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TP4059
The TP4059 is a complete single-cell lithium-ion battery charger with reverse polarity protection for both positive and negative battery terminals. It features a higher charging current of 600mA and more stable current consistency. It uses constant current/constant voltage linear control. The SOT package and fewer external components make the TP4059 ideal for portable applications. The TP4059 is suitable for USB power and adapter power operation. The TP4059 uses an internal PMOSFET architecture, plus a reverse charge protection circuit, so no external detection resistors and isolation diodes are needed. Thermal feedback automatically adjusts 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. After the battery reaches 4.2V, the charging current drops to 1/10 of the set value, and the TP4059 automatically terminates charging. When the input voltage (AC adapter or USB power) is removed, the TP4059 automatically enters a low-current state, with a battery leakage current of less than 2uA. Other features of the TP4059 include a charging current monitor, undervoltage lockout, and automatic recharging.
Category：
- Product Description
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- Commodity name: TP4059
- 封装: SOT23-6
- 品牌: Topin Microelectronics
The TP4059 is a complete single-cell lithium-ion battery charger with reverse polarity protection for both positive and negative battery terminals. It features a higher charging current of 600mA and more stable current consistency. It uses constant current/constant voltage linear control. The SOT package and fewer external components make the TP4059 ideal for portable applications. The TP4059 is suitable for USB power and adapter power operation. The TP4059 uses an internal PMOSFET architecture, plus a reverse charge protection circuit, so no external detection resistors and isolation diodes are needed. Thermal feedback automatically adjusts 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. After the battery reaches 4.2V, the charging current drops to 1/10 of the set value, and the TP4059 automatically terminates charging. When the input voltage (AC adapter or USB power) is removed, the TP4059 automatically enters a low-current state, with a battery leakage current of less than 2uA. Other features of the TP4059 include a charging current monitor, undervoltage lockout, and automatic recharging.
Reverse connection protection for lithium battery positive and negative polesProgrammable charging current 600mANo MOSFET, detection resistors, or isolation diodes requiredFor single-cell lithium-ion batteriesConstant current/constant voltage operation with thermal regulation that maximizes charge rate without overheating riskConstant current/constant voltage operation, with thermal regulation to maximize charging speed without overheating riskCharges single-cell lithium-ion batteries directly from a USB port4.2V preset charging voltage with ±1% accuracyInput voltage up to 9VAutomatic recharging2 open-drain output pins for charging statusC/10 charge termination145uA supply current in standby mode2.9V trickle charger versionSoft start limits inrush current6-pin SOT23-6 package
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