component
LM21215AMHX-1
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
Open in new tab ↗
Loads on click. Unloads only if this page sits in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads on click. Unloads only if this page sits in the background.
PCB Footprint
Open full view ↗Loads on click. Unloads only if this page sits in the background.
Datasheet
Open in new tab ↗Loads on click. Unloads only if this page sits in the background.
README
markdownLM21215AMHX-1
Texas Instruments · DC-DC Converters · HTSSOP-20-EP
LM21215AMHX-1 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 | SYNC | input | Frequency synchronization input pin; applying clock signal forces device switching at clock frequency, defaults to 500 kHz if unconnected. |
| 2 | SS/TRK | input | Soft-start/tracking control pin with internal 2-µA current source charging external capacitor to set output voltage ramp rate during startup. |
| 3 | EN | input | Active high precision enable input; can be left open, where internal pullup current source pulls it high. |
| 4 | AVIN | power_in | Analog input voltage supply generating internal bias; connect PVIN to AVIN through low pass RC filter to minimize input rail ripple and noise. |
| 5 | PVIN | power_in | Input voltage to power switches; connect all PVIN pins together at device and locate low ESR input capacitor as close as possible. |
| 6 | PVIN | power_in | Input voltage to power switches; connect all PVIN pins together at device and locate low ESR input capacitor as close as possible. |
| 7 | PVIN | power_in | Input voltage to power switches; connect all PVIN pins together at device and locate low ESR input capacitor as close as possible. |
| 8 | PGND | power_in | Power ground pins for internal power switches. |
| 9 | PGND | power_in | Power ground pins for internal power switches. |
| 10 | PGND | power_in | Power ground pins for internal power switches. |
| 11 | SW | output | Switch node pins tied together locally and connected to filter inductor output. |
| 12 | SW | output | Switch node pins tied together locally and connected to filter inductor output. |
| 13 | SW | output | Switch node pins tied together locally and connected to filter inductor output. |
| 14 | SW | output | Switch node pins tied together locally and connected to filter inductor output. |
| 15 | SW | output | Switch node pins tied together locally and connected to filter inductor output. |
| 16 | SW | output | Switch node pins tied together locally and connected to filter inductor output. |
| 17 | PGOOD | tri_state | Open-drain power good indicator output. |
| 18 | COMP | output | Compensation pin connected to output of voltage loop error amplifier. |
| 19 | FB | input | Feedback pin connected to inverting input of voltage loop error amplifier. |
| 20 | AGND | power_in | Quiet analog ground for 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-EP |
| Category | Power Management (PMIC) |
| Pins | 21 |
CAD (KiCad official)
- Symbol:
LM21215AMHX-1 - 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:
lm21215amhx-1-etched.step/lm21215amhx-1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm21215amhx-1.step/lm21215amhx-1.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (41 pp, sha256
1a78c465ce28785b, retrieved 2026-10-01, 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).