component
LM20123MHX
Public Made by Adomby adom
Texas Instruments DC-DC Converters, HTSSOP-16-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
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|---|---|
| docs | 28d ago |
| viewers | 28d ago |
| lm20123mhx-etched.glb | 28d ago |
| lm20123mhx-etched.step | 28d ago |
| lm20123mhx-hero.glb | 28d ago |
| lm20123mhx-hero.overlay.json | 28d ago |
| lm20123mhx.glb | 28d ago |
| lm20123mhx.kicad_mod | 28d ago |
| lm20123mhx.kicad_sym | 28d ago |
| lm20123mhx.lbr | 28d ago |
| lm20123mhx.step | 28d ago |
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| README.md | 28d ago |
LM20123MHX
Texas Instruments · DC-DC Converters · HTSSOP-16-EP
LM20123MHX from Texas Instruments, in a HTSSOP-16-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 | SS/TRK | input | Soft-start or tracking control input: an internal 5 µA source charges the external capacitor to set the ramp, an external source below 800 mV overrides the internal reference, and leaving it open activates an internal 1 ms soft-start. |
| 2 | FB | input | Feedback input to the inverting input of the error amplifier, regulated against the 800 mV reference on the non-inverting input. |
| 3 | PGOOD | output | Open-drain power good output that indicates the output is regulating within tolerance; a pull-up resistor of 10 kΩ to 100 kΩ is recommended. |
| 4 | COMP | passive | External compensation pin; a resistor and capacitor are connected to this pin to compensate the device. |
| 5 | NC | unconnected | Must be connected to GND to ensure proper operation. |
| 6 | PVIN | power_in | Input voltage to the internal power switches; connect together with pin 7 at the device and place a low-ESR capacitor near these pins. |
| 7 | PVIN | power_in | Input voltage to the internal power switches; connect together with pin 6 at the device and place a low-ESR capacitor near these pins. |
| 8 | SW | output | PWM switch node output of the internal power switches; connect together with pin 9. |
| 9 | SW | output | PWM switch node output of the internal power switches; connect together with pin 8. |
| 10 | PGND | power_in | Power ground for the internal power switches; connect together with pin 11. |
| 11 | PGND | power_in | Power ground for the internal power switches; connect together with pin 10. |
| 12 | EN | input | Precision enable input where an external voltage divider sets the turn-on threshold; connect to PVIN if not used. |
| 13 | VCC | power_out | Internal 2.7 V sub-regulator output that should be bypassed with a 1 µF ceramic capacitor. |
| 14 | AVIN | power_in | Analog input supply that generates the internal bias and must be connected to VIN through a low-pass RC filter. |
| 15 | AGND | power_in | Quiet analog ground for the internal bias circuitry. |
| 16 | NC | unconnected | Must be connected to GND to ensure proper operation. |
| 17 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | HTSSOP-16-EP |
| Category | Power Management (PMIC) |
| Pins | 17 |
CAD (KiCad official)
- Symbol:
LM20123MHX - Footprint:
Package_SO:TSSOP-16-1EP_4.4x5mm_P0.65mm - 3D model: HTSSOP-16-EP (KiCad packages3D, STEP)
- 3D model files:
lm20123mhx-etched.step/lm20123mhx-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm20123mhx.step/lm20123mhx.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (32 pp, sha256
929a9e8ee8804a05, retrieved 2026-10-11, tier: lcsc) - 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).