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LT3742 - 2-Phase Step-Down Switching Controller

Description

The LT®3742 is a dual step-down DC/DC switching regulator controller that drives high side N-channel power MOSFETs.

A 500kHz fixed frequency current mode architecture provides fast transient response with simple loop compensation components and cycle-by-cycle current limiting.

Features

  • n Wide Input Voltage Range: 4V to 30V n Wide Output Voltage Range: 0.8V to VIN n Low Shutdown IQ: 20µA n Out-of-Phase Controllers Reduce Required Input Capacitance and Power Supply Induced Noise n 0.8V ±1.5% Voltage Reference n 500kHz Current Mode Fixed Frequency Operation n Internal Boost Converter Provides Bias Rail for N-channel MOSFET Gate Drive n Power Good Voltage Monitor for Each Output n Programmable Soft-Start n 24-Lead 4mm × 4mm × 0.75mm Package.

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Datasheet Details

Part number LT3742
Manufacturer Linear Technology Corporation
File Size 296.71 KB
Description 2-Phase Step-Down Switching Controller
Datasheet download datasheet LT3742 Datasheet

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Full PDF Text Transcription

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Features n Wide Input Voltage Range: 4V to 30V n Wide Output Voltage Range: 0.8V to VIN n Low Shutdown IQ: 20µA n Out-of-Phase Controllers Reduce Required Input Capacitance and Power Supply Induced Noise n 0.8V ±1.5% Voltage Reference n 500kHz Current Mode Fixed Frequency Operation n Internal Boost Converter Provides Bias Rail for N-channel MOSFET Gate Drive n Power Good Voltage Monitor for Each Output n Programmable Soft-Start n 24-Lead 4mm × 4mm × 0.75mm Package Applications n Satellite and Cable TV Set-Top Boxes n Distributed Power Regulation n Automotive Systems n Super Capacitor Charger LT3742 Dual, 2-Phase Step-Down Switching Controller Description The LT®3742 is a dual step-down DC/DC switching regulator controller that drives high side N-channel power MOSFETs.
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