ADI LTC4002ES8-4.2#PBF

锂离子-40°C ~ 85°C（TA）

Overview

The LTC®4002 is a complete battery charger controller for one (4.2V) or two (8.4V) cell lithium-ion batteries. With a 500kHz switching frequency, the LTC4002 provides a small, simple and efficient solution to fast charge Li-Ion batteries from a wide range of supply voltages. An external sense resistor sets the charge current with ±5% accuracy. An internal resistor divider and precision reference set the final float voltage to 4.2V per cell with ±1% accuracy.

■ Wide Input Supply Range: 4.7V to 22V – 4.2 Version 8.9V to 22V – 8.4 Version■ High Efficiency Current Mode PWM Controller with 500kHz Switching Frequency■ ±1% Charge Voltage Accuracy■ End-of-Charge Current Detection Output■ 3 Hour Charge Termination Timer■ Constant Switching Frequency for Minimum Noise■ ±5% Charge Current Accuracy■ Low 10µA Reverse Battery Drain Current■ Automatic Battery Recharge■ Automatic Shutdown When Input Supply is Removed■ Automatic Trickle Charging of Low Voltage Batteries■ Battery Temperature Sensing and Charge Qualification■ Stable with Ceramic Output Capacitor■ 8-Lead SO and 10-Lead DFN Packages

Features

Tube Package
Lithium Ion Battery Chemistry
1 Number of Cells
Timer Programmable Features
4.2V Battery Pack Voltage
22V Voltage - Supply (Max)
Surface Mount Mounting Type