FAN7547AM
FAN7547AM Datasheet
FAN7547A LCD Backlight Inverter Drive IC
| Part | Datasheet |
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FAN7547AM |
FAN7547AM (pdf) |
| Related Parts | Information |
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FAN7547AMX |
FAN7547AMX |
| PDF Datasheet Preview |
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| FAN7547A LCD Backlight Inverter Drive IC FAN7547A LCD Backlight Inverter Drive IC February 2007 - Backlight Lamp Ballast and Soft Dimming - Reduced Number of Components - Wide Range of Operating Voltage 6 to 30V - Precision Voltage Reference Reduced to - Low Standby Current Typically 50µA - Soft-Start Function - PWM Control - Analog, Mixed, and PWM Dimming Function - P-Channel MOSFET Drive - Open-Lamp Protections OLP - Shutdown Protections SDP - 14-Pin SOP The FAN7547A provides all control functions for a current-fed, push-pull, self-oscillation type converter and also contains a pulse-width-modulated PWM controller to develop a supply voltage. Typical operating frequency range is from 30kHz to 100kHz, depending on the cold cathode fluorescent lamp CCFL and the transformer's characteristics. 14-SOP Ordering Information Part Number FAN7547AM FAN7547AMX Package 14-SOP Pb-Free Yes Operating Temperature Range Packing Method -25°C ~ +85°C Tube Tape & Reel FAN7547A LCD Backlight Inverter Drive IC Internal Block Diagram OUT Vref VCC S/S RCT SW VZ UVLO 5V 1.3V 0.1V Oscillator Vref 3V Internal Bias Output Driver Comparator1 VZ 2uA 3.7V Comparator3 40uA Comparator2 Buffer Amplifier VCC1 SDP OSC COMP FB 120uA Comparator4 Vref Comparator5 Vref Dimming Control and Mode Selection Block Analog Mixed 2V Comparator6 50kΩ Vms 50kΩ Full Lighting when VDS = 3V Figure Functional Block Diagram of FAN7547A 2005 Fairchild Semiconductor Corporation FAN7547A LCD Backlight Inverter Drive IC Pin Configuration OUT VCC1 VCC OSC 11 |
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