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FSEZ1317WA Datasheet(PDF) 2 Page - ON Semiconductor |
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FSEZ1317WA Datasheet(HTML) 2 Page - ON Semiconductor |
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2 / 17 page  January 2013 © 2012 Fairchild Semiconductor Corporation www.fairchildsemi.com FSEZ1317WA • Rev. 1.0.2 FSEZ1317WA Primary-Side-Regulation PWM with POWER MOSFET Integrated Features Low Standby Power Under 30 mW High-Voltage Startup Fewest External Component Counts Constant-Voltage (CV) and Constant-Current (CC) Control without Secondary-Feedback Circuitry Green-Mode: Linearly Decreasing PWM Frequency Fixed PWM Frequency at 50 kHz with Frequency Hopping to Solve EMI Problem Cable Compensation in CV Mode 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 15 V Fixed Over-Temperature Protection with Auto Restart Available in the 7-Lead SOP Applications Battery chargers for cellular phones, cordless phones, PDA, digital cameras, power tools, etc. Replaces linear transformers and RCC SMPS Description This third-generation Primary Side Regulation (PSR) and highly integrated PWM controller provides several features to enhance the performance of low-power flyback converters. The proprietary topology, TRUECURRENT ®, of FSEZ1317WA enables precise CC regulation and simplified circuit design for battery- charger applications. A low-cost, smaller, and lighter charger results, as compared to a conventional design or a linear transformer. To minimize standby power consumption, the proprietary green mode provides off-time modulation to linearly decrease PWM frequency under light-load conditions. Green mode assists the power supply in meeting power conservation requirements. By using the FSEZ1317WA, a charger can be implemented with few external components and minimized cost. 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 Package Packing Method FSEZ1317WAMY -40°C to +105°C 7-Lead, Small Outline Package (SOP-7) Tape & Reel |
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