component
BL9161G-28BPRT
Public Made by Adomby adom
BL Shanghai Belling Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-3. 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
markdownBL9161G-28BPRT
BL Shanghai Belling · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-3
BL9161G-28BPRT from BL Shanghai Belling, in a SOT-23-3. 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 | GND | power_in | Ground reference pin for the regulator, to be returned to a clean analog ground and connected only at the device GND pin per the layout guidance. |
| 2 | VOUT | power_out | Regulated output voltage; the output current is rated at 300 mA and output voltages must stay within -0.3 V to VIN+0.3 V. |
| 3 | VIN | power_in | Power input voltage; the operating range is 2.2 V to 6 V and the absolute maximum input supply is -0.3 V to +6 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | BL Shanghai Belling |
| Package | SOT-23-3 |
| Category | Power Management (PMIC) |
| Pins | 3 |
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 | 2.2 | 6 | V | 4 | ||
| Output Voltage Accuracy | VOUT | -2 | 2 | % | VIN=Vout+1V, IOUT=1mA | 4 | |
| Current Limit | ILIM | 360 | 450 | mA | RLOAD=1 | 4 | |
| Quiescent Current | IQ | 70 | 110 | A | VEN>1.2V, IOUT=0mA | 4 | |
| Dropout Voltage | VDROP | 150 | 225 | mV | IOUT=200mA, VOUT=2.8V | 4 | |
| Dropout Voltage | VDROP | 230 | 345 | mV | IOUT=300mA, VOUT=2.8V | 4 | |
| Line Regulation | ΔVLINE | 0.02 | 0.17 | %/V | VIN=Vout+1V to 5.5V, IOUT=1mA | 4 | |
| Load Regulation | ΔVLOAD | 20 | mV | 1mA<IOUT<300mA | 4 | ||
| Output Voltage Temperature Coefficient | TCVOUT | -60 | 60 | ppm/℃ | IOUT=1mA | 4 | |
| Output Noise Voltage | eNO | 180 | VRMS | 10Hz to100KHz, IOUT=100mA | 4 | ||
| Power Supply Rejection Ratio | PSRR | -75 | dB | f=217Hz, IOUT=10mA | 4 | ||
| Power Supply Rejection Ratio | PSRR | -71 | dB | f=1KHz, IOUT=10mA | 4 | ||
| Power Supply Rejection Ratio | PSRR | -55 | dB | f=10KHz, IOUT=10mA | 4 | ||
| Thermal Shutdown Temperature | TSD | 170 | ℃ | Shutdown, Temp increasing | 4 | ||
| Thermal Shutdown Hysteresis | TSDHY | 30 | ℃ | 4 | |||
| Input Supply Voltage | VIN | -0.3 | 6 | V | 2 | ||
| Output Voltages | VOUT | -0.3 | V | Upper limit printed as VIN+0.3V (not numeric) | 2 | ||
| Output Current | IOUT | 300 | mA | 2 | |||
| Maximum Junction Temperature | TJ | 150 | °C | 2 | |||
| Storage Temperature Range | TSTG | -65 | 125 | °C | 2 | ||
| Lead Temperature (Soldering) | 300 | °C | Soldering, 10s | 2 | |||
| Operating Temperature Range | TA | -40 | 85 | °C | Note 2: guaranteed 0°C to 70°C; -40°C to 85°C assured by design and characterization | 2 | |
| Maximum Operating Junction Temperature | TJ(MAX) | 125 | °C | Maximum operation junction temperature per Applications Information | 7 | ||
| Output Capacitor | COUT | 1 | µF | Ceramic output capacitor | 7 | ||
| Output Capacitor ESR | 25 | mΩ | Ceramic output capacitor, ESR is > 25mΩ | 7 |
CAD (KiCad official)
- Symbol:
BL9161G-28BPRT - Footprint:
Package_TO_SOT_SMD:SOT-23-3 - 3D model: SOT-23-3 (KiCad packages3D, STEP)
- 3D model files:
bl9161g-28bprt-etched.step/bl9161g-28bprt-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bl9161g-28bprt.step/bl9161g-28bprt.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: BL Shanghai Belling datasheet (12 pp, sha256
1f5c35b45955d0cb, 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).