component
LMR51430YDDCR
Public Made by Adomby adom
Texas Instruments DC-DC Converters, SOT-23-6. Datasheet-verified pinout, 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
markdownLMR51430YDDCR
Texas Instruments · DC-DC Converters · SOT-23-6
LMR51430YDDCR from Texas Instruments, in a SOT-23-6. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | GND | power_in | Power ground terminal connected to the source of the low-side FET internally; connect to system ground and the ground side of CIN and COUT. |
| 2 | SW | output | Switching output node (−0.3 V to 38 V DC) connected to high-side FET source and low-side FET drain; connect to power inductor. |
| 3 | VIN | power_in | Supply input terminal (4.5 V to 36 V) for internal bias LDO and high-side FET; connect directly to input supply and bypass capacitors CIN. |
| 4 | FB | input | Feedback input (0 V to 4.5 V with 0.6-V reference voltage) for setting output voltage via resistor divider; never short to ground during operation. |
| 5 | EN | input | Precision enable input with rising threshold 1.227 V (1.1-1.36 V) and falling threshold 1.08 V (0.95-1.22 V); do not leave floating. |
| 6 | CB | output | Bootstrap capacitor connection for high-side FET driver with 5.5 V maximum relative to SW pin; connect 100-nF ceramic capacitor from CB to SW. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-23-6 |
| Category | Power Management (PMIC) |
| Pins | 6 |
CAD (KiCad official)
- Symbol:
LMR51430YDDCR - Footprint:
Package_TO_SOT_SMD:SOT-23-6 - 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files:
lmr51430yddcr-etched.step/lmr51430yddcr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lmr51430yddcr.step/lmr51430yddcr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (33 pp, sha256
c4ef3cfd8fbc3350, retrieved 2026-09-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-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).