General Dcription
LD7532 is specifically digned for a low cost system by integrating in a SOT-26 package many funions, proteions, and EMI-improved solution which usually need a lot of extra components or circuits on a system dign.
Furthermore, pin latch-off funion triggered by a high voltage above 3.1V provid power circuit digners to easily deal with proteion schem, such as OVP and OTP, and to minimize component cost and developing time.
In order to satisfy different digns, the OVP trig level is adjustable by user adding a Zener diode from VCC pin to pin.
Featur
• High-Voltage CMOS Procs with D proteion
• Very Low Startup Current (<20uA)
• Current Mode Control
• Non-audible-noise Green Mode Control
• UVLO (Under Voltage Lockout) on VCC Pin
• LEB (Leading-Edge Blanking) on CS Pin
• Programmable OLP Delay Time
• Internal Slope Compensation
• External OVP Latch-off Proteion
• OLP (Over Load Proteion) Auto-recovery Mode
• External OTP Latch-off Proteion
• 300mA Driving Capability
Applications
• Switching AC/DC Adaptor and Battery Charger
• Open Frame Switching Power Supply
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