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FAN6753 データシート(PDF) 1 Page - Fairchild Semiconductor |
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FAN6753 データシート(HTML) 1 Page - Fairchild Semiconductor |
1 / 12 page February 2011 © 2009 Fairchild Semiconductor Corporation www.fairchildsemi.com FAN6753 • Rev. 1.0.3 FAN6753 Highly Integrated Green-Mode PWM Controller Features High-Voltage Startup Low Operating Current: 2.7mA Adaptive Decreasing PWM Frequency to 22KHz Built-in Full-Range Frequency Hopping to Reduce EMI Emission Fixed PWM Frequency: 65KHz Peak-Current-Mode Control Cycle-by-Cycle Current Limiting Leading-Edge Blanking (LEB) Synchronized Slope Compensation Internal Auto-Recovery Open-Loop Protection GATE Output Maximum Voltage Clamp: 18V V DD Under-Voltage Lockout (UVLO) V DD Over-Voltage Protection (OVP), Auto Recovery / Latch for Option Internal Auto-Recovery Sense Short-Circuit Protection for Option Constant Power Limit (Full AC Input Range) Internal OTP Sensor with Hysteresis Built-in 5ms Soft-Start Function Built-in LATCH Pin Pull HIGH (> 5.2V) Latch Function Applications General-purpose switch-mode power supplies and flyback power converters, including: Power Adapters Open-Frame SMPS Description The highly integrated FAN6753 PWM controller provides several features to enhance the performance of flyback converters. To minimize standby power consumption, a proprietary adaptive green-mode function provides frequency modulation at light-load conditions. To avoid acoustic- noise problems, the minimum PWM frequency is set above 22KHz. This green-mode function enables the power supply to meet international power conservation requirements. With the internal high-voltage startup circuitry, the power loss due to bleeding resistors is also eliminated. To further reduce power consumption, FAN6753 is manufactured using the BiCMOS process, which allows an operating current of only 2.7mA. FAN6753 integrates a full-range frequency-hopping function internally that helps reduce EMI emission of a power supply with minimum line filters. Its built-in synchronized slope compensation achieves stable peak- current-mode control. The proprietary internal line compensation ensures constant output power limit over a wide AC input voltage range, from 90VAC to 264VAC. FAN6753 provides many protection functions. In addition to cycle-by-cycle current limiting, the internal open-loop protection circuit ensures safety should an open-loop or output short-circuit failure occur. PWM output is disabled until VDD drops below the UVLO lower limit, when the controller starts up again. As long as VDD exceeds ~26V, the internal OVP circuit is triggered. Available in the 8-pin SOP package. Ordering Information Part Number Operating Temperature Range Package Packing Method FAN6753MY -40 C to +105C 8-Lead, Small Outline Package Tape & Reel |
同様の部品番号 - FAN6753 |
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同様の説明 - FAN6753 |
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