component
LM51561QDSSRQ1
Public Made by Adomby adom
Texas Instruments DC-DC Converters, WSON-12-EP(2x3). 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
markdownLM51561QDSSRQ1
Texas Instruments · DC-DC Converters · WSON-12-EP(2x3)
LM51561QDSSRQ1 from Texas Instruments, in a WSON-12-EP(2x3). 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 | BIAS | power_in | Supply voltage input to internal VCC regulator; supports 2.97V to 60V operating range with 65V absolute maximum for automotive load dump transients. |
| 2 | VCC | power_in | Regulated output voltage from internal VCC regulator and supply input for MOSFET gate driver; 6.85V typical with absolute maximum 18V or VBIAS+0.3V. |
| 3 | GATE | output | N-channel MOSFET gate drive output capable of sourcing and sinking 1.5A peak current with output swing from 0.15V low state to VCC minus 0.25V high state. |
| 4 | GND | power_in | Ground return pin; connect directly to sense resistor ground through low-inductance wide and short path and to ground copper plane. |
| 5 | CS | input | Low-side current sense input; 100mV±7% peak current limit threshold with 0.3V DC and -1V for 50ns transient absolute maximum ratings. |
| 6 | COMP | output | Transconductance error amplifier output with 10MΩ output impedance and internal voltage clamps at 2.5-2.8V rising and 1-1.1V falling. |
| 7 | DITHOFF | input | Spread spectrum dithering selection input; internal dithering enabled when voltage is less than 1.0V or connected to GND, disabled when greater than 2.0V or connected to VCC. |
| 8 | FB | input | Inverting input of internal error amplifier; 1V±1% internal reference with 4.0V absolute maximum rating. |
| 9 | SS | input | Soft-start capacitor programming pin; charged by 10µA internal current source to ramp error amplifier reference during power-on soft start sequence. |
| 10 | RT | input | Switching frequency programming pin; regulated to 0.5V by internal regulator with programmable frequency range from 100kHz to 2.2MHz. |
| 11 | PGOOD | output | Power-good indicator open-drain output; pulls low when FB falls below undervoltage threshold with 18V absolute maximum and 1mA maximum sink capability. |
| 12 | UVLO/SYNC/EN | input | Undervoltage lockout and external clock synchronization input; 1.5V typical rising threshold and 1.45V typical falling threshold with 50mV hysteresis. |
| 13 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | WSON-12-EP(2x3) |
| Category | Power Management (PMIC) |
| Pins | 13 |
CAD (KiCad official)
- Symbol:
LM51561QDSSRQ1 - Footprint:
Package_SON:WSON-12-1EP_3x2mm_P0.5mm_EP1x2.65 - 3D model: WSON-12-EP(2x3), generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.75 mm nominal WSON height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
- 3D model files:
lm51561qdssrq1-etched.step/lm51561qdssrq1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm51561qdssrq1.step/lm51561qdssrq1.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (50 pp, sha256
2f02152f7d3a5e51, retrieved 2026-10-01, 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 0.2, 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).