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MAX1530 - Multiple-Output Power-Supply Controllers

General Description

The MAX1530/MAX1531 multiple-output power-supply controllers generate all the supply rails for thin-film transistor (TFT) liquid-crystal display (LCD) monitors.

Both devices include a high-efficiency, fixed-frequency, step-down regulator.

Key Features

  • o 4.5V to 28V Input Voltage Range o 250kHz/500kHz Current-Mode Step-Down Converter Small Inductor/Capacitors No Sense Resistor o Three Positive Linear Regulator Controllers One Positive and One Negative Additional Controller (MAX1531) Small Input and Output Capacitors o Timed Reset Output o Uncommitted Overcurrent Protection (MAX1531) o Soft-Start for All Regulators o Programmable Input Undervoltage Comparator o Programmable Startup Sequencing MAX1530/MAX1531 Minimal Operating Circuit VP VIN V.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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www.DataSheet4U.com 19-2866; Rev 0; 5/03 Multiple-Output Power-Supply Controllers for LCD Monitors General Description The MAX1530/MAX1531 multiple-output power-supply controllers generate all the supply rails for thin-film transistor (TFT) liquid-crystal display (LCD) monitors. Both devices include a high-efficiency, fixed-frequency, step-down regulator. The low-cost, all N-channel, synchronous topology enables operation with efficiency as high as 93%. High-frequency operation allows the use of small inductors and capacitors, resulting in a compact solution. The MAX1530 includes three linear regulator controllers and the MAX1531 includes five linear regulator controllers for supplying logic and LCD bias voltages. A programmable startup sequence enables easy control of the regulators.