Description
This highly integrated PWM controller, FAN100, provides several features to enhance the performance of low-power flyback converters. The proprietary topology enables simplified circuit design for battery charger applications. A low-cost, smaller, and lighter charger results when compared to a conventional design or a linear transformer. The startup current is only 10µA, which allows use of large startup resistance for further power saving.

Features
• Constant-Voltage (CV) and Constant-current (CC) Control without Secondary-feedback Circuitry
• Green Mode PWM Frequency Linearly Decreasing
• Fixed PWM Frequency at 42kHz with Frequency Hopping to Solve EMI Problem
• Low Startup Current: 10μA
• Low Operating Current: 3.5mA
• Peak-Current-Mode Control in CV Mode
• Cycle-by-Cycle Current Limiting
• VDD Over-Voltage Protection with Auto-Restart
• VDD Under-Voltage Lockout (UVLO)
• Gate Output Maximum Voltage Clamped at 18V
• Fixed Over-temperature Protection with Latch
• SOP-8 Package Available

Applications
• Battery chargers for cellular phones, cordless phones, PDA, digital cameras, power tools
• Replaces linear transformer and RCC SMPS