component
LP7812AQVF
Public Made by Adomby adom
LOWPOWER Battery Management, QFN-16-EP(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Generated by kicad-footprint-generator · KiCad file format 20260206
| Name | Last updated |
|---|---|
| docs | 16d ago |
| viewers | 16d ago |
| lp7812aqvf-etched.glb | 16d ago |
| lp7812aqvf-etched.step | 16d ago |
| lp7812aqvf-hero.glb | 16d ago |
| lp7812aqvf-hero.overlay.json | 16d ago |
| lp7812aqvf.glb | 16d ago |
| lp7812aqvf.kicad_mod | 16d ago |
| lp7812aqvf.kicad_sym | 16d ago |
| lp7812aqvf.lbr | 16d ago |
| lp7812aqvf.step | 16d ago |
| package.json | 16d ago |
| page.json | 16d ago |
| README.md | 16d ago |
LP7812AQVF
LOWPOWER · Battery Management · QFN-16-EP(3x3)
LP7812AQVF from LOWPOWER, in a QFN-16-EP(3x3). 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 | USB input pin; the datasheet recommends a decoupling capacitor of at least 1 µF placed close to the pin, and VIN to GND is rated -0.3 V to 28 V. |
| 2 | ISET | passive | Charge current setting pin; the external RISET sets the constant charge current as ICC = 480/RISET (A), with a recommended range of 100 mA to 800 mA. |
| 3 | LED1 | output | LED1 driver pin, rated at 7 mA sink (VLED = 0.4 V) and 7 mA source (VLED = 3.4 V) in the electrical table. |
| 4 | LED2 | output | LED2 driver pin, rated at 7 mA sink (VLED = 0.4 V) and 7 mA source (VLED = 3.4 V) in the electrical table. |
| 5 | HALL | input | Hall sensor detection input for the lid open/close state, with logic high at 1.8 V minimum and logic low at 0.4 V maximum, and a 30 ms open debounce. |
| 6 | KEY | input | Multiplexed pin that must not float: it needs a 1% resistor to ground that sets the earphone charge current (EICC = 50000/R3 A) and it also serves as an active-high key detection input. |
| 7 | NTC | input | NTC temperature sense input, which must use a resistor matched to the thermistor (β = 3950 recommended), and it controls charging between 0 °C and 45 °C. |
| 8 | NTCS | power_out | NTC bias voltage output pin that supplies the NTC divider network. |
| 9 | VOR | power_out | Right earphone output pin, which is weakly pulled up to PMID through a 2 µA source for earphone insertion detection and is disabled above 150 °C junction temperature. |
| 10 | VOL | power_out | Left earphone output pin, which is weakly pulled up to PMID through a 2 µA source for earphone insertion detection and is disabled above 150 °C junction temperature. |
| 11 | PMID | power_out | Boost converter output pin, regulated to 5.1 V typical (5.03 V to 5.17 V at 25 °C), which requires at least 10 µF filtering. |
| 12 | SW | output | Boost converter switching pin, with an absolute maximum rating of -2 V to 8.5 V for 5 ns. |
| 13 | GND | power_in | Boost converter power ground pin that must be connected to the power ground. |
| 14 | NC | unconnected | Not connected; leave floating. |
| 15 | BAT | power_in | Linear charger battery pin, which requires a decoupling capacitor placed close to the pin and a 10 µF BAT capacitance per the recommended operating conditions. |
| 16 | NC | unconnected | Not connected; leave floating. |
| 17 | GND | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | LOWPOWER |
| Package | QFN-16-EP(3x3) |
| Category | Power Management (PMIC) |
| Pins | 17 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Under-voltage lockout threshold (VIN falling) | VINUVLO | 3.6 | 3.8 | 4 | V | VIN 下降沿阈值 | 4 |
| Input over-voltage protection threshold (VIN rising) | VIN_OVP | 6 | 6.2 | 6.55 | V | VIN上升沿阈值 | 5 |
| Trickle charge threshold (BAT rising, LP7812AQVF) | VTRK | 2.75 | 2.8 | 2.85 | V | BAT 上升沿阈值，LP7812AQVF | 5 |
| Trickle charge current | ITRK | 28 | 42 | 57 | mA | ICC=420mA, RISET=1.15k, 10% ICC | 5 |
| Constant charge current | ICC | 378 | 420 | 462 | mA | -10℃ to 85℃ | 5 |
| Float voltage (CV) accuracy | VCV | -0.5 | 0.5 | % | 0℃ to 60℃ | 5 | |
| Termination current | ITERM | 28 | 42 | 57 | mA | ICC=420mA, 10%ICC | 5 |
| Thermal foldback threshold (junction temperature) | TThermal | 100 | 120 | 140 | ℃ | Tj | 5 |
| PMID boost output voltage accuracy | VPMID | 5.03 | 5.1 | 5.17 | V | 25℃ | 6 |
| NTC -10℃ detection threshold (falling) | T-10 | 84 | 85 | 86 | % | 温度下降时 | 6 |
| NTC 0℃ detection threshold (falling) | T0 | 75.5 | 76.5 | 77.6 | % | 温度下降时 | 6 |
| NTC 10℃ detection threshold (falling) | T10 | 66 | 66.8 | 67.5 | % | 温度下降时 | 6 |
| NTC 45℃ detection threshold (rising) | T45 | 29 | 30 | 31 | % | 温度上升时 | 6 |
| NTC 60℃ detection threshold (rising) | T60 | 19 | 20 | 21 | % | 温度上升时 | 6 |
| Earphone discharge current limit | EICC | 90 | 100 | 110 | mA | RKEY=500k,25℃ | 6 |
| Earphone end-of-charge detection current threshold | EEOC | 3 | 4 | 5 | mA | PMID=5.1V | 6 |
| Earphone standby pull-up current | IPUP | 1 | 2 | 3 | uA | BAT=3.6V, 25℃ | 7 |
| Input voltage | VIN | 4 | 6 | V | 4 | ||
| Ambient temperature range | TA | -40 | 85 | ℃ | 4 | ||
| VIN to GND | -0.3 | 28 | V | 4 | |||
| Others to GND | -0.3 | 6.5 | V | 4 | |||
| SW to GND | -2 | 8.5 | V | 5ns | 4 | ||
| Junction temperature | TJ | -40 | 125 | ℃ | 4 | ||
| Ambient temperature | TA | -40 | 85 | ℃ | 4 | ||
| Maximum soldering temperature | 260 | ℃ | at leads, 10 sec | 4 | |||
| ESD HBM rating | 4 | kV | Human Body Model | 4 | |||
| ESD CDM rating | 500 | V | Charged Device Model | 4 | |||
| Junction-to-ambient thermal resistance | θJA | 60 | ℃/W | 4 |
CAD (KiCad official)
- Symbol:
LP7812AQVF - Footprint:
Package_DFN_QFN:QFN-16-1EP_3x3mm_P0.5mm_EP1.7x1.7mm - 3D model: QFN-16-EP(3x3) (KiCad packages3D, STEP)
- 3D model files:
lp7812aqvf-etched.step/lp7812aqvf-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lp7812aqvf.step/lp7812aqvf.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: LOWPOWER datasheet (23 pp, sha256
7ef1a601db3e0a99, retrieved 2026-10-17, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- 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).