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bl9193-adbaprn
Public Unreviewedby Ray
BL Shanghai Belling Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-5. Datasheet-verified pinout, KiCad symbol/footprint/3D.
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markdownBL9193-ADBAPRN
BL Shanghai Belling · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5
BL9193-ADBAPRN from BL Shanghai Belling, in a SOT-23-5. 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 | VIN | power_in | Power input voltage. Operating range 2V to 6V; absolute max -0.3V to +6V. Recommended input capacitor ≥1µF ceramic located <0.5 inch from this pin and returned to a clean analog ground for stability and PSRR. |
| 2 | GND | power_in | Device ground. Also the return for the BP/FB bypass capacitor - connect that capacitor's ground directly to this pin. Use separate VIN and VOUT ground planes joined only at this pin for best PSRR and transient response. |
| 3 | EN | input | Chip enable (TTL-logic). For the '-ADBAPRN' option ('A' enable variant), EN is active-high with an internal 8MΩ pull-down: VIH ≥ 1.2V starts the regulator, VIL ≤ 0.4V forces shutdown (ISTBY < 1µA). Tie to VIN if the enable function is not needed. Absolute max -0.3V to +VIN. |
| 4 | FB | input | Feedback pin for the adjustable version (BL9193-AD). Connect to the tap of an external resistor divider from VOUT to GND; VOUT = VREF × (1 + R1/R2), where VREF = 1.23V typ. Recommended R2 = 30.1kΩ (~50µA divider current) with a small compensation cap (e.g. 22pF) from VOUT to FB for stability. On fixed-output BL9193 variants this same pin is BP (22nF bypass to GND for low output noise); on this '-AD' orderable it functions as FB. |
| 5 | VOUT | power_out | Regulated output voltage, up to 300mA. Current-limited (typ. 430mA) with thermal shutdown at 165°C (30°C hysteresis). Requires ≥1µF low-ESR (>25mΩ) ceramic output capacitor located <0.5 inch from this pin; larger COUT improves noise, PSRR, and load transient response. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | BL Shanghai Belling |
| Package | SOT-23-5 |
| Category | PMIC |
| Pins | 5 |
Ordering variants
BL9193-ADBAPRNBL9193-ADBAPRNURN
CAD (KiCad official)
- Symbol:
BL9193-ADBAPRN - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: BL Shanghai Belling datasheet (None pp, sha256
f0a141621110d1b2, 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).