component
LP4068B5F
Public Made by Adomby adom
LOWPOWER Battery Management ICs, 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
markdownLP4068B5F
LOWPOWER · Battery Management ICs · SOT-23-5
LP4068B5F 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 | CHRG | output | Open-drain charge status output that is pulled low by an internal NMOS while the battery is charging and can be pulled high by an external resistor when the charge cycle is completed. |
| 2 | GND | power_in | Connection to system ground. |
| 3 | BAT | bidirectional | Connection to the battery; typically a 10µF tantalum capacitor is needed for stability with no battery attached, and only a 1µF ceramic capacitor when a battery is attached. |
| 4 | VIN | power_in | Input power source connected to a wall adapter, with a 4.5V to 6V input voltage range and 6.5V over-voltage protection threshold. |
| 5 | ISET | passive | Charge current program pin; the charge current is set by connecting a 1% resistor (RISET) to ground, with the pin at 1V in current mode. |
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 |
|---|---|---|---|---|---|---|---|
| Input Voltage | VIN | 4.5 | 5 | 6 | V | TA=25°C | 5 |
| Regulated Output (Float) Voltage | VFLOAT | 4.158 | 4.2 | 4.242 | V | IBAT=40mA | 5 |
| Input Voltage to GND | VIN | -0.3 | 28 | V | 4 | ||
| BAT Voltage to GND | VBAT | -5 | 15 | V | 4 | ||
| Other pin to GND | -0.3 | 6.5 | V | 4 | |||
| Maximum Junction Temperature | TJ | 125 | °C | 4 | |||
| Maximum Soldering Temperature | 260 | °C | at leads, 10 sec | 4 | |||
| Operating Junction Temperature Range | TJ | -20 | 85 | °C | 4 | ||
| Storage Temperature | -65 | 165 | °C | 4 | |||
| Maximum Power Dissipation | PD | 0.6 | W | TA=25°C | 4 | ||
| Thermal Resistance | θJA | 200 | °C/W | 4 | |||
| ESD HBM | 2 | kV | Human Body Mode | 4 | |||
| ESD MM | 200 | V | Machine Mode | 4 | |||
| Input Supply Current | IIN | 80 | uA | IBAT=4.2V | 5 | ||
| VIN Under Voltage Lockout Threshold | VUV | 3.5 | V | From VIN Low to High | 5 | ||
| Input Voltage OVP | VOVP | 6.5 | V | VIN Rising | 5 | ||
| OVP Hysteresis | VOVP_HYS | 150 | mV | 5 | |||
| BAT Pin Current | IBAT | 500 | mA | RISET=3.4k, Current Mode | 5 | ||
| BAT Pin Current | IBAT | 100 | mA | RISET=17k, Current Mode | 5 | ||
| BAT Pin Current | IBAT | 1 | uA | VBAT=4.2V (VIN=float or 0V) | 5 | ||
| Trickle Charge Current | ITRIKL | 10 | %IBAT | VBAT<VTRIKL, RISET=10k, Current Mode | 5 | ||
| Trickle Charge Threshold Voltage | VTRIKL | 2.6 | V | VBAT Rising | 5 | ||
| Trickle Charge Hysteresis Voltage | VTRHYS | 150 | mV | 5 | |||
| Termination Current Threshold | ITERM | 10 | %IBAT | 5 | |||
| ISET Pin Voltage | VISET | 1 | V | RISET=10k, Current Mode | 5 | ||
| CHRG Pin Weak Pull-Down Current | ICHRG | 5 | uA | VCHRG=5V | 5 | ||
| CHRG Pin Output Low Voltage | VCHRG | 0.5 | V | ICHRG=5mA | 5 | ||
| Recharge Battery Threshold Voltage | ΔVRECHRG | 150 | mV | VFLOAT-VRECHRG | 5 | ||
| Junction Temperature in Constant Temperature Mode | TLIM | 125 | °C | 5 |
CAD (KiCad official)
- Symbol:
LP4068B5F - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files:
lp4068b5f-etched.step/lp4068b5f-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lp4068b5f.step/lp4068b5f.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: LOWPOWER datasheet (7 pp, sha256
3074c24f62253acd, 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).