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LMR51610YFDBVR
Public Made by Adomby adom
TEXAS INSTRUMENTS Global Sourcing Parts, SOT-23-6. 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
markdownLMR51610YFDBVR
TEXAS INSTRUMENTS · Global Sourcing Parts · SOT-23-6
LMR51610YFDBVR from TEXAS INSTRUMENTS, in a SOT-23-6. 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 | CB | passive | Bootstrap capacitor connection for the high-side FET driver; connect a 100 nF good-quality capacitor between this pin and SW (the datasheet elsewhere recommends 0.1 µF, X7R or X5R, rated 16 V or higher). |
| 2 | GND | power_in | Power ground, internally connected to the low-side FET source; connect to system ground and the ground side of CIN and COUT, keeping the connection to CIN as short as possible. |
| 3 | FB | input | Converter feedback input; connect a resistor divider to set the output voltage, and do not short this terminal to ground during operation. |
| 4 | EN | input | Precision enable input that turns the converter on (high) and off (low); it must not be left floating, may be tied to VIN, and an external resistor divider can set an adjustable UVLO. |
| 5 | VIN | power_in | Input supply pin for the internal bias LDO and the high-side FET; connect to the input supply and input bypass capacitor CIN, which must be connected directly to this pin and GND. |
| 6 | SW | power_out | Converter switching output, internally connected to the high-side FET source and low-side FET drain; connect to the power inductor. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | TEXAS INSTRUMENTS |
| Package | SOT-23-6 |
| Category | Global Sourcing Parts |
| Pins | 6 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| VIN to GND | VIN | -0.3 | 70 | V | 4 | ||
| FB to GND | FB | -0.3 | 5.5 | V | 4 | ||
| SW to GND | SW | -0.3 | 70 | V | 4 | ||
| SW to GND transient | SW | -5 | 70 | V | transient less than 10 ns | 4 | |
| CBOOT to SW | CBOOT | -0.3 | 5.5 | V | 4 | ||
| Junction temperature | TJ | -40 | 150 | °C | 4 | ||
| Storage temperature | Tstg | -55 | 150 | °C | 4 | ||
| Input voltage VIN to GND | VIN | 4 | 65 | V | 4 | ||
| FB pin voltage | FB | 0 | 4.5 | V | 4 | ||
| Output voltage | VOUT | 0.8 | 28 | V | 4 | ||
| Output current LMR51610 | Iout | 1 | A | LMR51610 variant | 4 | ||
| Operating junction temperature | TJ | -40 | 150 | °C | 4 | ||
| EN voltage (EN to GND) | EN | 0 | V | upper limit printed as VIN | 4 | ||
| EN to GND | EN | -0.3 | V | upper limit printed as VIN + 0.3 V | 4 | ||
| Rising EN threshold (enable switching) | VEN(R) | 1.1 | 1.227 | 1.36 | V | EN rising, enables switching | 5 |
| Falling EN threshold (disable switching) | VEN(F) | 0.85 | 1 | 1.15 | V | EN falling, disables switching | 5 |
| EN pin pull current after EN rising threshold | IEN(P2) | 10 | 50 | nA | VEN = 3V | 5 | |
| VIN shutdown supply current | ISD(VIN) | 0.8 | 3 | µA | VEN = 0V | 5 | |
| Reference voltage | Vfb | 0.788 | 0.8 | 0.812 | V | 5 | |
| Switching frequency, CCM, Y version | fSW(CCM) | 0.935 | 1.1 | 1.265 | Mhz | CCM operation, Y version | 5 |
| High-side peak current limit | IHS_PK(OC) | 1.25 | 1.6 | 1.95 | A | LMR51610 | 6 |
| Low-side valley current limit | ILS_V(OC) | 0.9 | 1.1 | 1.3 | A | LMR51610, TJ = -40°C to 105°C | 6 |
| Low-side negative current limit (FPWM only) | ILS(NOC) | -0.66 | A | LMR51610 FPWM only | 6 | ||
| VIN UVLO rising threshold | VINUVLO(R) | 3.82 | 4 | V | VIN rising | 5 | |
| VIN UVLO falling threshold | VINUVLO(F) | 3.4 | 3.56 | V | VIN falling | 5 | |
| VIN UVLO hysteresis | VINUVLO(H) | 0.25 | V | 5 | |||
| VIN quiescent current, FPWM operation | IQ(VIN) | 420 | µA | VEN = 3V, FPWM operation | 5 | ||
| FB input leakage current | IFB(LKG) | 0.2 | nA | VFB = 0.8 V | 5 | ||
| Internal fixed soft-start time | tSS | 2.3 | ms | 5 | |||
| High-side MOSFET on-resistance | RDSON(HS) | 0.7 | Ω | VIN = 12V, TJ = 25°C | 5 | ||
| Low-side MOSFET on-resistance | RDSON(LS) | 0.36 | Ω | VIN = 12V, TJ = 25°C | 5 | ||
| Minimum ON pulse width | tON(min) | 80 | ns | VIN = 12V, IOUT = 0.1A | 5 | ||
| Maximum ON pulse width | tON(max) | 5 | µs | VIN = 12V, IOUT = 0.5A | 5 | ||
| Minimum OFF pulse width | tOFF(min) | 200 | ns | VIN = 5V | 5 | ||
| Output voltage regulation accuracy | VOUT | -1.5 | 2.5 | % | PFM operation, VIN = 24V, IOUT = 0A to full load (printed for PFM; FPWM not separately listed) | 6 | |
| FB voltage to force hiccup | VHC | 0.32 | V | 6 | |||
| Maximum duty cycle | DMAX | 98 | % | 6 | |||
| Switch voltage dead time | tD | 5 | ns | 6 | |||
| Thermal shutdown threshold | TJ(SD) | 165 | °C | temperature rising | 6 | ||
| Thermal shutdown hysteresis | TJ(HYS) | 20 | °C | not production tested | 6 | ||
| Junction-to-ambient thermal resistance | RθJA | 147.8 | °C/W | JESD 51-7, 4-layer JEDEC board; for comparison only | 5 | ||
| Junction-to-ambient thermal resistance (EVM) | RθJA(Effective) | 95 | °C/W | EVM | 5 | ||
| Junction-to-case (top) thermal resistance | RθJC(top) | 71.1 | °C/W | 5 | |||
| Junction-to-board thermal resistance | RθJB | 36.6 | °C/W | 5 | |||
| Junction-to-top characterization parameter | ψJT | 14.2 | °C/W | 5 | |||
| Junction-to-board characterization parameter | ψJB | 36.4 | °C/W | 5 |
CAD (KiCad official)
- Symbol:
LMR51610YFDBVR - Footprint:
Package_TO_SOT_SMD:SOT-23-6 - 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files:
lmr51610yfdbvr-etched.step/lmr51610yfdbvr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lmr51610yfdbvr.step/lmr51610yfdbvr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: TEXAS INSTRUMENTS datasheet (33 pp, sha256
5c1fcf38e7a0045e, retrieved 2026-10-17, 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, primaryclaude-haiku-5-5(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).