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ML4876, ML4876CS, ML4876ER

Table of contents:
Info of ML4876
Info of ML4876CS
Info of ML4876ER

ML4876, ML4876CS, ML4876ER Selling Leads, Datasheet

MFG:2000 Package Cooled:NULL D/C:ML

ML4876, ML4876CS, ML4876ER Datasheet download

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Part Number: ML4876

MFG: 2000

Package Cooled: NULL

D/C: ML

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ML4876 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 for the LCD display.

By utilizing differential drive the ML4876 can deliver the same light output with significantly less input power compared to existing single ended drive schemes.

Improvements as high as 30% can be realized when using low power lamps and advanced LCD screen housings. This increased light output is achieved because the differential drive configuration is much less sensitive, and therefore less power is wasted in the capacitive parasitics that exist in the backlight housing. An additional benefit of this configuration is an even distribution of light.

ML4876 Maximum Ratings

Supply Current (I_CC) ............................................... 75mA
Output Current, Source or Sink .............................. 250mA
Voltage on HVDD ........................................................ 20V
Current into L RTD ................................................. ±10mA
Transient Voltage on B ON ............................................ 9V
Voltage on Any Other Pin .................. 0.3V to VDD +0.3V
Junction Temperature ............................................... 150
Storage Temperature Range ..................... 65 to 150
Lead Temperature (Soldering 10 sec.) ..................... 260
Thermal Resistance (q_JA) Plastic SSOP ................ 100/W

ML4876 Features

` Backlight lamp driver with differential drive
` Up to 30% lower power for same light output
` Low standby current (< 10A)
` Improved efficiency (»95%)
` Allows all N-channel MOSFET drive
` Low switching losses
` Resonant threshold detection
` Buck regulator uses synchronous rectification

ML4876 Connection Diagram

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