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, requiring minimal BOM components for compact system size.
· Features a high input voltage range with over-voltage protection for use with low-cost unregulated adapters.
· Charge current is programmable up to 1000 mA via an external resistor.
· Automatically terminates the charge cycle when current drops below a programmable threshold after reaching float voltage.
· Includes PPR and CHG indication pins for device status, with thermal foldback, current monitor, UVLO, and OVP for protection.

FEATURES

· Single-chip charger for 1-cell Li-ion or Polymer batteries with CC/CV charging.
· Programmable charge current up to 1000 mA, with a wide input voltage range from 4.55V to 26.5V.
· Includes charging current monitor, thermal foldback, and power presence indication.
· Soft start for inrush current limitation and automatic battery recharge.
· No external MOSFET, current sensor, or diode required.
· Operates from -40°C to +85°C, available in ESOP-8, DFN2×2, DFN3×2, and DFN3×3 packages.

APPLICATIONS

· Suitable for portable devices, GPS, ePOS, e-cigarettes, and walkie-talkies.
· Ideal for wireless devices, Bluetooth headsets, and personal electronics.
· Applicable in personal healthcare and wearable devices.