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This literature is subject to all applicable copyright laws and is not for resale in any manner.FAN501 Offline DCM / CCM Flyback PWM Controller for Charger Applications April 2014 FAN501 Offline DCM / CCM Flyback PWM Controller for Charger Applications Description Features The advanced PWM controller, FAN501, simplifies WSaver Technology Provides Ultra-Low isolated power supply design that requires CC Standby Power Consumption for Energy Stars regulation of the output. The output current is 5-Star Level (<30 mW) precisely estimated with only the information in the Constant-Current (CC) Control without primary side of the transformer and controlled with an Secondary-Side Feedback Circuitry for internal compensation circuit, removing the output Discontinuous Conduction Mode (DCM) and current-sensing loss and eliminating external CC Continuous Conduction Mode (CCM) control circuitry. With an extremely low operating current (250 A), Burst Mode maximizes light-load Dual-Frequency Function Changes Switching efficiency, allowing conformance to worldwide Frequency (140 kHz / 85 kHz) According to Input Standby Mode efficiency guidelines. Voltage to Maximize Transformer Utilization and Improve Efficiency Compared with a conventional approach using external control circuit in the secondary side for CC High Power Density and High Conversion regulation, the FAN501 can reduce total cost, Efficiency with CCM Operation in Typical 10 W component count, size, and weight while increasing to15 W Compact Charger Applications efficiency, productivity, and system reliability. Frequency Hopping to Reduce EMI Noise Vo High-Voltage Startup Precise Maximum Output Power Limit by CC Regulation through External Resistor Adjustment Maximum Peak-Current-Mode Control with Slope Typical Compensation to Avoid Sub-Harmonic Oscillation Minimum Programmable Over-Temperature Protection with Latch Mode through External NTC Resistor I o V Over-Voltage Protection with Latch Mode S Figure 1. Typical Output V-I Characteristic V Under-Voltage Protection with Auto-Restart S V Over-Voltage-Protection with Auto-Restart DD Available in MLP 4 X 3 Package Applications Battery Chargers for Smart Phones, Feature Phones, and Tablet PCs AC-DC Adapters for Portable Devices or Battery Chargers that Require CV / CC Control Ordering Information Operating Packing Part Number Package Temperature Range Method 10-Lead, MLP, QUAD, JEDEC MO-220 4 mm x 3 mm, FAN501MPX -40 C to +125 C Tape & Reel 0.8 mm Pitch, Single DAP 2014 Fairchild Semiconductor Corporation www.fairchildsemi.com FAN501 Rev. 1.0.0