component
TPS51218DSCR
Public Made by Adomby adom
Texas Instruments DC-DC Converters, WSON-10-EP(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownTPS51218DSCR
Texas Instruments · DC-DC Converters · WSON-10-EP(3x3)
TPS51218DSCR from Texas Instruments, in a WSON-10-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 | PGOOD | output | Power-good open-drain output with internal comparator window at 92.5%-107.5% nominal output voltage, 1 mA sink capability at 0.5V, 1 ms turn-on delay and 2 μs turn-off delay. |
| 2 | TRIP | input | Over-current limit threshold setting input with 10 μA sourced current (4700 ppm/°C temperature coefficient), accepting 0.2 V to 3.0 V to establish OCL threshold voltage. |
| 3 | EN | input | Enable control input with 0.5 V disable threshold and 1.8 V enable threshold; pull low to disable device. |
| 4 | VFB | input | Feedback voltage input regulated to 0.7 V nominal within ±0.5-1.6% accuracy over -40°C to 85°C range, with input bias current 0.01-0.2 μA at 0.735 V. |
| 5 | RF | input | Frequency and mode selection input; connect resistor to ground for auto-skip or to PGOOD for forced CCM mode, with resistor values 39kΩ-470kΩ setting switching frequencies 290-430 kHz. |
| 6 | DRVL | output | Ground-referenced low-side gate driver output with 0.5-2.2 Ω output impedance and 30 ns maximum dead-time specification before DRVH turn-on. |
| 7 | V5IN | power_in | 5 V auxiliary supply input specified 4.5-6.5 V nominally, with typical supply current 320-500 μA under load and 1 μA in shutdown. |
| 8 | SW | bidirectional | Switching node for external high-side MOSFET drain connection, serving as gate drive return path, minimum on-time ramp reference source, and active output discharge path. |
| 9 | DRVH | output | High-side floating gate driver output with gate drive voltage determined by VBST-to-SW bootstrap capacitor voltage, 1.5-3 Ω source impedance, and 35 ns maximum dead-time before DRVL turn-on. |
| 10 | VBST | power_in | Bootstrap supply terminal for high-side gate driver requiring 10-100 μF external flying capacitor connection from VBST to SW pin, internally connected to V5IN through bootstrap MOSFET. |
| 11 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | WSON-10-EP(3x3) |
| Category | Power Management (PMIC) |
| Pins | 11 |
CAD (KiCad official)
- Symbol:
TPS51218DSCR - Footprint:
Package_SON:VSON-10-1EP_3x3mm_P0.5mm_EP1.2x2mm - 3D model: WSON-10-EP(3x3) (KiCad packages3D, STEP)
- 3D model files:
tps51218dscr-etched.step/tps51218dscr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tps51218dscr.step/tps51218dscr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (30 pp, sha256
a4e19df548ae6c94, retrieved 2026-10-03, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-4-5-20251001(text), consensusclaude-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).