Single-cell lithium-ion linear charger IC provides constant-current and constant-voltage charging for 4.2 V batteries. The charger supports programmable charge current up to 400 mA with thermal regulation, automatic recharge, C/10 termination, and undervoltage lockout. It operates from USB or wall-adapter inputs from 4 V to 8 V and uses a 5-lead SOT-23 package with low external component count.
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| Battery Chemistry | Single-cell lithium-ion |
| Charge Algorithm | Trickle, constant-current, constant-voltage |
| Input Supply Voltage | 4.0 to 8.0V |
| Nominal Input Voltage | 5V |
| Regulated Output Float Voltage | 4.2V |
| Float Voltage Accuracy | ±1% |
| Programmed Charge Current | 400 typ at RPROG=1.66 kΩmA |
| Maximum BAT Pin Current | 800mA |
| Trickle Charge Current | 25 typ at RPROG=10 kΩmA |
| C/10 Termination Current | 40 typ at RPROG=1.66 kΩmA |
| Shutdown Supply Current | 45 typµA |
| Standby Supply Current | 45 typµA |
| BAT Sleep Current | -1 typ at VCC=0 VµA |
| PROG Pin Voltage | 1.0 typV |
| Undervoltage Lockout Threshold | 3.6 typV |
| Operating Ambient Temperature | -40 to 85°C |
| Storage Temperature | -65 to 125°C |
| Package | 5-lead SOT-23 |
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