Standalone linear single-cell lithium-ion battery charger provides constant-current and constant-voltage charging with thermal regulation. The charge voltage is fixed at 4.2 V with ±1% accuracy, and charge current is programmable up to 800 mA with one external resistor. The device supports USB-powered charging, automatic recharge, C/10 termination, under-voltage lockout, over-voltage protection, soft start, and a charge-status output. The orderable configuration uses trickle-charge operation, a lead-free SOT-23-5 package, and an operating temperature range of -40 °C to 85 °C.
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| Battery chemistry | Single-cell Li-Ion |
| Charger topology | Standalone linear CC/CV |
| Maximum programmable charge current | 800mA |
| Float voltage | 4.2V |
| Float voltage accuracy | ±1% |
| Input supply voltage operating range | 4.5 to 6.5V |
| Input supply voltage absolute maximum | -0.3 to 10V |
| Charge-mode battery current with 2 kΩ RPROG | 500 typicalmA |
| Charge-mode battery current with 10 kΩ RPROG | 100 typicalmA |
| Trickle charge current with 2 kΩ RPROG | 50 typicalmA |
| Trickle charge threshold | 2.9 typicalV |
| Automatic recharge battery voltage | 4.05 typicalV |
| Input over-voltage protection threshold | 7 typicalV |
| Junction temperature in thermal regulation | 120 typical°C |
| Operating temperature range | -40 to 85°C |
| Package | 5-lead SOT-23 |
| Thermal resistance junction-to-ambient | 250°C/W |
| Termination current threshold | C/10 |
| Lead Free | Yes |
| RoHS | Compliant |
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