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LM2738YSD

Public Made by Adom

by adom

Texas Instruments DC-DC Converters, WSON-8-EP(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
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LM2738YSD

Texas Instruments · DC-DC Converters · WSON-8-EP(3x3)

LM2738YSD from Texas Instruments, in a WSON-8-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 BOOST input Boost voltage that drives the internal NMOS control switch, with a bootstrap capacitor connected between BOOST and SW; Boost-to-SW voltage is recommended at 2.5 V to 5.5 V.
2 VIN power_in Supply voltage for the output power stage; connect a bypass capacitor to this pin and tie pins 2 and 3 together at the package; recommended VIN/VCC range is 3 V to 20 V.
3 VCC power_in Input supply voltage of the device; connect a bypass capacitor to this pin and tie pins 2 and 3 together at the package.
4 EN input Enable control input where logic high enables operation; do not allow this pin to float or be greater than VIN + 0.3 V.
5 GND power_in Signal and power ground; place the bottom resistor of the feedback network as close as possible to this pin.
6 FB input Feedback pin that connects to the external resistor divider to set the output voltage, with an absolute maximum FB voltage of -0.5 V to 3 V.
7 GND power_in Signal and power ground; place the bottom resistor of the feedback network as close as possible to this pin.
8 SW output Output switch that connects to the inductor, catch diode, and bootstrap capacitor; recommended SW voltage range is -0.5 V to 20 V.
9 EP passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package WSON-8-EP(3x3)
Category Power Supply Chip
Pins 9

CAD (KiCad official)

  • Symbol: LM2738YSD
  • Footprint: Package_SON:WSON-8-1EP_3x3mm_P0.5mm_EP1.6x2.0mm
  • 3D model: WSON-8-EP(3x3) (KiCad packages3D, STEP)
  • 3D model files: lm2738ysd-etched.step / lm2738ysd-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm2738ysd.step / lm2738ysd.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (44 pp, sha256 2b1805b4c3e0d675, retrieved 2026-10-08, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (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