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BCT2019EXKV28-TR

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BROADCHIP Linear Voltage Regulators (LDO), SC-70-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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BCT2019EXKV28-TR

BROADCHIP · Linear Voltage Regulators (LDO) · SC-70-5

BCT2019EXKV28-TR from BROADCHIP, in a SC-70-5. 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 with a supply voltage range of 2.5V to 5.5V, to be bypassed with a 1uF capacitor to GND.
2 GND power_in Ground reference pin for the regulator.
3 EN input Shutdown input where a logic low reduces the supply current to 10nA; connect to IN for normal operation.
4 BP/FB passive On the fixed-voltage version this is the reference-noise bypass pin, to be bypassed with a low-leakage 0.01uF ceramic capacitor for reduced output noise; on the adjustable version it is the FB pin that sets the output voltage.
5 OUT power_out Regulator output.

Key specifications

Parameter Value
Manufacturer BROADCHIP
Package SC-70-5
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 5
Output Voltage Accuracy -2.5 2.5 % IOUT=0.1mA 5
Ground Pin Current IQ 100 200 uA No load, EN=2V 5
Dropout Voltage 270 400 mV IOUT=300mA 5
Line Regulation ΔVLNR 0.02 0.05 %/V VIN=2.5V or (VOUT+0.5V) to 5.5V, IOUT=1mA 5
Load Regulation ΔVLDR 0.002 0.005 %/mA IOUT=0.1mA to 300mA, COUT=1uF, VOUT>2V 5
EN Input Threshold High VIH 1.5 V VIN=2.5V to 5.5V, VEN=-0.3V to VIN 5
EN Input Threshold Low VIL 0.3 V 5
EN Input Bias Current IB(SHDN) 0.01 1 uA EN=0V or EN=5.5V 5
Input to GND (absolute maximum, low limit) -0.3 6 V 3
EN to GND (absolute maximum, low limit) -0.3 V 3
OUT, BP/FB to GND (absolute maximum, low limit) -0.3 V 3
Operating Temperature Range -40 85 ℃ 3
Maximum Operating Junction Temperature TJ(MAX) 125 °C 9
Power Dissipation PD 0.3 W TA=25℃, SC70-5 3
Junction Temperature 150 ℃ 3
Storage Temperature Range -65 150 ℃ 3
Maximum Output Current 250 mA VOUT>2V, SC70-5 5
Current Limit ILIM 800 mA 5
Dropout Voltage at light load 0.9 mV IOUT=1mA 5
Output Voltage Noise en 30 uVRMS f=10Hz to 100kHz, CBP=0.01uF, COUT=10uF 5
Power Supply Rejection Ratio at 217Hz PSRR 77 dB f=217Hz; CBP=0.1uF, ILOAD=50mA, COUT=1uF, VIN=VOUT+1V 5
Power Supply Rejection Ratio at 1kHz PSRR 74 dB f=1kHz; CBP=0.1uF, ILOAD=50mA, COUT=1uF, VIN=VOUT+1V 5
Shutdown Supply Current IQ(SHDN) 0.01 uA EN=0.4V 5
Shutdown Exit Delay 30 us CBP=0.01uF, COUT=1uF, No Load 5
Thermal Shutdown Temperature TSHDN 150 °C 5
Thermal Shutdown Hysteresis ΔTSHDN 15 °C 5
Junction-to-Ambient Thermal Resistance (SC-70-5, JEDEC 51-3 board) θJA 333 °C/W standard JEDEC 51-3 thermal test board 9

CAD (KiCad official)

  • Symbol: BCT2019EXKV28-TR
  • Footprint: Package_TO_SOT_SMD:SOT-353_SC-70-5
  • 3D model: SC-70-5 (KiCad packages3D, STEP)
  • 3D model files: bct2019exkv28-tr-etched.step / bct2019exkv28-tr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bct2019exkv28-tr.step / bct2019exkv28-tr.glb are the bare package body.

Provenance

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

  • Datasheet: BROADCHIP datasheet (13 pp, sha256 6fc65dd02a9ccb91, retrieved 2026-10-18, 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