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LTC1433 - 450mA/ Low Noise Current Mode Step-Down DC/DC Converters

This page provides the datasheet information for the LTC1433, a member of the LTC 450mA/ Low Noise Current Mode Step-Down DC/DC Converters family.

Datasheet Summary

Description

The LTC®1433/LTC1434 are monolithic pulse width modulated step-down DC/DC converters.

By utilizing current mode switching techniques, they provide excellent AC and DC load and line regulation.

Both devices operate at a fixed frequency with the LTC1434 phase-lockable to an external clock signal.

Features

  • s s s s s s s s s s s s High Efficiency: Up to 93% Constant Frequency Adaptive PowerTM Operation Input Voltage Range: 3V to 13.5V Internal 0.6Ω Power Switch (VIN = 10V) Low Dropout Operation: 100% Duty Cycle Low-Battery Detector Internal Power-On Reset Timer Current Mode Operation for Excellent Line and Load Transient Response Low Quiescent Current: 470µA Shutdown Mode Draws Only 15µA Supply Current ±1% Reference Accuracy Available in 16- and 20-Lead Narrow SSOP U.

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Datasheet preview – LTC1433

Datasheet Details

Part number LTC1433
Manufacturer Linear Technology
File Size 379.38 KB
Description 450mA/ Low Noise Current Mode Step-Down DC/DC Converters
Datasheet download datasheet LTC1433 Datasheet
Additional preview pages of the LTC1433 datasheet.

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Full PDF Text Transcription

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LTC1433/LTC1434 450mA, Low Noise Current Mode Step-Down DC/DC Converters DESCRIPTION The LTC®1433/LTC1434 are monolithic pulse width modulated step-down DC/DC converters. By utilizing current mode switching techniques, they provide excellent AC and DC load and line regulation. Both devices operate at a fixed frequency with the LTC1434 phase-lockable to an external clock signal. Both devices incorporate two internal P-channel power MOSFETs with a parallel combined resistance of 0.6Ω (at a supply of 10V). The Adaptive Power output stage selectively drives one or both of the switches at frequencies up to 700kHz to reduce switching losses and maintain high efficiencies at low output currents. The LTC1433/LTC1434 are capable of supplying up to 450mA of output current and boasts a ± 2.
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