Single Cell Battery Linear Charger with Maximum 1000mA Programmable Charge Current and 10% Charge Current Accuracy
3PEAK's TPB4056A device is a cost-effective, high-integration linear charger for single cell Li-ion or polymer batteries. The device support CC/CV charge from either USB or AC adapter. Low BOM components requirement makes whole system small in size. High input voltage range with over-voltage protection supports low-cost unregulated adapters.
The TPB4056A device charge current is fully programmable up to 1000mA with an external resistor. The TPB4056A device automatic terminates the charge cycle when the charge current drops below a programmable minimal charging current of the set charge current value after reaches float voltage.
The TPB4056A implements two indication pins, 
and
, allowing connection to microcontroller or LED to show
device status. With open-drain structure, pin stays low
while input voltage is within operation range, and stays
low during charging state, else pins are high impedance.
The TPB4056A device features thermal foldback function to limit the charge current and protect the device from over junction temperature fault. The TPB4056A device also integrates current monitor, UVLO, OVP function to prevent device from damage.
Features:
· Single-Chip Charger for 1-cell Li-ion or Polymer Battery
· Constant-Current/Constant-Voltage Battery Charge
· Charging
◆ Maximum 1000mA Programmable Charge Current
◆ 10% Charge Current Accuracy
◆ 4.2V/4.35V Charge Float Voltage with 1% Accuracy
· Protection
◆ Wide Input From 4V to 6.8V/10.5V, up to 30V transient
◆ Charging Current Monitor and Thermal Foldback
◆ Power Presence Indication
◆ Soft start for Inrush Current Limitation
· Automatic Battery Recharge
· Programmable minimal charging current
· No external MOSFET, Current Sensor or Diode Required
· Operation Temperature: −40℃~+85℃
· Package options: ESOP-8, DFN2×2, DFN3×2, DFN3×3
Applications:
· Portable Devices, GPS, ePOS, e-cigarette, Walkie-talkie
· Wireless Devices, Bluetooth Headset
· Personal Electronics, Personal Healthcare
· Wearable Devices
TPB4056A application schematic
Product family table
- 【Datasheet】TPB4056A 1A Single Cell Battery Linear Charger with High Input Voltage
- 【Datasheet】TPB4056A 1-A Single Cell Battery Linear Charger with High Input Voltage
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