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BCT2038EUK12-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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BCT2038EUK12-TR

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

BCT2038EUK12-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 1.6V to 5.5V and the pin should be bypassed with a 1μF capacitor to GND.
2 GND power_in Ground reference pin for the regulator.
3 EN input Enable pin with an internal pull-down resistor; a logic low reduces the supply current to less than 1μA, and it must be connected to IN for normal operation.
4 BP passive Reference-noise bypass pin on the fixed-voltage version (this MPN is 1.2V fixed); bypass with a low-leakage 0.01μF ceramic capacitor placed very close to the pin for reduced output noise and high PSRR.
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 1.6 5.5 V +25℃ 5
Output Voltage Accuracy -2.5 2.5 % IOUT = 0.1mA, +25℃ 5
Dropout Voltage (1.2V ≤ VOUT < 1.8V) VDROP 945 1280 mV IOUT = 500mA, +25℃ 5
Line Regulation (VOUT < 1.8V or VOUT > 3.3V) 0.01 0.1 %/V VIN = 1.6V or (VOUT + 0.5V) to 5.5V, IOUT = 1mA, +25℃ 5
Load Regulation ΔVOUT 12 40 mV IOUT = 0.1mA to 500mA, +25℃ 5
Maximum Output Current 500 mA +25℃, see Note 1 5
Current Limit ILIM 560 800 mA +25℃ 5
Short Current Limit ISHORT 320 mA VOUT = 0V, +25℃ 5
Ground Pin Current IQ 20 26 µA No Load, VEN = VIN, +25℃ 5
Power Supply Rejection Ratio (f = 217Hz, CBP = 0µF) PSRR 80 dB CBP = 0µF, IOUT = 30mA, COUT = 1μF, VIN = 2.8V, VOUT = 1.8V, ΔVRIPPLE = 0.2VP-P, f = 217Hz, +25℃ 5
Power Supply Rejection Ratio (f = 1kHz, CBP = 0µF) PSRR 70 dB CBP = 0µF, IOUT = 30mA, COUT = 1μF, VIN = 2.8V, VOUT = 1.8V, ΔVRIPPLE = 0.2VP-P, f = 1kHz, +25℃ 5
Power Supply Rejection Ratio (f = 217Hz, CBP = 0.01µF) PSRR 82 dB CBP = 0.01μF, IOUT = 30mA, COUT = 1μF, VIN = 2.8V, VOUT = 1.8V, ΔVRIPPLE = 0.2VP-P, f = 217Hz, +25℃ 5
Power Supply Rejection Ratio (f = 1kHz, CBP = 0.01µF) PSRR 75 dB CBP = 0.01μF, IOUT = 30mA, COUT = 1μF, VIN = 2.8V, VOUT = 1.8V, ΔVRIPPLE = 0.2VP-P, f = 1kHz, +25℃ 5
Output Voltage Noise (CBP = 0µF, IOUT = 0mA) en 70 µVRMS CBP = 0µF, f = 10Hz to 100kHz, COUT = 1µF, VIN = 2.8V, VOUT = 1.8V, IOUT = 0mA, +25℃ 5
Output Voltage Noise (CBP = 0µF, IOUT = 30mA) en 100 µVRMS CBP = 0µF, f = 10Hz to 100kHz, COUT = 1µF, VIN = 2.8V, VOUT = 1.8V, IOUT = 30mA, +25℃ 5
Output Voltage Noise (CBP = 0.01µF, IOUT = 0mA) en 25 µVRMS CBP = 0.01µF, f = 10Hz to 100kHz, COUT = 1µF, VIN = 2.8V, VOUT = 1.8V, IOUT = 0mA, +25℃ 5
Output Voltage Noise (CBP = 0.01µF, IOUT = 30mA) en 65 µVRMS CBP = 0.01µF, f = 10Hz to 100kHz, COUT = 1µF, VIN = 2.8V, VOUT = 1.8V, IOUT = 30mA, +25℃ 5
Output Voltage Temperature Coefficient TCVOUT 30 ppm/℃ IOUT = 0.1mA, Full (-40℃ to +85℃) 5
EN Input Threshold High VIH 1.5 V VIN = 1.6V to 5.5V, Full 6
EN Input Threshold Low VIL 0.4 V VIN = 1.6V to 5.5V, Full 6
EN Input Bias Current (high) IBH 0.8 2 µA VEN = 5.5V, Full 6
EN Input Bias Current (low) IBL 0.01 1 µA VEN = 0V, Full 6
Shutdown Supply Current ISHDN 0.01 1 µA VEN = 0V, Full 6
Start-Up Time tSTR 30 µs COUT = 1μF, No Load, CBP = 0µF, +25℃ 6
RON of Discharge MOSFET RON 50 Ω VIN = 4.0V, VEN = 0V, +25℃ 6
Thermal Shutdown Temperature TSHDN 140 ℃ 6
Thermal Shutdown Hysteresis ΔTSHDN 15 ℃ 6
Operating Voltage Range VIN 1.6 5.5 V 3
Operating Temperature Range TA -40 85 ℃ 3
IN to GND VIN -0.3 6 V 3
EN to GND VEN -0.3 6 V 3
OUT, BP/FB to GND -0.3 V Upper limit printed as (VIN +0.3V) 3
Junction Temperature TJ 150 ℃ 3
Storage Temperature Range TSTG -65 150 ℃ 3

CAD (KiCad official)

  • Symbol: BCT2038EUK12-TR
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: bct2038euk12-tr-etched.step / bct2038euk12-tr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bct2038euk12-tr.step / bct2038euk12-tr.glb are the bare package body.

Provenance

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

  • Datasheet: BROADCHIP datasheet (18 pp, sha256 85f29f031228797a, retrieved 2026-10-17, 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