component
BCT2561EUK28-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
markdownBCT2561EUK28-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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bct2561euk28-tr.step/bct2561euk28-tr.glbare 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, 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).