DESCRIPTION

· The TPB4056A is a cost-effective, high-integration linear charger for single-cell Li-ion or Li-ion polymer batteries.

· It supports CC/CV charging from USB ports or AC adapters.

· The device requires minimal BOM components, resulting in a compact system size.

· It features a high input voltage range with over-voltage protection, compatible with low-cost unregulated adapters.

· The charge current is programmable up to 1000 mA using an external resistor.

· It automatically terminates the charge cycle when the current drops below a programmable threshold after reaching float voltage.

· It includes two indication pins (PPR and CHG) for device status monitoring.

· The TPB4056A integrates thermal foldback, current monitor, UVLO, and OVP for enhanced protection.

FEATURES

· Single-chip charger for 1-cell Li-ion or polymer batteries.

· Constant-Current/Constant-Voltage charging.

· Programmable charge current up to 1000 mA.

· Wide input voltage range: 4.55 V to 6.8 V or up to 26.5 V.

· Charging current monitor and thermal foldback.

· Power presence indication and soft start for inrush current limitation.

· Automatic battery recharge.

· No external MOSFET, current sensor, or diode required.

· Operating temperature: -40°C to +85°C.

· Package options: ESOP-8, DFN2×2, DFN3×2, DFN3×3.

APPLICATIONS

· Portable devices: GPS, ePOS, e-cigarettes, walkie-talkies.

· Wireless devices: Bluetooth headsets.

· Personal electronics and healthcare devices.

· Wearable devices.