LT3958EUHE#PBF

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Analog Devices

HIGH INPUT VOLTAGE, BOOST, FLYBACK, SEPIC AND INVERTING CONVERTER

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DocumentsR530 Reliability Data Datasheet

LT3958EUHE#PBF

Active

Analog Devices

HIGH INPUT VOLTAGE, BOOST, FLYBACK, SEPIC AND INVERTING CONVERTER

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DocumentsR530 Reliability Data Datasheet

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Technical Specifications

Parameters and characteristics for this part

Specification	LT3958EUHE#PBF

Current - Output	3.3 A
Frequency - Switching [Max]	1 MHz
Frequency - Switching [Min]	100 kHz
Function	Step-Up, Step-Up/Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature [Max]	125 ¯C
Operating Temperature [Min]	-40 °C
Output Configuration	Positive or Negative
Output Type	Adjustable
Package / Case	36-WFQFN, 28 Leads, Exposed Pad
Supplier Device Package	36-QFN (5x6)
Synchronous Rectifier	False
Topology	Cuk, SEPIC, Boost, Flyback
Voltage - Input (Max) [Max]	80 V
Voltage - Input (Min) [Min]	5 V
Voltage - Output (Max) [Max]	84 V
Voltage - Output (Min/Fixed)	1.6 V

LT3958 Series

High Input Voltage, Boost, Flyback, SEPIC and Inverting Converter

Part	Package / Case	Frequency - Switching [Max]	Frequency - Switching [Min]	Output Configuration	Voltage - Input (Max) [Max]	Function	Supplier Device Package	Output Type	Voltage - Output (Min/Fixed)	Current - Output	Topology	Number of Outputs	Mounting Type	Operating Temperature [Min]	Operating Temperature [Max]	Voltage - Output (Max) [Max]	Voltage - Input (Min) [Min]
Analog Devices LT3958IUHE#PBF	36-WFQFN 28 Leads Exposed Pad	1 MHz	100 kHz	Positive or Negative	80 V	Step-Up Step-Up/Step-Down	36-QFN (5x6)	Adjustable	1.6 V	3.3 A	Boost Cuk Flyback SEPIC	1	Surface Mount	-40 °C	125 ¯C	84 V	5 V
Analog Devices LT3958EUHE#PBF	36-WFQFN 28 Leads Exposed Pad	1 MHz	100 kHz	Positive or Negative	80 V	Step-Up Step-Up/Step-Down	36-QFN (5x6)	Adjustable	1.6 V	3.3 A	Boost Cuk Flyback SEPIC	1	Surface Mount	-40 °C	125 ¯C	84 V	5 V
Analog Devices LT3958EUHE#TRPBF	36-WFQFN 28 Leads Exposed Pad	1 MHz	100 kHz	Positive or Negative	80 V	Step-Up Step-Up/Step-Down	36-QFN (5x6)	Adjustable	1.6 V	3.3 A	Boost Cuk Flyback SEPIC	1	Surface Mount	-40 °C	125 ¯C	84 V	5 V

Pricing

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

Distributor	Package	Quantity	$

Digikey	Tube	1	$ 10.48
		10	$ 7.31
		61	$ 5.86
		122	$ 5.47
		305	$ 5.05
		549	$ 4.83
		1037	$ 4.63

Description

General part information

LT3958 Series

The LT3958 is a wide input range, current mode, DC/DC converter which is capable of generating either positive or negative output voltages. It can be configured as either a boost, flyback, SEPIC or inverting converter. It features an internal low side N-channel power MOSFET rated for 84V at 3.3A and driven from an internal regulated 7.2V supply. The fixed frequency, current-mode architecture results in stable operation over a wide range of supply and output voltages.The operating frequency of LT3958 can be set with an external resistor over a 100kHz to 1MHz range, and can be synchronized to an external clock using the SYNC pin. A minimum operating supply voltage of 5V, and a low shutdown quiescent current of less than 1μA, make the LT3958 ideally suited for battery-powered systems.The LT3958 features soft-start and frequency foldback functions to limit inductor current during start-up.ApplicationsAutomotiveTelecomIndustrial