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TD1484, 3.2A 23V 同步 整流降压IC
特点
* 3.2A输出电流
* 4.75V至23V的宽工作输入范围
*集成的130mΩ的功率MOSFET开关
*从0.923V至20V的可调输出
*高达93％的效率
*可编程软启动
*稳定的低ESR陶瓷输出电容器
*固定340KHz频率
*逐周期过流保护
*输入欠压锁定
应用
*分布式电源系统
*网络系统
* FPGA，DSP，ASIC电源
*绿色电子/家电
* N otebook电脑
General Description
The TD1484A is a monolithic pulse-width-modulated (PWM)
synchronous step-down switch mode regulator with two
internal power MOSFETs. It achieves 3.2A continuous output
current over a wide input supply range with excellent load
and line regulation. Current mode operation provides fast
transient response and eases loop stabilization. Fault
condition protection includes cycle-by-cycle current limit and
thermal shutdown.
This device, available in
an SOP8-PP package, provides
a very compact solution with minimal external components.
Features
• 3.2A Output Current
• Wide 4.75V to 20V Operating Input Range
• Integrated 90mΩPower MOSFET Switches
• Output Adjustable from 0.923V to 20V
• Up to 93% Efficiency
• Programmable Soft-Start
• StablewithLowESRCeramic
OutputCapacitors
• Fixed 340KHz Frequency
• Cycle-by-CycleOver Current Protection
• Input Under Voltage Lockout
Applications
• Distributed Power Systems
• Networking Systems
• FPGA, DSP, ASIC Power Supplies
• Green Electronics/ Appliances
• Notebook Computers
