Specification	LT1945IMS#PBF

Current - Output	250 mA
Function	Step-Up/Step-Down, Step-Up
Mounting Type	Surface Mount
Number of Outputs	2
Operating Temperature [Max]	85 C
Operating Temperature [Min]	-40 ¯C
Output Configuration	Positive and Negative (Dual Rail)
Output Type	Adjustable
Package / Case	10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
Supplier Device Package	10-MSOP
Synchronous Rectifier	False
Topology	Boost, SEPIC
Voltage - Input (Max) [Max]	15 V
Voltage - Input (Min) [Min]	1.2 V
Voltage - Output (Max)	34 V
Voltage - Output (Min/Fixed)	±1.23V

LT1945 Series

Dual Micropower DC/DC Converter with Positive and Negative Outputs

Part	Voltage - Output (Max)	Operating Temperature [Max]	Operating Temperature [Min]	Output Type	Current - Output	Voltage - Output (Min/Fixed)	Voltage - Input (Min) [Min]	Topology	Function	Output Configuration	Mounting Type	Voltage - Input (Max) [Max]	Number of Outputs	Supplier Device Package	Package / Case
Analog Devices Inc./Maxim Integrated LT1945EMS#PBF	34 V	70 °C	0 °C	Adjustable	250 mA	±1.23V	1.2 V	Boost SEPIC	Step-Up Step-Up/Step-Down	Positive and Negative (Dual Rail)	Surface Mount	15 V	2	10-MSOP	10-TFSOP 10-MSOP (0.118" 3.00mm Width)
Analog Devices Inc./Maxim Integrated LT1945IMS#PBF	34 V	85 C	-40 ¯C	Adjustable	250 mA	±1.23V	1.2 V	Boost SEPIC	Step-Up Step-Up/Step-Down	Positive and Negative (Dual Rail)	Surface Mount	15 V	2	10-MSOP	10-TFSOP 10-MSOP (0.118" 3.00mm Width)
Analog Devices Inc./Maxim Integrated LT1945EMS#TRPBF	34 V	70 °C	0 °C	Adjustable	250 mA	±1.23V	1.2 V	Boost SEPIC	Step-Up Step-Up/Step-Down	Positive and Negative (Dual Rail)	Surface Mount	15 V	2	10-MSOP	10-TFSOP 10-MSOP (0.118" 3.00mm Width)
Analog Devices Inc./Maxim Integrated LT1945IMS#TRPBF	34 V	85 C	-40 ¯C	Adjustable	250 mA	±1.23V	1.2 V	Boost SEPIC	Step-Up Step-Up/Step-Down	Positive and Negative (Dual Rail)	Surface Mount	15 V	2	10-MSOP	10-TFSOP 10-MSOP (0.118" 3.00mm Width)

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$	Updated

Digikey	N/A	1539	$ 8.32	1m+

Description

General part information

LT1945 Series

The LT1945 is a dual micropower DC/DC converter in a 10-pin MSOP package. Each converter is designed with a 350mA current limit and an input voltage range of 1.2V to 15V, making the LT1945 ideal for a wide variety of applications. Both converters feature a quiescent current of only 20µA at no load, which further reduces to 0.5µA in shutdown. A current limited, fixed off-time control scheme conserves operating current, resulting in high efficiency over a broad range of load current. The 36V switch allows high voltage outputs up to ±34V to be easily generated without the use of costly transformers. The LT1945’s low off-time of 400ns permits the use of tiny, low profile inductors and capacitors to minimize footprint and cost in space-conscious portable applications.ApplicationsSmall TFT LCD PanelsHandheld ComputersBattery BackupDigital Cameras

Documents

Technical documentation and resources

LT1945IMS#PBF | Datasheet

Datasheet

R365 Reliability Data

Reliability Data