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MAX1540 - Dual Step-Down Controllers

Description

The MAX1540/MAX1541 dual pulse-width modulation (PWM) controllers provide the high efficiency, excellent transient response, and high DC-output accuracy necessary for stepping down high-voltage batteries to generate low-voltage chipset and RAM power supplies in notebook computers.

Features

  • Inductor-Saturation Protection.
  • Accurate Differential Current-Sense Inputs.
  • Dual Ultra-High-Efficiency Quick-PWMs with 100ns Load-Step Response.
  • MAX1540 1.8V/1.2V Fixed or 0.7V to 5.5V Adjustable Output (OUT1) 2.5V/1.5V Fixed or 0.7V to 5.5V Adjustable Output (OUT2) Fixed 5V, 100mA Linear Regulator.
  • MAX1541 External Reference Input (REFIN1) Dynamically Selectable Output Voltage.
  • 0.7V to 5.5V (OUT1) 2.5V/1.8V Fixed or 0.7V to 5.5V Adjustable Ou.

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Other Datasheets by Maxim Integrated (Analog Devices)

Part Number Description
MAX1540A Dual Step-Down Controllers
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MAX1545 Quick-PWM Controllers
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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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19-2861; Rev 2; 1/05 KIT ATION EVALU E L B AVAILA Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator General Description The MAX1540/MAX1541 dual pulse-width modulation (PWM) controllers provide the high efficiency, excellent transient response, and high DC-output accuracy necessary for stepping down high-voltage batteries to generate low-voltage chipset and RAM power supplies in notebook computers. The Maxim proprietary Quick-PWM™ controllers are free running, constant on-time with input feed forward. This configuration provides ultra-fast transient response, wide input-output (I/O) differential range, low supply current, and tight load-regulation characteristics.