TPB4056B Datasheet | 3PEAK

Features Description - Single-Chip Charger for 1-cell Li-ion or Polymer Batteries - 4.55-V to 9.8-V Input Volage Operating Range - 26.5-V Maximum Input Voltage Rating - Charging - Up to 1000-m A Programmable Charge Current - 10% Charge Current Accuracy - 4.2-V/4.35-V Charge Float Voltage with 0.5% Accuracy - Charging Current Monitor and Thermal Foldback - Battery Temperature Monitor - Charging Status Detection and Fault Indication - Soft Start for Inrush Current Limitation - Trickle Current Battery Charge - Power Presence Indication - Automatic Battery Recharge - No external MOSFET, Current Sensor Required - Operational Temperature Range: - 40°C to +85°C - Package options: ESOP-8, EMSOP-8 Applications The TPB4056B is a cost-effective, high-integration linear charger for single cell Li-ion or Li-ion polymer batteries. The device supports CC/CV charge from either a USB port or an AC adapter. Low BOM ponent requirement makes the size of the whole system small. High input voltage range with over-voltage protection supports lowcost unregulated adapters. The TPB4056B charge current is fully programmable up to 1000 m A with an external resistor. The TPB4056B automatically terminates the charge cycle when the charge current drops below 10% of the set charge current value after the battery voltage reaches the float voltage. The TPB4056B implements two indication pins, CHRG, and STDBY, allowing connection to microcontroller or LED to show device status. With open-drain structure, CHRG stays low during charging, and STDBY stays low after charging plete, other pins are in the high impedance state. The TPB4056B features thermal foldback function to limit the charge current and protect the device from over junction temperature fault. The TPB4056B also integrates current monitor, UVLO, OVP function to prevent the device from damage. - Portable Devices, GPS, e POS, e-cigarette - Wireless Devices, Bluetooth Headset - Personal Electronics, Personal Healthcare - Wearable...