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发布者:来自网络 发布时间:2010/1/1 阅读:7329次    关键字: AX3120 MP2307/MP1482
AX3120-2.5A Synchronous buck Converter停产


AX3120-2.5A Synchronous buck Converter DataSheet (2015年7月停产)

GENERAL DESCRIPTION
    AX3120 consists of step-down switching regulator with synchronous PWM converter. These devise include a reference voltage source, oscillation circuit, error amplifier, internal PMOS and NMOS etc.
    AX3120 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%. This converter also contains an error amplifier circuit as well as an enable/soft-start circuit that prevents overshoot at startup. 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 external compensation is easily to system stable.
    With the addition of internal PMOS and NMOS, a coil and capacitors 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.

FEATURES
- 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(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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