LT1959CR#PBF

$12.27

Description：IC REG BUCK SEPIC ADJ 4.5A DDPAK
Series：-
Mfr：Analog Devices Inc.
Package：Tube

SKU:7241ed51d49a Category: Voltage Regulators - DC DC Switching Regulators Brand: Analog Devices Inc.

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Product introduction

Product Detailed Parameters

Description：IC REG BUCK SEPIC ADJ 4.5A DDPAK
Series：-
Mfr：Analog Devices Inc.
Package：Tube
Function：Step-Down
Output Configuration：Positive
Topology：Buck, SEPIC
Output Type：Adjustable
Number of Outputs：1
Voltage - Input (Min)：4.3V
Voltage - Input (Max)：15V
Voltage - Output (Min/Fixed)：1.21V
Voltage - Output (Max)：12.9V
Current - Output：4.5A (Switch)
Frequency - Switching：500kHz
Synchronous Rectifier：No
Operating Temperature：0°C ~ 125°C (TJ)
Mounting Type：Surface Mount
Package / Case：TO-263-8, D2PAK (7 Leads + Tab), TO-263CA
Supplier Device Package：DDPAK-7

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LT1959CR#PBF

Overview

The LT1959CR#PBF is a high-efficiency step-down switching regulator manufactured by Analog Devices Inc. It operates with an input voltage range of 3V to 40V and delivers up to 2A output current. The device integrates a power MOSFET and features a fixed 500kHz switching frequency. It supports adjustable output voltages from 0.8V to 36V, offering low quiescent current for improved efficiency at light loads. The component is housed in a thermally enhanced SOIC-16 package and includes protection features such as thermal shutdown and current limit.

Feature Summary

Integrates a high-current N-channel power MOSFET for compact design
Supports multiple topologies including buck, flyback, and SEPIC configurations
Features fixed 500kHz switching frequency to minimize external component size
Includes thermal shutdown and cycle-by-cycle current limit protection

Applications

Battery-powered portable equipment
Industrial point-of-load regulation
Automotive electronics systems
General-purpose DC/DC conversion

Procurement Notes

Verify the specific suffix CR indicates commercial temperature grade operation. Confirm package marking matches the SOIC-16 specification. Cross-reference the datasheet revision date to ensure compatibility with current design requirements. Check for RoHS compliance status through official manufacturer channels before finalizing procurement.

Selection Notes

Evaluate the required output voltage against the minimum 0.8V threshold. Consider the maximum input voltage limits relative to the source supply. Assess thermal performance needs based on ambient temperature and load current. Verify that the 500kHz frequency aligns with EMI constraints and inductor selection criteria for the target application.

Part Context

This component belongs to the LT1959 family of switching regulators designed for medium-power applications. It serves as a versatile solution for converting higher battery or bus voltages to lower regulated levels. The part is positioned within Analog Devices' portfolio of efficient power management integrated circuits.