LD7523A中文资料AC-DC控制器 : 隔离式低压启动控制/驱动器数据手册Leadtrend规格书

描述 Description

The LD7523A is a low startup current, current mode PWM controller with green-mode power-saving operation.  The SOP-8/DIP-8 package integrates functions such as the leading- edge blanking of the current sensing, internal slope compensation, line compensation, and several protection features including cycle-by-cycle current limit, OVP, OTP, OLP, and brownout protection. It provides the users a high efficiency, low external component counts solution for AC/DC power applications. 
Furthermore, to satisfy various protection requirements, both latch-mode protection and auto-recoverable protection can be easily achieved by configuring LD7523A on different operation modes.  
The special green-mode control is not only to achieve the low power consumption but also to offer a non-audible-noise operation when the LD7523A is operating under light load or no load condition. 
 

特性 Features

·High-Voltage CMOS Process with Excellent ESD protection
·Very Low Startup Current (< 35μA)
·Current Mode Control
·Non-audible-noise Green Mode Control
·UVLO (Under Voltage Lockout)
·LEB (Leading-Edge Blanking) on CS Pin
·Internal Slope Compensation
·Programmable Line Compensation
·OVP (Over Voltage Protection)
·OLP (Over Load Protection)
·OTP (Over Temperature Protection) through a NTC
·Brownout Protection
·Flexibility on Latch/Auto-Recoverable Protection Mode
·500mA Driving Capability

应用 Application

· Switching AC/DC Adaptor and Battery Charger
· Open Frame Switching Power Supply
· LCD Monitor/TV Power