Specification	LT3791IFE-1#PBF

Clock Sync	True
Control Features	Enable, Soft Start, Frequency Control
Frequency - Switching [Max]	700 kHz
Frequency - Switching [Min]	200 kHz
Function	Step-Up/Step-Down
Mounting Type	Surface Mount
Number of Outputs	2
Operating Temperature [Max]	125 °C
Operating Temperature [Min]	-40 C
Output Configuration	Positive
Output Phases	2
Output Type	Transistor Driver
Package / Case	38-TFSOP, Exposed Pad
Package / Case	4.4 mm, 0.173 "
Supplier Device Package	38-TSSOP-EP
Synchronous Rectifier	True
Topology	Buck-Boost
Voltage - Supply (Vcc/Vdd) [Max]	60 V
Voltage - Supply (Vcc/Vdd) [Min]	4.7 V

LT3791-1 Series

Part	Output Configuration	Mounting Type	Control Features	Output Type	Operating Temperature [Min]	Operating Temperature [Max]	Package / Case	Package / Case	Supplier Device Package	Output Phases	Number of Outputs	Function	Voltage - Supply (Vcc/Vdd) [Min]	Voltage - Supply (Vcc/Vdd) [Max]	Frequency - Switching [Max]	Frequency - Switching [Min]	Topology
Analog Devices Inc./Maxim Integrated LT3791IFE-1#TRPBF	Positive	Surface Mount	Enable Frequency Control Soft Start	Transistor Driver	-40 C	125 °C	38-TFSOP Exposed Pad	0.173 " 4.4 mm	38-TSSOP-EP	2	2	Step-Up/Step-Down	4.7 V	60 V	700 kHz	200 kHz	Buck-Boost
Analog Devices Inc./Maxim Integrated LT3791IFE-1#PBF	Positive	Surface Mount	Enable Frequency Control Soft Start	Transistor Driver	-40 C	125 °C	38-TFSOP Exposed Pad	0.173 " 4.4 mm	38-TSSOP-EP	2	2	Step-Up/Step-Down	4.7 V	60 V	700 kHz	200 kHz	Buck-Boost
Analog Devices Inc./Maxim Integrated LT3791MPFE-1#TRPBF	Positive	Surface Mount	Enable Frequency Control Soft Start	Transistor Driver	-55 °C	150 °C	38-TFSOP Exposed Pad	0.173 " 4.4 mm	38-TSSOP-EP	2	2	Step-Up/Step-Down	4.7 V	60 V	700 kHz	200 kHz	Buck-Boost
Analog Devices Inc./Maxim Integrated LT3791HFE-1#TRPBF	Positive	Surface Mount	Enable Frequency Control Soft Start	Transistor Driver	-40 °C	150 °C	38-TFSOP Exposed Pad	0.173 " 4.4 mm	38-TSSOP-EP	2	2	Step-Up/Step-Down	4.7 V	60 V	700 kHz	200 kHz	Buck-Boost
Analog Devices Inc./Maxim Integrated LT3791EFE-1#TRPBF	Positive	Surface Mount	Enable Frequency Control Soft Start	Transistor Driver	-40 C	125 °C	38-TFSOP Exposed Pad	0.173 " 4.4 mm	38-TSSOP-EP	2	2	Step-Up/Step-Down	4.7 V	60 V	700 kHz	200 kHz	Buck-Boost
Analog Devices Inc./Maxim Integrated LT3791EFE-1#PBF	Positive	Surface Mount	Enable Frequency Control Soft Start	Transistor Driver	-40 C	125 °C	38-TFSOP Exposed Pad	0.173 " 4.4 mm	38-TSSOP-EP	2	2	Step-Up/Step-Down	4.7 V	60 V	700 kHz	200 kHz	Buck-Boost
Analog Devices Inc./Maxim Integrated LT3791HFE-1#PBF	Positive	Surface Mount	Enable Frequency Control Soft Start	Transistor Driver	-40 °C	150 °C	38-TFSOP Exposed Pad	0.173 " 4.4 mm	38-TSSOP-EP	2	2	Step-Up/Step-Down	4.7 V	60 V	700 kHz	200 kHz	Buck-Boost
Analog Devices Inc./Maxim Integrated LT3791MPFE-1#PBF	Positive	Surface Mount	Enable Frequency Control Soft Start	Transistor Driver	-55 °C	150 °C	38-TFSOP Exposed Pad	0.173 " 4.4 mm	38-TSSOP-EP	2	2	Step-Up/Step-Down	4.7 V	60 V	700 kHz	200 kHz	Buck-Boost

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	387	$ 14.93	1m+

Description

General part information

LT3791-1 Series

The LT3791-1 is a synchronous 4-switch buck-boost voltage/current regulator controller. The controller can regulate output voltage, output current, or input current with input voltages above, below, or equal to the output voltage. The constant-frequency, current mode architecture allows its frequency to be adjusted or synchronized from 200kHz to 700kHz. No top FET refresh switching cycle is needed in buck or boost operation. With 60V input, 60V output capability and seamless transitions between operating regions, the LT3791-1 is ideal for voltage regulator, battery/super-capacitor charger applications in automotive, industrial, telecom, and even battery-powered systems.For new designs we recommend the LT8390: 60V synchronous 4-switch buck-boost controller due to its numerous performance improvements over the LT3791-1.FeaturesLT3791OPEN LED PinLT3791-1Replaces OPEN LED Pin With C/10 Pin Termination FlagApplicationsAutomotive, Telecom, Industrial SystemsHigh Power Battery-Powered System

Documents

Technical documentation and resources

R518 Reliability Data

Reliability Data

LT3791IFE-1#PBF | Datasheet

Datasheet