component
LP3997-30QVF
Public Made by Adomby adom
LOWPOWER(微源半导体) Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, DFN-4(1x1). 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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Contents
README
markdownLP3997-30QVF
LOWPOWER(微源半导体) · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · DFN-4(1x1)
LP3997-30QVF from LOWPOWER(微源半导体), in a DFN-4(1x1). 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 | VOUT | power_out | Output pin; bypass with a 1μF or greater ceramic capacitor from this pin to ground, placed as close to the pin as possible. |
| 2 | GND | power_in | Ground. |
| 3 | EN | input | Active high enable pin with an internal typical 50nA pull-up current source; driving EN over 1V or floating turns on the regulator, and driving it below 0.4V puts the regulator into shutdown mode. |
| 4 | VIN | power_in | Supply input pin that must be closely decoupled to GND with a 1μF or greater ceramic capacitor placed as close to the pin as possible. |
| 5 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | LOWPOWER(微源半导体) |
| Package | DFN-4(1x1) |
| 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 Operation Range | VIN | 1.6 | 6 | V | 5 | ||
| Output Voltage Accuracy (3.0V device) | VOUT | 2.955 | 3 | 3.045 | V | ILOAD=1mA | 5 |
| Load Current Limit | ILIMIT | 400 | 500 | 1000 | mA | VOUT=0.9*VOUT(Nom) | 5 |
| Input Voltage (recommended operating) | VIN | 1.6 | 6 | V | 4 | ||
| Operating Junction Temperature Range (TJ) | TJ | -40 | 150 | ℃ | 4 | ||
| Ambient Temperature Range | TA | -40 | 85 | ℃ | 4 | ||
| VIN Pin to GND | -0.3 | 6.5 | V | 4 | |||
| VOUT, EN Pin to GND | -0.3 | V | Printed as -0.3~VIN (upper limit is VIN) | 4 | |||
| Maximum Junction Temperature (TJ) | TJ | 150 | ℃ | 4 | |||
| Operating Ambient Temperature Range (TA) | TA | -40 | 85 | ℃ | 4 | ||
| Maximum Soldering Temperature (at leads) | 260 | ℃ | at leads, 10 sec | 4 | |||
| ESD HBM (Human Body Model) | 4 | kV | Human Body Model | 4 | |||
| ESD CDM (Charged Device Model) | 1 | kV | Charged Device Model | 4 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | copper | practically possible to the respective LDO pins. Place ground return connections to the input and output capacitors, and to the LDO ground pin as close to each other as possible with a wide and compon | 10 |
CAD (KiCad official)
- Symbol:
LP3997-30QVF - Footprint:
Package_DFN_QFN:UDFN-4-1EP_1x1mm_P0.65mm_EP0.48x0.48mm - 3D model: DFN-4(1x1) (KiCad packages3D, STEP)
- 3D model files:
lp3997-30qvf-etched.step/lp3997-30qvf-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lp3997-30qvf.step/lp3997-30qvf.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: LOWPOWER(微源半导体) datasheet (19 pp, sha256
15263c9f00e270ed, retrieved 2026-10-17, 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).