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MAX1611CSE Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX1611CSE Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 20 page 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 BATT LX BST GND VL CS OTP REF UP DN SHDN SYNC SS CC CSAV MINDAC TOP VIEW MAX1610 SO Digitally Controlled CCFL Backlight Power Supplies ________________________________________________________________ Maxim Integrated Products 1 19-1128; Rev 0; 9/96 EVALUATION KIT AVAILABLE For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800 _______________General Description The MAX1610/MAX1611 are fully integrated, high- efficiency drivers for cold-cathode fluorescent lamps (CCFLs). They operate from a 4.5V to 26V power source. An on-board, high-switching-frequency power MOSFET reduces external component count and mag- netics size. The MAX1610/MAX1611 protect against open or shorted lamps. The CCFL can be driven from an isolated transformer secondary winding to improve efficiency and avoid flicker at dim tube settings. Brightness is adjusted by scaling the lamp current, or by operating with a fixed lamp current and chopping the CCFL on and off at a rate faster than the eye can detect. The MAX1610’s digital inputs increment, decrement, or clear an internal, 5-bit up/down counter, which sets CCFL brightness. The MAX1611 uses a System Management Bus (SMBus) 2-wire serial interface to directly set CCFL brightness. Both devices include micropower shutdown and a linear regulator that elimi- nates the need for a separate logic supply. The digital interface remains active in shutdown, preserving the brightness setting. ________________________Applications Notebook/Laptop Computers Point-of-Sale Terminals Portable Medical Equipment Instrument Displays ____________________________Features ® Direct Digital Control of CCFL Brightness ® Low Supply Current: 3mA Max Operating 20µA Max Shutdown ® Low-Voltage Operation, Down to 4.5V ® Internal 26V, 0.7W Power Switch ® Protection Against Open or Shorted Lamps ® Supports Isolated Transformer Secondary Winding ® SMBus Serial Interface (MAX1611) ® No Flicker at Low Brightness (internal 280Hz current chopping) ® High Power-to-Light Efficiency ® Selectable 290kHz/145kHz Switching Frequency ® Oscillator SYNC Input ® 16-Pin Narrow SO Package 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 BATT LX BST GND VL CS OTP REF SDA SCL SMBSUS SYNC SS CC CSAV MINDAC MAX1611 SO __________________________________________________________Pin Configurations PART MAX1610CSE MAX1611CSE 0°C to +70°C 0°C to +70°C TEMP. RANGE PIN-PACKAGE 16 Narrow SO 16 Narrow SO ______________Ordering Information |
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