component
LM26420XMH
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
markdownLM26420XMH
Texas Instruments · DC-DC Converters · HTSSOP-20-EP
LM26420XMH 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 | VINC | power_in | Input supply for the control circuitry; the recommended VIN range is 3 V to 5.5 V. |
| 2 | EN1 | input | Logic-high enable for Buck 1; do not allow this pin to float or be greater than VIN + 0.3 V. |
| 3 | VIND1 | power_in | Power input supply for Buck 1; the recommended VIN range is 3 V to 5.5 V. |
| 4 | VIND1 | power_in | Power input supply for Buck 1; the recommended VIN range is 3 V to 5.5 V. |
| 5 | SW1 | power_out | Output switch for Buck 1; connect to the inductor. |
| 6 | PGND1 | power_in | Power ground pin for Buck 1. |
| 7 | PGND1 | power_in | Power ground pin for Buck 1. |
| 8 | FB1 | input | Feedback pin for Buck 1; connect to an external resistor divider to set the output voltage. The absolute maximum rating for FB is -0.5 V to 3 V. |
| 9 | PG1 | output | Power-good indicator for Buck 1; open-drain output connected through a resistor to an external supply. |
| 10 | DAP | power_in | Die attach pad; connect to system ground for low thermal impedance, but it cannot be used as a primary GND connection. |
| 11 | DAP | power_in | Die attach pad; connect to system ground for low thermal impedance, but it cannot be used as a primary GND connection. |
| 12 | PG2 | output | Power-good indicator for Buck 2; open-drain output connected through a resistor to an external supply. |
| 13 | FB2 | input | Feedback pin for Buck 2; connect to an external resistor divider to set the output voltage. The absolute maximum rating for FB is -0.5 V to 3 V. |
| 14 | PGND2 | power_in | Power ground pin for Buck 2. |
| 15 | PGND2 | power_in | Power ground pin for Buck 2. |
| 16 | SW2 | power_out | Output switch for Buck 2; connect to the inductor. |
| 17 | VIND2 | power_in | Power input supply for Buck 2; the recommended VIN range is 3 V to 5.5 V. |
| 18 | VIND2 | power_in | Power input supply for Buck 2; the recommended VIN range is 3 V to 5.5 V. |
| 19 | EN2 | input | Logic-high enable for Buck 2; do not allow this pin to float or be greater than VIN + 0.3 V. |
| 20 | AGND | power_in | Signal ground pin; place the bottom resistor of the feedback network as close as possible to this pin. |
| 21 | DAP | 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:
LM26420XMH - 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:
lm26420xmh-etched.step/lm26420xmh-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm26420xmh.step/lm26420xmh.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (49 pp, sha256
990c6ab4facbae3a, retrieved 2026-10-08, 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).