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MAX1965 - Tracking/Sequencing Triple/Quintuple Power-Supply Controllers

Download the MAX1965 datasheet PDF. This datasheet also covers the MAX1964 variant, as both devices belong to the same tracking/sequencing triple/quintuple power-supply controllers family and are provided as variant models within a single manufacturer datasheet.

General Description

The MAX1964/MAX1965 power-supply controllers are designed to address cost-sensitive applications demanding voltage sequencing/tracking, such as cable modem consumer premise equipment (CPE), xDSL CPE, and set-top boxes.

Key Features

  • voltage sequencing and the MAX1965 features voltage tracking. Both controllers provide a powergood output that monitors all of the output voltages. o 4.5V to 28V Input Voltage Range o Master DC-DC Step-Down Converter: Preset 3.3V or Adjustable (1.236V to 0.75 x VIN) Output Voltage Fixed Frequency (200kHz) PWM Controller No Current-Sense Resistor Adjustable Current Limit 95% Efficient Soft-Start o Two (MAX1964)/Four (MAX1965) Analog Gain Blocks: Positive Analog Blocks Drive Low-Cost PNP Pass Tran.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (MAX1964_MaximIntegratedProducts.pdf) that lists specifications for multiple related part numbers.

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.

View original datasheet text
19-2084; Rev 0; 7/01 Tracking/Sequencing Triple/Quintuple Power-Supply Controllers General Description The MAX1964/MAX1965 power-supply controllers are designed to address cost-sensitive applications demanding voltage sequencing/tracking, such as cable modem consumer premise equipment (CPE), xDSL CPE, and set-top boxes. Operating off a low-cost, unregulated DC supply (such as a wall adapter output), the MAX1964 generates three positive outputs and the MAX1965 generates four positive outputs and one negative output to provide an inexpensive system power supply. The MAX1964 includes a current-mode synchronous step-down controller and two positive regulator gain blocks. The MAX1965 has one additional positive gain block and one negative regulator gain block.