Part Number: LD7523, LD7523GS, LD7523GN
Function: Smart Green-Mode PWM Controller with Multiple Protections
Package: SOP-8 Pin, DIP-8 Pin Type
Manufacturer: Leadtrend Technology ( http://www.leadtrend.com.tw/ )
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Description
The LD7523 is a low startup current, current mode PWM controller with green-mode power-saving operation. The SOP-8/DIP-8 package integrated functions such as the leading- edge blanking of the current sensing, internal slope compensation, line compensation, and several protection features. The protection functions include cycle-by-cycle current limit, OVP, OLP, and brownout protection. It provides the users a high efficiency, low external component counts solution for AC/DC power applications.
Pinout
Features
1. High-Voltage CMOS Process with Excellent ESD protection
2. Very Low Startup Current (< 35μA)
3. Current Mode Control
4. Non-audible-noise Green Mode Control
5. UVLO (Under Voltage Lockout)
6. LEB (Leading-Edge Blanking) on CS Pin
7. Internal Slope Compensation
8. Programmable Line Compensation
9. OVP (Over Voltage Protection)
10. OLP (Over Load Protection)
11. Brownout Protection
12. Built in OLP De-Latch Timer
13. 500mA Driving Capability
Applications:
1. Switching AC/DC Adaptor and Battery Charger
2. Open Frame Switching Power Supply
3. LCD Monitor/TV Power