a 16-pin WQFN (RVC) package and qualified to AEC-Q100 for automotive deployment. An interface protection IC is a power-management and surge-suppression device that sits between a host controller and an external connector, guarding both the power rail and the high-speed data pins against fault conditions. Within the system hierarchy it belongs to the broader families of surge suppression ICs, circuit protection devices, and power management ICs. In automotive USB systems, connector pins are exposed to shorts to the 12-V battery rail, shorts to ground, load-dump transients, and electrostatic discharge, all of which can destroy unprotected transceivers. The TPD3S714-Q1 family integrates a current-limited VBUS power switch with short-to-battery and short-to-ground fault response, together with integrated data-line switches that provide best-in-class bandwidth for minimal signal degradation during USB short-to-battery events. The high-bandwidth data switches isolate the USB 2.0 D+/D- lines at fault detection, protecting the downstream transceiver while preserving signal integrity during normal full-speed and high-speed operation. According to the TI datasheet, the device is a single-chip solution for automotive USB hubs, head units, rear-seat entertainment, telematics, and media interface applications. Single-chip integration of the VBUS FET, data switches, and fault-control logic reduces BOM count versus discrete TVS, FET, and controller solutions, and the integrated solution reduces the protection response time relative to external discrete implementations. Typical applications include automotive USB charging ports and hubs, infotainment head units, rear-seat charging modules, and telematics control units where USB connectors face harsh fault environments. Design consideration: confirm the VBUS current-limit setting and fault flag behavior against the host controller power-sequencing requirements, and provide solid ground pours under the WQFN exposed pad for thermal and ESD performance. This page adds distributor pricing, drop-in family alternatives, design notes, and comparison data beyond the manufacturer datasheet.
TPS16630PWPR - 60V 6A eFuse with Adjustable PLIM | TI HTSSOP-20
The Texas Instruments TPS16630PWPR is a 60 V, 6 A integrated-FET electronic fuse (eFuse) with adjustable output power limiting (PLIM), housed in a 20-pin HTSSOP (PWP) PowerPAD package. Per the TI TPS1663x datasheet, it integrates a 31 mΩ pass FET, supports an operating input range of 4.5 V to 60 V, and offers an adjustable current-limit threshold from 0.6 A to 6 A with ±7% accuracy at room temperature. An eFuse (electronic fuse) is a solid-state circuit-protection device that replaces a traditional fusible link or PTC. Compared with a one-shot fuse, an eFuse can auto-retry or latch off, log faults, and offer precise, programmable thresholds. eFuses sit within the broader category of hot-swap controllers and power-path protection ICs, which in turn belong to the power-management IC family. PLIM adds a programmable output-power clamp on top of the current limit, allowing designers to cap inrush energy in capacitive loads and protect upstream sources from sustained over-power events. Key features of the TPS16630PWPR include: integrated 31 mΩ Rds(on) FET; 0.6 A to 6 A adjustable ILIM (±7%); 4.5 V to 60 V operating VIN; fast short-circuit response with circuit-breaker mode; output slew-rate control via dV/dT pin; adjustable UVLO and overvoltage lockout (OVLO); MODE pin for latch-off or auto-retry selection; fault flag (FLG) output; thermal shutdown; and a -40°C to +125°C junction-temperature operating range. The HTSSOP-20 PowerPAD package exposes a thermal pad that drops θJA to roughly 28 °C/W when properly soldered, supporting 6 A continuous current at modest VIN-VOUT deltas. Architecturally, the device uses an N-channel MOSFET controlled by an internal charge pump, an analog control loop for current and power limiting, and a fault-management state machine. The PLIM block multiplies sensed input voltage by load current and compares it against an external resistor-set reference, producing a power ceiling independent of load impedance. This approach allows tighter protection in applications where current alone is not enough to characterize stress on the source. Typical applications include 24-V industrial PLC I/O rails, factory-automation sensors, USB-PD source protection in 12-V/24-V adapters, server-board auxiliary rails, and automotive body-electronics loads operating on 12-V/24-V battery systems. Designers reach for the TPS16630PWPR when discrete hot-swap controllers plus external FETs become too large or too expensive for the BOM. When designing with this part, choose the ILIM resistor using RILIM = 12 kΩ × 6 A / ILIM and verify inrush energy stays within the SOA of the input source. The PowerPAD must be soldered to a copper area of at least 1 in² for the thermal performance quoted in the datasheet, and decoupling capacitors should be placed within 2 mm of IN and OUT pins to keep high-di/dt transients out of the control loop. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, structured for engineers evaluating the TPS16630PWPR against discrete hot-swap, fuse, and TVS solutions.
TPS16851VMAR - 80V 20A eFuse Hot Swap Controller VMA | TI
The Texas Instruments TPS16851VMAR is an 80V, 3.5mΩ, 20A stackable integrated hot swap eFuse with accurate and fast current monitor, housed in a 23-pin LQFN-CLIP (VMA, 6x5 mm) package. It operates from a wide 9V to 80V input range with a 92V absolute maximum rating, an integrated N-channel MOSFET with RON of 3.65mΩ typical (3.5mΩ marketing figure), and an active-high enable input with adjustable undervoltage lockout. The part withstands negative voltages up to -5V at the output and supports stackable operation for higher current rails. The device includes accurate current monitoring, programmable fault response, and a thermal pad for efficient heat extraction in high-current applications. What is an eFuse/Hot Swap Controller? An eFuse (electronic fuse) is a semiconductor protection device that replaces a traditional blade fuse with solid-state hot-swap control. A hot swap controller manages the safe insertion and removal of circuit boards or loads into a live power bus, controlling inrush current and providing protection against overloads, short circuits, and transients. The taxonomy is: eFuse -> hot swap controller -> power management IC -> semiconductor. Unlike a simple fuse, an eFuse can auto-retry or latch off, report faults via digital signals, and integrate current/temperature sensing. Key features include the 80V continuous input operating range, 92V transient tolerance, integrated low-RON FET, accurate current monitor output (IMON), adjustable current-limit, fast short-circuit response, thermal shutdown, and a fault output (FLT) pin. The active-high enable pin allows sequencing with upstream converters, and the PROG pin sets the current-limit threshold with a single external resistor. The integrated MOSFET eliminates the need for external sense resistors and external FETs, reducing PCB area in 20A rails. The architecture uses a charge-pump-driven N-channel MOSFET with a high-side monolithic switch, achieving low RON at high currents. The LQFN-CLIP package uses a top-side clip for low thermal impedance and high current capability, supporting 20A continuous operation with proper PCB thermal design. The stackable feature means TPS1685x devices can be paralleled for higher-current rails. Typical applications include 48V telecom/datacom power distribution, server backplane protection, industrial PLC I/O power rails, battery management systems, and eMobility/USB-PD high-current paths. The wide VIN range and integrated FET make it a strong choice for AI server 48V distribution and multi-amp industrial loads. Compared to a discrete hot-swap solution with external FETs and sense resistors, the TPS16851VMAR simplifies BOM and improves accuracy. A key design consideration is thermal management: at VIN=48V and 20A load with 3.65mΩ RON, the conduction loss is approximately 3.5W (Estimated: P = I2R = 20*20*0.00365 = 1.46W steady-state, higher during fault events). The LQFN-CLIP package provides low theta-JC, but PCB copper area and airflow still need consideration. Adding sufficient input capacitance and TVS protection is recommended for robust hot-plug behavior in 48V systems. This page synthesizes distributor pricing, drop-in TPS1685x family alternatives, and practical design notes not found in the manufacturer datasheet alone.
TPS1689x-Q1 - 20A Stackable eFuse with PMBus | Texas Instruments
The Texas Instruments TPS1689x-Q1 is an integrated high-current circuit protection and power management solution designed for automotive and industrial applications. It operates from an input voltage range of 9V to 80V, with an absolute maximum rating of 92V, and can withstand negative transient voltages down to -5V at the output. The device integrates a low on-resistance FET with a typical RON of 3.5mΩ, enabling high-efficiency power distribution. It supports up to 20A of continuous current and is stackable, allowing multiple devices to be paralleled for higher current requirements. The integrated PMBus interface provides real-time telemetry, control, and configuration, enabling host controllers to monitor and manage the power system dynamically. An eFuse is an electronic fuse that combines the functions of a traditional fuse with active protection features such as overcurrent, overvoltage, and inrush current limiting. Unlike a passive fuse, an eFuse can be reset and offers precise, programmable protection. The TPS1689x-Q1 is a hot-swap controller that manages the safe insertion and removal of circuit boards in live systems, preventing damage from inrush currents and short circuits. It is part of the broader power management IC hierarchy, specifically within the hot-swap and eFuse category, which is essential for high-reliability systems. Key features include multiple protection modes: overload, short circuit, and excessive inrush current. The device responds to output overcurrent conditions during steady-state by performing a circuit-breaker action after a user-programmable transient fault blanking interval. This allows the device to support higher peak currents for a short user-defined interval while ensuring robust protection against persistent faults. The PMBus interface supports monitoring of voltage, current, and temperature, as well as configuration of protection thresholds and fault response. The TPS1689x-Q1 is available in a small package, making it suitable for space-constrained designs. It is AEC-Q100 qualified for automotive applications, ensuring reliability under harsh conditions. The device is designed to work with very few external components, simplifying the design and reducing BOM cost. The stackable feature allows multiple devices to be connected in parallel, with the IMON pins tied together to provide total current telemetry. Typical applications include automotive body control modules, infotainment systems, advanced driver-assistance systems (ADAS), and industrial power distribution. The device is also suitable for server and telecom power systems where hot-swap capability and high reliability are critical. The PMBus interface enables remote monitoring and control, making it ideal for smart power management in data centers and industrial automation. When designing with the TPS1689x-Q1, it is important to consider the thermal performance of the package and the PCB layout. Adequate copper area and thermal vias are recommended to dissipate heat generated during high-current operation. The PMBus interface should be properly terminated and isolated if used in noisy environments. The device's programmable fault blanking interval should be set according to the system's inrush current requirements to avoid nuisance trips.
TPS1HB08BQPWPRQ1 - 40V 8mΩ Smart High-Side Switch | TI
The Texas Instruments TPS1HB08BQPWPRQ1 is a 40-V, 8-mΩ, single-channel smart high-side switch intended for 12-V automotive systems, delivered in a 16-pin HTSSOP (PWP) package with PowerPAD exposed thermal pad. It is qualified to AEC-Q100 grade 1 and integrates a low-Rdson N-channel MOSFET with on-resistance of 8 mΩ typical, supporting continuous load currents up to 70 A per the DigiKey listing, with an operating voltage range of 4 V to 18 V nominal and absolute maximum of 40 V. A high-side switch is a power-distribution topology that places the switching element between the supply rail and the load, allowing the load to be tied to chassis ground and providing inherent short-to-ground protection. Smart high-side switches extend this with on-die diagnostics and protection. In the system hierarchy, the TPS1HB08BQPWPRQ1 sits inside the power-management subsystem (load driver -> high-side switch -> power distribution IC -> automotive PMIC), enabling ECU designers to replace discrete MOSFETs, fuses, and sense resistors with a single AEC-Q100 qualified device. Key features include an adjustable current limit (6.4 A to 70 A depending on variant), integrated thermal shutdown, reverse-battery and load-dump protection, open-load detection in on and off states, short-to-ground and short-to-battery diagnostics, and a current-sense analog feedback output. The exposed thermal pad and 8 mΩ on-resistance minimize conduction loss and junction-temperature rise at heavy loads. The device operates across -40°C to +125°C ambient, satisfying under-hood automotive requirements. Architecturally, the TPS1HB08-Q1 combines a vertical N-channel power MOSFET with charge pump, gate driver, current-sense mirror, and an SPI-compatible or PWM-friendly control interface. The charge pump maintains gate enhancement at low VIN, while the analog CSN pin provides a ground-referenced current proportional to load current for closed-loop monitoring and fault detection. Typical applications include automotive body electronics such as headlight LED drivers, HVAC blower and fan control, seat and mirror actuators, infotainment power rails, and front-camera heater supplies. It is also used in zone-architect 12-V domain controllers where each high-current rail requires independent protection and diagnostics. When designing with this device, allocate sufficient PCB copper area to the PowerPAD to keep junction temperature below 150°C under worst-case VIN and ILOAD, and bypass VIN with at least 100 nF plus 10 µF ceramic placed within 5 mm of the pin. Use the CSN sense resistor value to set the analog current-limit threshold for your load. This page synthesizes distributor pricing, drop-in alternatives, and practical thermal/diagnostic notes that complement the manufacturer datasheet for AEC-Q100 design reviews.
TPS2001CDGKR - 2A USB Power Switch, 72mΩ, 5V VSSOP-8 | TI
The Texas Instruments TPS2001CDGKR is a single-channel, current-limited USB power-distribution switch housed in an 8-pin VSSOP (DGK) package. It delivers up to 2 A continuous load current from a 4.5 V to 5.5 V input rail, with a 72 mΩ (typical) N-channel MOSFET high-side switch that minimizes voltage drop and power dissipation in USB and other hot-plug applications. A power-distribution switch (also called a USB power switch or load switch) is a smart high-side MOSFET combined with protection circuitry. It sits between a system power rail and a downstream port, providing controlled turn-on, fault isolation, and current limiting. Within the broader taxonomy, a load switch sits beneath hot-swap controllers and above discrete MOSFETs in the power-management hierarchy, typically integrating an N-channel MOSFET, charge pump, current sense amplifier, and fault logic into one IC. Key features of the TPS2001CDGKR include a fixed 2 A current-limit threshold with ±20% accuracy, fast 2 µs short-circuit response, true reverse-current blocking when disabled, an output discharge resistor for safe USB VBUS decay, and an active-high enable input for power sequencing. The device asserts an active-low fault flag (OC) whenever the output exceeds the current-limit threshold or experiences a reverse-voltage condition, simplifying host monitoring in compliant USB ports. The device uses an internal charge pump to drive the gate of the N-channel MOSFET, achieving low Rds(on) without requiring an external bootstrap supply. Built-in thermal protection shuts down the switch when junction temperature rises excessively, and auto-restart resumes operation once the fault clears. The 8-VSSOP (DGK) footprint (3.0 mm body width) is compatible with industry-standard pinouts, allowing direct layout reuse across the TPS20xxC family. Typical applications include USB 2.0/3.0 downstream ports on motherboards and hubs, charging ports for tablets and smartphones, set-top boxes, and any 5 V rail requiring inrush and short-circuit protection. The combination of high current limit, low on-resistance, and true reverse blocking makes it a strong fit for hot-plug VBUS distribution where back-feeding from peripherals must be prevented. When designing with the TPS2001CDGKR, observe input-capacitor placement guidelines and ensure the trace between IN and GND pins is short and wide to handle inrush transients. Decoupling with a 1 µF ceramic between IN and GND is strongly recommended to keep the device stable during load steps. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
TPS2041BQDBVRQ1 - Automotive 0.5A USB Power Switch SOT-23-5 | TI
The Texas Instruments TPS2041BQDBVRQ1 is an automotive-qualified, single-channel, current-limited USB power-distribution switch housed in a 5-pin SOT-23 (DBV) package. It delivers a continuous load current of 500 mA from a 2.7 V to 5.5 V input rail, with an on-resistance of 105 mΩ (typical) and a factory-trimmed current limit of approximately 1 A. The TPS2041BQDBVRQ1 is the AEC-Q100 qualified variant of the TPS2041B, engineered for harsh automotive power-distribution environments. A USB power-distribution switch is a high-side load switch that sits between a 5 V bus and a downstream USB port or peripheral. It protects the host system from short circuits and over-current events by combining an N-channel MOSFET pass element with built-in current-limit, thermal shutdown, and undervoltage lockout. When the host asserts the active-low enable input, the switch closes to deliver current; when disabled, it presents a high-impedance path to block back-feeding. Key features include an accurate current limit at approximately 1 A, an integrated 105 mΩ N-channel MOSFET, thermal and short-circuit protection, an active-low logic enable input, and a flag output that asserts on fault. The SOT-23-5 footprint keeps board area minimal, making the part suitable for compact infotainment, telematics, and body-electronics modules where PCB real estate is constrained. The TPS2041BQDBVRQ1 uses an N-channel MOSFET pass element driven by an internal charge pump to achieve true low-RDS(on) high-side switching. This architecture minimizes I²R conduction loss on the 5 V rail and keeps thermal rise modest at the 500 mA continuous rating. The fixed current limit prevents the upstream automotive bus from sagging during load transients, while the thermal-shutdown circuit latches the switch off on excessive junction temperature. Typical applications include USB port power switching in automotive head units, body control modules, and rear-seat infotainment hubs. The device is also used to switch individual loads downstream of an LDO, providing fault isolation between branches. The wide input range (2.7 V to 5.5 V) tolerates cold-crank and load-dump conditions typical of 12 V automotive systems after regulation. When designing with this device, ensure the input supply is well-decoupled with at least 1 µF of ceramic capacitance placed close to IN. Avoid continuous operation above 500 mA and verify thermal performance against the SOT-23-5 θJA. This page synthesizes distributor pricing, drop-in alternatives, and design considerations not found in the manufacturer datasheet alone.
TPS2054 - Quad 0.5A USB Power Switch 80mOhm | Texas Instruments
The Texas Instruments TPS2054 is a quad-channel power-distribution switch integrating four N-channel MOSFET high-side switches in a single 16-pin SOIC package. Each channel supports 500 mA continuous current with a 0.9 A current limit, operating from a 2.7 V to 5.5 V input range with 80 mOhm maximum on-resistance (5 V input) and active-high enable inputs. A power-distribution switch is a type of load switch within the power management IC hierarchy that sits between a supply rail and its load, providing controlled turn-on, fault protection, and status reporting. USB power switches specifically guard downstream ports against overcurrent and short-circuit faults, preventing host rail collapse in systems that distribute 5 V power to multiple peripheral ports. Key features include 500 mA continuous current per channel for USB compliance, 135 mOhm typical high-side MOSFET resistance, short-circuit and thermal protection, and an overcurrent logic output (nFAULT) that signals fault conditions to the host controller. The device offers logic-level enable inputs, a 2.5 ms typical output rise time that limits inrush current during hot-plug events, and undervoltage lockout for predictable startup behavior. Internally, each switch uses a charge-pumped N-channel MOSFET gate drive with precision current-sense circuitry. When load current exceeds the 0.9 A limit, the device enters constant-current mode; sustained faults trigger thermal shutdown per channel. The open-drain overcurrent output allows direct connection to a microcontroller GPIO with a pull-up resistor. Typical applications include USB hub port power control, self-powered and bus-powered USB peripherals, multi-port charging accessories, hot-plug power switching in embedded systems, and industrial power-rail partitioning requiring per-channel fault isolation. Design tip: the controlled 2.5 ms rise time removes the need for external soft-start circuitry, but ensure PCB traces per channel are rated for 0.9 A fault current and place the input/output bypass capacitors close to the device pins for stable current-limit behavior.
TPS2054AD - Quad 500mA USB Power Distribution Switch | TI
The Texas Instruments TPS2054AD is a quad-channel current-limited power-distribution switch integrating four 80 mOhm N-channel MOSFET high-side switches, delivering 500 mA continuous current per channel (0.9 A minimum current limit) from a 2.7 V to 5.5 V input range in a 16-pin SOIC (D) package. A power-distribution switch, also called a high-side load switch or USB power switch, is a power management IC that sits between a supply rail and a load, turning the load on and off with a logic-level enable signal while protecting the upstream supply from faults. Within the power management hierarchy, it belongs to the power-distribution switch and load-driver class, complementing voltage regulators and hot-swap controllers in multi-port systems. Key features include independent enable inputs (CMOS- and TTL-compatible, active-high) for each channel pair, a per-channel current limit with independent thermal and short-circuit protection, and a shared fault-report logic output that flags overcurrent conditions to a host controller. A 2.5 ms typical output rise time limits inrush current when switching heavy capacitive loads, and undervoltage lockout keeps the outputs off until the input rail is valid. Architecturally, each N-channel MOSFET switch is driven by an internal charge-pump gate driver, which keeps on-resistance low at only 80 mOhm and minimizes voltage drop at full 500 mA load. Response to short circuits is fast, protecting the input rail from brownout during fault events. Typical applications include USB host and hub port power switching, hot-plug power distribution in set-top boxes and peripherals, and multi-rail power sequencing in industrial systems where heavy capacitive loads and short circuits are likely. A key design consideration: at 5.5 V input and full load on all four channels, estimate conduction loss as 4 x I^2 x RDS(on) = 4 x 0.25 x 0.08 = 80 mW (estimated), which the SOIC-16 package dissipates without a heatsink, but PCB copper around pins still aids thermal relief. This page adds value beyond the manufacturer datasheet by synthesizing distributor pricing, drop-in same-brand alternatives (TPS2054BD, TPS2054DG4), and practical design notes for power-distribution switching designs.
TPS2054ADR - Quad USB Power Switch 0.5A | Texas Instruments
The Texas Instruments TPS2054ADR is a quad-channel USB power-distribution switch integrating four N-channel MOSFET high-side power switches with 0.5 A per-channel continuous load capability, 0.9 A overcurrent limit, 2.7 V to 5.5 V input range, and 80 mOhm typical on-resistance, housed in a 16-pin SOIC package supplied on tape and reel. A power-distribution switch, also called a load switch or high-side switch, is a power management IC that controls the delivery of a supply rail to a downstream load. In the system hierarchy it sits between a voltage regulator or USB VBUS source and the port or peripheral, providing controlled turn-on, fault isolation, and overcurrent protection. Power-distribution switches are a subclass of load drivers within the broader PMIC (power management IC) category, and USB power switches like the TPS2054ADR are specifically qualified for bus-powered port applications. Key features include four independently controlled switches in a single package, which reduces board area and BOM count versus four single-channel devices; a precision 0.9 A overcurrent limit per channel that protects upstream supplies during short-circuit events; controlled rise times that limit inrush current when charging heavy capacitive loads; and active-high enable logic with a fault-reporting output for system monitoring. The TPS2054A family is intended for applications where heavy capacitive loads and short circuits are likely to be encountered, according to the manufacturer product overview. Internal charge-pump驱动 of the N-channel MOSFET gates ensures low, flat on-resistance across the 2.7 V to 5.5 V input range, minimizing voltage drop at full 0.5 A load. Thermal and overcurrent protection circuitry shuts the affected channel down under fault conditions and auto-restarts when the fault clears, enabling robust hot-swap behavior in USB ports. Typical applications include USB host and hub port power switching (pairing naturally with hub controllers such as the TUSB8041), multi-port peripheral power distribution, hot-plug card-slot power control, and general-purpose 2.7 V to 5.5 V rail load switching in industrial and consumer systems. When designing with this device, decouple the IN pin with a low-ESR ceramic capacitor close to the package, and size output capacitors so inrush current stays within the 0.9 A current-limit threshold during turn-on. This page synthesizes distributor pricing, verified drop-in alternatives, comparison data, and practical design notes not found in the manufacturer datasheet, with pricing as of 2026-09-03.
TPS2054BDR - Quad 500mA Current-Limited Power Switch | Texas Instruments
The Texas Instruments TPS2054BDR is a quad-channel current-limited power-distribution switch featuring a 70 mOhm N-channel high-side MOSFET per channel, 500 mA continuous current per channel, and an operating input range of 2.7 V to 5.5 V, housed in a 16-pin SOIC (D) package with an active-high enable input. A power-distribution switch, also called a load switch or USB power switch, is a power management IC that sits between a supply rail and one or more loads, turning power on and off under logic control while protecting the supply from faults. Within the power-management hierarchy, load switches rank under PMICs alongside hot-swap controllers and e-fuses, and are essential wherever multiple downstream ports share one upstream supply. Key features of the TPS2054B include the precise 70 mOhm on-resistance that minimizes voltage drop at full 500 mA load, an accurate internal current limit specified between 0.75 A minimum and 1.25 A maximum, and integrated thermal and short-circuit protection that shuts the channel down during fault events. A 0.6 ms typical output rise time limits inrush current, undervoltage lockout (UVLO) prevents operation at marginal inputs, and a deglitched overcurrent (OC) fault flag reports faults to the host without chatter. Architecturally, each channel uses an N-channel MOSFET driven by an internal charge pump, with a bandgap-based current-limit threshold. When the load exceeds the limit or the die overheats, the device reduces or removes gate drive and asserts the open-drain OC output after a deglitch period, preventing nuisance trips during transient connector events. Typical applications include USB host and hub port power switching, hot-plug power distribution in set-top boxes and monitors, and multi-port peripheral protection in industrial and consumer systems. The quad configuration lets one 5 V rail feed four independently switched ports. Design consideration: total on-chip dissipation is I-squared-R per channel, so at 500 mA per channel the 70 mOhm switch dissipates only about 17.5 mW per channel, but PCB copper around the SOIC-16 still sets the junction temperature. This page adds value beyond the datasheet by synthesizing distributor pricing tiers, drop-in alternatives including the ST2054BDR cross-brand equivalent, and practical design notes in one place. Pricing shown is as of 2026-09-03.
TPS2062CDGNR - Dual 1A USB Power Switch | Texas Instruments
The Texas Instruments TPS2062CDGNR is a dual-channel, current-limited, power-distribution switch designed for USB and other hot-swap applications where heavy capacitive loads and short-circuits may be encountered. It integrates two 70-mΩ high-side N-channel MOSFET switches with independent enable inputs, providing a compact and robust power-switching solution in an 8-pin HVSSOP (DGK) package with exposed thermal pad. The device operates over an input voltage range of 2.7V to 5.5V and supports a continuous load current of 1A per channel, with a fixed current-limit threshold of 1.5A (typical) and an accurate ±20% current-limit tolerance. A power-distribution switch is a type of load switch that provides controlled power delivery to downstream circuits, offering protection against overcurrent, short-circuit, and over-temperature conditions. It sits between the power source and the load, acting as a smart switch that can be enabled or disabled via a control signal. In the system hierarchy, a power-distribution switch is a subset of power management ICs, which also include voltage regulators, DC-DC converters, and battery management devices. The TPS2062C family is specifically optimized for USB ports, where it ensures safe power delivery and protects the host controller from fault conditions. Key features of the TPS2062CDGNR include a fast overcurrent response time of 2 µs (typical), which quickly limits fault current to protect upstream components. The device also provides reverse current blocking, output discharge function, soft-start to reduce inrush current, and under-voltage lockout (UVLO) to ensure proper operation during power-up. Built-in over-temperature protection and short-circuit protection further enhance system reliability. The active-low enable inputs allow for simple logic control, and the 70-mΩ on-resistance minimizes power loss and voltage drop across the switch. Technically, the TPS2062CDGNR uses a constant-current limiting scheme that maintains a safe output current during overload conditions, preventing damage to the switch and the load. The output discharge function actively pulls the output to ground when the switch is disabled, ensuring no residual voltage remains on the load. The soft-start feature limits inrush current when driving capacitive loads, which is critical for USB applications where downstream capacitors can be large. The device is specified for operation over the industrial temperature range of -40°C to +125°C, making it suitable for a wide range of environments. Typical applications include USB ports on computers, hubs, and peripherals, as well as general-purpose power switching in consumer electronics, industrial equipment, and set-top boxes. The dual-channel configuration allows two independent loads to be controlled from a single device, saving board space and cost. The TPS2062CDGNR is also ideal for powering downstream devices in systems that require hot-swap capability, such as docking stations and battery chargers. When designing with this device, ensure that the input and output capacitors are placed close to the pins to minimize parasitic inductance and maintain stable operation. The exposed thermal pad should be soldered to a large copper area on the PCB to enhance heat dissipation, especially when operating at high currents. Additionally, the enable pins should be driven with proper logic levels to avoid unintended switching.
TPS2062DR - Dual 1A USB Power Switch | Texas Instruments
The Texas Instruments TPS2062DR is a dual-channel, current-limited power distribution switch designed for USB and general-purpose power management applications. It integrates two 70-mΩ high-side N-channel MOSFETs, each capable of delivering up to 1 A continuous current, with an input voltage range of 2.7 V to 5.5 V. The device is housed in an 8-pin SOIC (D) package and features an active-low enable input, making it suitable for power sequencing and hot-swap applications. A power distribution switch is a semiconductor device that controls and protects power delivery to downstream loads. It typically includes a high-side MOSFET, current sensing, and protection features such as overcurrent, thermal shutdown, and undervoltage lockout. In a system hierarchy, the TPS2062DR sits between the main power rail and peripheral devices, acting as a smart switch that can be turned on/off via a logic signal while providing fault protection. Key features of the TPS2062DR include a 70-mΩ high-side MOSFET, 1-A continuous current per channel, accurate current limit (1.1 A min, 2.1 A max), thermal and short-circuit protection, undervoltage lockout, deglitched fault report (OC), and a typical rise time of 0.6 ms. The active-low enable input allows for straightforward control from microcontrollers or logic gates. The device operates over a junction temperature range of -40°C to 125°C, making it suitable for industrial and automotive environments. Technically, the TPS2062DR uses a current-limited architecture that ensures safe operation under overload conditions. The accurate current limit prevents excessive current draw, protecting both the switch and the load. The deglitched fault report (OC) provides a clean signal to the host controller, avoiding false triggers from transient currents. The undervoltage lockout ensures the switch remains off until the input voltage is stable, preventing erratic behavior during power-up. Typical applications include USB port power switching, hot-swap power distribution, and power management in consumer electronics, industrial equipment, and networking devices. The dual-channel configuration allows independent control of two loads, making it ideal for applications requiring multiple power domains. When designing with the TPS2062DR, ensure adequate input and output capacitance to maintain stability and minimize voltage transients. Place the device close to the load to reduce parasitic inductance and improve fault response. The active-low enable pin should be pulled up or driven by a logic signal; do not leave it floating.
TPS2115APW - 1.25A, 5.5V Power Mux w/ Status | Texas Instruments
The Texas Instruments TPS2115APW is a 2.8-V to 5.5-V, 84-mΩ, 1.25-A autoswitching power multiplexer (power mux) housed in an 8-pin TSSOP (PW) package. It accepts two input supplies (IN1 and IN2) and delivers a regulated output to a common load with sub-ohm (84 mΩ typical) N-channel MOSFET pass elements per channel. The device features manual and automatic switchover modes, a STATUS output flag, and cross-conduction blocking logic to prevent momentary shorting between the two sources during transitions. A power mux is a category of power-management IC that arbitrates between two or more DC input sources (battery, wall adapter, USB, auxiliary rail) and routes one of them to the load. Within the broader taxonomy, power muxes sit below load switches and above simple ideal-diode OR-ing controllers, combining the low-loss benefits of MOSFET pass elements with intelligent source-selection logic. The TPS2115A family specifically targets systems requiring seamless transitions between a primary and backup supply without brown-outs on the load. Key features of the TPS2115APW include 84 mΩ typical on-resistance per channel, low 0.5 µA standby current, programmable current limiting, inrush current control, thermal shutdown protection, and a wide 2.8 V to 5.5 V operating range on both input rails. The integrated STATUS pin reflects which source is currently active, enabling host-side telemetry in multi-rail systems. Architecturally, the TPS2115APW uses back-to-back N-channel MOSFETs per channel driven by charge-pumped gate drivers. The body-diode reverse-blocking design prevents unintended current flow from a higher-voltage rail into a lower-voltage rail. The control logic implements break-before-make switching with user-programmable switchover thresholds and switching speed. Typical applications include battery-backed-up portable electronics, USB/wall-adapter power switching in handheld terminals, multi-rail industrial sensor nodes, redundancy power OR-ing in 5V systems, and any application requiring glitch-free transitions between two DC sources. When designing with the TPS2115APW, consider that the TSSOP-8 package has a thermal resistance of approximately 150 °C/W; continuous 1.25 A operation at high VIN requires adequate copper pour. The MS pin (mode select) and ILIM pin (current limit) require external component selection to balance inrush vs steady-state behavior. Cross-conduction blocking eliminates the need for external back-to-back FETs, simplifying BOM. This page synthesizes distributor pricing, drop-in alternatives within the TSSOP-8 footprint, and design guidance not found in the manufacturer datasheet alone - giving procurement and design engineers a one-stop reference for source-selection decisions.
TPS2121RUX - 22V 4.5A Priority Power MUX | Texas Instruments
The Texas Instruments TPS2121RUX is a 2.7-V to 22-V, 56-mΩ, 4.5-A priority power multiplexer (power MUX) with seamless switchover, housed in a 12-pin VQFN-HR (RUX) package measuring 2.0 mm × 2.5 mm. It manages two input power sources (IN1 and IN2) and selects one to power a single output (OUT) according to a user-defined priority scheme. The device supports up to 4.5 A continuous load current with an internal 56-mΩ (typical) Rds(on) MOSFET per channel, with adjustable current limit set by an external resistor. A power multiplexer is a load-sharing/redundancy switch that allows a system to draw power from one of two sources with priority logic, automatic switchover, and in-rush control. The TPS2121 belongs to the ORing controller / power MUX / load-switch product hierarchy, sitting between discrete MOSFET ORing designs (anode-to-cathode diodes or ideal-diode controllers) and full PMIC solutions. It integrates dual back-to-back N-channel MOSFETs, priority arbitration, adjustable current limit, soft-start, and seamless fast switchover (< 5 µs) inside a tiny QFN footprint, eliminating dozens of discrete components. Key features include 2.7-V to 22-V operating input range, 56-mΩ per-channel Rds(on), 4.5-A continuous current capability, adjustable current limit (ILIM), seamless switchover within 5 µs, and a logic-controlled priority mode (PR1 = High → IN1 priority; PR1 = Low → IN2 priority). The VQFN-HR-12 (RUX) package has an exposed thermal pad (PowerPAD) for low thermal resistance, supporting up to ~2 W continuous dissipation on a modest PCB copper pour. The device operates over -40 °C to +125 °C junction temperature and is characterized for industrial-grade environments. The architecture uses TI's priority-based power-path control: the device continuously compares IN1 and IN2 voltages against an internal reference (2.5 V typical on PR1) and switches to the higher-priority source when it is valid. During switchover, internal break-before-make control prevents cross-conduction; the output is held up by output capacitance during the brief (~5 µs) transition. The current-limit and soft-start blocks protect against in-rush spikes when a freshly-selected source is brought online. Typical applications include redundant power rails in industrial PLCs and factory automation, backup battery switching in portable medical and IoT devices, USB-C PD source multiplexing, multi-battery Point-of-Sale (POS) terminals, and automatic transfer of AC adapters versus battery in notebook docking stations. The compact 2 mm × 2.5 mm footprint makes it ideal for space-constrained designs that previously required a discrete ORing controller plus two MOSFETs. When designing with the TPS2121, place input and output ceramic capacitors as close as possible to the IC pins (10 µF minimum on IN1, IN2, and OUT recommended) to minimize voltage droop during switchover. Use the PR1 resistor divider to set the VIN1 priority threshold, set ILIM with an external resistor (RILIM = K / ILIM), and provide adequate copper area on the PowerPAD for thermal dissipation. Avoid parallel connection of multiple TPS2121 units - one device per system is standard. This page synthesizes distributor pricing, drop-in alternatives, prioritized selection guidance, and practical PCB layout notes that go beyond a typical manufacturer datasheet summary.
TPS22919-Q1 - 5.5V 1.5A Load Switch SC-70-6 | Texas Instruments
The Texas Instruments TPS22919-Q1 is a self-protected, single-channel load switch with controlled slew rate that integrates an N-channel MOSFET operating from 1.6 V to 5.5 V input, supporting up to 1.5 A of continuous current in a 6-pin SC-70 (DCK) package. The device offers a 90 mOhm typical on-resistance and AEC-Q100 Grade 1 automotive qualification. A load switch is a power management IC that acts as an electronic switch between a power rail and its load, enabling or disabling power delivery under logic control. Load switches sit within the power distribution and protection hierarchy of a system, complementing voltage regulators, e-fuses, and hot-swap controllers. They are used to sequence rails, reduce leakage in standby, and isolate faults downstream. Key differentiating features of the TPS22919-Q1 include controlled output slew rate for inrush-current limiting during turn-on, adjustable quick output discharge (QOD) that pulls the output low when the switch is off, and integrated self-protection including short-circuit current limiting. According to TI, the device is qualified for automotive applications under AEC-Q100 device temperature grade 1. The internal N-channel MOSFET pass element gives a low, well-controlled on-resistance of 90 mOhm, which limits voltage drop: at 1 A the drop is roughly 90 mV, dissipating about 90 mW. The controlled slew rate soft-starts capacitive loads, avoiding the large inrush spikes that can sag upstream rails or trip protection circuits. The QOD function is adjustable via an external resistor, letting designers trade discharge speed against pull-down current. Typical applications include automotive camera and sensor modules, infotainment power distribution, peripheral-rail switching in ADAS domains, and portable or industrial designs needing fault-isolated power gating. The wide 1.6 V to 5.5 V input range covers 1.8 V, 3.3 V, and 5 V rails in one footprint. For design, account for the Rds(on) power loss at high current, ensure the ON-pin logic threshold matches the controlling GPIO, and size the QOD resistor for the required discharge time. Do not rely on the switch to regulate voltage - it only gates the rail. This page synthesizes distributor availability data, drop-in alternatives, and practical design guidance not found in the manufacturer datasheet.
TPS2291L02BYCJR - 2A 22mΩ Load Switch | TI
The Texas Instruments TPS2291L02BYCJR is a compact 5.5V, 2A load switch with 22 mΩ on-resistance and 90 nA quiescent current, housed in a 4-ball DSBGA (0.62 mm x 0.62 mm) wafer-scale package. A load switch is a power management IC that places a power MOSFET between a supply rail and its load, allowing a controller to gate power on and off electronically. In the system power hierarchy, load switches sit between the voltage regulator (or battery) and downstream loads such as sensors, radios, and processors, providing controlled power sequencing, inrush limiting, and leakage isolation. They are essential in battery-powered designs where every microamp of standby drain matters. Key features of the TPS2291L02 include an input voltage range of 1.05V to 5.5V, a maximum continuous current of 2A, and an extremely low 90 nA quiescent current. A quick output discharge (QOD) function actively pulls the output low when the switch is disabled, preventing floating rails from back-powering the load. The controlled turn-on time limits inrush current during startup, and the enable (EN) pin interfaces directly with low-voltage control signals from MCUs and processors. Internally, the device uses an N-channel MOSFET as the pass element, driven by an internal charge pump, which enables low RON across the full input range while keeping the die tiny enough for a 0.62 mm square DSBGA footprint. This makes it suitable for space-constrained portable designs. Typical applications include smartphone and tablet peripheral rail switching, battery-powered IoT sensor power gating, camera module power control, and power sequencing in multi-rail processor systems where module power-up order must be enforced. When designing with this part, remember that DSBGA packages require careful PCB layout: lands must be non-solder-mask-defined per TI recommendation, and inspection is best done with X-ray. Also budget for the switch's RON-related drop at 2A continuous load. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
TPS22954-Q1 - 5.7V 5A 14mΩ Load Switch | TI | Automotive
The Texas Instruments TPS22954-Q1 is a single-channel N-channel high-side load switch rated for 5.7 V input, 5 A continuous current, with an ultra-low 14 mΩ on-resistance, housed in a 10-pin WSON (DQC, 3x2 mm) package. This automotive-grade power-distribution switch integrates controlled turn-on, adjustable rise time, voltage monitoring, and output discharge functions in a compact footprint. A load switch is a power management IC placed in series with a voltage rail to connect or disconnect power to downstream loads under logic control. Within the power management hierarchy, load switches sit between the supply and the load, complementing voltage regulators by adding switching, inrush control, sequencing, and fault protection. They are essential wherever rails must be turned on softly, sequenced in order, or monitored for faults. Key features of the TPS22954-Q1 include the 14 mΩ typical on-resistance that minimizes voltage drop and conduction loss at full 5 A load, a wide 0.7 V to 5.7 V operating range covering 1.0 V, 1.8 V, 3.3 V, and 5 V rails, an adjustable rise time via an external capacitor for controlled inrush, and quick output discharge for defined rail states. The device is characterized for operation over the -40°C to +105°C ambient range required by automotive applications. Technically, the switch uses a low-RON N-channel MOSFET pass element with an integrated charge pump to drive the gate above the rail, delivering very low insertion loss. Controlled turn-on suppresses inrush current peaks that would otherwise cause supply droop, while voltage monitoring and output diagnostics give the system controller visibility into rail health - valuable for functional-safety oriented designs. Both DQC (0.5 mm pitch) and DSQ (0.4 mm pitch) package versions are supported on the TPS22954EVM evaluation module. Typical applications include automotive ADAS and infotainment power rails, electronic control unit (ECU) subsystem sequencing, power switching for cameras, displays, and communication modules, and general high-current rail switching in industrial systems where a Q100-class device is preferred. A key design consideration is thermal management: at 5 A and 14 mΩ, conduction losses are roughly 0.35 W (estimated from I²R), so a solid ground-plane pour under the die attach pad is important. Also account for the adjustable rise-time capacitor sizing against your inrush budget. This page synthesizes distributor pricing, same-package drop-in alternatives, and practical design guidance not found in the manufacturer datasheet.
TPS22970YZPR - 3.6V 4A 4.7mΩ Load Switch | Texas Instruments
The Texas Instruments TPS22970YZPR is a small, space-saving N-channel high-side load switch rated for 3.6 V operation, 4 A pulsed switch current, and 4.7 mΩ typical on-resistance, packaged in an 8-ball DSBGA (WCSP, YZP) chip-scale package. It integrates an N-channel MOSFET biased by a charge pump, an on/off logic input, and an optional output discharge resistor for controlled turn-off behavior. What is a load switch? A load switch is a power-management device that uses an internal MOSFET to connect or disconnect a downstream circuit (a "rail" or "load") from an upstream power source. Unlike a DC-DC converter, a load switch does not regulate voltage — its role is gating, inrush control, sequencing, isolation, and reverse-current blocking. Load switches belong to the broader category of power distribution switches (PDswitches), which sit hierarchically below discrete MOSFETs but above simple pass-gate FETs because they integrate control, protection, and timing into a single IC. Key features of the TPS22970YZPR include a wide input voltage range of 0.65 V to 3.6 V (compatible with 1-cell Li-ion rails as well as 1.0 V/1.2 V/1.8 V/2.5 V/3.3 V logic rails), continuous current up to 2 A and pulsed current up to 4 A, 4.7 mΩ RON that minimizes conduction loss, controlled turn-on to limit inrush current, and an internal discharge path that pulls the output to ground when the switch is disabled. The device operates over -40°C to +105°C and ships on a 0.9 mm pitch WCSP footprint measuring roughly 1.50 mm × 1.50 mm. Architecturally, the integrated charge pump generates a VGS boost above VIN so the NMOS can fully enhance even at very low input voltages — a non-trivial achievement because a standard NMOS would otherwise struggle to pass sub-1 V rails cleanly. This makes the part especially attractive for ultra-low-voltage core rails in mobile and battery-powered designs. Typical applications include power gating in smartphones, wearables, SSDs and solid-state storage modules, portable medical devices, and IoT sensor nodes where the load switch isolates a sleeping sub-system from a battery to extend standby life. The output discharge resistor is particularly useful in multi-rail systems where residual charge on a disabled rail could otherwise leak through the body diode of a downstream load. When designing with this device, pay close attention to the PCB footprint: the WCSP-8 (DSBGA) package requires NSMD pads with precise solder-mask openings and reflow profile matched to JEDEC J-STD-020. Avoid placing vias directly under the balls and follow TI's WCSP layout recommendations. This page synthesizes distributor pricing from DigiKey and Mouser, drop-in alternatives from TI's load-switch family, and practical design notes not found in the manufacturer datasheet.
TPS22990DMLR - 10A, 5.5V, 3.9mOhm Load Switch | TI
The Texas Instruments TPS22990DMLR is a single-channel N-channel high-side load switch delivering up to 10 A continuous current with a 3.9 mOhm typical on-resistance, operating over an input voltage range of 0.6 V to 5.5 V in a 10-pin WSON (3x2 mm) package (DML, WSON-10 with exposed pad). A load switch is a power distribution IC that sits between a supply rail and its load, using an internal MOSFET pass element to connect, disconnect, and protect the rail. In the power-management hierarchy, load switches are siblings of hot-swap controllers and eFuses within power distribution ICs, and they are commonly paired with DC-DC converters and LDO regulators to sequence and gate individual rails. Key features of the TPS22990 include the ultra-low 3.9 mOhm on-resistance, which minimizes voltage drop and conduction power loss at high load currents; controlled and adjustable turn-on slew rate via an external CT capacitor, which suppresses inrush current and bus voltage sag; and an integrated power-good (PG) indicator for rail monitoring and sequencing. An optional quick output discharge (QOD) function actively pulls the output low when the switch is off. Architecturally, the device integrates an N-channel MOSFET pass element with gate-drive circuitry powered from a VBIAS supply, allowing the switch to operate down to 0.6 V input while supporting modern low-voltage rails. The adjustable rise time lets designers trade startup time against inrush current for a given output capacitance. Typical applications include server and notebook point-of-load power gating, SSD and storage rail switching, multi-rail power sequencing in SoC and FPGA systems, and battery-powered equipment where low voltage drop is critical. A key design consideration: at 10 A, even 3.9 mOhm dissipates roughly 0.39 W, so PCB copper area under the exposed pad is essential for thermal management. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
TPS22990NDMLR - 10A, 5.5V, 3.9mOhm Load Switch | TI
The Texas Instruments TPS22990NDMLR is a 5.5 V, 10 A, 3.9 mOhm single-channel N-channel high-side load switch housed in a 10-pin WSON (3x2 mm) package, featuring an adjustable controlled turn-on, integrated power-good (PG) indicator, and quick output discharge (QOD) function. A load switch is a power distribution switch, a type of power management IC that sits between a supply rail and its load to gate power on and off, control inrush current, and isolate faults. In the system hierarchy, it belongs to the family of high-side switches used in power trees alongside hot-swap controllers, e-fuses, and DC-DC converters, enabling fine-grained power sequencing and rail management. Key differentiating features include an ultra-low 3.9 mOhm on-resistance, which minimizes both the voltage drop across the switch and conduction power loss at the full 10 A continuous current, and a wide 0.6 V to 5.5 V input voltage range that spans modern sub-1 V core rails up to standard 5 V rails. The adjustable slew rate (soft-start), set via an external capacitor, suppresses inrush current during turn-on, while the integrated PG output simplifies power-rail sequencing and monitoring without external supervisory circuitry. The N-channel MOSFET architecture avoids the body-diode conduction and rds(on) penalties of older P-channel designs at high current. Internal control logic drives the gate with a controlled ramp defined by the CT pin capacitor, and the QOD option actively discharges the output when the switch is disabled, preventing floating rails in multi-rail systems. ESD protection on the pins adds robustness during assembly and handling. Typical applications include SSD and storage power distribution, FPGA and processor core-rail sequencing, networking cards, battery-powered portable systems, and server backplane point-of-load switching, all of which benefit from low-loss high-current switching with controlled turn-on. Design consideration: at 10 A, conduction loss is approximately I2 x R, so PCB copper pour on the IN and OUT pins is essential for thermal management. This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
TPS22990NDMLT - 10A, 5.5V, 3.9mOhm Load Switch | TI
The Texas Instruments TPS22990NDMLT is a 5.5 V, 10 A single-channel load switch with 3.9 mOhm on-resistance, housed in a 10-pin WSON (3x2 mm) package. It integrates an N-channel MOSFET high-side switch operating from a 0.6 V to 5.5 V input range, with a controlled and adjustable turn-on and an integrated power-good (PG) indicator. A load switch is a power management IC that sits between a supply rail and its load, using an internal MOSFET to connect or disconnect power under logic control. Load switches belong to the broader family of power distribution switches and hot-swap devices within power management ICs. They protect downstream circuitry during power sequencing, limit inrush current, and isolate faulty or idle loads to save energy in multi-rail systems. Key differentiating features of the TPS22990NDMLT include the very low 3.9 mOhm on-resistance, which minimizes conduction losses at the full 10 A continuous current (approximately 0.39 W of estimated I2R dissipation), the wide 0.6 V to 5.5 V input range that supports low-voltage core rails as well as standard 5 V and 3.3 V rails, adjustable rise time for inrush-current control, and soft-start behavior. An integrated power-good output simplifies rail monitoring and power-sequencing handshakes, and the TPS22990N variant adds optional output discharge functionality to actively pull the output low when the switch is off. Technically, the device uses an N-channel MOSFET as the pass element and requires a bias supply above the input rail to fully enhance the switch, keeping the on-resistance low even at sub-volt input levels. The controlled turn-on circuitry charges the output gradually, with the slew rate settable by an external capacitor, allowing designers to trade startup time against inrush current and voltage droop on the upstream rail. Typical applications include SSD and storage power distribution, server and datacenter point-of-load switching, FPGA and ASIC core-rail power sequencing, battery-powered portable systems, and industrial 5 V rail isolation. When designing with this part, provide a solid ground plane and adequate copper area for the VOUT pins, since 10 A of continuous current demands low-impedance thermal and electrical paths. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
TPS22991IBNRAAR - 5.5V 2.7A Load Switch UQFN-HR | Texas Instruments
The Texas Instruments TPS22991IBNRAAR is a 5.5V, 2.7A, 28 mOhm single-channel load switch with controlled slew rate, housed in a 4-pin UQFN-HR (RAA) package measuring just 0.85 mm x 0.75 mm with 0.4 mm pitch. The device integrates an N-channel MOSFET that operates over a 1.0V to 5.5V input voltage range and is characterized for operation from -55C to +125C, covering extreme-temperature and wide-temperature industrial designs. A load switch is a type of power management IC (power distribution switch) that gates a voltage rail on and off under logic control, protecting downstream circuitry from inrush current and enabling power sequencing. Within the power-management hierarchy, the TPS22991I family sits between a voltage regulator and a simple discrete MOSFET switch: it provides controlled turn-on without regulation of the rail voltage itself. Key features include a low on-resistance of 28 mOhm, which minimizes voltage drop and conduction loss at multi-ampere loads, and a controlled slew rate that limits inrush current when charging large bulk capacitance. The ON/OFF control input interfaces directly with low-voltage GPIO signals, allowing the switch to be driven by microcontrollers and processors operating well below the main rail voltage. Low shutdown leakage makes the device suitable for battery-powered designs where off-state quiescent draw must be minimized. Technically, the integrated N-channel pass element is driven by an internal charge-pump-free gate-drive scheme referenced to the input pin, with slew-rate control implemented through a controlled gate-drive ramp. This gives a predictable, monotonic output voltage ramp that avoids the sharp turn-on transients typical of uncontrolled discrete MOSFET switching. Typical applications include power-rail gating for battery-powered portable electronics, module power sequencing in processors and FPGAs, and load switching in industrial sensors operating over extended temperature ranges. The tiny 0.85 mm x 0.75 mm footprint suits densely packed wearables and IoT modules. Design consideration: verify the device pinout carefully. Unlike most single-channel load switches that use an IN-OUT-GND-EN ordering, the TPS22991I pinout is documented as special in TI's E2E forum, so confirm pin assignments against the manufacturer datasheet before layout. This page synthesizes distributor availability, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
TPS22991IBRAAR - 2.7A, 28mOhm Load Switch | Texas Instruments
The Texas Instruments TPS22991IBRAAR is a small, low-ON-resistance single-channel load switch with controlled slew rate, integrating an N-channel MOSFET rated for 2.7 A continuous current with 28 mOhm typical ON-resistance, operating from a 1.0 V to 5.5 V input supply in a 4-pin UQFN-HR (0.85 mm x 0.75 mm) package. The IBR suffix denotes the industrial temperature variant (J version, -40C to +125C). A load switch is a type of power distribution switch - a power management IC that sits between a supply rail and its load, turning power on and off under logic control. Within the power management hierarchy, load switches bridge the gap between simple discrete MOSFET switching circuits and full hot-swap controllers, providing controlled turn-on, low leakage, and small footprint in a single device. Key features include the 28 mOhm N-channel MOSFET pass element, a controlled slew rate that limits inrush current during turn-on, and very low shutdown leakage current, which is critical for battery-powered designs that must conserve charge in the off state. The ON/OFF control input interfaces directly with low-voltage GPIO or processor control signals, eliminating the need for level-shifting circuitry in many designs. Technically, the device integrates the MOSFET switch and edge-rate control in the tiny 0.85 mm x 0.75 mm UQFN-HR package, making it one of the smallest 2.7 A-class load switches available. The controlled turn-on behavior suppresses voltage droop on the upstream rail when charging large downstream capacitance, protecting sensitive loads from supply dips. Typical applications include power rail sequencing and power muxing in portable and battery-powered electronics, peripheral power gating in smartphones, tablets, and wearables, and module power control in IoT and industrial sensor nodes. When designing with this part, verify the pinout against the datasheet before layout: the TPS22991 pin assignment differs from the conventional IN-OUT-GND-EN arrangement common to most single-channel load switches, a point highlighted in TI's E2E support forum. Also confirm that the upstream rail can tolerate the inrush into downstream bulk capacitance despite the slew-rate control. This page synthesizes distributor availability, drop-in alternative analysis, pricing tiers, and practical design notes not found in the manufacturer datasheet.