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BCT2561EUK28-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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BCT2561EUK28-TR

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

BCT2561EUK28-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 Input of supply voltage, operating over 1.6V to 5.5V; place the 1µF or larger input capacitor close to this pin and GND.
2 GND power_in Ground reference; the input and output capacitors should be placed close to this pin and their respective VIN and VOUT pins.
3 EN input Enable control input, active high, with thresholds of VIH 1.5V and VIL 0.4V; a logic low shuts the device down to a typical 10nA shutdown current.
4 NC unconnected No connection.
5 OUT power_out Regulator output, fixed at 2.8V for this part number, with a maximum output current of 300mA.

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 1.6 5.5 V 6
Output Voltage Accuracy (1) -1 1 % IOUT=0.1mA 6
Current Limit ILIM 350 550 mA 6
VIN to GND VIN -0.3 6.5 V 5
EN, OUT to GND EN, OUT -0.3 6 V 5
Operating Temperature Range -40 85 °C 5
Storage Temperature Range -65 150 °C 5
Junction Temperature 150 °C 5
ESD Susceptibility MM 200 V MM 5
EN Input Threshold High VIH 1.5 V 6
EN Input Threshold Low VIL 0.4 V 6
Maximum Output Current 300 mA 6
Ground Pin Current IQ 2 uA No load, EN = VIN 6
Dropout Voltage (VOUT = 2.8V) VDROP 180 mV IOUT=300mA; VOUT = 2.8V 6
Line Regulation ΔVLNR 0.2 % VIN=1.6V or (VOUT+0.5V) to 5.5V, IOUT=30mA 6
Load Regulation ΔVLDR 0.2 % IOUT=10mA to 300mA, COUT=1uF 6
Output Voltage Noise en 48 uVRMS f=10Hz to 100kHz, COUT=1uF, IOUT=100mA 6
Power Supply Rejection Ratio PSRR 70 dB ILOAD=50mA, COUT=1uF, VIN=2.2V, VOUT=1.2V, f=1KHz 6
EN Input Bias Current IIN 0.01 1 uA VIN=5.0V, EN=5.0V 6
Shutdown Supply Current IQ(SHDN) 0.01 1 uA EN=0V 6
Thermal Shutdown Temperature TSHDN 150 °C 6
Thermal Shutdown Hysteresis ΔTSHDN 15 °C 6

CAD (KiCad official)

  • Symbol: BCT2561EUK28-TR
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: bct2561euk28-tr-etched.step / bct2561euk28-tr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bct2561euk28-tr.step / bct2561euk28-tr.glb are the bare package body.

Provenance

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

  • Datasheet: BROADCHIP datasheet (13 pp, sha256 eb030ed459c93c78, 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