深圳市四海恒通科技有限公司 （非本站正式会员）

AX2005/A  3A/2APWM Control LED Driver with internal Switch

性能描述：

The AX2005/A is a high voltage step-down converter designed for driving up to 10 series white LEDs from a 40V system input. The total LED driving current up to 3A (AX2005) / 2A(AX2005A), which is measured through an external current sense resistor. Its low 200mV feedback voltage reduces power loss and improves efficiency. The OVP pin monitors the output voltage and turns off the converter if an over-voltage condition is present due to an open circuit condition. The AX2005 includes current limit, short circuit protection and thermal shutdown protection preventing damage.

AX2005/A provides high power, high efficiency, and excellent transient characteristics. The PWM control circuit is able to the duty ratio linearly from 0 up to 100%. Since this converter can accommodate an input voltage up to 40V, it is also suitable for the operation via an AC adapter. 

特点：

n   输入电压：8V to 40V

n   输出电压：38V

n   应用于LED背光和大功率LED

n   占空比：0% to 100% PWM control

n  驱动电流：

                          AX2005: Output current up to 3A

                          AX2005A: Output current up to 2A

n   使能端开/关功能与软启动时间控制

n   过热保护和短路保护

n   过压保护

n   内置开关P沟道MOS

n   SOP-8L-EP无铅封装