深圳市四海恒通科技有限公司 （非本站正式会员）

AX3112  3A PWM 控制降压型转换器

性能描述：

      AX3112 consists of step-down switching regulator with PWM control. The device includes a reference voltage source, oscillation circuit, error amplifier, internal PMOS and etc.

      AX3112 provides low-ripple power, high efficiency, and excellent transient characteristics. The PWM control circuit is able to the duty ratio linearly forms 0 up to 100%. With the addition of an internal P-channel Power MOS, a coil, capacitors, and a diode connected externally, these ICs can function as step-down switching regulators. They serve as ideal power supply units for portable devices when coupled with the SOP-8L-EP package, providing such outstanding  as low current consumption. Since this converter can accommodate an input voltage up to 40V, it is also suitable for the operation via an AC adapter.

特点   

l  输入电压范围：8V to 40V

l  输出电压范围：3.3V to 38V

l  占空系数：0% to 100% PWM control

l  固定频率：100K/350 KHz

l  Enable and auto restart function.

l  过热保护，内置过压保护

l  短路保护

l  内置开关P沟道MOS

l  SOP-8L-EP 无铅封装