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LM3102MH

Public Made by Adom

by adom

Texas Instruments DC-DC Converters, HTSSOP-20-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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LM3102MH

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.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm3102mh.step / lm3102mh.glb are 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, primary claude-haiku-5-5 (text), consensus claude-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).

Datasheet PDF