LTC4002EDD-4.2#PBF - 

制造商：

LINEAR TECHNOLOGY LINEAR TECHNOLOGY

制造商产品编号：

LTC4002EDD-4.2#PBF

仓库库存编号：

1648025

技术数据表：

(EN)

The LTC4002EDD-4.2#PBF is a complete Battery Charger Controller for 4.2V cell Li-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. When the input supply is removed, the LTC4002 automatically enters a low current sleep mode, dropping the battery drain current to 10μA. An internal comparator detects the near end-of-charge condition while an internal timer sets the total charge time and terminates the charge cycle. After the charge cycle ends, if the battery voltage drops below 4.05V per cell, a new charge cycle will automatically begin.

• 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