component
LM21215MHE
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
markdownLM21215MHE
Texas Instruments · DC-DC Converters · HTSSOP-20-EP
LM21215MHE 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 | ILIM | passive | A resistor between this pin and AGND sets the rising current limit ICLR, and shorting it to AGND programs the maximum possible current limit. |
| 2 | SS/TRK | passive | An internal 2-µA current source charges an external capacitor between this pin and AGND to set the start-up output voltage ramp rate, and this pin can also configure the tracking feature. |
| 3 | EN | input | Active-high enable input, which can be left open because an internal current source pulls it high. |
| 4 | AVIN | power_in | Analog input supply that generates the internal bias, recommended to be connected to PVIN through a low-pass RC filter; recommended operating range is 2.95 V to 5.5 V. |
| 5 | PVIN | power_in | Input voltage to the internal power switches, to be connected together with pins 6 and 7 at the device, with low-ESR input capacitance placed as close as possible; recommended operating range is 2.95 V to 5.5 V. |
| 6 | PVIN | power_in | Input voltage to the internal power switches, to be connected together with pins 5 and 7 at the device, with low-ESR input capacitance placed as close as possible; recommended operating range is 2.95 V to 5.5 V. |
| 7 | PVIN | power_in | Input voltage to the internal power switches, to be connected together with pins 5 and 6 at the device, with low-ESR input capacitance placed as close as possible; recommended operating range is 2.95 V to 5.5 V. |
| 8 | PGND | power_in | Power ground for the internal power switches, to be connected together with pins 9 and 10. |
| 9 | PGND | power_in | Power ground for the internal power switches, to be connected together with pins 8 and 10. |
| 10 | PGND | power_in | Power ground for the internal power switches, to be connected together with pins 8 and 9. |
| 11 | SW | power_out | Switch node that should be tied locally with pins 12-16 and connected to the filter inductor. |
| 12 | SW | power_out | Switch node that should be tied locally with pins 11 and 13-16 and connected to the filter inductor. |
| 13 | SW | power_out | Switch node that should be tied locally with pins 11-12 and 14-16 and connected to the filter inductor. |
| 14 | SW | power_out | Switch node that should be tied locally with pins 11-13 and 15-16 and connected to the filter inductor. |
| 15 | SW | power_out | Switch node that should be tied locally with pins 11-14 and 16 and connected to the filter inductor. |
| 16 | SW | power_out | Switch node that should be tied locally with pins 11-15 and connected to the filter inductor. |
| 17 | PGOOD | output | Open-drain power-good indicator output. |
| 18 | COMP | passive | 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; the datasheet lists the feedback voltage as 0.6 V with ±1% tolerance. |
| 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-EP |
| Category | Power Supply Chip |
| Pins | 21 |
CAD (KiCad official)
- Symbol:
LM21215MHE - 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:
lm21215mhe-etched.step/lm21215mhe-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm21215mhe.step/lm21215mhe.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (40 pp, sha256
08d986dd316137de, 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, 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).