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TPS65268QRHBRQ1

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Texas Instruments DC-DC Converters, VQFN-32-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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TPS65268QRHBRQ1

Texas Instruments · DC-DC Converters · VQFN-32-EP(5x5)

TPS65268QRHBRQ1 from Texas Instruments, in a VQFN-32-EP(5x5). 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 EN3 input Enable for BUCK3; float to enable or use resistor divider to adjust UVLO input voltage.
2 AGND power_in Analog ground common to buck controllers and analog circuits; route separately from power grounds.
3 AGND power_in Analog ground common to buck controllers and analog circuits.
4 AGND power_in Analog ground common to buck controllers and analog circuits.
5 AGND power_in Analog ground common to buck controllers and analog circuits.
6 FB2 input Feedback Kelvin sensing pin for BUCK2 output voltage.
7 COMP2 output Error amplifier output and compensation pin for BUCK2 PWM loop.
8 SS2 output Soft-start and tracking input for BUCK2 with 5.2-µA pullup current source.
9 BST2 output Boot-strapped supply for BUCK2 high-side gate driver.
10 LX2 output Switching node connection to inductor and bootstrap capacitor for BUCK2.
11 PGND2 power_in Power ground connection for BUCK2.
12 PVIN2 power_in Input power supply for BUCK2.
13 PVIN3 power_in Input power supply for BUCK3.
14 PGND3 power_in Power ground connection for BUCK3.
15 LX3 output Switching node connection to inductor and bootstrap capacitor for BUCK3.
16 BST3 output Boot-strapped supply for BUCK3 high-side gate driver.
17 SS3 output Soft-start and tracking input for BUCK3 with 5.2-µA pullup current source.
18 COMP3 output Error amplifier output and compensation pin for BUCK3 PWM mode.
19 FB3 input Feedback Kelvin sensing pin for BUCK3 output voltage.
20 PGOOD output Output voltage supervision pin asserted high when all buck converters are in regulation.
21 ROSC output Clock frequency adjustment pin connected to external clock or ground resistor.
22 FB1 input Feedback Kelvin sensing pin for BUCK1 output voltage.
23 COMP1 output Error amplifier output and compensation pin for BUCK1 peak current PWM mode.
24 SS1 output Soft-start and tracking input for BUCK1 with 5.2-µA pullup current source.
25 BST1 output Boot-strapped supply for BUCK1 high-side gate driver.
26 LX1 output Switching node connection to inductor and bootstrap capacitor for BUCK1.
27 PGND1 power_in Power ground connection for BUCK1.
28 PVIN1 power_in Input power supply for BUCK1.
29 VIN power_in Buck controller power supply.
30 V7V output Internal LDO regulator output for gate driver and internal controller.
31 EN1 input Enable for BUCK1; float to enable or use resistor divider to adjust UVLO input voltage.
32 EN2 input Enable for BUCK2; float to enable or use resistor divider to adjust UVLO input voltage.
33 PAD passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package VQFN-32-EP(5x5)
Category Power Supply Chip
Pins 33

CAD (KiCad official)

  • Symbol: TPS65268QRHBRQ1
  • Footprint: Package_DFN_QFN:QFN-32-1EP_5x5mm_P0.5mm_EP3.3x3.3mm
  • 3D model: VQFN-32-EP(5x5) (KiCad packages3D, STEP)
  • 3D model files: tps65268qrhbrq1-etched.step / tps65268qrhbrq1-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tps65268qrhbrq1.step / tps65268qrhbrq1.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (44 pp, sha256 c76c84aa847507dc, retrieved 2026-10-05, 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