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TP4059 Li-ion Battery Charger IC – SOT23-6 Package, Single Cell, High Efficiency

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Product SKU: INTEG348

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₹ 6 ~~₹ 9~~

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Specification

Description

TP4059 Li-ion Battery Charger IC – SOT23-6 Package, Single Cell, High Efficiency

The TP4059 is a highly efficient, linear Li-ion battery charger IC designed for single-cell 3.7V lithium-ion or lithium-polymer batteries. Housed in a compact SOT23-6 package, it offers a complete USB-compatible charging solution without the need for external MOSFETs, sense resistors, or blocking diodes.

Technical Details

Model: TP4059
Package Type: SOT23-6
Battery Type: Single-cell 3.7V Li-ion / Li-Po
Input Voltage Range: 4V to 8V
Charge Voltage: 4.2V ±1%
Charge Current: Up to 1000mA (programmable)
Charging Method: Trickle → CC → CV
Termination Method: C/10
Recharge Threshold: ~4.05V
Thermal Regulation: Yes
Shutdown Current: < 50μA
Status Output: CHRG (charge status indication)

Features

Complete single-cell Li-ion battery charger in SOT23-6 package
Constant-current / constant-voltage (CC/CV) charging
Programmable charge current up to 1A
No external MOSFET, sense resistor, or diode required
Built-in thermal regulation for safe operation
Automatic recharge when battery voltage drops
C/10 charge termination for full charge detection
Trickle charge for deeply discharged batteries
Charge status indication via output pin
Reverse battery connection protection

Applications

USB Li-ion Battery Chargers: Enable direct charging of single-cell batteries from USB ports without the need for external protection circuitry.

18650 and Single-Cell Battery Packs: Ideal for charging standard 3.7V Li-ion cells like 18650, commonly used in flashlights, vapes, and battery banks.

Wearable Electronics: Compact SOT23-6 package makes it suitable for space-constrained wearable designs such as fitness trackers and smart bands.

Portable Gadgets and Tools: Used in handheld devices like electric screwdrivers, remote controls, or toys requiring safe and efficient charging circuits.