component
LM5118MH
Public Made by Adomby adom
Texas Instruments DC-DC Converters, 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
markdownLM5118MH
Texas Instruments · DC-DC Converters · HTSSOP-20-EP
LM5118MH 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 | Input supply voltage (3V to 75V). |
| 2 | UVLO | input | Undervoltage lockout input; standby mode below 1.23V, normal operation above 1.23V. |
| 3 | RT | input | Oscillator frequency setting via resistor to AGND; range 50kHz to 500kHz. |
| 4 | EN | input | Enable input; low power (<10µA) when below 0.5V, normal operation when above 3V. |
| 5 | RAMP | input | Ramp control input; external capacitor to AGND sets emulated current mode ramp slope. |
| 6 | AGND | power_in | Analog ground. |
| 7 | SS | input | Soft start input; external capacitor with 10µA internal source sets error amplifier reference rise time. |
| 8 | FB | input | Feedback signal input to inverting input of error amplifier from regulated output. |
| 9 | COMP | output | Error amplifier output; connect loop compensation network between COMP and FB pin. |
| 10 | VOUT | input | Output voltage monitor input for emulated current mode control; connect to regulated output. |
| 11 | SYNC | input | External clock synchronization input for switching regulator frequency. |
| 12 | CS | input | Current sense input; connect to diode side of current sense resistor. |
| 13 | CSG | input | Current sense ground reference input; connect to ground side of current sense resistor. |
| 14 | PGND | power_in | Power ground. |
| 15 | LO | output | Boost MOSFET gate drive output; connect to gate of external boost MOSFET. |
| 16 | VCC | power_out | Bias regulator output (4.75V to 14V); decouple to PGND with low ESR/ESL capacitor. |
| 17 | VCCX | power_in | Optional external bias supply input; disables internal VCC regulator when above 3.9V, connect to AGND if unused. |
| 18 | HB | input | Bootstrap capacitor supply for high-side gate driver; capacitor connected between HB and HS. |
| 19 | HO | output | Buck MOSFET gate drive output; connect to gate of high-side buck MOSFET. |
| 20 | HS | input | Buck MOSFET source reference; connect to high-side MOSFET source and bootstrap capacitor. |
| 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 | Power Management (PMIC) |
| Pins | 21 |
CAD (KiCad official)
- Symbol:
LM5118MH - Footprint:
Package_SO:TSSOP-20-1EP_4.4x6.5mm_P0.65mm_EP2.15x3.35mm - 3D model: HTSSOP-20-EP (KiCad packages3D, STEP)
- 3D model files:
lm5118mh-etched.step/lm5118mh-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm5118mh.step/lm5118mh.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (48 pp, sha256
a7cd61394358d330, 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 0.3, 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).