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BL9161G-28BPRT

Public Made by Adom

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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.

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BL9161G-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.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bl9161g-28bprt.step / bl9161g-28bprt.glb are 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, 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