Datenblatt-Suchmaschine für elektronische Bauteile |
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FAN102MY Datenblatt(PDF) 1 Page - Fairchild Semiconductor |
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FAN102MY Datenblatt(HTML) 1 Page - Fairchild Semiconductor |
1 / 16 page April 2009 © 2008 Fairchild Semiconductor Corporation www.fairchildsemi.com FAN102 Rev. 1.0.3 FAN102 Primary-Side-Control PWM Controller Features Constant-Voltage (CV) and Constant-Current (CC) Control without Secondary-Feedback Circuitry Green Mode: Frequency Reduction at Light Load Fixed PWM Frequency at 42kHz with Frequency Hopping to Reduce EMI Cable Voltage Drop Compensation in CV Mode 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 Auto- Restart SOP-8 Package Available Applications Battery Chargers for Cellular Phones, Cordless Phones, PDA, Digital Cameras, Power Tools Replaces Linear Transformer and RCC SMPS Offline High Brightness (HB) LED Drivers Description The primary-side PWM controller significantly simplifies power supply design that requires CV and CC regulation capabilities. The FAN102 controls the output voltage and current precisely with the information in the primary side of the power supply, not only removing the output current sensing loss, but eliminating all secondary feedback circuitry. The green-mode function with a low startup current (10µA) maximizes the light-load efficiency so the power supply can meet stringent standby power regulations. Compared with a conventional secondary-side regulation approach, the FAN102 can reduce total cost, component count, size, and weight; while simultaneously increasing efficiency, productivity, and system reliability. A typical output CV/CC characteristic envelope is shown in Figure 1. Figure 1. Typical Output V-I Characteristic Ordering Information Part Number Operating Temperature Range Eco Status Package Packing Method FAN102MY -40°C to +105°C Green 8-Lead, Small Outline Package (SOP-8) Tape & Reel For Fairchild’s definition of Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html. |
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