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LTC1539 - Dual High Efficiency/ Low Noise/ Synchronous Step-Down Switching Regulators

This page provides the datasheet information for the LTC1539, a member of the LTC Dual High Efficiency/ Low Noise/ Synchronous Step-Down Switching Regulators family.

Description

The LTC ®1538-AUX/LTC1539 are dual, synchronous stepdown switching regulator controllers which drive external N-channel power MOSFETs in a phase-lockable fixed frequency architecture.

Features

  • s s s s s s s LTC1538-AUX/LTC1539 Dual High Efficiency, Low Noise, Synchronous Step-Down Switching Regulators.

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Datasheet preview – LTC1539

Datasheet Details

Part number LTC1539
Manufacturer Linear Technology
File Size 451.24 KB
Description Dual High Efficiency/ Low Noise/ Synchronous Step-Down Switching Regulators
Datasheet download datasheet LTC1539 Datasheet
Additional preview pages of the LTC1539 datasheet.

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Full PDF Text Transcription

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FEATURES s s s s s s s LTC1538-AUX/LTC1539 Dual High Efficiency, Low Noise, Synchronous Step-Down Switching Regulators DESCRIPTION The LTC ®1538-AUX/LTC1539 are dual, synchronous stepdown switching regulator controllers which drive external N-channel power MOSFETs in a phase-lockable fixed frequency architecture. The Adaptive PowerTM output stage selectively drives two N-channel MOSFETs at frequencies up to 400kHz while reducing switching losses to maintain high efficiencies at low output currents. An auxiliary 0.5A linear regulator using an external PNP pass device provides a low noise, low dropout voltage source. A secondary winding feedback control pin (SFB1) guarantees regulation regardless of load on the main output by forcing continuous operation. A 5V/20mA regulator, internal 1.
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