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TPS54394PWP

Texas Instruments · DC-DC Converters · HTSSOP-16-EP

TPS54394PWP from Texas Instruments, in a HTSSOP-16-EP. 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 VIN1 power_in Power input connecting to high-side NFET drains with input voltage 4.5V to 18V.
2 VBST1 power_in Bootstrap supply for high-side NFET gate driver with 0.1µF capacitor to SW1 and internal diode to VREG5.
3 SW1 bidirectional Switch node for high and low-side NFETs serving as current comparator input.
4 PGND1 power_in Ground return for low-side MOSFETs serving as current comparator input.
5 EN1 input Enable input; pull high to enable channel 1 with 2.0V high and 0.4V low thresholds.
6 PG1 tri_state Open-drain power-good output for channel 1; goes low when output voltage is out of regulation (84%-116% threshold).
7 VFB1 input Feedback input for channel 1 using resistor divider connected to output voltage.
8 GND power_in Signal ground for sensitive signal and feedback returns.
9 VREG5 power_out 5.5V regulated output requiring 1µF minimum ceramic bypass capacitor; active when ENx high.
10 VFB2 input Feedback input for channel 2 using resistor divider connected to output voltage.
11 PG2 tri_state Open-drain power-good output for channel 2; goes low when output voltage is out of regulation (84%-116% threshold).
12 EN2 input Enable input; pull high to enable channel 2 with 2.0V high and 0.4V low thresholds.
13 PGND2 power_in Ground return for low-side MOSFETs serving as current comparator input.
14 SW2 bidirectional Switch node for high and low-side NFETs serving as current comparator input.
15 VBST2 power_in Bootstrap supply for high-side NFET gate driver with 0.1µF capacitor to SW2 and internal diode to VREG5.
16 VIN2 power_in Supply input for 5.5V linear regulator with input voltage 4.5V to 18V.
17 PowerPAD passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package HTSSOP-16-EP
Category Power Supply Chip
Pins 17

CAD (KiCad official)

  • Symbol: TPS54394PWP
  • Footprint: Package_SO:TSSOP-16-1EP_4.4x5mm_P0.65mm
  • 3D model: HTSSOP-16-EP (KiCad packages3D, STEP)
  • 3D model files: tps54394pwp-etched.step / tps54394pwp-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tps54394pwp.step / tps54394pwp.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (32 pp, sha256 d048a180d36720dd, 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