LTC4001EUF#TRPBF

LTC4001 is a 2A Li-Ion battery charger intended for 5V wall adapters. It utilizes a 1.5MHz synchronous buck converter topology to reduce power dissipation during charging. Low power dissipation, an internal MOSFET and sense resistor allow a physically small charger that can be embedded in a wide range of handheld applications. It includes complete charge termination circuitry, automatic recharge and a ±1% 4.2V float voltage. Input short-circuit protection is included so no blocking diode is required. Battery charge current, charge timeout and end-of-charge indication parameters are set with external components. Additional features include shorted cell detection, temperature qualified charging and overvoltage protection. It is widely used in applications such as handheld battery-powered devices, handheld computers, charging docks and cradles, digital cameras, smart phones etc.

• Low power dissipation, automatic recharge
• Remote sensing at battery terminals
• Programmable charge termination timer
• Programmable charge current detection/termination
• Thermistor input for temperature qualified charging
• Compatible with current limited wall adapters
• Supply voltage range is 4V to 5.5V
• Oscillator frequency is 1.5MHz typ at (TA = 25°C. VIN = 5V, VEN = 0V, RPROG = 549 ohm)
• Operating temperature is -40°C to 85°C
• Package style is 16-lead plastic QFN

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party