component

TPS51285ARUKR

Public Made by Adom

by adom

Texas Instruments DC-DC Converters, WQFN-20-EP(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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TPS51285ARUKR

Texas Instruments · DC-DC Converters · WQFN-20-EP(3x3)

TPS51285ARUKR 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 OCL trip level.
2 VFB1 input Voltage feedback input for channel 1.
3 VREG3 power_out 3.3-V LDO output.
4 VFB2 input Voltage feedback input for channel 2.
5 CS2 output Sets the channel 2 OCL trip level.
6 EN2 input Channel 2 enable.
7 PGOOD output Power good output flag, open-drain output, pull up to external rail via resistor.
8 SW2 output Switch-node connection for channel 2.
9 VBST2 power_in Supply input for high-side MOSFET bootstrap terminal, connect capacitor from this pin to SW2.
10 DRVH2 output High-side driver output for channel 2.
11 DRVL2 output Low-side driver output for channel 2.
12 VIN power_in Power conversion voltage input, apply the same voltage as drain voltage of high-side MOSFETs of channel 1 and channel 2.
13 VREG5 power_out 5-V LDO output.
14 VO1 input Output voltage input, 5-V input for switch-over.
15 DRVL1 output Low-side driver output for channel 1.
16 DRVH1 output High-side driver output for channel 1.
17 VBST1 power_in Supply input for high-side MOSFET bootstrap terminal, connect capacitor from this pin to SW1.
18 SW1 output Switch-node connection for channel 1.
19 VCLK output Clock output for charge pump.
20 EN1 input Channel 1 enable.
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: TPS51285ARUKR
  • 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: tps51285arukr-etched.step / tps51285arukr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tps51285arukr.step / tps51285arukr.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (31 pp, sha256 446980663889833c, retrieved 2026-10-03, 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, primary claude-haiku-4-5-20251001 (text), consensus claude-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).

Datasheet PDF