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TPS610981 - 3.3V Ultra-Low IQ Boost + LDO | Texas Instruments
The Texas Instruments TPS610981 is an ultra-low quiescent current synchronous boost converter with an integrated LDO, providing two regulated output rails from a single low-voltage input. It delivers a fixed 3.3V output and operates from input voltages as low as 0.7V, supporting one-cell alkaline, NiCd, NiMH, coin cell, and one-cell Li-Ion/Li-polymer batteries. The device comes in a compact 6-pin WSON (1.5 mm x 1.5 mm) surface-mount package (DSG suffix). A boost converter is a type of switching DC-DC power supply (part of the broader power management IC hierarchy) that steps an input voltage up to a higher regulated output using an inductor, switching FETs, and a control loop. Unlike a linear regulator, a boost converter can multiply battery voltage, making it essential when system electronics need 3.3V but the cell provides only 1.5V or a discharging Li-Ion cell falls below 3.3V. The TPS61098x family additionally integrates a second low-dropout linear regulator or load switch, eliminating an external LDO and board space. Key features include synchronous rectification for high light-load efficiency, ultra-low quiescent current that extends battery life in always-on systems, integrated output discharge, and power good signaling per TI's product comparison data. The -40C to +85C operating range suits industrial and portable environments. Technically, the synchronous topology removes the external Schottky diode, improving efficiency and reducing BOM count. The two-rail architecture lets designers power a microcontroller rail and a separate sensor or RF rail from one converter with excellent cross regulation. Typical applications include battery-powered sensor nodes, energy harvesting systems, portable medical devices, and low-power IoT endpoints where every microamp of standby current matters. Design consideration: because the input can be driven below 0.7V by a deeply discharged cell, verify minimum input and inrush behavior, and follow TI datasheet (Rev. F) layout guidance for short inductor and output capacitor traces to ensure loop stability.
TPS610981 - 3.3V Ultra-Low Iq Boost + LDO | Texas Instruments
The Texas Instruments TPS610981 is an ultra-low quiescent current synchronous boost converter with an integrated low-dropout linear regulator (LDO), delivering a fixed 3.3V main output plus a secondary LDO rail in a compact 6-pin WSON (1.5x1.5mm) package. It operates from a single-cell alkaline, NiCd, NiMH, coin cell, or Li-Ion battery. A boost converter is a DC-DC step-up topology within the broader voltage regulator family of power management ICs. It raises a lower input voltage to a higher regulated output using an inductor and synchronous switching elements. The TPS61098x family integrates this boost converter with either an LDO or a load switch, providing two output rails from one IC - a key differentiator for space-constrained battery designs. Key features include ultra-low quiescent current of typically 300 nA, extending battery life in standby for years-long deployments. The synchronous boost delivers up to 300 mA at 3.3V from a 1.8V input with efficiency up to 95%, while the integrated LDO supplies a clean, low-noise rail for analog or RF circuitry. True load disconnect during shutdown prevents battery drain, and integrated overcurrent and overtemperature protection ensure robust operation. Architecturally, the device uses pulse-frequency modulation (PFM) at light loads to minimize quiescent current, transitioning to PWM at heavier loads for low ripple and stable regulation. The LDO is powered from the boost output, generating a second rail with no additional magnetics. Typical applications include wireless sensor nodes, hearing aids, portable medical devices, and IoT endpoints where the 3.3V rail powers microcontrollers and RF transceivers while the LDO rail feeds analog sensors or audio codecs. For design, select the recommended 2.2 uH inductor and place input/output capacitors close to the pins to minimize ripple and preserve the ultra-low standby current advantage.
TPS61160DRVR - Boost White LED Driver 18V | Texas Instruments
The Texas Instruments TPS61160DRVR is a white LED driver boost converter with digital and PWM brightness control, delivering up to 10 series LEDs from a 2.7 V to 18 V input, with a 40-V rated integrated switch FET and 700 mA switch current limit in a 2-mm x 2-mm 6-pin WSON (DRV) package. An LED boost driver is a switching regulator (part of the DC-DC converter family of power management ICs) that steps a lower input voltage up to the higher voltage needed by a series LED string. Because LED brightness is proportional to forward current rather than voltage, boost LED drivers such as the TPS61160 regulate current through the string via a low-side sense resistor, providing constant-current operation independent of LED forward-voltage variation. Key features include a 600 kHz fixed switching frequency that shrinks the external inductor and capacitors, 26 V open-LED protection that clamps output overvoltage if the LED string fails open, and a 200 mV current-sense feedback reference that minimizes sense-resistor power loss and improves efficiency. Maximum duty cycle is 93%, supporting high step-up ratios. Technically, the integrated 40-V power MOSFET eliminates an external switch FET, cutting BOM count and layout area. Brightness control is flexible: apply a direct PWM signal, or use the single-wire digital interface that accepts PWM on the CTRL pin for stepless dimming without a dedicated MCU PWM output. Typical applications are LCD backlighting for smartphones, tablets, and portable navigation devices, plus general constant-current LED illumination powered by single-cell Li-ion or multi-cell alkaline/NiMH batteries. Design consideration: the 26 V open-LED protection clamp of the TPS61160 (38 V on the TPS61161) sets the maximum LED string voltage; verify the worst-case summed LED forward voltage stays safely below the clamp over temperature. Pricing cited as of 2026-09-01. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
TPS61165DBVR - 1.2A White LED Boost Driver, SOT-23-6 | TI
The Texas Instruments TPS61165DBVR is a high-brightness white LED driver housed in a 6-pin SOT-23 (DBV) package, integrating a 40-V-rated switch FET with a 1.2-A current limit. It operates over a 3-V to 18-V input range and uses a 1.2-MHz fixed-frequency PWM boost topology to drive series-connected LEDs. Reference voltage accuracy is specified at 2% with 200 mV typical, enabling tight LED current regulation via an external sense resistor. A boost converter (also called a step-up converter) is a switch-mode DC-DC converter that produces an output voltage higher than its input. Boost converters belong to the switching regulator family (alongside buck, buck-boost, SEPIC, and flyback topologies), which in turn falls under the broader category of voltage regulators within power management ICs. For LED driving, the boost topology is preferred when the LED string forward voltage exceeds the input supply - a common situation when powering white LEDs from a single-cell Li-ion battery or a 3.3-V/5-V rail. Key features include a built-in 38-V open-LED protection circuit, flexible 1-wire EasyScale digital brightness control, and PWM dimming capability. The 1.2-MHz switching frequency enables the use of small external inductors and ceramic capacitors, while the internal switch removes the need for an external FET. The SOT-23-6 package measures approximately 2.9 mm x 1.6 mm, making the IC suitable for space-limited handheld designs. The TPS61165DBVR uses peak-current-mode control with internal compensation, simplifying the external component selection to one inductor, input/output capacitors, a feedback resistor, and a sense resistor. This architecture balances regulation accuracy against BOM size, and the high switching frequency minimizes output ripple on the LED current. Load-disconnect during shutdown prevents leakage current through the LED string when the IC is disabled. Typical applications include single-cell Li-ion powered LED flash, smartphone backlight drivers, portable medical illumination, and industrial indicator panels. The wide VIN range also supports 9-V, 12-V, and 15-V bus systems, where the boost converter delivers tens of volts across multi-LED strings. For flash applications, the high switch current limit supports short-duration high-current pulses. When designing with this part, derate the inductor saturation current to at least 1.5 A to handle peak inductor currents during PWM dimming transients. Place the input capacitor and feedback resistors close to the IC pins to minimize switching noise injection into the analog control loop. The open-LED protection engages at approximately 38 V across the SW node - ensure the output capacitor and rectifier ratings exceed this threshold. This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and practical PCB design notes not consolidated in the TI datasheet, helping engineers shorten part selection and reduce time-to-prototype.
TPS61194PWPR - 4-Ch 100mA Low-EMI LED Driver | Texas Instruments
The Texas Instruments TPS61194PWPR is a low-EMI, high-performance four-channel LED driver with integrated DC-DC converter that supports both boost and SEPIC topologies, delivering up to 100 mA per channel in a 20-pin HTSSOP (PWP) package. The device operates from an input voltage range of 4.5 V to 40 V, with an internal switching frequency programmable from 300 kHz to 2.2 MHz, and integrates four high-precision current sinks that can be combined for higher drive current. According to the TI product page, the integrated DC-DC uses adaptive output voltage control based on LED current sink headroom, maximizing efficiency across a wide range of LED forward voltages. A four-channel LED driver is a power management IC that integrates a switching converter (boost or SEPIC) with multiple current-sink outputs. The converter stages up an input supply to the voltage required by the LED string, while the current sinks regulate individual LED strings with high accuracy. This category sits within the broader hierarchy of power management IC -> LED driver -> backlight driver -> display power, and is used wherever multiple LED strings must be driven with tightly matched brightness, such as in automotive clusters, industrial HMIs, and large LCD backlights. The TPS61194 is engineered specifically for low electromagnetic emissions, easing CISPR 25 / CISPR 32 compliance in automotive and industrial systems. Key features of the TPS61194PWPR include 4.5 V to 40 V wide VIN range, 100 mP / channel current capability with PWM dimming, integrated boost + SEPIC converter, 300 kHz to 2.2 MHz programmable switching frequency, and dedicated current-sink regulation. The HTSSOP-20 PowerPAD package provides a thermal resistance low enough to handle the internal converter losses, while the four parallel current sinks allow paralleling of strings for higher currents (up to 400 mP per device). The low-EMI architecture (with spread-spectrum option on the switching frequency) eliminates many of the input-filter trade-offs typical of high-power LED drivers. From an architectural perspective, the TPS61194 uses a peak-current-mode control boost/SEPIC converter with adaptive output voltage, which automatically tracks the minimum required VOUT to keep the current sinks in regulation. The internal current references are matched within approximately 1% channel-to-channel (per TI documentation), and PWM dimming is handled through a dedicated PWM input with a high-frequency gate signal passed directly to the MOSFETs in the current sinks. Compared to discrete solutions, the integration reduces BOM count by an inductor, a switching MOSFET, a sense resistor, and an external current mirror. Typical applications for the TPS61194PWPR include LCD backlighting for automotive infotainment displays, industrial HMI panels, RGB LED signage, and small to medium-size LED matrix panels. The wide VIN tolerance makes the part a natural fit for 12 V and 24 V nominal supplies where load-dump transients must be tolerated without brownout. When designing with the TPS61194, the most common pitfall is undersizing the output capacitor bank of the integrated boost converter - the adaptive VOUT control needs sufficient bulk capacitance to handle PWM dimming transitions without flicker. A second consideration is layout: the thermal pad on the HTSSOP-20 package must be soldered to a sufficiently large copper pour to keep junction temperature within the -40 C to +85 C operating range. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
TPS61194PWPRQ1 - 4-Ch 100mA Automotive LED Driver | TI
The Texas Instruments TPS61194PWPRQ1 is an automotive-grade, low-EMI, high-efficiency 4-channel LED driver with integrated DC-DC converter, supporting both boost and SEPIC topologies. It delivers up to 100 mA per channel across four high-precision current sinks that can be paralleled for higher current, and operates from 4.5 V to 40 V input to survive automotive stop/start, cold-crank, and load-dump transients. An LED driver with current sinks is a power-management IC that regulates current through LED strings rather than setting a fixed voltage; this keeps luminous intensity constant despite temperature-induced forward-voltage variations. The TPS61194PWPRQ1 sits in the LED-driver sub-category of power management ICs (hypernyms: LED driver -> lighting PMIC -> power management IC -> semiconductor), and is purpose-built for backlighting and accent-lighting rails inside vehicles. Key features include an adjustable switching frequency of 300 kHz to 2.2 MHz (sync input), spread-spectrum frequency modulation for EMI reduction, adaptive output voltage control driven by current-sink headroom, PWM dimming, and AEC-Q100 qualification. The device also integrates fault detection (open-LED, short-LED, thermal shutdown, and input under-voltage lockout) to meet automotive safety diagnostics. Typical applications include automotive infotainment display backlighting, instrument-cluster illumination, HUD projection, RGB ambient lighting, and small-to-medium TFT-LCD backlight drivers. The wide input range and SEPIC option allow the same part to drive LED strings whose forward voltage is either below or above the battery rail. When designing with the TPS61194PWPRQ1, place the input bypass capacitor and inductor as close to the SW pin as possible, keep the LED-current-setting resistors within 1% tolerance, and leave adequate copper area under the PowerPAD for thermal dissipation. Frequency selection should avoid the AM radio band (530 kHz to 1710 kHz) by using either below-band or above-band switching. This page synthesizes distributor pricing, AEC-Q100 drop-in alternatives, and practical EMI design notes not found in the manufacturer datasheet alone, helping automotive lighting engineers shorten the BOM-down and EMC-compliance cycle.
TPS61220DCK - 0.7V Input Boost Converter 200mA SC-70
The Texas Instruments TPS61220DCK is a 0.7-V input, adjustable output voltage synchronous boost converter with 5.5 µA quiescent current, housed in a 6-pin SC-70 (DCK) package measuring 2 mm × 2 mm. It delivers up to 200 mA switch current from input sources as low as 0.7 V, with an adjustable output range starting at 1.8 V. The device uses synchronous rectification to maximize efficiency at low duty cycles and is targeted at single-cell Li-Ion, Li-polymer, and 1-3 cell alkaline/NiCd/NiMH battery-powered products. A boost converter (also called a step-up converter) is a type of switched-mode DC-DC converter that produces a higher output voltage than its input voltage. In the power management IC hierarchy, boost converters fall under DC-DC converters -> voltage regulators -> power management ICs -> semiconductors. The TPS61220DCK's hysteretic controller topology eliminates the need for external compensation, simplifying design in space-constrained applications such as wearables and IoT sensor nodes. Key features include 5.5 µA quiescent current for extended battery life, automatic transition between PWM and pulse-frequency modulation (PFM) at light load, an EN pin for shutdown with sub-1 µA leakage, and built-in output disconnect that prevents reverse current from the output to the input when Vin exceeds Vout. The device operates across -40°C to +85°C industrial temperature range, and the SC-70 package enables PCB layouts as small as a few mm². The TPS61220 architecture uses synchronous rectification with an internal MOSFET pair, achieving efficiencies up to 95% at moderate loads. Its hysteretic control provides instant transient response without compensation loops, which is critical for powering microcontrollers and radio modules that exhibit abrupt load steps between sleep and active states. Typical applications include single-cell battery boost to 3.3 V for MCUs and BLE radios, two-cell alkaline boost to 5 V for USB-powered peripherals, low-voltage energy harvesting front-ends, and backup-power systems in metering and security sensors. The wide Vin range down to 0.7 V enables direct operation from nearly depleted single-cell batteries. When designing with this device, place the input/output capacitors and inductor as close as possible to the IC, and ensure the chosen inductor has low DCR (under 100 mΩ) and a saturation current rating above the peak switch current. This page synthesizes distributor pricing, same-family alternatives, and practical design guidance not consolidated in the TI product folder.
TPS61220DCKR - 0.7V Boost Converter, 5.5µA IQ, SOT-SC70 | TI
The Texas Instruments TPS61220DCKR is a 0.7-V input, adjustable output voltage step-up (boost) DC-DC converter with 5.5 µA quiescent current, packaged in a 6-pin SOT-SC70 (DCK) measuring 2 mm × 2 mm. It delivers up to 200 mA of switch current with an output voltage range of 1.8 V to 5.5 V and supports input voltages down to 0.7 V, making it ideal for single-cell alkaline, NiMH, or Li-Ion battery powered products. The device also includes a pass-through function that allows the load to be supplied directly from the input when VIN is high enough. A boost converter (also called a step-up converter or step-up DC-DC switching regulator) is a switched-mode power supply topology that produces a higher output voltage than its input. Boost converters sit inside the broader voltage regulator family (which also includes buck, buck-boost, and LDO topologies) and within the larger category of power management ICs. They are commonly used whenever a system rail must be derived from a low-voltage battery source where linear regulation would be inefficient or infeasible. Key features of the TPS61220 include up to 95% efficiency at typical operating conditions, 5.5 µA quiescent current for low standby drain, and startup into load from 0.7 V input. It supports a wide VIN range up to 5.5 V and provides a pass-through mode for low dropout operation. The 6-pin SC-70 package enables a very compact PCB footprint. Technically, the converter uses synchronous rectification and a fixed-frequency PWM control loop with internal power MOSFETs, achieving the high efficiency figure. The low quiescent current extends battery life during standby, while the wide operating input range allows the same part to be used across multiple battery chemistries without redesign. Typical applications include single-cell battery powered products such as wearables, IoT sensor nodes, remote controls, and handheld metering devices. The TPS61220 is also suitable for boosting Li-Ion battery voltage for 3.3 V or 5 V system rails and for low-voltage sensor bias supplies. When designing with this part, ensure that the input and output capacitors match the datasheet recommendations and that the peak switch current rating is not exceeded. The pass-through function should be considered when sequencing rails, as EN low does not disconnect the output from the input. This page synthesizes distributor pricing, drop-in compatible alternatives in the same SC-70 package, and practical design notes that go beyond the manufacturer datasheet summary.
TPS61230 - 5A Synchronous Boost Converter | Texas Instruments
The Texas Instruments TPS61230 is a high-efficiency synchronous step-up (boost) converter with an integrated 5-A switch, designed for products powered by a one-cell Li-Ion battery or a regulated 3.3-V rail. It provides an adjustable output voltage via an external resistor divider, with a typical input range of 2.5 V to 4.5 V and output up to 5 V. The device is available in a compact 3-mm x 3-mm VQFN-10 (DRC) package, enabling space-constrained designs. A boost converter, also known as a step-up converter, is a type of DC-DC switching regulator that produces an output voltage higher than its input voltage. It belongs to the broader family of switching voltage regulators, which are essential in power management ICs for efficiently converting and regulating electrical power. Unlike linear regulators, boost converters use an inductor and switches to transfer energy, achieving high efficiency even with large input-to-output voltage differences. Key features of the TPS61230 include a 5-A switch current limit, up to 96% efficiency, and automatic power-save mode for light loads, which reduces quiescent current to 20 µA. The device also offers overcurrent, overvoltage, and thermal shutdown protection. Its low RDS(on) switches minimize conduction losses, making it suitable for battery-powered applications where efficiency is critical. Technically, the TPS61230 uses a fixed-frequency PWM control scheme with a typical switching frequency of 1.5 MHz, allowing the use of small external components. The adjustable output is set with a resistor divider from the FB pin, and the device supports a soft-start function to limit inrush current. The integrated synchronous rectifier eliminates the need for an external Schottky diode, reducing component count and board space. Typical applications include portable electronics, battery-powered devices, and systems requiring a regulated 5-V rail from a lower voltage source. The TPS61230 is ideal for USB-powered devices, LED drivers, and sensor nodes where efficiency and small size are paramount. When designing with the TPS61230, ensure proper PCB layout with short, wide traces for high-current paths and adequate input/output capacitance to minimize voltage ripple. The inductor value should be selected based on the switching frequency and load current to maintain stable operation.
TPS61240DRVR - 5V 450mA 3.5MHz Synchronous Boost Converter | TI
The Texas Instruments TPS61240DRVR is a 5V fixed-output synchronous step-up (boost) DC-DC converter delivering up to 450 mA of load current from a 2.3 V to 5.5 V input rail, integrated into a 6-pin WSON (Wettable Flank Small Outline No-lead) DRV package with exposed thermal pad. The device operates at a fixed switching frequency of 3.5 MHz (typical, often listed as 4 MHz in marketing copy), enabling the use of a small 1 µH inductor and tiny ceramic capacitors while keeping the converter out of the AM band. A step-up (boost) converter is a switched-mode power supply topology that produces an output voltage higher than its input voltage by storing energy in an inductor and releasing it into a capacitor through a switching element. The synchronous variant replaces the conventional Schottky rectifier with a low-side MOSFET, achieving higher efficiency at light loads and removing the need for an external diode. The TPS61240DRVR specifically targets portable battery-powered applications such as those powered by one-cell Li-Ion / Li-Polymer or three-cell alkaline/NiCd/NiMH chemistries. Key differentiating features include a 500 mA input valley current limit, ultra-low 30 µA quiescent current for extended battery life, internal soft-start to limit inrush, and a power-good indicator with input-to-output isolation. The DRV package is only 2 mm × 2 mm in footprint, which is critical for wearables, mobile phones, and USB-OTG supplies where PCB area is at a premium. The exposed pad provides a low thermal-resistance path to dissipate up to ~1 W continuously. The quasi-constant on-time valley current-mode control loop provides fast transient response and excellent load regulation while minimizing output ripple. The high-side P-FET synchronous switch eliminates the rectifier forward drop, pushing peak efficiency beyond 90% at moderate loads. The internal compensation is designed to work with a 1 µH nominal inductor and 10 µF input/output capacitors. Typical applications include USB-OTG supplies from a Li-Ion cell, 5 V bias for GPS modules, RFID readers, audio codec pre-amps in portable media players, low-power MCU cores in IoT sensor nodes, and white-LED drive rails. The wide input range (2.3 V to 5.5 V) covers all common single-cell battery chemistries including deeply discharged Li-Ion (2.5 V) and fresh alkaline (3 × 1.5 V = 4.5 V). When designing with the TPS61240DRVR, choose a 1 µH shielded inductor with low DCR to preserve efficiency. Place the input capacitor within 2 mm of the VIN and PGND pins, and route the output capacitor return directly to the exposed pad to minimize switching noise coupling into sensitive analog circuits downstream. This page synthesizes distributor pricing, drop-in WSON-6 alternatives, and practical layout notes not collected on the manufacturer datasheet alone, giving procurement and design engineers a single reference for cross-functional review.
TPS61240DRVT - 5V 450mA Boost Converter | Texas Instruments
The Texas Instruments TPS61240DRVT is a 2.3V to 5.5V input, 5V fixed-output, 450mA synchronous step-up (boost) DC-DC converter in a 6-pin WSON (DRV) package with exposed thermal pad. It switches at a fixed 3.5 MHz and is optimized for products powered by three-cell alkaline/NiCd/NiMH or single-cell Li-Ion/Li-Polymer batteries. A boost converter (step-up converter) is a switching power supply topology that produces an output voltage higher than its input. It is part of the DC-DC converter family under switched-mode power supplies (SMPS) within power management ICs. Boost converters use an inductor, switch, diode (or synchronous rectifier), and output capacitor to store and release energy, achieving efficiencies far above what linear regulators can deliver when VIN is well below VOUT. Key features of the TPS61240DRVT include 90% typical efficiency at nominal operating conditions, 5.0V ±2% total DC output voltage accuracy, 30 µA quiescent current, and best-in-class line and load transient response. The wide input range of 2.3V to 5.5V is ideal for batteries with extended voltage ranges, and the high 3.5 MHz switching frequency enables the use of small inductors and ceramic capacitors in space-constrained portable designs. The TPS61240DRVT uses a synchronous rectification topology with an internal input valley current limit of 500 mA. Its control architecture minimizes quiescent current while delivering strong transient response, allowing the device to extend battery life across light-load and full-load operating conditions. The exposed thermal pad on the WSON-6 package provides a low thermal resistance path. Typical applications include USB OTG/peripheral power supplies, single-cell Li-Ion to 5V boost converters, three-cell alkaline-powered portable electronics, MCU/digital logic supply rails, and handheld consumer devices. Its fixed 5V output simplifies USB-powered designs by eliminating the need for external feedback resistors. When designing with this device, ensure the input valley current limit is not exceeded under maximum load conditions and follow TI's recommended inductor and capacitor values for stable operation. A bypass capacitor close to the IC input is required for noise-sensitive analog rails sharing the boost converter. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
TPS61251DSGR - 3.5MHz Boost Converter for Battery Backup | Texas Instruments
The Texas Instruments TPS61251DSGR is a 3.5-MHz, 1.5-A, 92%-efficient boost converter designed for battery backup charging applications with adjustable constant current limit and an integrated snooze mode. Housed in an 8-pin WSON (DSG) package measuring 2x2 mm, the device delivers ±10% input current accuracy and supports charging super-capacitors in the Farad range to provide hold-up time during main-battery loss. A boost converter is a type of switched-mode DC-DC converter whose output voltage is higher than its input voltage. In the broader power-management taxonomy, a boost (or step-up) converter sits beside buck, boost-buck, and SEPIC topologies; all belong to the voltage-regulator IC family, which is itself a sub-category of power-management ICs (PMICs). Boost converters are commonly used in portable products where a single-cell Li-Ion, Li-polymer, or 3-cell NiMH source must be boosted to 3.3V, 3.45V, 5V, or higher rails for downstream loads. The TPS61251DSGR accepts inputs from 2.3V to 6V and produces an adjustable output of up to 6.5V typical, with the input-current limit programmable via a single external resistor. Operating at a fixed 3.5-MHz switching frequency, the device supports small 1-uH inductors, reducing total solution area. Efficiency peaks at 92% under typical loads; the integrated snooze mode drops quiescent current when the backup source is fully charged, preserving stored energy. Protection features include adjustable input-current limit, thermal shutdown, and over-voltage protection. The architecture pairs a current-mode PWM controller with a low-RDS(on) synchronous power stage and a precision current-sense amplifier for the adjustable constant-current limit. The high switching frequency pushes the ripple noise above the audio band, simplifying filtering. Programmable soft-start and the snooze-mode pin allow designers to tune startup behavior and standby losses for ultra-low-power sleep states. Typical applications include backup power for solid-state drives (SSD), hold-up supplies in industrial meters and e-meters, portable medical devices, wireless IoT sensor nodes, and SSD caching modules. The wide input range suits USB-on-the-go (OTG) boost requirements as well. For designers evaluating alternatives, the TPS61251DSGR occupies the same 2x2 mm footprint as TI's other DSG-package parts, allowing PCB reuse across similar backup or general-purpose boost rails. When designing with this part, choose an input capacitor rated for the worst-case RMS ripple and a 1-uH shielded inductor with low DC resistance to preserve efficiency at 1.5 A. The ILIM resistor sets the constant-current regulation point for capacitor charging - verify this value matches the backup-capacitor manufacturer's recommended charge profile to avoid premature aging. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
TPS61288RQQR - 18V 15A Synchronous Boost Converter | Texas Instruments
The Texas Instruments TPS61288RQQR is a fully integrated, synchronous boost converter housed in an 11-pin PowerVQFN (RQQ) package, delivering up to 15 A peak switch current from a 2.0 V to 18 V input rail while producing an adjustable output of 4.5 V to 18 V. Its 6.5 mΩ low-side and 8.5 mΩ high-side MOSFETs achieve high efficiency and small size in portable systems. The 500 kHz switching frequency enables a compact LC filter and supports single-cell or two-cell Li-ion battery sources. According to the Texas Instruments product page, the TPS61288 combines high power density with wide Vin/Vout range, making it suitable for USB Power Delivery (PD), fast-charging adapters, and industrial point-of-load applications. A boost (step-up) converter is a switched-mode DC-DC converter that produces an output voltage higher than its input. Boost converters sit within the voltage regulator family (DC-DC converter -> switching regulator -> power management IC) and are favored over LDOs when the input-to-output step-up ratio would otherwise dissipate too much power as heat. Compared with a discrete boost implementation that needs external MOSFETs, an inductor, and a rectifier, the TPS61288 integrates the synchronous FETs and protection logic, simplifying PCB layout and reducing BOM count. Key features include a 2.0 V minimum continuous operating input (2.4 V minimum start-up), 4.5 V to 18 V programmable output, 500 kHz PWM switching, internal soft-start, cycle-by-cycle current limit, and thermal shutdown. The synchronous architecture eliminates the external Schottky diode, boosting efficiency to over 95 percent in typical USB-PD boost configurations. Technically, the TPS61288 uses a peak-current-mode control architecture with internal compensation, which simplifies external compensation components and provides excellent line and load transient response. The high-side and low-side MOSFETs are co-packaged to minimize parasitic inductance and switching losses at the 500 kHz operating point. Typical applications include USB-PD source voltage boost, two-cell battery fast charging, industrial 12 V to 18 V boost rails, e-cigarette and personal vaporizer modules, and any battery-powered system requiring high step-up conversion from a sub-3 V source to a 12 V or higher load rail. The wide Vin/Vout range covers both single-cell and two-cell Li-ion battery stacks. When designing with this device, follow TI's recommended inductor selection (typically 1.0 µH to 2.2 µH, 15 A saturation) and ensure the input/output ceramic capacitors meet the ESR and voltage derating guidelines shown in the manufacturer datasheet. Pay attention to PCB layout: the PowerVQFN package requires adequate copper thermal relief under the exposed pad to keep junction temperature below the 125 °C limit. This page synthesizes distributor pricing, drop-in same-package alternatives, and PCB thermal design notes not found in the manufacturer datasheet alone.
TPS613222ADBVT - 1.8A 5V Boost Converter, 6uA IQ | TI
The Texas Instruments TPS613222ADBVT is a synchronous boost converter with a fixed 5V output, delivering up to 2.5A switch current (1.8A continuous) from inputs as low as 0.9V, packaged in a 5-pin SOT-23 (DBV). Drawing only 6.5 microamps of quiescent current, the TPS613222ADBVT extends battery life in portable systems powered by alkaline, NiMH, or single-cell Li-ion sources where the rail must stay alive in standby. A boost (step-up) DC-DC switching regulator is a converter that produces an output voltage higher than its input. When the input equals or exceeds the target output, the regulator idles and the output tracks the input minus the rectifier drop, making the part well-suited to single-cell-to-USB or single-cell-to-5V applications. Synchronous rectification eliminates the external Schottky diode, shrinking the BOM and improving efficiency at light load. Within the broader hierarchy, this part belongs to switching regulators -> DC-DC converters -> power management ICs. Three specifications define the TPS613222ADBVT's fit for portable battery-powered designs: 6.5 uA quiescent current extends standby, 0.9V to 5.5V input supports single-cell alkaline or NiMH operation, and 1.8A switch current (2.5A peak) supplies 5V rails up to several hundred milliamps without external FETs. The pass-through (down) mode automatically bypasses the boost when VIN exceeds VOUT, eliminating unnecessary switching losses. The TPS61322xx family uses a peak-current-mode control topology with internal compensation, a 1.2 MHz typical switching frequency that allows small inductors, and True Load Disconnect to prevent reverse leakage when VIN approaches VOUT. Internal soft-start limits inrush to protect the battery source during turn-on. Typical applications include USB charging-port power from a single-cell battery, IoT sensor nodes, wearables, single-cell Li-ion or alkaline-powered toys, and any portable 5V rail that must stay efficient over the entire battery discharge curve. Designers should choose the TPS613222ADBVR tape-and-reel sibling for high-volume assembly or the TPS613221A variants for different output voltages (3.3V, 3.6V) within the same pinout. The SOT-23-5 footprint is shared with many 1.5A-2A boost converters from competing vendors, simplifying second-source qualification.
TPS61378QWRTERQ1 - 18.5V, 4.8A Sync Boost Converter | TI
The Texas Instruments TPS61378QWRTERQ1 is an AEC-Q100-qualified, fully-integrated synchronous boost converter with integrated load-disconnect, delivering up to 18.5V output from a 2.3V to 14V input rail with a programmable switching current limit of 1A to 4.8A, housed in a 16-pin WQFN (RTE) package with wettable flank and exposed thermal pad. It consumes only 25uA quiescent current from VIN and employs peak current-mode control with a programmable switching frequency. A boost (step-up) converter is a switched-mode DC-DC converter that produces an output voltage higher than its input voltage by storing energy in an inductor during one clock phase and releasing it into the output capacitor during the complementary phase. Boost converters sit in the broader DC-DC converter hierarchy alongside buck, buck-boost, and SEPIC topologies, and they belong to the Power Management IC family that conditions battery or bus voltages for downstream analog, RF, and digital loads. Key features include integrated synchronous rectification (eliminating an external Schottky diode), an integrated P-MOSFET load-disconnect switch that prevents reverse current flow in shutdown, programmable peak current limit via external resistor, programmable switching frequency from 200kHz to 2.2MHz, internal soft-start, and thermal shutdown. The WQFN-16 RTE package provides a low thermal resistance path and the wettable flank enables automated optical inspection of solder joints. The architecture combines a high-side synchronous rectifier with a peak-current-mode controller and an internal low-side power MOSFET, achieving high efficiency (>90% at moderate loads) while minimizing external component count. The load-disconnect feature is essential for automotive start-stop and battery-isolated systems where reverse leakage into the source must be blocked during shutdown. Typical applications include automotive infotainment displays, USB Type-C power delivery boost rails, automotive camera modules, LED driver boost stages, and portable industrial equipment where a higher voltage rail must be generated from a 12V or 5V bus. The AEC-Q100 Grade 1 qualification (operating from -40C to +125C) makes the part specifically suited to harsh automotive environments. When designing with this device, select the inductor based on the programmed switching frequency and current limit (typical 1.0uH to 4.7uH) and ensure the output ceramic capacitor meets the manufacturer's minimum ESR requirement for stable loop compensation. Pay attention to PCB layout: the input capacitor return, output capacitor return, and PGND pin should all connect to a single low-impedance ground pour directly under the exposed pad to minimize switching noise and thermal rise. This page synthesizes distributor pricing, AEC-Q100 grade drop-in alternatives, and practical layout guidance not found in the bare manufacturer datasheet.
TPS62090 - 3A, 6V Synchronous Step-Down Converter | TI
The Texas Instruments TPS62090 is a high-frequency synchronous step-down (buck) converter optimized for small solution size and high efficiency in battery-powered applications. It operates from an input voltage range of 2.5 V to 6 V and delivers up to 3 A of continuous output current. The output voltage is adjustable from 0.8 V to VIN using external resistors, with a typical configuration of 1.8 V. The device is available in a 16-pin VQFN (RGT) package with an exposed thermal pad, enabling compact PCB layouts. A synchronous step-down converter is a type of DC-DC switching regulator that steps down a higher input voltage to a lower output voltage with high efficiency. Unlike linear regulators, which dissipate excess power as heat, switching converters use high-frequency switching and energy storage elements (inductors and capacitors) to transfer energy with minimal loss. The TPS62090 belongs to the TPS6209x family of synchronous buck converters within the broader power management IC category used in portable, industrial, and automotive power rails. Key features include the proprietary DCS-Control topology, which combines voltage-mode and current-mode control to deliver excellent load transient response and accurate output regulation. The converter achieves up to 97% efficiency and operates at a nominal 2.8 MHz switching frequency (1.4 MHz in some modes), allowing small inductors. Power Save Mode reduces quiescent current to approximately 20 uA at light loads, and 100% duty cycle support enables the lowest dropout operation. Technically, the DCS-Control architecture enables seamless PWM-to-PFM transition, maintaining high efficiency across the full load range. Soft-start, enable, and power-good pins allow flexible power sequencing and voltage tracking configurations. Only a small inductor and ceramic capacitors are required; the 3x3 mm VQFN-16 package suits space-constrained designs. Typical applications include point-of-load (POL) supplies for processors, FPGAs, and DSPs; power rails for smartphones, tablets, and other portable battery-powered devices; and industrial systems requiring high efficiency in a small footprint. When designing with the TPS62090, observe the minimum output capacitance required by the DCS-Control topology for stability, minimize parasitic inductance in the power loop, and provide adequate copper area under the exposed pad for thermal dissipation.
TPS62125DSGT - 3V-17V, 300mA Buck Converter | Texas Instruments
The Texas Instruments TPS62125DSGT is a 3V to 17V input, 300 mA output synchronous step-down (buck) DC/DC converter in an 8-pin WSON package with exposed thermal pad. The device integrates both high-side and low-side MOSFETs and supports an adjustable output voltage from 1.2V to 10V with typical efficiency above 90% across most of the load range. What is a buck converter? A buck converter (step-down switching regulator) is a type of switched-mode power supply (SMPS) topology that efficiently reduces a higher DC input voltage to a lower DC output voltage. It belongs to the voltage regulator family within power management ICs, distinct from linear regulators (LDOs) which dissipate excess voltage as heat. Because buck converters use PWM switching with an inductor and output capacitor, they achieve much higher efficiency (typically 85-95%) than LDOs across large input-to-output voltage differentials, making them the preferred topology for battery-powered and energy-constrained systems. Key differentiating features of the TPS62125DSGT include an integrated input supply voltage supervisor (SVS) with adjustable threshold and hysteresis consuming typically 6 microamps of quiescent current, 100% duty-cycle mode for low-dropout operation near battery end-of-life, a power-good open-drain output for sequencing, and an output discharge function that prevents residual voltage on the rail when disabled. The 2 mm x 2 mm WSON-8 footprint makes the device suitable for space-constrained designs. Technically, the TPS62125 uses peak-current-mode control with internal compensation, simplifying external component selection and eliminating the need for compensation network tuning. The wide 3V to 17V input range supports operation from 4-cell alkaline or 1- to 4-cell Li-Ion battery stacks as well as 9V to 15V bus-powered systems, enabling one regulator platform to cover multiple end products. Typical applications include battery-powered IoT endpoints, wearable health monitors, portable industrial sensors, low-power wireless sensor nodes, USB-powered peripherals, and standby rails in always-on systems. Designers select the TPS62125 specifically when an adjustable input-voltage supervisor and ultra-low 6-microamp quiescent current are required to maximize battery life in duty-cycled loads. When designing with this device, choose the inductor based on the manufacturer's WEBENCH tool or the datasheet inductor-selection tables; an LC filter combination of 2.2 microhenries and 10 microfarads is a typical starting point for most 3.3V and 5V output designs. Verify that the chosen input and output ceramic capacitors have adequate DC-bias derating at the actual operating voltage. This page synthesizes distributor pricing, pin-compatible drop-in alternatives, and practical design considerations drawn from the manufacturer datasheet and reference designs, providing information not consolidated on a single distributor product page.
TPS62130ARGTT - 3-17V 3A Step-Down Converter | Texas Instruments
The Texas Instruments TPS62130ARGTT is a 3 V to 17 V, 3 A synchronous step-down DC-DC converter with DCS-Control topology, housed in a 16-pin VQFN (RGT) 3 mm x 3 mm package. It delivers adjustable output from 0.9 V to 6 V, supports up to 3 A continuous load, and operates at a typical switching frequency of 2.5 MHz that enables the use of small inductors. DCS-Control combines hysteresis and voltage-mode control to provide fast transient response and high output voltage accuracy in a small footprint. A DC-DC buck converter is a switch-mode voltage regulator that steps a higher DC input voltage down to a lower DC output voltage by rapidly switching an inductor/capacitor network. It belongs to the broader family of voltage regulators (linear regulators, switching regulators) inside power management ICs for semiconductors. Switching regulators like the TPS62130 family are preferred over LDOs when high efficiency, wide input range, or high load current make linear regulation impractical due to power dissipation. Key features include 3 V to 17 V input voltage range, up to 3 A output current, adjustable output from 0.9 V to 6 V, pin-selectable nominal / +5% output voltage, programmable soft-start and tracking, power-good output, output discharge, and 17 uA quiescent current. The 2.5 MHz typical switching frequency permits use of chip inductors under 1 uH, enabling designs smaller than 25 mm² total solution area. The VQFN-16 (RGT) package provides a thermal resistance of approximately 38 C/W on a 4-layer JEDEC standard test board. The TPS62130A uses TI's DCS-Control topology, which combines the fast transient response of hysteresis control with the DC accuracy of a voltage-mode loop. This gives the converter stable operation with ceramic output capacitors and pseudo-fixed-frequency switching under continuous load, while still entering power-saving mode at light load for high efficiency across the full load range. Typical applications include 12 V distributed bus POL converters for industrial PCs, USB Type-C / PD powered device rails, portable equipment battery-powered systems, FPGA/CPLD core and I/O supplies, and compact solid-state drives. A 12 V to 3.3 V conversion at 2 A is a common use case for this part. When designing with this device, choose a low-DCR power inductor with saturation current at least 30% above the maximum DC load; insufficient headroom causes output ripple and possible sub-harmonic instability in DCS-Control. Place input ceramic capacitors as close as possible to PVIN and PGND to minimize switching noise on the input rail. This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and practical PCB design notes not found in the manufacturer datasheet, sourced from cross-reference databases and the TI product family.
TPS62130RGTR - 3A 3-17V Buck Converter 2.5MHz | Texas Instruments
The Texas Instruments TPS62130RGTR is a synchronous step-down (buck) DC-DC converter delivering up to 3A output current from a 3V to 17V input supply in a compact 16-pin VQFN (3x3 mm) package with exposed thermal pad, ideal for space-constrained point-of-load power management. A buck converter, or step-down converter, is a switching voltage regulator that efficiently reduces a higher input voltage to a lower regulated output. It is a fundamental power management IC building block, converting energy from 12V rails, batteries, or unregulated sources into the low-voltage rails required by processors, FPGAs, and sensors. Key features include an adjustable output from 0.9V to 6V, a 2.5MHz switching frequency, and approximately 17uA quiescent current in power-save mode. Integrated synchronous rectification eliminates the external Schottky diode and improves efficiency. The device provides an enable pin, open-drain power-good output, and soft-start/tracking pin for controlled startup and power sequencing. Technically, the TPS62130 uses DCS-Control (Direct Control with Seamless transition into Power Save Mode) topology, combining voltage-mode and current-mode control for excellent load and line regulation with seamless PWM/power-save transitions across the load range. The 2.5MHz switching frequency permits small inductors and capacitors, shrinking the total solution footprint. Overcurrent and overtemperature protection ensure robust operation. Typical applications include standard 12V rail POL supplies, converters from single or multiple Li-ion battery stacks, solid-state drives, embedded systems, and LDO replacements where efficiency matters. High efficiency across light and heavy loads suits battery-powered portable devices, industrial control, and networking equipment. Design tip: place input and output capacitors close to the pins to minimize parasitic inductance, solder the exposed pad to a thermal relief pattern, and use the SS/TR pin to set the output ramp or implement voltage tracking.
TPS62134D - 3.2A 17V Step-Down Converter | Texas Instruments
The Texas Instruments TPS62134D is a 17-V input synchronous step-down DC-DC converter delivering up to 3.2A of output current from a 3x3 mm 16-pin VQFN package with exposed thermal pad. The output voltage is adjustable down to 0.7V, and the device includes a low-power mode input designed specifically for Intel Skylake platform applications such as Ultrabooks and notebooks. A buck (step-down) switching regulator is a type of DC-DC converter that converts a higher input voltage to a lower regulated output using a high-side and low-side power MOSFET switch, an inductor, and capacitors. Within the power management hierarchy, the TPS62134 belongs to the switching voltage regulator family, sitting between point-of-load converters and full PMIC solutions. Its D-CAP-style synchronous architecture eliminates external bootstrap concerns for the low-side FET and improves efficiency at light load. Key features include the wide 17V maximum input supporting multi-cell and adapter rails, 3.2A continuous output current, a low-power mode input pin that lets the system MCU force efficiency-optimized light-load operation, and output voltage adjustability from 0.7V with a single external resistor divider. The 3x3 mm VQFN-16 (RGT) footprint keeps solution height low for ultraportable designs, and internal compensation simplifies design-in. Technically, the TPS62134 uses a synchronous rectification topology that reduces conduction losses compared to asynchronous (external-diode) bucks, and its control loop supports fast transient response for CPU core rails. The Intel Skylake compatibility makes it a natural fit for notebook VCCSA/VCCCORE auxiliary rails where dynamic load steps are frequent. Typical applications include Ultrabook and notebook point-of-load supplies, tablet and convertible power trees, SSD and storage-card supplies, and general 5V/12V-rail point-of-load conversion up to 3.2A. Design consideration: keep the input loop (input capacitor, VIN pins, PGND) as tight as possible; at 3.2A, switch-node ringing drives EMI, and a well-placed 22uF input ceramic plus short PGND return is essential per the TPS62134x datasheet (Rev. E) layout guidelines.
TPS62150A-Q1 - 3-17V 1A Automotive Step-Down Converter | TI
The TPS62150A-Q1 is an automotive-grade synchronous step-down DC-DC converter from Texas Instruments, designed for high power density applications. It operates from an input voltage range of 3 V to 17 V and delivers up to 1 A of output current with an adjustable output voltage from 0.9 V to 6 V. The device is available in a 3 mm × 3 mm QFN package (16-pin VQFN), making it suitable for space-constrained automotive and industrial designs. A step-down converter, also known as a buck converter, is a type of DC-DC converter that efficiently reduces a higher input voltage to a lower output voltage. It is a fundamental building block in power management systems, converting raw battery or bus voltages to the precise levels required by microcontrollers, sensors, and other loads. The TPS62150A-Q1 belongs to the family of synchronous buck converters, which use both high-side and low-side switches to achieve high efficiency, especially at moderate to high load currents. Key features of the TPS62150A-Q1 include the DCS-Control™ topology, which provides fast transient response and high output voltage accuracy. The device supports a typical switching frequency of 2.5 MHz, allowing the use of small inductors and capacitors, reducing solution size. It also features a quiescent current of 17 µA (typ.), enabling high efficiency at light loads. The output voltage can be set via external resistors or selected via a pin for nominal or +5% output, and the device includes programmable soft start and tracking for controlled power-up sequencing. Technically, the TPS62150A-Q1 integrates both power MOSFETs, eliminating the need for external Schottky diodes. The DCS-Control topology combines voltage mode and current mode control, providing stable operation with ceramic output capacitors. The device also includes power-save mode for seamless transition between PWM and PFM operation, maintaining high efficiency across the load range. The automotive qualification (AEC-Q100) ensures reliable operation over the -40°C to 125°C temperature range, making it suitable for harsh environments. Typical applications include automotive infotainment systems, advanced driver-assistance systems (ADAS), and industrial power supplies. The wide input range and high switching frequency make it ideal for powering processors, FPGAs, and sensors in these systems. The small package and high efficiency help meet stringent thermal and space requirements. When designing with the TPS62150A-Q1, ensure proper input and output capacitor selection to maintain stability and low output ripple. The device is designed to work with ceramic capacitors, but the value and ESR must be within the recommended range. Also, consider the thermal performance of the QFN package and provide adequate copper area for heat dissipation.
TPS62160DGKT - 3-17V 1A Step-Down Converter | Texas Instruments
The Texas Instruments TPS62160DGKT is a 3 V to 17 V, 1 A synchronous step-down (buck) DC/DC converter based on DCS-Control topology, housed in an 8-pin VSSOP (DGK) PowerPAD package with 3.00 mm x 3.00 mm footprint. The device supports an adjustable output voltage from 0.9 V to 6 V, with fixed-voltage variants also available in the family. It features a typical quiescent current of 17 uA and a switching frequency of typically 2.25 MHz, allowing the use of small inductors and low-cost ceramic input/output capacitors. A buck converter is a switched-mode power supply topology that steps a higher DC input voltage down to a lower DC output voltage by chopping the input with a switch and smoothing the resulting pulsed waveform through an LC filter. Within the broader power-management IC hierarchy, the buck converter sits under DC/DC switching regulators, voltage regulators, and ultimately power-management ICs; it is preferred over linear (LDO) regulators whenever the input-to-output voltage differential is large because switching conversion wastes far less power as heat. The TPS62160 belongs to TI's TPS6216x family, optimized for high power density and small solution size. Key features include DCS-Control (Direct Control with Seamless transition into power-save mode) topology for high efficiency across light and full load, up to 1 A continuous output current, output discharge and power-good indication, an enable pin for power sequencing, and pin-to-pin compatibility with the TPS62170 (higher current) and TPS62125 (different feature set) families. The device operates over a junction temperature range of -40 C to +125 C and offers over-temperature and over-current protection. The 8-pin VSSOP PowerPAD package provides a low thermal resistance path, enabling up to 1 A continuous load without external heat sinking. Typical applications include standard 12 V rail supplies (such as those found in industrial PCs, factory automation, and embedded computing), point-of-load (POL) supplies from single or multiple Li-ion battery stacks in portable equipment, and as a high-efficiency replacement for LDOs when the input-to-output voltage drop would otherwise dissipate excessive power. The small solution size makes the part attractive for space-constrained designs such as solid-state drives, portable instruments, and USB-powered peripherals. When designing with this device, choose an inductor with low DCR rated for the peak inductor current; verify output ripple with the selected output capacitor's ESR and capacitance value. Place the input capacitor as close as possible to the VIN and PGND pins to minimize switching-node ringing and EMI. Do not exceed the absolute maximum VIN of 17 V and keep the SW trace short and narrow to limit parasitic capacitance. This page synthesizes distributor pricing, drop-in same-package alternatives, and design notes not found in the manufacturer datasheet. Engineers can compare alternatives with confidence because every replacement shares the same VSSOP-8 footprint and within 30 percent of key parameters.
TPS62172QDSGRQ1 - 3-17V 0.5A AEC-Q100 Buck Converter | TI
The Texas Instruments TPS62172QDSGRQ1 is an AEC-Q100 qualified synchronous step-down (buck) DC-DC converter delivering a fixed 3.3 V output at up to 500 mA from a 3 V to 17 V input rail, housed in an 8-pin WSON exposed-pad (DSG) 2 mm x 2 mm package. It integrates the high-side and low-side MOSFETs and operates at a typical 2.25 MHz switching frequency using TI's DCS-Control topology, which combines hysteretic and PWM control for fast transient response and tight DC accuracy. A buck (step-down) DC-DC converter is a switched-mode power supply that converts a higher DC input voltage to a lower DC output voltage by alternately storing energy in an inductor and releasing it to the load through a filter capacitor. Compared with linear regulators, bucks achieve much higher efficiency at large input-to-output voltage differentials because they do not dissipate the VIN-VOUT drop as heat. Bucks sit within the broader power-management hierarchy: DC-DC converter -> switched-mode power supply -> power management IC -> semiconductor. The TPS6217x-Q1 family specifically targets high power-density automotive subsystems where small inductors, low quiescent current, and predictable EMI behaviour are essential. Key specifications include a typical 2.25 MHz switching frequency (allowing 1.0 uH to 2.2 uH chip inductors), 17 uA quiescent current, 2% output voltage accuracy, and a power-good output that signals when VOUT has reached regulation. The DCS-Control topology provides a smooth transition from PWM to light-load power-save mode, preserving efficiency at microampere loads. Internal soft-start limits inrush current, and the device supports 100% duty-cycle operation for low-dropout behaviour near 3 V input. The internal architecture uses adaptive on-time control with a virtual current sense, eliminating the need for an external current-sense resistor and minimising PCB area. The exposed thermal pad (EP) on the WSON-8 package provides a low thermal resistance path to the PCB ground plane, allowing the 500 mA continuous load at up to 17 V VIN without external heatsinking for typical automotive ambient temperatures. The 2.25 MHz switching frequency falls above the AM band and well above CISPR 25 automotive EMI bands, simplifying compliance. Typical applications include automotive infotainment head units, ADAS sensor modules (camera, radar), body-electronics clusters, always-on telematics units, and industrial 12 V point-of-load rails that must survive load-dump transients. The wide 3 V to 17 V VIN range tolerates cranking dips and 12 V battery transients directly. When designing with the TPS62172QDSGRQ1, choose a 1.0 uH to 2.2 uH shielded inductor rated for at least 0.7 A saturation, place input capacitors as close to the VIN and GND pads as possible, and connect the EP to a ground-copper pour of at least 100 mm squared for proper thermal relief. This page synthesizes manufacturer datasheet parameters, distributor pricing tiers, drop-in compatible same-package alternatives, and design notes not consolidated on the manufacturer product page - useful for engineers evaluating AEC-Q100 0.5 A rails and validating pin-to-pin second-source options.
TPS62177DQCT - 28V, 0.5A Buck Converter with SNOOZE | TI
The Texas Instruments TPS62177DQCT is a 28V, 500mA synchronous step-down DC/DC converter based on TI's DCS-Control topology, with a fixed 3.3V output, housed in a 10-pin WSON (DQC) exposed-pad package. It operates from a 4.75V to 28V input range and delivers up to 500mA of continuous output current at 3.3V, making it ideal for multi-cell Li-Ion, 12V, and industrial 24V intermediate bus rails. Key features include a 4.8 uA quiescent current in SNOOZE (sleep) mode, 100% duty-cycle operation for low-dropout regulation, an active output-discharge resistor, a power-good indicator, and a switching frequency of typically 1MHz that allows the use of small inductors and ceramic capacitors. The exposed thermal pad of the WSON-10 package enables sustained 500mA delivery with minimal PCB copper area. The TPS6217x family uses TI's DCS-Control (Direct Control with Seamless transition into Power Save Mode) topology, which combines PWM at moderate-to-heavy loads with automatic power-save mode at light loads to keep efficiency high across the entire load curve. The result is high efficiency at 500mA and very low quiescent current at micro-amp standby levels, which matters for battery-powered industrial sensors and always-on IoT nodes. Typical applications include multi-cell Li-Ion powered portable and industrial equipment, 12V/24V bus regulation for factory automation and metering, low-power wireless sensor nodes, USB-powered and battery-backed systems, and any point-of-load supply that needs a clean 3.3V rail from a wide input. When designing with this part, place input capacitors close to PVIN and PGND, use a 1uH to 2.2uH shielded inductor at the SW node, and connect the exposed pad to a continuous ground plane for thermal relief. The PG (power-good) pin can be left open if sequencing is not required.