component
LP28303ASPF
Public Made by Adomby adom
LOWPOWER Battery Management, ESOP-8. 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
markdownLP28303ASPF
LOWPOWER · Battery Management · ESOP-8
LP28303ASPF from LOWPOWER, in a ESOP-8. 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 | CHRG | output | Open-drain charge status output that is pulled low by an internal N-channel MOSFET while the battery is charging, and is high impedance in shutdown. |
| 2 | FULL | output | Open-drain charge status output that is pulled low by an internal N-channel MOSFET when charging is complete (VFULL is 0.5V maximum at IFULL = 5mA). |
| 3 | NTC | input | Negative temperature coefficient thermistor input that senses battery pack temperature and stops the charger when the temperature is out of range; connect to GND to disable this function. |
| 4 | VBAT | power_out | Battery pin, regulated to the 4.2V float voltage (VFLOAT 4.158V to 4.242V). |
| 5 | CS | input | Current sense pin; the charge current is set as IBAT = 50mV / RCS using the external sense resistor RCS. |
| 6 | SW | output | Switch pin that connects to the external inductor; switch rise and fall times are kept under 5ns per the layout guidance. |
| 7 | AGND | power_in | Analog (signal) ground. |
| 8 | VIN | power_in | Positive supply voltage input, specified 4.5V to 5.5V, to be decoupled with a 10µF or larger surface mounted ceramic capacitor. |
| 9 | PGND | power_in | Power ground on the exposed pad, which must be connected to the ground plane for proper power dissipation. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | LOWPOWER |
| Package | ESOP-8 |
| Category | Power Management (PMIC) |
| Pins | 9 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| VIN pin to GND | 7 | V | 3 | ||||
| VBAT pin to GND | 7 | V | 3 | ||||
| Other pin to GND | 7 | V | 3 | ||||
| Maximum Junction Temperature | 150 | ℃ | 3 | ||||
| Operating Ambient Temperature Range (TA) | TA | -20 | 85 | ℃ | 3 | ||
| Maximum Soldering Temperature | 260 | ℃ | at leads, 10 sec | 3 | |||
| Ambient Temperature Range | TA | -20 | 85 | ℃ | 3 | ||
| Maximum Power Dissipation (ESOP8) | PD | 2 | W | TA=25℃ | 3 | ||
| VIN Adapter/USB Voltage Range | VIN | 4.5 | 5.5 | V | 4 | ||
| Regulated Output (Float) Voltage | VFLOAT | 4.158 | 4.2 | 4.242 | V | 4 | |
| Input Supply Current, Standby Mode (Charge Terminated) | ICC | 0.1 | mA | Standby Mode (Charge Terminated) | 4 | ||
| Current Sense Reference Voltage (For CS to BAT) | VCS | 50 | mV | VTRIKL<VBAT<VFLOAT | 4 | ||
| BAT Pin Current | IBAT | 1000 | mA | Rcs=50mΩ, Current Mode | 4 | ||
| BAT Pin Current | IBAT | 2000 | mA | Rcs=25mΩ, Current Mode | 4 | ||
| BAT Pin Current, Standby Mode | IBAT | 7 | μA | Standby Mode | 4 | ||
| Trickle Charge Current | ITRIKL | 100 | mA | 1V<VBAT<VTRIKL, RCS=50mΩ | 4 | ||
| Trickle Charge Current | ITRIKL | 20 | mA | VBAT<1V, RCS=50mΩ | 4 | ||
| Trickle Charge Threshold Voltage | VTRIKL | 2.8 | V | RCS=50mΩ, VBAT Rising | 4 | ||
| Trickle Charge Hysteresis Voltage | VTRHYS | 100 | mV | RCS=50mΩ | 4 | ||
| Input Regulation Voltage | VREG | 4.3 | V | 4 | |||
| CHRG Pin Output Low Voltage | VCHRG | 0.5 | V | ICHRG=5mA | 4 | ||
| FULL Pin Output Low Voltage | VFULL | 0.5 | V | IFULL=5mA | 4 | ||
| Recharge Threshold Voltage | ΔVRECHRG | 150 | mV | VFLOAT-VRECHRG | 4 | ||
| Junction Temperature in Constant Temperature Mode | TLIM | 150 | ℃ | 4 | |||
| C/10 Terminal Current | ITERM | 100 | mA | RCS=50mΩ | 4 | ||
| Under Voltage Lockout of VIN, rising | UVLO | 4.1 | V | VIN rising | 4 | ||
| Under Voltage Lockout of VIN, falling | UVLO | 3.9 | V | VIN falling | 4 | ||
| Over Voltage Protection of VIN, rising | VOVP | 6 | V | VIN rising | 4 | ||
| Over Voltage Protection of VIN, falling | VOVP | 5.7 | V | VIN falling | 4 | ||
| Switch Frequency | FOSC | 600 | KHz | VIN=5V, Current Mode | 4 | ||
| Protection Threshold Voltage of VNTC, rising | VNTC | 80 | %VIN | VNTC rising | 4 | ||
| Protection Threshold Voltage of VNTC, falling | VNTC | 45 | %VIN | VNTC falling | 4 | ||
| NTC Disable Voltage | 100 | mV | 4 | ||||
| Thermal Resistance (ESOP8) | θJA | 50 | ℃/W | 3 |
CAD (KiCad official)
- Symbol:
LP28303ASPF - Footprint:
Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm - 3D model: ESOP-8 (KiCad packages3D, STEP)
- 3D model files:
lp28303aspf-etched.step/lp28303aspf-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lp28303aspf.step/lp28303aspf.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: LOWPOWER datasheet (8 pp, sha256
f160b4d8c7d33918, retrieved 2026-10-18, 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).