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发布者:来自网络 发布时间:2010/1/2 阅读:4863次    关键字: AX3122
AX3122-5A Synchronous buck Converter停产


AX3122-5A Synchronous buck Converter DataSheet (2015年7月停产)

GENERAL DESCRIPTION
    AX3122 consists of step-down switching regulator with synchronous PWM converter. These devise include a reference voltage source, oscillation circuit, error amplifier, internal PMOS and external NMOS etc.
    AX3122 provides 5A high current, 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 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 external compensation is easily to system stable.
    With the addition of internal PMOS, external NMOS, a coil and capacitors externally,these ICs can function as step-down switching regulators. The device serve 5A high power supply system, the external NMOS can reduce IC temperature and promote system efficiency for heavy load. Since this converter can accommodate an input voltage up to 23V.

FEATURES
- Input voltage:4.5V to 23V
- Output voltage:VFB to VCC
- Duty ratio:0% to 100% PWM control
- Oscillation frequency:250KHz typ.
- Current Limit (CL).
- Thermal Shutdown function.
- Short Circuit Protect (SCP).
- Built-in internal P-channel MOS and drive external N-channel MOS.
- SOP-8L with Exposed Pad Pb-Free package.

AX3120(2.5A)/AX3121(3.5A)/AX3122(5A)同步整流降压IC

          基本特性:4.5~23V输入电压;2.5A~5A工作电流;无需外接肖特基二极管;0~100%占空比范围;过电流/过温度保护;短路保护/软启动;带EN开关脚位;集成低内阻P+N开关管;0.6V参考电压'SOP-8加散热PAD封装;适用于网络设备及其他高效电源转换应用.
Input voltage:4.5V to 23V
Output voltage:VFB to Vcc
Duty ratio:0% to 100% PWM control
Oscillation frequency:250KHz typ.
Enable/Soft-Start and Current Limit (CL).
Thermal Shutdown function.
Short Circuit Protect (SCP).
Built-in internal SW P-channel and N-channel MOS.
SOP-8L with Exposed Pad Pb-Free package.
>>> AX3120 Data Sheet:  
>>> AX3121 Data Sheet:  
>>> AX3122 Data Sheet:
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