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LM21215AMH-1

Public Made by Adom

by adom

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

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LM21215AMH-1

Texas Instruments · DC-DC Converters · HTSSOP-20

LM21215AMH-1 from Texas Instruments, in a HTSSOP-20. 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 SYNC input Frequency synchronization input that forces the device to switch at an applied clock frequency in the 300 kHz to 1.5 MHz range, and the frequency defaults to 500 kHz if left unconnected.
2 SS/TRK input Soft-start control pin where an internal 2-µA current source charges an external capacitor to AGND to set the startup output ramp rate, and the pin can also configure the tracking feature.
3 EN input Active-high precision enable input with hysteresis; if not used it can be left open, as an internal pullup current source pulls it high.
4 AVIN power_in Analog input supply that generates the internal bias, rated 2.95 V to 5.5 V to GND, and should be connected to PVIN through a low-pass RC filter.
5 PVIN power_in Input voltage to the internal power switches that should be tied together at the device with low-ESR input capacitance placed as close as possible; recommended range is 2.95 V to 5.5 V and transients up to 6.5 V for up to 6 ns are tolerated.
6 PVIN power_in Input voltage to the internal power switches that should be tied together at the device with low-ESR input capacitance placed as close as possible; recommended range is 2.95 V to 5.5 V and transients up to 6.5 V for up to 6 ns are tolerated.
7 PVIN power_in Input voltage to the internal power switches that should be tied together at the device with low-ESR input capacitance placed as close as possible; recommended range is 2.95 V to 5.5 V and transients up to 6.5 V for up to 6 ns are tolerated.
8 PGND power_in Power ground pin for the internal power switches.
9 PGND power_in Power ground pin for the internal power switches.
10 PGND power_in Power ground pin for the internal power switches.
11 SW power_out Switch node that should be tied together locally and connected to the filter inductor, tolerating transients up to 9 V for 6 ns and -1 V for 4 ns.
12 SW power_out Switch node that should be tied together locally and connected to the filter inductor, tolerating transients up to 9 V for 6 ns and -1 V for 4 ns.
13 SW power_out Switch node that should be tied together locally and connected to the filter inductor, tolerating transients up to 9 V for 6 ns and -1 V for 4 ns.
14 SW power_out Switch node that should be tied together locally and connected to the filter inductor, tolerating transients up to 9 V for 6 ns and -1 V for 4 ns.
15 SW power_out Switch node that should be tied together locally and connected to the filter inductor, tolerating transients up to 9 V for 6 ns and -1 V for 4 ns.
16 SW power_out Switch node that should be tied together locally and connected to the filter inductor, tolerating transients up to 9 V for 6 ns and -1 V for 4 ns.
17 PGOOD output Open-drain power-good indicator output.
18 COMP output Compensation pin connected to the output of the voltage loop error amplifier.
19 FB input Feedback pin connected to the inverting input of the voltage loop error amplifier, with the output adjustable from 0.6 V to VIN.
20 AGND power_in Quiet analog ground for the internal reference and bias circuitry.
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
Category Power Management (PMIC)
Pins 21

CAD (KiCad official)

  • Symbol: LM21215AMH-1
  • Footprint: Package_SO:TSSOP-20-1EP_4.4x6.5mm_P0.65mm_EP2.15x3.35mm
  • 3D model: HTSSOP-20, 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: lm21215amh-1-etched.step / lm21215amh-1-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm21215amh-1.step / lm21215amh-1.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (41 pp, sha256 1a78c465ce28785b, retrieved 2026-10-12, 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