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MAX746 - High-Efficiency / PWM / Step-Down / N-Channel DC-DC Controller

General Description

The MAX746 is a high-efficiency, high-current, step-down DC-DC power-supply controller that drives external N-channel FETs.

It provides 93% to 96% efficiency from a 6V supply voltage with load currents ranging from 50mA up to 3A.

Key Features

  • a 2V ±1.5% reference, a comparator for low-battery detection or level translating, and soft-start and shutdown capability. The MAX747.
  • discussed in a separate data sheet.
  • functions similarly to the MAX746, but drives P-channel logic level FETs. ____________________________Features o 93% to 96% Efficiency for 50mA to 3A Output Currents o 4V to 15V Input Voltage Range o Low 950µA Supply Current o 1.4µA Shutdown Current o Drives External N-Channel FETs o Fixed-Frequency Current-Mode.

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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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19-0192; Rev 1; 11/93 High-Efficiency, PWM, Step-Down, N-Channel DC-DC Controller _______________General Description The MAX746 is a high-efficiency, high-current, step-down DC-DC power-supply controller that drives external N-channel FETs. It provides 93% to 96% efficiency from a 6V supply voltage with load currents ranging from 50mA up to 3A. It uses a pulse-width-modulating (PWM) current-mode control scheme to provide precise output regulation and low output noise. The MAX746's 4V to 15V input voltage range, fixed 5V/adjustable (Dual-ModeTM) output, and adjustable current limit make this device ideal for a wide range of applications.