component
LP3987H-33B5F
Public Unreviewedby Ray
LOWPOWER Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-5. Datasheet-verified pinout, 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
markdownLP3987H-33B5F
LOWPOWER · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5
LP3987H-33B5F from LOWPOWER, 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 2.5V to 6.0V (abs max 6.5V). Requires >=1µF (typ 2.2µF) ceramic bypass capacitor placed within 0.5 inch of the pin. |
| 2 | GND | power_in | Device ground reference. Return path for input and output bypass capacitors; connect to a clean analog ground plane. |
| 3 | EN | input | Chip Enable, active high. VIH >= 1.4V enables the regulator; VIL <= 0.4V puts the device into shutdown (<0.01µA typ). High-impedance input with an integrated 1MΩ pull-down to GND, so a floating EN defaults to OFF. Tie to VIN for always-on operation. |
| 4 | NC | unconnected | No internal connection. Leave floating or tie to GND per PCB convenience. |
| 5 | VOUT | power_out | Regulated output voltage. For the -33 option this is 3.3V ±2% at IOUT up to 600mA (current limit ~800mA). Requires >=1µF (typ 2.2µF) low-ESR ceramic output capacitor placed within 0.5 inch of the pin for stability. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | LOWPOWER |
| Package | SOT-23-5 |
| Category | PMIC |
| Pins | 5 |
Ordering variants
Same part, different packaging or reel option.
LP3987H-33B5F
CAD (KiCad official)
- Symbol:
LP3987H-33B5F - 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: LOWPOWER datasheet (8 pp, sha256
50e1dbadbc8094b8, 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).