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UCC28C57HQDRQ1

Public Made by Adom

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Texas Instruments AC-DC Controllers And Regulators, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentpower management (pmic)ucc28c57hqdrq1factory-2.0.0extractor-text

Verified UCC28C57HQDRQ1

by Ray · last 6 Nov 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

6 Nov 2026RayPublished by the parts factory: tier mfr, 8 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: UCC28C57HQDRQ1 · SOIC-8 · 8 pins
  • ✓copper: 8 copper pads, none touching another net
  • ✓datasheet: all 8 pin names found in the 54-page datasheet
  • ✓distributor: lcsc C20346044, digikey 296-UCC28C57HQDRQ1TR-ND, mouser 595-UCC28C57HQDRQ1
  • ✓family: SOIC-8_3.9x4.9mm_P1.27mm
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-96zli896/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • •package_fit (skip): no component.package_dims on the page: the model is unchecked against the datasheet drawing
  • ✓pads: 8 pins = 8 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 8 pins agree
  • ✓symbol_text: no pin names collide
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ ucc28c57hqdrq1.kicad_sym✓ ucc28c57hqdrq1.kicad_mod✓ ucc28c57hqdrq1.step
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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 18h ago
viewers ucc28c57hqdrq1: viewers · Ray 18h ago
package.json Publish 0.1.0 · Ray 18h ago
page.json Set visibility: public · Ray 18h ago
README.md Publish 0.1.0 · Ray 18h ago
ucc28c57hqdrq1-etched.glb Publish 0.1.0 · Ray 18h ago
ucc28c57hqdrq1-etched.step ucc28c57hqdrq1: factory component page (tier=mfr) · Ray 18h ago
ucc28c57hqdrq1-hero.glb ucc28c57hqdrq1: hero GLB from the etched model (keeps the MPN mark) · Ray 18h ago
ucc28c57hqdrq1-hero.overlay.json Publish 0.1.0 · Ray 18h ago
ucc28c57hqdrq1.glb Publish 0.1.0 · Ray 18h ago
ucc28c57hqdrq1.kicad_mod Publish 0.1.0 · Ray 18h ago
ucc28c57hqdrq1.kicad_sym Publish 0.1.0 · Ray 18h ago
ucc28c57hqdrq1.lbr Publish 0.1.0 · Ray 18h ago
ucc28c57hqdrq1.step Publish 0.1.0 · Ray 18h ago
verification.json Verified: Published by the parts factory: tier mfr, 8 pins · Ray 18h ago

UCC28C57HQDRQ1

Texas Instruments · AC-DC Controllers And Regulators · SOIC-8

UCC28C57HQDRQ1 from Texas Instruments, in a SOIC-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 for compensation that can source and sink current, and it is internally current limited so forcing COMP to GND commands zero duty cycle.
2 FB input Inverting input to the error amplifier, whose noninverting reference is internally trimmed to 2.5 V ±1%.
3 CS input Primary-side current sense input to the PWM comparator that terminates OUT conduction, with a typical current sense amplifier gain of 3 V/V.
4 RT/CT bidirectional Oscillator timing pin where a resistor from VREF and a capacitor to GND set the switching frequency, with recommended timing resistors of 1 kΩ to 100 kΩ and timing capacitors of 220 pF to 4.7 nF.
5 GND power_in Ground return pin for the output driver stage and the logic level controller section.
6 OUT output Totem-pole gate drive output that sources and sinks up to 1 A peak and is held low when VDD is below the turn-on threshold, and for this UCC28C57H variant its frequency is one-half the oscillator, limiting duty cycle to below 50%.
7 VDD power_in Analog controller bias supply input with a 30 V absolute maximum rating that requires a typical 0.1 µF bypass capacitor connected directly to GND.
8 VREF power_out 5-V reference output that requires a minimum 0.1 µF ceramic bypass capacitor to GND placed as close to the pin as possible.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SOIC-8
Category Power Management (PMIC)
Pins 8

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Input voltage VDD VDD 30 V 5
Input current IVDD IVDD 30 mA 5
Output drive current (peak) -1 1 A 5
Analog input voltage COMP, CS, FB, RT/CT -0.3 6.3 V 5
Output driver voltage OUT -0.3 30 V 5
Reference voltage VREF VREF 7 V 5
Error amplifier output sink current COMP 10 mA 5
Operating junction temperature TJ -40 150 °C 5
Storage temperature Tstg -65 150 °C 5
Input voltage VDD VVDD 28 V 6
Output driver voltage VOUT 28 V 6
Average output driver current IOUT 200 mA 6
Reference output current IOUT(VREF) -20 mA 6
Operating junction temperature TJ -40 150 °C UCC28C5x-Q1 6
Operating ambient temperature TA -40 125 °C UCC28C5x-Q1 6
Junction-to-ambient thermal resistance RθJA 128.9 °C/W D (SOIC) 8 pins 6
Junction-to-case (top) thermal resistance RθJC(top) 71.7 °C/W D (SOIC) 8 pins 6
Junction-to-board thermal resistance RθJB 72.3 °C/W D (SOIC) 8 pins 6
VREF voltage, initial accuracy VVREF 4.95 5 5.05 V IOUT = 1 mA 7
Line regulation 0.2 20 mV VVDD = 12 V to 25 V 7
Load regulation 3 25 mV 1 mA to 20 mA 7
Total output variation 4.82 5.18 V See (2) 7
Output short circuit (source current) IVREF 30 45 55 mA 7
Temperature stability 0.2 0.4 mV/°C See (2) 7
Initial accuracy fOSC fOSC 50.5 53 55 kHz TJ = 25°C, see (3) 7
Initial accuracy fOSC full range fOSC 50.5 57 kHz TJ = Full Range, see (3) 7
Voltage stability 0.2 1 % 12 V ≤ VVDD ≤ 25 V 7
Temperature stability 1 2.5 % TJ(MIN) to TJ(MAX), see (2) 7
Discharge current 7.7 8.4 9 mA TJ = 25°C, VRT/CT = 2 V, see (4) 7
Discharge current full range 7.2 8.4 9.5 mA TJ = Full Range, VRT/CT = 2 V, see (4) 7
Feedback input voltage, initial accuracy VFB 2.475 2.5 2.525 V TJ = 25°C, VCOMP = 2.5 V 7
Feedback input voltage, total variation VFB 2.45 2.5 2.55 V TJ = Full Range, VCOMP = 2.5 V 7
Input bias current IFB 0.1 2 µA VFB = 5 V, (sourcing current) 7
Open-loop voltage gain AVOL 65 dB 2 V ≤ VOUT ≤ 4 V 7
Unity gain bandwidth 1 1.5 MHz See (2) 7
Output sink current 2 14 mA VFB = 2.7 V, VCOMP = 1.1 V 7
Output source current 0.5 1 mA VFB = 2.3 V, VCOMP = 5 V, (sourcing current) 7
Gain TJ = 25°C ACS 2.85 3 3.15 V/V TJ = 25°C, See (5) 7
Gain full range ACS 2.75 3 3.15 V/V TJ = Full Range, See (5) 7
Maximum input signal VCS 0.9 1 1.1 V VFB < 2.4 V 7
Input bias current (source current) ICS 0.1 2 µA 7
CS to output delay tD 35 70 ns 7
RDS(on) pulldown VOUT(low) 5.5 15 Ω ISINK = 200 mA 7
RDS(on) pullup VOUT(high) 10 25 Ω ISOURCE = 200 mA 7
Rise time tRISE 25 50 ns TJ = 25°C, COUT = 1 nF 7
Fall time tFALL 20 40 ns TJ = 25°C, COUT = 1 nF 7
Start threshold UCC28C56H-Q1, UCC28C57H-Q1 VDDON 17.6 18.8 20 V Start threshold 8
Minimum operating voltage UCC28C56H-Q1, UCC28C57H-Q1 VDDOFF 15 15.5 16 V Minimum operating voltage 8
Hysteresis UCC28C56H-Q1, UCC28C57H-Q1 VDDHyst 2.6 3.3 V VDDON - VDDOFF 8
Start-up current ISTART-UP 50 75 µA VVDD = VDDON, 0.5 V 8
Operating supply current IVDD 1.3 2 mA VFB = VCS = 0 V 8
Maximum duty cycle UCC28C57H-Q1, UCC28C57L-Q1, UCC28C59-Q1 DMAX 47 48 % VFB < 2.4 V 8

CAD (KiCad official)

  • Symbol: UCC28C57HQDRQ1
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-8 (KiCad packages3D, STEP)
  • 3D model files: ucc28c57hqdrq1-etched.step / ucc28c57hqdrq1-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ucc28c57hqdrq1.step / ucc28c57hqdrq1.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (54 pp, sha256 bc676a96b11f3510, retrieved 2026-11-06, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-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).

Datasheet PDF