Description
This highly integrated PWM controller provides several features to enhance the performance of low-power flyback converters. To minimize standby power consumption, a proprietary green-mode function provides off-time modulation to linearly decrease the switching frequency under light-load and zero-load conditions.
Features
 Linearly Decreasing PWM Frequency
 Green Mode Under Light-Load and Zero-Load Conditions
 Constant Voltage (CV) and Constant Current (CC)
 No Secondary Feedback
 Low Startup Current: 8μA
 Low Operating Current: 3.6mA
 Leading-Edge Blanking
 Constant Power Limit
 Universal AC Input Range
 Synchronized Slope Compensation
 140°C OTP Sensor with Hysteresis
 VDDOver-Voltage Clamping
 Cycle-by-Cycle Current Limiting
 Under-Voltage Lockout (UVLO)
 Fixed PWM Frequency with Hopping
 Gate Output Maximum Voltage Clamped at 17V
 Small SSOT-6 Package
Applications
General-purpose, switching mode, power supplies and flyback power converters, such as:
 Battery Chargers for Cellular Phones, Cordless Phones, PDAs, Digital Cameras, Power Tools
 Power Adapters for Ink Jet Printers, Video Game Consoles, Portable Audio Players
 Open-Frame SMPS for TV/DVD Standby and Auxiliary Supplies, Home Appliances, Consumer
Electronics
 Replacement for Linear Transformers and RCC SMPS
 PC 5V Standby Power
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