component

TPS51225BRUKR

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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TPS51225BRUKR

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

TPS51225BRUKR 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 Current sensing output; sources 10 µA at 25°C for setting channel 1 OCL trip level via external resistor; voltage range 0.2-2 V.
2 VFB1 input Feedback input for channel 1 output voltage monitoring and regulation.
3 VREG3 power_out 3.3 V always-on LDO output; supplies analog circuitry up to 100 mA.
4 VFB2 input Feedback input for channel 2 output voltage monitoring and regulation.
5 CS2 output Current sensing output; sources 10 µA at 25°C for setting channel 2 OCL trip level via external resistor; voltage range 0.2-2 V.
6 EN2 input Enable input for channel 2; enables SMPS when > 1.6 V, disables when < 0.3 V.
7 PGOOD output Open-drain power good output flag; sources 6.5 mA maximum when asserted.
8 SW2 output Switch node for channel 2 buck converter; connects to drain of high-side MOSFET and source of low-side MOSFET.
9 VBST2 power_in Bootstrap supply input for channel 2 high-side gate driver; connect capacitor between VBST2 and SW2.
10 DRVH2 output High-side driver output for channel 2 upper MOSFET.
11 DRVL2 output Low-side driver output for channel 2 lower MOSFET.
12 VIN power_in Power conversion input voltage; operating range 5.5-24 V; UVLO threshold 4.58 V wake-up.
13 VREG5 power_out 5 V LDO output; supplies gate drivers up to 100 mA; switches to VO1 when VO1 > VREG5-1V.
14 VO1 input Feedback input for channel 1 5 V output; monitors voltage and controls VREG5 switchover and VCLK enable.
15 DRVL1 output Low-side driver output for channel 1 lower MOSFET.
16 DRVH1 output High-side driver output for channel 1 upper MOSFET.
17 VBST1 power_in Bootstrap supply input for channel 1 high-side gate driver; connect capacitor between VBST1 and SW1.
18 SW1 output Switch node for channel 1 buck converter; connects to drain of high-side MOSFET and source of low-side MOSFET.
19 VCLK output 260 kHz clock output for charge pump; available when EN1 is high and driven by VO1 voltage.
20 EN1 input Enable input for channel 1; enables SMPS when > 1.6 V, disables when < 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: TPS51225BRUKR
  • 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: tps51225brukr-etched.step / tps51225brukr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tps51225brukr.step / tps51225brukr.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (32 pp, sha256 90becab25ed7799b, 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