component
TPS51275BRUKR
Public Made by Adomby adom
Texas Instruments DC-DC Converters, WQFN-20-EP(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownTPS51275BRUKR
Texas Instruments · DC-DC Converters · WQFN-20-EP(3x3)
TPS51275BRUKR from Texas Instruments, in a WQFN-20-EP(3x3). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | CS1 | output | Sets the channel 1 overcurrent (OCL) trip level; CS1 sources about 10 µA, and the CS1 voltage must be set between 0.2 V and 2 V over all operating temperatures through a resistor to GND. |
| 2 | VFB1 | input | Channel 1 voltage feedback input for the output regulation and OVP/UVP monitoring. |
| 3 | VREG3 | power_out | 3.3-V LDO output (100 mA) that supplies the analog circuitry; place a ceramic capacitor of 1 µF or larger (X5R or better) close to the pin. |
| 4 | VFB2 | input | Channel 2 voltage feedback input for the output regulation and OVP/UVP monitoring. |
| 5 | CS2 | output | Sets the channel 2 overcurrent (OCL) trip level; CS2 sources about 10 µA, and the CS2 voltage must be kept between 0.2 V and 2 V over all operating temperatures through a resistor to GND. |
| 6 | EN2 | input | Channel 2 enable input; the SMPS turns on above 1.6 V and off below 0.3 V. |
| 7 | PGOOD | output | Combined power-good open-drain output flag that must be pulled up to an external rail through a resistor. |
| 8 | SW2 | output | Channel 2 switch-node connection, which must be tied to the drain of the low-side MOSFET because it is used for inductor current sensing. |
| 9 | VBST2 | input | Bootstrap supply input for the channel 2 high-side MOSFET driver; connect a capacitor from this pin to SW2. |
| 10 | DRVH2 | output | Channel 2 high-side MOSFET gate driver output. |
| 11 | DRVL2 | output | Channel 2 low-side MOSFET gate driver output. |
| 12 | VIN | power_in | Power conversion input that must receive the same voltage as the drain of the high-side MOSFETs of both channels; the device operates from 5 V to 24 V. |
| 13 | VREG5 | power_out | 5-V LDO output (100 mA) that supplies the gate drivers; place a ceramic capacitor of 1 µF or larger (X5R or better) close to the pin. |
| 14 | VO1 | input | Channel 1 output voltage input that serves as the 5-V input for switch-over; the VREG5 switchover requires VO1 to be above VREG5 minus 1 V. |
| 15 | DRVL1 | output | Channel 1 low-side MOSFET gate driver output. |
| 16 | DRVH1 | output | Channel 1 high-side MOSFET gate driver output. |
| 17 | VBST1 | input | Bootstrap supply input for the channel 1 high-side MOSFET driver; connect a capacitor from this pin to SW1. |
| 18 | SW1 | output | Channel 1 switch-node connection, which must be tied to the drain of the low-side MOSFET because it is used for inductor current sensing. |
| 19 | VCLK | output | 260-kHz clock output for an external charge pump, available when EN1 is on and driven from VO1; leave open if unused. |
| 20 | EN1 | input | Channel 1 enable input; the SMPS turns on above 1.6 V and off below 0.3 V. |
| 21 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | WQFN-20-EP(3x3) |
| Category | Power Management (PMIC) |
| Pins | 21 |
CAD (KiCad official)
- Symbol:
TPS51275BRUKR - Footprint:
Package_DFN_QFN:UQFN-20-1EP_3x3mm_P0.4mm_EP1.85x1.85mm - 3D model: WQFN-20-EP(3x3) (KiCad packages3D, STEP)
- 3D model files:
tps51275brukr-etched.step/tps51275brukr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tps51275brukr.step/tps51275brukr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (32 pp, sha256
3995a003a7a617e9, retrieved 2026-10-08, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).