DESCRIPTION
The LT®1511 current mode PWM battery charger is the simplest, most efficient solution to fast charge modern rechargeable batteries including lithium-ion (Li-Ion), nickel-metal-hydride (NiMH) and nickel-cadmium (NiCd) that require constant-current and/or constant-voltage charging.

FEATURES
■ Simple Design to Charge NiCd, NiMH and Lithium
   Rechargeable Batteries—Charging Current
   Programmed by Resistors or DAC
■ Adapter Current Loop Allows Maximum Possible
   Charging Current During Computer Use
■ Precision 0.5% Accuracy for Voltage Mode Charging
■ High Efficiency Current Mode PWM with 4A Internal
   Switch
■ 5% Charging Current Accuracy
■ Adjustable Undervoltage Lockout
■ Automatic Shutdown When AC Adapter is Removed
■ Low Reverse Battery Drain Current: 3µA
■ Current Sensing Can Be at Either Terminal of the Battery
■ Charging Current Soft-Start
■ Shutdown Control

APPLICATIONS
■ Chargers for NiCd, NiMH, Lead-Acid, Lithium
   Rechargeable Batteries
■ Switching Regulators with Precision Current Limit