component
BL9161-15BARN
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BL Shanghai Belling Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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BL9161-15BARN
BL Shanghai Belling · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5
BL9161-15BARN from BL Shanghai Belling, 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 | VIN | power_in | Power input voltage; the electrical characteristics specify an input range of 2V to 5.5V. |
| 2 | GND | power_in | Ground reference pin; the layout section recommends separate VIN and VOUT ground planes, each connected only at this GND pin. |
| 3 | EN | input | Chip enable with an internal pull-down resistor; the regulator turns on when EN is above 1.2V and shuts down when EN falls below 0.4V, and it may be tied to VIN for continuous operation. |
| 4 | NC | unconnected | No connection. |
| 5 | VOUT | power_out | Regulated output voltage; a ceramic output capacitor of at least 1µF with ESR above 25mΩ is required for stability, and at least 2.2µF is recommended for the 1.5V version. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | BL Shanghai Belling |
| Package | SOT-23-5 |
| Category | Power Management (PMIC) |
| 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 | 2 | 5.5 | V | 4 | ||
| Output Voltage Accuracy | VOUT | -2 | 2 | % | VIN=Vout+1V, IOUT=1mA | 4 | |
| Current Limit | ILIM | 360 | 450 | mA | RLOAD=1 | 4 | |
| Load Regulation | ΔVLOAD | 20 | mV | 1mA<IOUT<300mA | 4 | ||
| Line Regulation | ΔVLINE | 0.02 | 0.17 | %/V | VIN=Vout+1V to 5.5V, IOUT=1mA | 4 | |
| Output Voltage Temperature Coefficient | TCVOUT | -60 | 60 | ppm/℃ | IOUT=1mA | 4 | |
| Quiescent Current | IQ | 70 | 110 | µA | VEN>1.2V, IOUT=0mA | 4 | |
| Dropout Voltage | VDROP | 150 | 200 | mV | IOUT=200mA, VOUT=3.3V | 4 | |
| Dropout Voltage | VDROP | 230 | 300 | mV | IOUT=300mA, VOUT=3.3V | 4 | |
| Standby Current | ISTBY | 0.01 | 1 | µA | VEN=GND, Shutdown | 4 | |
| EN Input Bias Current | IIBSD | 2 | µA | VEN=GND or VIN | 4 | ||
| EN Logic Low Threshold | VIL | 0.4 | V | VIN=3V to 5.5V, Shutdown | 4 | ||
| EN Logic High Threshold | VIH | 1.2 | V | VIN=3V to 5.5V, Start up | 4 | ||
| Output Noise Voltage | eNO | 150 | VRMS | 10Hz to 100KHz, IOUT=100mA | 4 | ||
| Power Supply Rejection Ratio | PSRR | -78 | dB | f=217Hz, IOUT=10mA | 4 | ||
| Power Supply Rejection Ratio | PSRR | -71 | dB | f=1KHz | 4 | ||
| Power Supply Rejection Ratio | PSRR | -53 | dB | f=10KHz | 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 | ||
| EN Pin Input Voltage | -0.3 | V | Referenced to VIN (max printed as VIN) | 2 | |||
| Output Voltages | -0.3 | V | Referenced to VIN+0.3V (max printed as VIN+0.3V) | 2 | |||
| Output Current | 300 | mA | 2 | ||||
| Maximum Junction Temperature | 150 | ℃ | 2 | ||||
| Storage Temperature Range | -65 | 125 | ℃ | 2 | |||
| Lead Temperature | 300 | ℃ | Soldering, 10s | 2 | |||
| Operating Temperature Range | -40 | 85 | ℃ | Note 2: guaranteed 0℃ to 70℃ | 2 | ||
| Maximum Operating Junction Temperature | TJ(MAX) | 125 | °C | Application section: maximum operating junction temperature | 7 | ||
| Junction to Ambient Thermal Resistance | ΘJA | 250 | ℃/W | SOT23-5; Note 3: approx. 1 sq. in. 1 oz copper | 2 | ||
| Junction to Case Thermal Resistance | ΘJC | 130 | ℃/W | SOT23-5 | 2 |
CAD (KiCad official)
- Symbol:
BL9161-15BARN - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files:
bl9161-15barn-etched.step/bl9161-15barn-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bl9161-15barn.step/bl9161-15barn.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: BL Shanghai Belling datasheet (10 pp, sha256
6c5ae0f07ee69ca7, 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).
# BL9161-15BARN
**BL Shanghai Belling** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5
BL9161-15BARN from BL Shanghai Belling, 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 | VIN | power_in | Power input voltage; the electrical characteristics specify an input range of 2V to 5.5V. |
| 2 | GND | power_in | Ground reference pin; the layout section recommends separate VIN and VOUT ground planes, each connected only at this GND pin. |
| 3 | EN | input | Chip enable with an internal pull-down resistor; the regulator turns on when EN is above 1.2V and shuts down when EN falls below 0.4V, and it may be tied to VIN for continuous operation. |
| 4 | NC | unconnected | No connection. |
| 5 | VOUT | power_out | Regulated output voltage; a ceramic output capacitor of at least 1µF with ESR above 25mΩ is required for stability, and at least 2.2µF is recommended for the 1.5V version. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | BL Shanghai Belling |
| Package | SOT-23-5 |
| Category | Power Management (PMIC) |
| 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 | 2 | | 5.5 | V | | 4 |
| Output Voltage Accuracy | VOUT | -2 | | 2 | % | VIN=Vout+1V, IOUT=1mA | 4 |
| Current Limit | ILIM | 360 | | 450 | mA | RLOAD=1 | 4 |
| Load Regulation | ΔVLOAD | | | 20 | mV | 1mA<IOUT<300mA | 4 |
| Line Regulation | ΔVLINE | | 0.02 | 0.17 | %/V | VIN=Vout+1V to 5.5V, IOUT=1mA | 4 |
| Output Voltage Temperature Coefficient | TCVOUT | -60 | | 60 | ppm/℃ | IOUT=1mA | 4 |
| Quiescent Current | IQ | | 70 | 110 | µA | VEN>1.2V, IOUT=0mA | 4 |
| Dropout Voltage | VDROP | | 150 | 200 | mV | IOUT=200mA, VOUT=3.3V | 4 |
| Dropout Voltage | VDROP | | 230 | 300 | mV | IOUT=300mA, VOUT=3.3V | 4 |
| Standby Current | ISTBY | | 0.01 | 1 | µA | VEN=GND, Shutdown | 4 |
| EN Input Bias Current | IIBSD | | | 2 | µA | VEN=GND or VIN | 4 |
| EN Logic Low Threshold | VIL | | | 0.4 | V | VIN=3V to 5.5V, Shutdown | 4 |
| EN Logic High Threshold | VIH | 1.2 | | | V | VIN=3V to 5.5V, Start up | 4 |
| Output Noise Voltage | eNO | | 150 | | VRMS | 10Hz to 100KHz, IOUT=100mA | 4 |
| Power Supply Rejection Ratio | PSRR | | -78 | | dB | f=217Hz, IOUT=10mA | 4 |
| Power Supply Rejection Ratio | PSRR | | -71 | | dB | f=1KHz | 4 |
| Power Supply Rejection Ratio | PSRR | | -53 | | dB | f=10KHz | 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 |
| EN Pin Input Voltage | | -0.3 | | | V | Referenced to VIN (max printed as VIN) | 2 |
| Output Voltages | | -0.3 | | | V | Referenced to VIN+0.3V (max printed as VIN+0.3V) | 2 |
| Output Current | | | | 300 | mA | | 2 |
| Maximum Junction Temperature | | | | 150 | ℃ | | 2 |
| Storage Temperature Range | | -65 | | 125 | ℃ | | 2 |
| Lead Temperature | | | | 300 | ℃ | Soldering, 10s | 2 |
| Operating Temperature Range | | -40 | | 85 | ℃ | Note 2: guaranteed 0℃ to 70℃ | 2 |
| Maximum Operating Junction Temperature | TJ(MAX) | | | 125 | °C | Application section: maximum operating junction temperature | 7 |
| Junction to Ambient Thermal Resistance | ΘJA | | 250 | | ℃/W | SOT23-5; Note 3: approx. 1 sq. in. 1 oz copper | 2 |
| Junction to Case Thermal Resistance | ΘJC | | 130 | | ℃/W | SOT23-5 | 2 |
## CAD (KiCad official)
- Symbol: `BL9161-15BARN`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files: `bl9161-15barn-etched.step` / `bl9161-15barn-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bl9161-15barn.step` / `bl9161-15barn.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [BL Shanghai Belling datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588954560912101376) (10 pp, sha256 `6c5ae0f07ee69ca7`, retrieved 2026-10-19, 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](docs/bl9161-15barn-datasheet.pdf)