component
LM5116MH
Public Made by Adomby adom
Texas Instruments Global Sourcing Parts, HTSSOP-20-EP. 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
markdownLM5116MH
Texas Instruments · Global Sourcing Parts · HTSSOP-20-EP
LM5116MH from Texas Instruments, in a HTSSOP-20-EP. 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 | VIN | power_in | Chip supply voltage, input voltage monitor, and input to the VCC regulator; operating range 6 V to 100 V. |
| 2 | UVLO | input | Undervoltage lockout input; regulator enters standby mode when below 1.215 V and operational when above 1.215 V with 0.1 V hysteresis. |
| 3 | RT/SYNC | input | Oscillator frequency setting pin; internal resistor to AGND sets switching frequency from 50 kHz to 1 MHz or accepts external clock synchronization via AC-coupled positive edge. |
| 4 | EN | input | Enable control input; regulator enters low-power shutdown below 0.5 V drawing less than 10 µA, normal operation above 3.3 V. |
| 5 | RAMP | input | Ramp generator capacitor connection; external capacitor between this pin and AGND sets ramp slope for emulated current mode control. |
| 6 | AGND | power_in | Analog ground; must be connected to PGND through the exposed pad ground connection. |
| 7 | SS | input | Soft-start capacitor connection; 10-µA internal current source sets soft-start time constant with output reference voltage 1.215 V. |
| 8 | FB | input | Feedback signal input; connected to inverting input of error amplifier with regulation threshold at 1.215 V, operating range −0.3 V to 7 V. |
| 9 | COMP | output | Error amplifier output; loop compensation network (RCOMP, CCOMP) must be connected between this pin and FB pin. |
| 10 | VOUT | input | Output voltage monitor input; connect directly to regulated output for feedback with operating range −0.3 V to 100 V. |
| 11 | DEMB | input | Diode emulation control input monitoring low-side MOSFET source voltage; operation controlled by external resistor with operating range −0.3 V to VCC. |
| 12 | CS | input | Current sense amplifier input; connect to top of current sense resistor or drain of low-side MOSFET with operating range −3.0 V to 100 V. |
| 13 | CSG | power_in | Current sense amplifier reference; connect to bottom of sense resistor or source of low-side MOSFET with operating range −1 V to 1 V. |
| 14 | PGND | power_in | Power ground; must be connected to AGND through the exposed pad ground connection. |
| 15 | LO | output | Low-side MOSFET gate driver output; provides peak sink current 3.5 A and peak source current 1.8 A for gate drive. |
| 16 | VCC | power_in | Internal bias supply output regulated to 7.4 V; locally decouple with low ESR capacitor with minimum source current limit 15 mA. |
| 17 | VCCX | power_in | Optional external VCC supply input; when above 4.5 V the internal VCC regulator disables, must be connected to ground if unused. |
| 18 | HB | power_in | Bootstrap supply for high-side gate driver; charged through bootstrap diode from VCC with HB-to-SW operating range 4.75 V to 15 V. |
| 19 | HO | output | High-side MOSFET gate driver output; provides peak sink current 2.2 A and peak source current 1 A referenced to SW node. |
| 20 | SW | output | Switching node output; connect to bootstrap capacitor negative and high-side MOSFET source with operating range −3.0 V to 100 V. |
| 21 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | HTSSOP-20-EP |
| Category | Global Sourcing Parts |
| Pins | 21 |
CAD (KiCad official)
- Symbol:
LM5116MH - Footprint:
Package_SO:TSSOP-20-1EP_4.4x6.5mm_P0.65mm_EP2.15x3.35mm - 3D model: HTSSOP-20-EP, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 1.2 mm nominal TSSOP 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:
lm5116mh-etched.step/lm5116mh-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm5116mh.step/lm5116mh.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (46 pp, sha256
f2eb85eece02d5e7, 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).