Description

The LT1511CSW is a current mode PWM battery charger designed to provide a simple and efficient solution for fast charging modern rechargeable batteries. It is compatible with lithium-ion (Li-Ion), nickel-metal-hydride (NiMH), and nickel-cadmium (NiCd) batteries that require constant-current and/or constant-voltage charging.

Specifications and features

● Simple Design: The LT1511CSW is designed to charge NiCd, NiMH, and lithium rechargeable batteries. The charging current can be programmed by resistors or DAC.

● Adapter Current Loop: The charger allows the maximum possible charging current during computer use.

● Precision 0.5% Accuracy: The LT1511CSW ensures high accuracy for voltage mode charging.

● High Efficiency Current Mode PWM: The charger utilizes a 4A internal switch for efficient performance.

● Adjustable Undervoltage Lockout: The charger features an adjustable undervoltage lockout.

● Automatic Shutdown: The charger automatically shuts down when the AC adapter is removed.

● Low Reverse Battery Drain Current: The LT1511CSW has a low reverse battery drain current of 3µA.

● Charging Current Sensing: The charging current sensing can be done at either terminal of the battery.

● Charging Current Soft-Start: The charger incorporates a soft-start feature for the charging current.

● Shutdown Control: The LT1511CSW can be controlled for shutdown purposes.

Application Scenarios

● Chargers: The LT1511CSW is suitable for chargers for NiCd, NiMH, lead-acid, and lithium rechargeable batteries.

● Switching Regulators: It can be used in switching regulators with precision current limit.

Comparison