Product Summary
The LD7575PS is a current-mode PWM controller with excellent power-saving operation. The LD7575PS features a highvoltage current source to directly supply the startup current from bulk capacitor and further to provide a lossless startup circuit. The integrated functions such as the leading-edge blanking of the current sensing, internal slope compensation, and the small package provide the users a high efficiency, minimum external component counts, and low cost solution for AC/DC power applications. The applications of the LD7575PS include Switching AC/DC Adapter and Battery Charger, Open Frame Switching Power Supply and LCD Monitor/TV Power.
Parametrics
LD7575PS absolute maximum ratings: (1)Supply Voltage VCC: 30V; (2)High-Voltage Pin, HV: -0.3V~500V; (3)COMP, RT, CS: -0.3 ~7V; (4)Junction Temperature: 150℃; (5)Operating Ambient Temperature: -40℃ to 85℃; (6)Storage Temperature Range: -65℃ to 150℃; (7)Package Thermal Resistance: 160℃/W; (8)Power Dissipation: 400mW; (9)Lead temperature (Soldering, 10sec): 260℃; (10)ESD Voltage Protection, Human Body Model (except HV Pin): 3KV; (11)ESD Voltage Protection, Machine Model: 200V; (12)Gate Output Current: 500mA.
Features
LD7575PS features: (1)High-Voltage (500V) Startup Circuit; (2)Current Mode Control; (3)Non-Audible-Noise Green Mode Control; (4)UVLO (Under Voltage Lockout); (5)LEB (Leading-Edge Blanking) on CS Pin; (6)Programmable Switching Frequency; (7)Internal Slope Compensation; (8)OVP (Over Voltage Protection) on Vcc; (9)OLP (Over Load Protection); (10)500mA Driving Capability.
Diagrams
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LD7575PS |
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LD7522 |
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LD7535 |
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LD7550 |
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LD7552 |
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LD7552BPS |
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LD7575PS |
Other |
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Negotiable |
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