LT3493 Series

1.2A, 750kHz Step-Down Switching Regulator in 2mm × 3mm DFN

Catalog

1.2A, 750kHz Step-Down Switching Regulator in 2mm × 3mm DFN

Part	Voltage - Output (Min/Fixed) [Min]	Output Configuration	Output Type	Supplier Device Package	Frequency - Switching	Voltage - Output (Max) [Max]	Current - Output	Voltage - Input (Max) [Max]	Voltage - Input (Min) [Min]	Synchronous Rectifier	Topology	Package / Case	Number of Outputs	Function	Operating Temperature [Min]	Operating Temperature [Max]	Mounting Type
Analog Devices LT3493IDCB#TRMPBF	0.78 V	Positive	Adjustable	6-DFN (2x3)	750 kHz	34.2 V	1.2 A	36 V	3.6 V		Buck	6-WFDFN Exposed Pad	1	Step-Down	-40 °C	125 ¯C	Surface Mount

Catalog

1.2A, 750kHz Step-Down Switching Regulator in 2mm × 3mm DFN

Key Features

• Wide Input Range: 3.6V to 36V Operating, 40V Maximum

• 1.2A Output Current

• Fixed Frequency Operation: 750kHz

• Output Adjustable Down to 780mV

• Short-Circuit Robust

• Uses Tiny Capacitors and Inductors

• Soft-Start

• Internally Compensated

• Low Shutdown Current: <2μA

• Low VCESATSwitch: 330mV at 1A

• Thermally Enhanced, Low Profile DFN Package

Description

The LT3493 is a current mode PWM step-down DC/DC converter with an internal 1.75A power switch. The wide operating input range of 3.6V to 36V (40V maximum) makes the LT3493 ideal for regulating power from a wide variety of sources, including unregulated wall transformers, 24V industrial supplies and automotive batteries. Its high operating frequency allows the use of tiny, low cost inductors and ceramic capacitors, resulting in low, predictable output ripple.Cycle-by-cycle current limit provides protection against shorted outputs and soft-start eliminates input current surge during start-up. The low current (<2µA) shutdown mode provides output disconnect, enabling easy power management in battery-powered systems.VINRangeLT34933.6V to 36V Operating,40V MaximumLT3493-36.8V to 36V Operating,40V MaximumApplicationsAutomotive Battery RegulationIndustrial Control SuppliesWall Transformer RegulationDistributed Supply RegulationBattery-Powered Equipment