LT1939EDD#PBF

Analog Devices Inc.

Part Number: LT1939EDD#PBF

Inventory

Distributor SKU Stock Cost
Mouser Electronics 584-LT1939EDD#PBF 0 $9.39 Buy
Verical Marketplace LT1939EDD#PBF 242 $4.36 Buy
Arrow North American Components LT1939EDD#PBF 22 $7.29 Buy
Analog Devices Inc LT1939EDD#PBF $9.23 Buy
Description

The LT1939 is a current mode PWM step-down DC/DC converter with an internal 2.3A switch. The wide input range of 3V to 25V makes the LT1939 suitable for regulating power from a wide variety of sources, including automotive batteries, industrial supplies and unregulated wall adapters.Resistor-programmable 250kHz to 2.2MHz frequency range and synchronization capability enable optimization between efficiency and external component size. Cycle-by-cycle current limit, frequency foldback and thermal shutdown provide protection against a shorted output. The soft-start feature controls the ramp rate of the output voltage, eliminating input current surge during start-up, and also provides output tracking.The LT1939 contains an internal NPN transistor with feedback control which can be configured as a linear regulator or as a linear regulator controller.The LT1939’s low current shutdown mode (<12μA) enables easy power management in battery-powered systems.Applications Automotive Battery Regulation Industrial Control Wall Transformer Regulation Distributed Power Regulation


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