component
UCC2813PWTR-1
Public Made by Adomby adom
Texas Instruments AC-DC Controllers And Regulators, TSSOP-8. 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
markdownUCC2813PWTR-1
Texas Instruments · AC-DC Controllers And Regulators · TSSOP-8
UCC2813PWTR-1 from Texas Instruments, in a TSSOP-8. 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 | COMP | output | Error amplifier output and PWM comparator input; feedback loop compensation applied between COMP and FB pins; supports 0.4 to 2.5 mA drain current and -0.2 to -0.8 mA source current; internal soft-start ramps voltage from 0V to REF-1V over 4ms. |
| 2 | FB | input | Inverting input of error amplifier with -2 to 2 µA input bias current; minimize lead length and stray capacitance for best stability. |
| 3 | CS | input | Current sensing comparator input with 100ns internal leading-edge blanking; gain 1.1 to 1.8 V/V with 1.65 V/V typical; maximum input signal 0.9 to 1.1V; overcurrent threshold 1.32 to 1.7V; input bias current ±200 nA. |
| 4 | RC | input | Oscillator timing pin for programming switching frequency and maximum duty cycle using external RC network; recommended timing resistor 10kΩ to 200kΩ and timing capacitor 100pF to 1000pF; keep leads short and directly connected to GND. |
| 5 | GND | power_in | Signal reference ground and power ground for all device functions; use separate ground trace for timing capacitor and critical signal paths. |
| 6 | OUT | output | High-current power driver output capable of ±750mA to ±1A peak current for MOSFET gate drive; output low 0.1-0.4V at 20mA, output high VVCC-0.15-0.4V at -20mA; rise time 41-70ns, fall time 44-75ns with 1nF load; actively held low when VCC below UVLO threshold. |
| 7 | VCC | power_in | Power supply bias input; minimum 11V for normal operation; startup current 0.1-0.23 mA, operating current 0.5-1.2 mA; internal Zener clamp at 12-13.5V nominal; bypass to GND with 0.1µF ceramic capacitor placed close to pin. |
| 8 | REF | power_out | Voltage reference output 5V nominal with ±1.5% tolerance; bias source for error amplifier and IC logic functions; load regulation 10-30mV for 0.2-5mA load current; output noise 70µV (10Hz-10kHz); maximum 5mA output current; bypass to GND with minimum 0.1µF ceramic capacitor. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TSSOP-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
UCC2813PWTR-1 - Footprint:
Package_SO:TSSOP-8_3x3mm_P0.65mm - 3D model: TSSOP-8 (KiCad packages3D, STEP)
- 3D model files:
ucc2813pwtr-1-etched.step/ucc2813pwtr-1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ucc2813pwtr-1.step/ucc2813pwtr-1.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (53 pp, sha256
e691a7fcf4f2163a, retrieved 2026-10-06, 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).