component
LM3102MH
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
markdownLM3102MH
Texas Instruments · DC-DC Converters · HTSSOP-20-EP
LM3102MH 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 | N/C | unconnected | No connection on the HTSSOP package; leave this pin unconnected. |
| 2 | SW | power_out | Power switching node; absolute maximum is -0.3 V to 43.5 V to AGND, with a -2 V transient allowed for less than 100 ns. |
| 3 | SW | power_out | Power switching node; absolute maximum is -0.3 V to 43.5 V to AGND, with a -2 V transient allowed for less than 100 ns. |
| 4 | VIN | power_in | Power input supply voltage; recommended range is 4.5 V to 42 V, with a 43.5 V absolute maximum to AGND. |
| 5 | VIN | power_in | Power input supply voltage; recommended range is 4.5 V to 42 V, with a 43.5 V absolute maximum to AGND. |
| 6 | BST | power_in | Bootstrap capacitor connection; BST to SW must not exceed 7 V (absolute maximum). |
| 7 | AGND | power_in | Analog ground; the feedback divider bottom resistor (RFB2) should be grounded directly to this pin. |
| 8 | SS | passive | Analog soft-start pin; it sources about 8 µA (6 to 10 µA over temperature) at VSS = 0.5 V to set the start-up ramp. |
| 9 | N/C | unconnected | No connection on the HTSSOP package; leave this pin unconnected. |
| 10 | N/C | unconnected | No connection on the HTSSOP package; leave this pin unconnected. |
| 11 | GND | power_in | Ground pin listed in the pin table; the datasheet gives no further electrical limit for it. |
| 12 | N/C | unconnected | No connection on the HTSSOP package; leave this pin unconnected. |
| 13 | FB | input | Analog feedback input that sets the output voltage, with a precision internal 0.8 V reference of ±1.5%. |
| 14 | EN | input | Analog enable input; driving EN to 0 V puts the device in shutdown, where IIN-SD is typically 25 µA. |
| 15 | RON | input | Analog ON-time control that sets the switching frequency (programmable up to 1 MHz); the layout example connects RON to VIN, and its absolute maximum is 43.5 V to AGND. |
| 16 | VCC | power_out | Start-up regulator output that self-biases the internal gate drive and control circuits; the characteristics are specified with a 680 nF capacitor and the device thermal limits external loading. |
| 17 | PGND | power_in | Power ground for the main and synchronous MOSFETs; keep the CIN loop and the connection to CIN as short as possible. |
| 18 | PGND | power_in | Power ground for the main and synchronous MOSFETs; keep the CIN loop and the connection to CIN as short as possible. |
| 19 | N/C | unconnected | No connection on the HTSSOP package; leave this pin unconnected. |
| 20 | N/C | unconnected | No connection on the HTSSOP package; leave this pin unconnected. |
| 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 Supply Chip |
| Pins | 21 |
CAD (KiCad official)
- Symbol:
LM3102MH - 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:
lm3102mh-etched.step/lm3102mh-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm3102mh.step/lm3102mh.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (33 pp, sha256
c1579fd4c432e09c, retrieved 2026-10-07, 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).