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MAX1579 - Complete Bias and White LED Power Supplies

This page provides the datasheet information for the MAX1579, a member of the MAX1578 Complete Bias and White LED Power Supplies family.

Datasheet Summary

Description

The MAX1578/MAX1579 provide four regulated outputs to meet all the voltage requirements for small activematrix TFT-LCD displays in handheld devices where minimum external components and high efficiency are required.

Features

  • a temperature derating function to avoid overdriving the white LEDs during high ambient temperatures, enabling higher drive current below +42°C. The MAX1578/MAX1579 are available in space-saving 24-lead 4mm x 4mm thin QFN packages. Features.
  • Four Regulators in One Package.
  • Bias Power Using Charge Pumps +5V at 25mA for Source Driver +15V at 100µA for VON -10V at 100µA for VOFF No External Diodes Required Output Sequencing POS, NEG, and MAIN Are Autodischarged During Shutdown.

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Datasheet preview – MAX1579

Datasheet Details

Part number MAX1579
Manufacturer Maxim Integrated Products
File Size 255.69 KB
Description Complete Bias and White LED Power Supplies
Datasheet download datasheet MAX1579 Datasheet
Additional preview pages of the MAX1579 datasheet.
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Full PDF Text Transcription

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19-3359; Rev 0; 8/04 KIT ATION EVALU E L B AVAILA www.DataSheet4U.com Complete Bias and White LED Power Supplies for Small TFT Displays General Description The MAX1578/MAX1579 provide four regulated outputs to meet all the voltage requirements for small activematrix TFT-LCD displays in handheld devices where minimum external components and high efficiency are required. Each device consists of three advanced charge pumps for LCD bias power and a step-up converter for driving up to 8 series white LEDs for backlighting. The input voltage range is from 2.7V to 5.5V. The charge pumps provide fixed +5V, +15V, and -10V for the LCD bias circuits. No external diodes are needed. A high-efficiency, fractional (1.
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