# LP28013AQVF

**LOWPOWER** · Battery Management · TDFN-10-EP(3x3)

LP28013AQVF from LOWPOWER, in a TDFN-10-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 | VIN is the input power source connected to a wall adapter; the charger is disabled when VIN is below 3.3V or above 7.0V, with input supply recommended at 4.5V to 6V and surge protection stated up to 28V. |
| 2 | CHRG | output | Open-drain charge status output that is pulled low by an internal NMOS while charging and can be pulled high by an external pull-up resistor when the charge cycle is complete. |
| 3 | PG | output | Open-drain power-good status output that goes low when the input voltage is above UVLO and the battery voltage, indicating a valid input. |
| 4 | EN | input | Active-low charge enable input: the voltage must be below 0.4V to enable charging, the charger shuts down above 2.4V, and floating or tying the pin to GND keeps the IC continuously on. |
| 5 | NTC | passive | Negative temperature coefficient thermistor pin biased by an internal 48µA source, designed for a 10kΩ NTC (β = 3370) with JEITA thresholds at 0°C, 10°C and 60°C; a fixed 10kΩ resistor to GND can be used if NTC monitoring is not needed. |
| 6 | GND | power_in | GND is the connection to system ground. |
| 7 | NC | unconnected | Listed as No Connector (NC) in the pin description; the datasheet assigns no function to this pin. |
| 8 | IBF | passive | Charge status threshold program pin; a resistor RIBF to GND sets the battery-full current as IBF = 1500/RIBF, with a programming range of 10% to 50% of IBAT. |
| 9 | ISET | passive | Charge current program pin; a 1% resistor RISET connected to GND sets the charge current as IBAT = 1500/RISET. |
| 10 | BAT | power_out | Battery connection; a 10µF tantalum capacitor is typically needed for stability when no battery is attached, and only a 1µF ceramic capacitor is required when a battery is attached. |
| 11 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | LOWPOWER |
| Package | TDFN-10-EP(3x3) |
| Category | Power Management (PMIC) |
| Pins | 11 |

## CAD (KiCad official)

- Symbol: `LP28013AQVF`
- Footprint: `Package_DFN_QFN:DFN-10-1EP_3x3mm_P0.5mm_EP1.55x2.48mm`
- 3D model: TDFN-10-EP(3x3) (KiCad packages3D, STEP)
- 3D model files: `lp28013aqvf-etched.step` / `lp28013aqvf-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lp28013aqvf.step` / `lp28013aqvf.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [LOWPOWER datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588912247283965952) (7 pp, sha256 `46ea2cd591d70063`, retrieved 2026-10-09, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-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).

[Datasheet PDF](docs/lp28013aqvf-datasheet.pdf)