component

BL9161G-33BPRT

Public Made by Adom

by adom

BL Shanghai Belling Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-3. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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3D Model

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Symbol & Footprint

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Datasheet

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Contents

README

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BL9161G-33BPRT

BL Shanghai Belling · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-3

BL9161G-33BPRT from BL Shanghai Belling, in a SOT-23-3. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 GND power_in Device ground reference. Connect to the system ground plane.
2 VOUT power_out Regulated 3.3V output (±2%). Requires at least 1µF output capacitor (2.2µF recommended for 1.2V/1.5V/1.8V variants) for stability. Supplies up to 300mA with 205mV dropout.
3 VIN power_in Power input voltage, 2.2V to 6V. A 1µF input decoupling capacitor is recommended. Absolute maximum -0.3V to +6V.

Key specifications

Parameter Value
Manufacturer BL Shanghai Belling
Package SOT-23-3
Category PMIC
Pins 3

Ordering variants

Same part, different packaging or reel option.

  • BL9161G-33BPRT
  • BL9161G-33BPRTRN
  • BL9161G-33BPRTURN
  • BL9161G-33BPRTDRN

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
Dropout Voltage VDROP 135 200 mV IOUT=200mA, VOUT=3.3V 4
Dropout Voltage VDROP 205 300 mV IOUT=300mA, VOUT=3.3V 4
Quiescent Current IQ 70 110 µA VEN>1.2V, IOUT=0mA 4
Line Regulation ∆VLINE 0.02 0.17 %/V VIN=Vout+1V to 5.5V, IOUT=1mA 4
Load Regulation ∆VLOAD 20 mV 1mA<IOUT<300mA 4
Output Voltage Temperature Coefficient TCVOUT -60 60 ppm/℃ IOUT=1mA 4
Thermal Shutdown Temperature TSD 170 ℃ Shutdown, Temp increasing 4
Thermal Shutdown Hysteresis TSDHY 30 ℃ 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
Input Supply Voltage VIN -0.3 6 V 2
Output Voltages -0.3 V Maximum is VIN+0.3V 2
Output Current 300 mA 2
Maximum Junction Temperature 150 °C 2
Operating Temperature Range -40 85 °C Note 2: guaranteed 0°C to 70°C; -40°C to 85°C assured by design and characterization 2
Storage Temperature Range -65 125 °C 2
Lead Temperature (Soldering) 300 °C 10s 2
Maximum Operating Junction Temperature TJ(MAX) 125 °C Applications Information, thermal considerations 7

CAD (KiCad official)

  • Symbol: BL9161G-33BPRT
  • Footprint: Package_TO_SOT_SMD:SOT-23-3
  • 3D model: SOT-23-3 (KiCad packages3D, STEP)
  • 3D model files: bl9161g-33bprt-etched.step / bl9161g-33bprt-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bl9161g-33bprt.step / bl9161g-33bprt.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
bl9161g-33bprt.step 59 KB You want the bare part, or you mark your own boards.
bl9161g-33bprt-etched.step 2.5 MB You want the part with BL9161G-33BPRT already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 610 faces against 69 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

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

  • Datasheet: BL Shanghai Belling datasheet (12 pp, sha256 74f47540de0b9365, retrieved 2026-08-17, tier: lcsc)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF