component
BCT2057EUK12-TR
Public Made by Adomby adom
BROADCHIP Linear Voltage Regulators (LDO), SOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownBCT2057EUK12-TR
BROADCHIP · Linear Voltage Regulators (LDO) · SOT-23-5
BCT2057EUK12-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, operating from 1.6V to 5.5V with absolute maximum IN to GND of -0.3V to 6.5V. |
| 2 | GND | power_in | Ground pin for the regulator. |
| 3 | EN | input | Enable pin, active high: the regulator turns on when EN is above 1.5V and enters shutdown when EN falls below 0.3V, with EN absolute maximum of -0.3V to VIN. |
| 4 | ADJ | passive | Output voltage adjust pin, which is not connected (NC) on fixed-output versions such as the 1.2V BCT2057EUK12-TR. |
| 5 | OUT | power_out | Regulator output, supplying up to 1A minimum current limit with quick output discharge. |
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 | -2 | 2 | % | IOUT=1mA | 6 | ||
| Ground Pin Current | IQ | 30 | 100 | uA | No load, EN=2V | 6 | |
| EN Input Threshold (high level) | VIH | 1.5 | V | VIN=1.6V to 5.5V, VEN=-0.3V to VIN | 6 | ||
| EN Input Threshold (low level) | VIL | 0.3 | V | 6 | |||
| EN Input Bias Current | IB(SHDN) | 0.01 | 1 | uA | EN=0V or EN=VIN | 6 | |
| Shutdown Supply Current | IQ(SHDN) | 0.01 | 1 | uA | EN=0.4V | 6 | |
| IN to GND voltage | -0.3 | 6.5 | V | 5 | |||
| EN to GND voltage | -0.3 | V | upper limit printed as VIN (not numeric) | 5 | |||
| OUT to GND voltage | -0.3 | V | upper limit printed as VIN+0.3V (not numeric) | 5 | |||
| Power Dissipation SOT23-5 | PD | 0.5 | W | TA=25°C | 5 | ||
| Junction Temperature | 150 | °C | 5 | ||||
| Operating Temperature Range | -40 | 85 | °C | 5 | |||
| Storage Temperature Range | -65 | 150 | °C | 5 | |||
| Maximum Output Current | 1 | A | VIN=1.6V or (VOUT+0.5V) | 6 | |||
| Current Limit | ILIM | 1.8 | A | VIN=1.6V or (VOUT+0.5V) | 6 | ||
| Short-Circuit Current | ISHORT | 0.6 | A | VIN=1.6V or (VOUT+0.5V) | 6 | ||
| Dropout Voltage at 600mA | 0.35 | V | IOUT=600mA, 1.2V ≤ VOUT < 2.5V | 6 | |||
| Dropout Voltage at 1A | 0.55 | V | IOUT=1A, 1.2V ≤ VOUT < 2.5V | 6 | |||
| Line Regulation | ΔVLNR | 0.05 | %/V | VIN=1.6V or (VOUT+0.5V) to 5.5V, IOUT=1mA | 6 | ||
| Load Regulation | ΔVLDR | 0.004 | %/mA | IOUT=1mA to 1A, COUT=4.7uF, VOUT≤2V | 6 | ||
| Power Supply Rejection Ratio at 217Hz | PSRR | 65 | dB | ILOAD=50mA, COUT=4.7uF, VIN=VOUT+1V, f=217Hz | 6 | ||
| Power Supply Rejection Ratio at 1kHz | PSRR | 60 | dB | ILOAD=50mA, COUT=4.7uF, VIN=VOUT+1V, f=1kHz | 6 | ||
| Shutdown Exit Delay | 30 | us | COUT=4.7uF, No Load | 6 | |||
| Thermal Shutdown Temperature | TSHDN | 150 | °C | 6 | |||
| Thermal Shutdown Hysteresis | ΔTSHDN | 15 | °C | 6 |
CAD (KiCad official)
- Symbol:
BCT2057EUK12-TR - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files:
bct2057euk12-tr-etched.step/bct2057euk12-tr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bct2057euk12-tr.step/bct2057euk12-tr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: BROADCHIP datasheet (11 pp, sha256
e2d4a8b052acbab0, retrieved 2026-10-18, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).