component
LP3989AB5F
Public Made by Adomby adom
LOWPOWER Linear Voltage Regulators (LDO), SOT-23-5. Pinout cross-checked by two models against the datasheet, 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
markdownLP3989AB5F
LOWPOWER · Linear Voltage Regulators (LDO) · SOT-23-5
LP3989AB5F from LOWPOWER, 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 | EN | input | Chip Enable, active high (above 1.4V on, below 0.4V shutdown, max VIN+0.3V), with an integrated 1MΩ pull-down to GND when floating. |
| 2 | GND | power_in | Ground. |
| 3 | VOUT | power_out | Output voltage, set by Vout = VFB × (1+R1/R2) with VFB = 0.8V. |
| 4 | VIN | power_in | Power input voltage, 2.5V to 6V recommended operating range (absolute maximum 6.5V). |
| 5 | ADJ | input | Feedback pin with 0.8V reference voltage, connected to the R1/R2 divider. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | LOWPOWER |
| Package | SOT-23-5 |
| Category | Power Management ICs |
| 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 |
|---|---|---|---|---|---|---|---|
| Adjustable voltage reference | VFB | 0.784 | 0.8 | 0.816 | V | IOUT=1mA | 4 |
| Quiescent Current | IQ | 90 | 130 | μA | VEN ≥ 1.4V, IOUT = 0mA | 4 | |
| Dropout Voltage 200mA | VDROP | 140 | 160 | mV | IOUT = 200mA, VOUT >2.8V | 4 | |
| Dropout Voltage 400mA | VDROP | 280 | 320 | mV | IOUT = 400mA, VOUT >2.8V | 4 | |
| Dropout Voltage 600mA | VDROP | 420 | 480 | mV | IOUT = 600mA, VOUT >2.8V | 4 | |
| Standby Current | ISTBY | 0.01 | 1 | μA | VEN = GND, Shutdown | 4 | |
| EN Input Bias Current | IEN | 0.8 | 5.3 | μA | VEN = 1V or 5V | 4 | |
| EN Logic-Low Voltage | VIL | 0.4 | V | VIN = 3V to 5.5V, Shutdown | 4 | ||
| EN Logic-High Voltage | VIH | 1.4 | V | VIN = 3V to 5.5V, Start-Up (upper limit VIN+0.3V) | 4 | ||
| Output Loading Current | ILOAD | 600 | mA | VEN=VIN,VIN>2.5V | 4 | ||
| Current Limit | ILIM | 750 | mA | RLOAD = 1Ω | 4 | ||
| Line Regulation | ΔVLINE | 0.3 | % | VIN = (VOUT + 1V) to 5.5V, IOUT = 1mA | 4 | ||
| Load Regulation | ΔLOAD | 2 | % | 1mA < IOUT < 400mA | 4 | ||
| Output Noise Voltage | 100 | uVRMS | 10Hz to 100kHz, IOUT=200mA, Cout=1µF | 4 | |||
| PSRR | PSRR | -76 | dB | f = 100Hz, COUT = 1µF, IOUT = 10mA | 4 | ||
| PSRR | PSRR | -68 | dB | f = 1kHz, COUT = 1µF, IOUT = 10mA | 4 | ||
| Thermal Shutdown Temperature | TSD | 150 | °C | 4 | |||
| Supply Input Voltage | VIN | -0.3 | 6.5 | V | 3 | ||
| EN Pin Voltage | VEN | -0.3 | 6.5 | V | -0.3V to Vin+0.3V | 3 | |
| Power Dissipation SOT23-5 | PD | 500 | mW | TA = 25°C | 3 | ||
| Lead Temperature | 260 | °C | Soldering, 10 sec. | 3 | |||
| Storage Temperature Range | -40 | 165 | °C | 3 | |||
| ESD HBM | 2 | kV | Human Body Mode | 3 | |||
| ESD MM | 200 | V | Machine-Mode | 3 | |||
| Supply Input Voltage | VIN | 2.5 | 6 | V | 3 | ||
| Operation Ambient Temperature Range | TA | -20 | 85 | °C | 3 | ||
| Thermal Resistance Junction to Ambient SOT23-5 | θJA | 195 | °C/W | SOT23-5 | 3 | ||
| Maximum Operating Junction Temperature | TJ(MAX) | 125 | °C | 7 |
CAD (KiCad official)
- Symbol:
LP3989AB5F - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files:
lp3989ab5f-etched.step/lp3989ab5f-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lp3989ab5f.step/lp3989ab5f.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: LOWPOWER datasheet (8 pp, sha256
e8190e62c7e5db49, retrieved 2026-10-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-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).