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BCT2028EUK28-TR

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BROADCHIP Linear Voltage Regulators (LDO), SOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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BCT2028EUK28-TR

BROADCHIP · Linear Voltage Regulators (LDO) · SOT-23-5

BCT2028EUK28-TR from BROADCHIP, in a SOT-23-5. 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 IN power_in Regulator input; supply voltage can range from 2.5V to 5.5V, and it should be bypassed with a 1uF capacitor to GND.
2 GND power_in Ground.
3 EN input Shutdown input; a logic low reduces the supply current to 10nA, and it should be connected to IN for normal operation.
4 BP passive Reference-noise bypass for the fixed-voltage version; bypass with a low-leakage 0.01uF ceramic capacitor for reduced output noise.
5 OUT power_out Regulator output.

Key specifications

Parameter Value
Manufacturer BROADCHIP
Package SOT-23-5
Category Power Supply Chip
Pins 5

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 VIN 2.5 5.5 V 6
Output Voltage Accuracy -2.5 2.5 % IOUT=0.1mA 6
Maximum Output Current 500 mA 6
Dropout Voltage 270 500 mV IOUT=500mA 6
Dropout Voltage 0.9 mV IOUT=1mA 6
Ground Pin Current IQ 100 200 uA No load, EN=2V 6
EN Input Threshold High VIH 1.5 V VIN=2.5V to 5.5V, VEN=-0.3V to VIN 6
EN Input Threshold Low VIL 0.3 V VIN=2.5V to 5.5V, VEN=-0.3V to VIN 6
EN Input Bias Current IB(SHDN) 0.01 1 uA EN=0V or EN=5.5V 6
Line Regulation ΔVLNR 0.1 %/V VIN=2.5V or (VOUT+0.5V) to 5.5V, IOUT=1mA 6
Load Regulation (VOUT>2V) ΔVLDR 0.002 %/mA IOUT=0.1mA to 500mA, COUT=1uF, VOUT>2V 6
Output Voltage Noise en 50 uVRMS f=10Hz to 100kHz, CBP=0.01uF, COUT=10uF 6
Power Supply Rejection Ratio at 217Hz PSRR 77 dB CBP=0.1uF, ILOAD=50mA, COUT=1uF, VIN=VOUT+1V, f=217Hz 6
Power Supply Rejection Ratio at 1kHz PSRR 74 dB CBP=0.1uF, ILOAD=50mA, COUT=1uF, VIN=VOUT+1V, f=1kHz 6
Shutdown Supply Current IQ(SHDN) 0.01 uA EN=0.4V 6
Shutdown Exit Delay 30 us CBP=0.01uF, COUT=1uF, No Load 6
Thermal Shutdown Temperature TSHDN 150 °C 6
Thermal Shutdown Hysteresis ΔTSHDN 15 °C 6
Output Voltage (nominal for this variant) VOUT 2.8 V 2
IN to GND -0.3 6 V 4
EN to GND -0.3 V upper limit printed as VIN 4
OUT, BP/FB to GND -0.3 V upper limit printed as VIN+0.3V 4
Junction Temperature TJ 150 ℃ 4
Storage Temperature Range TSTG -65 150 ℃ 4
Operating Temperature Range TA -40 85 ℃ 4
Maximum Operating Junction Temperature TJ(MAX) 125 °C For continued operation 9

CAD (KiCad official)

  • Symbol: BCT2028EUK28-TR
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: bct2028euk28-tr-etched.step / bct2028euk28-tr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bct2028euk28-tr.step / bct2028euk28-tr.glb are the bare package body.

Provenance

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

  • Datasheet: BROADCHIP datasheet (11 pp, sha256 dc745d116e775fa4, retrieved 2026-10-19, tier: lcsc)
  • 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