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LTC3892 - 2-Phase Synchronous Step-Down DC/DC Controller

Description

The LTC®3892/LTC3892-1/LTC3892-2 is a high performance dual step-down DC/DC switching regulator controller that drives all N-channel synchronous power MOSFET stages.

Power loss and noise are minimized by operating the two controller output stages out-of-phase.

Features

  • nn Wide VIN Range: 4.5V to 60V (65V Abs Max) nn Wide Output Voltage Range: 0.8V ≤ VOUT ≤ 99%.
  • VIN nn Adjustable Gate Drive Level 5V to 10V (OPTI-DRIVE) nn No External Bootstrap Diodes Required nn Low Operating IQ: 29μA (One Channel On) nn Selectable Gate Drive UVLO Thresholds nn Out-of-Phase Operation Reduces Required Input Capacitance and Power Supply Induced Noise nn Phase-Lockable Frequency: 75kHz to 850kHz nn Selectable Continuous, Pulse Skipping or Low Ripple Burst Mode® Operation.

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Datasheet preview – LTC3892

Datasheet Details

Part number LTC3892
Manufacturer Linear Technology
File Size 1.31 MB
Description 2-Phase Synchronous Step-Down DC/DC Controller
Datasheet download datasheet LTC3892 Datasheet
Additional preview pages of the LTC3892 datasheet.

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Full PDF Text Transcription

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FEATURES nn Wide VIN Range: 4.5V to 60V (65V Abs Max) nn Wide Output Voltage Range: 0.8V ≤ VOUT ≤ 99% • VIN nn Adjustable Gate Drive Level 5V to 10V (OPTI-DRIVE) nn No External Bootstrap Diodes Required nn Low Operating IQ: 29μA (One Channel On) nn Selectable Gate Drive UVLO Thresholds nn Out-of-Phase Operation Reduces Required Input Capacitance and Power Supply Induced Noise nn Phase-Lockable Frequency: 75kHz to 850kHz nn Selectable Continuous, Pulse Skipping or Low Ripple Burst Mode® Operation at Light Loads nn Selectable Current Limit (LTC3892/LTC3892-2) nn Very Low Dropout Operation: 99% Duty Cycle nn Power Good Output Voltage Monitors (LTC3892/LTC3892-2) nn Low Shutdown IQ: 3.
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