ML4876CR MICRO-LINEAR [Micro Linear Corporation], ML4876CR Datasheet
ML4876CR
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ML4876CR Summary of contents
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LCD Backlight Lamp Driver with Contrast GENERAL DESCRIPTION The ML4876 is an ideal solution for driving small cold cathode fluorescent tubes (CCFL) used in liquid crystal display (LCD) backlight applications. It provides the dimming ballast control and the contrast control ...
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ML4876 PIN CONFIGURATION PIN DESCRIPTION PIN NAME DESCRIPTION 1 FEA OUT Output of flyback (contrast) error amplifier 2 FEA– Negative input of flyback (contrast) error amplifier 3 FEA+ Positive input of flyback (contrast) error amplifier Logic input. ...
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ABSOLUTE MAXIMUM RATINGS Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. Supply Current (I ) ............................................... 75mA CC Output Current, ...
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ML4876 ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER FLYBACK REGULATOR (Continued) Current Limit Comparator Threshold Input Bias Current Propagation Delay Output Drivers Output High - F Gate Output Low - F Gate Rise & Fall Time HIGH VOLTAGE INVERTER Oscillator Nominal Frequency Discharge ...
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ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER SUPPLY VDD Supply Current (No Load) VDD Supply Current VDD Supply Current VREF Output Voltage VREF Load Regulation VREF Line Regulation VREF Line, Load, Temp Note 1: Limits are guaranteed by 100% testing, sampling, or correlation ...
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ML4876 INPUT 5V to 18V CONTRAST D1 25V VOLTAGE –20V MAX. (ADJUSTABLE 25V R12 R2 1. 100k C11 0 200k CONTRAST ADJUST 6 C3 U2-A 1.0 ...
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FUNCTIONAL DESCRIPTION The ML4876 consists of a PWM regulator, a lamp driver/ inverter, a linear regulator, a flyback regulator, and control circuits. This IC, in conjunction with external components, converts a DC battery voltage into the high voltage and high ...
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ML4876 FUNCTIONAL DESCRIPTION CONTRAST CONTROL GENERATOR The contrast voltage generator is a separate regulator in a flyback configuration. In conjunction with the external transformer (T3), MOSFET (Q1), diode (D1), and assorted capacitors and resistors, it provides an adjustable DC output ...
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... ORDERING INFORMATION PART NUMBER ML4876CR (END OF LIFE) ML4876ER (OBSOLETE) © Micro Linear 1998 registered trademark of Micro Linear Corporation. All other trademarks are the property of their respective owners. Products described herein may be covered by one or more of the following U.S. patents: 4,897,611; 4,964,026; 5,027,116; 5,281,862; 5,283,483; 5,418,502; ...