IT1602数据手册Innochip中文资料规格书

描述 Description

IT1602 is a PWM step-down converter designed to meet maximum 2A constant current for high power LED driving application, with a fixed switching frequency of 310kHz and a wide input supply range of 3.6V~24V. The 0.25V low feedback voltage reduces the power dissipation of the constant current setting resistor so that the high conversion efficiency up to 94% can be achieved. Moreover, a built-in low RDS(ON) power PMOSFET is also included to obtain a low conduction loss under heavy load conditions.

Not only providing excellent line/load regulations, IT1602 also features other functions, such as: external ON/OFF control, cycle-by-cycle current limit, and thermal shutdown protection. With the maximum duty cycle of 100%, IT1602 is also suitable for low drop-out conditions. This device is available in standard SOP-8L package.

　

特性 Features

• 3.6V to 24V Wide Input Voltage Range
• 0.25V Low Feedback Reference Voltage
• 2A Continuous Load Current Capability
• Up to 95% Efficiency
• 310kHz Fixed Switching Frequency
• 1.1mA/0.2uA Supply/Shutdown Current
• Cycle-by-Cycle Current Limit
• 100% Maximum Duty Cycle
• Built-in Low RDS(ON) Power PMOSFET
• Thermal Shutdown
• Standard SOP-8L Package