component
LM5020SDX-1
Public Made by Adomby adom
Texas Instruments DC-DC Controllers, WSON-10-EP(4x4). 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
markdownLM5020SDX-1
Texas Instruments · DC-DC Controllers · WSON-10-EP(4x4)
LM5020SDX-1 from Texas Instruments, in a WSON-10-EP(4x4). 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 | VIN | power_in | Input to the start-up regulator, rated for an input range of 13V to 100V in the pin table (the Operating Ratings section lists 13V to 90V). |
| 2 | FB | input | Inverting input of the internal error amplifier, whose non-inverting input is fixed at a 1.25V reference, and grounding FB disables the amplifier. |
| 3 | COMP | output | Output of the error amplifier and input to the PWM comparator, with an internal 5K pull-up to a 5V reference that can bias an optocoupler transistor. |
| 4 | VCC | power_out | Output of the internal high-voltage series-pass regulator, regulated to 7.7V (7.4V to 8.0V), with a recommended external capacitor of 0.1µF to 100µF and an external bias of 8V to 15V permitted. |
| 5 | OUT | output | Gate driver output of the PWM controller, capable of sourcing and sinking a peak current of 1A. |
| 6 | GND | power_in | Ground return for the controller. |
| 7 | UVLO | input | Line under-voltage shutdown input with a 1.25V threshold, where an external divider sets the operating range and hysteresis is set by a switched internal 20µA current source. |
| 8 | CS | input | Current sense input for current-mode control and cycle-by-cycle over-current protection, where a voltage above 0.5V switches OUT low and CS is blanked for 50ns after OUT goes high. |
| 9 | RT/SYNC | input | Oscillator timing resistor pin, where a resistor from RT to GND sets the frequency and a sync pulse with a peak above 3.7V can be applied through a 100pF capacitor. |
| 10 | SS | input | Soft-start input, where an external capacitor and an internal 10µA current source set the soft-start ramp rate. |
| 11 | EP | passive | Exposed thermal pad that must be soldered to the printed circuit board for thermal and mechanical performance. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | WSON-10-EP(4x4) |
| Category | Power Supply Chip |
| Pins | 11 |
CAD (KiCad official)
- Symbol:
LM5020SDX-1 - Footprint:
Package_SON:WSON-10-1EP_4x4mm_P0.8mm_EP2.6x3mm - 3D model: WSON-10-EP(4x4) (KiCad packages3D, STEP)
- 3D model files:
lm5020sdx-1-etched.step/lm5020sdx-1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm5020sdx-1.step/lm5020sdx-1.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (21 pp, sha256
b8a952100c1b7734, 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).