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发布者:微桥AX3116 发布时间:2011-1-21 阅读:4650次    关键字: AXELITE 亚瑟莱特 DC-DC 微桥 AX3116
AX3116-PWM Control 5A Step-Down Converter


AX3116-PWM Control 5A Step-Down Converter DataSheet

GENERAL DESCRIPTION
    AX3116 consists of step-down switching regulator with PWM control. These deviseinclude a reference voltage source, oscillation circuit, error amplifier, internal PMOS and etc.
    AX3116 provides low-ripple power, high efficiency, and excellent transient characteristics. The PWM control circuit is able to the duty ratio linearly form 0 up to 100%. An enable function, an over current protect function and short circuit protect function are built inside,and when OCP or SCP happens, the operation frequency will be reduced. Also, an internalcompensation block is built in to minimum external component count.
    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 features as low current consumption. Since this converter can accommodate an input voltage up to 23V, it is also suitable for the operation via an AC adapter.
 
FEATURES
- Input voltage£º4.5V to 23V
- Output voltage£º0.8V to VCC
- Duty ratio£º0% to 100% PWM control
- Oscillation frequency£º330KHz typ.
- Current Limit (CL), Enable function.
- External Soft-Start function.
- Thermal Shutdown function.
- Short Circuit Protect (SCP).
- Built-in internal SW P-channel MOS.
- SOP-8L with Exposed Pad Pb-Free package.
 
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