TP4059

TP4059 is a complete single lithium ion battery charger, with battery positive and negative reverse connection protection reverse connection, with a larger 600mA charging current, more stable current consistency. Its constant current/constant voltage linear control, SOT package and low number of external components make TP4059 an ideal choice for portable applications. TP4059 can be suitable for USB power and adapter power work. External detection resistors and isolation diodes are not required due to the internal PMOSFET architecture and anti-reverse charging circuit. Thermal feedback can automatically adjust the charging current to limit the chip temperature during high-power operation or high ambient temperature conditions. The full voltage is fixed at 4.2V, while the charging current can be set externally via a resistor. When the battery reaches 4.2V, the charging current drops to 1/10 of the set value, and the TP4059 will automatically stop charging. When the input voltage (AC adapter or USB power supply) is removed, the TP4059 automatically enters a low current state with the battery leakage current below 2uA. Other features of the TP4059 include a charging current monitor, undervoltage latching, automatic recharging, and two status pins to indicate the end of charging and input voltage access

Applications

• Miniature lithium battery
• Cellular phone、PAD、MP3 player

Key features

• Lithium battery reverse connection protection
• Programmable Charge Current 600mA
• Trickle, constant-current and constant-voltage control
• Preset Charge Voltage with 1% Accuracy
• Highest input can be up to 9V
• Automatic Recharge
• Available in 6-Lead SOT-23 Package
• Two Charge Status Output Pins
• C/10 Charge Termination For Single Cell titanic acid Lithium-Ion Batteries