LT1618 Series

Constant-Current/Constant-Voltage 1.4MHz Step-Up DC/DC Converter

Catalog

Constant-Current/Constant-Voltage 1.4MHz Step-Up DC/DC Converter

Part	Output Configuration	Voltage - Output (Min/Fixed)	Voltage - Output (Max) [Max]	Number of Outputs	Output Type	Package / Case	Mounting Type	Synchronous Rectifier	Current - Output	Frequency - Switching	Function	Topology	Operating Temperature [Max]	Operating Temperature [Min]	Supplier Device Package	Voltage - Input (Max) [Max]	Voltage - Input (Min) [Min]	Package / Case [x]	Package / Case [x]
Analog Devices LT1618EDD#TRPBF	Positive	1.263 V	36 V	1	Adjustable	10-WFDFN Exposed Pad	Surface Mount		1.5 A	1.4 MHz	Step-Up	Boost	70 °C	0 °C	10-DFN (3x3)	18 V	1.6 V
Analog Devices LT1618EMS#PBF	Positive	1.263 V	36 V	1	Adjustable	10-MSOP 10-TFSOP	Surface Mount		1.5 A	1.4 MHz	Step-Up	Boost	70 °C	0 °C	10-MSOP	18 V	1.6 V	3 mm	0.118 in

Catalog

Constant-Current/Constant-Voltage 1.4MHz Step-Up DC/DC Converter

Key Features

• Accurate Input/Output Current Control: ±5% Over Temperature

• Accurate Output Voltage Control: ±1%

• Wide VINRange: 1.6V to 18V

• 1.4MHz Switching Frequency

• High Output Voltage: Up to 35V

• Low VCESATSwitch: 200mV at 1A

• Available in (3mm x 3mm x 0.8mm) 10-Pin DFN and 10-Pin MSOP Packages

Description

The LT1618 step-up DC/DC converter combines a traditional voltage feedback loop and a unique current feedback loop to operate as a constant-current, constant-voltage source. This fixed frequency, current mode switcher operates from a wide input voltage range of 1.6V to 18V, and the high switching frequency of 1.4MHz permits the use of tiny, low profile inductors and capacitors. The current sense voltage is set at 50mV and can be adjusted using the IADJpin.Available in the 10-Pin (3mm x 3mm) Exposed Pad DFN and 10-pin MSOP packages, the LT1618 provides a complete solution for constant-current applications.ApplicationsLED Backlight DriversUSB Powered Boost/SEPIC ConvertersInput Current Limited Boost/SEPIC ConvertersBattery Chargers