LTC3779EFE#TRPBF

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Analog Devices Inc./Maxim Integrated

150V VINAND VOUTSYNCHRONOUS 4-SWITCH BUCK-BOOST CONTROLLER

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LTC3779EFE#TRPBF

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Analog Devices Inc./Maxim Integrated

150V VINAND VOUTSYNCHRONOUS 4-SWITCH BUCK-BOOST CONTROLLER

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Description Specifications Series Pricing CAD Documents

Description

General part information

LTC3779 Series

The LTC3779 is a high performance buck-boost switching regulator controller that operates from input voltages above, below or equal to the output voltage. The constant frequency current mode architecture allows a phaselockable frequency of up to 600kHz, while an input/output constant current loop provides support for battery charging.With a wide 4.5V to 150V input and output range and seamless transfers between operating regions, the LTC3779 is ideal for automotive, telecom and batterypowered systems.The LTC3779 features a precision 1.2V reference and power good output indicator. The MODE pin can select between pulse-skipping mode or forced continuous mode of operation. Pulse-skipping mode offers high efficiency at light load while forced continuous mode operates at a constant frequency for noise sensitive applications. The PLLIN pin allows the IC to be synchronized to an external clock. The SS pin ramps the output voltage during start-up. Current foldback limits MOSFET heat dissipation during short-circuit conditions.ApplicationsIndustrial, Automotive, Medical, Military, Avionics

Technical Specifications

Parameters and characteristics for this part

Specification	LTC3779EFE#TRPBF

Clock Sync	No
Control Features	Current Limit, Soft Start, Power Good
Duty Cycle (Max)	90 %
Frequency - Switching (Max)	600 kHz
Frequency - Switching (Min)	50 kHz
Function	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
Output Phases	1
Output Type	Transistor Driver
Package Features	31 Leads, Exposed Pad
Package Length	0.173 in
Package Name	38-TSSOP-EP, 38-TFSOP
Package Width	4.4 mm
Synchronous Rectifier	Yes
Topology	Buck, Boost
Voltage - Supply (Vcc/Vdd) Maximum	150 V
Voltage - Supply (Vcc/Vdd) Minimum	4.5 V

LTC3779 Series

Part	Output Phases	Voltage - Supply (Vcc/Vdd) Maximum	Voltage - Supply (Vcc/Vdd) Minimum	Function	Control Features	Frequency - Switching (Max)	Frequency - Switching (Min)	Output Type	Number of Outputs	Package Length	Package Features	Package Name	Package Width	Duty Cycle (Max)	Mounting Type	Output Configuration	Synchronous Rectifier	Operating Temperature (Min)	Operating Temperature (Max)	Clock Sync	Topology
Analog Devices Inc./Maxim Integrated LTC3779HFE#TRPBF	1	150 V	4.5 V	Step-Down Step-Up	Current Limit Power Good Soft Start	600 kHz	50 kHz	Transistor Driver	1	0.173 in	31 Leads Exposed Pad	38-TFSOP 38-TSSOP-EP	4.4 mm	90 %	Surface Mount	Positive	Yes	-40 °C	150 °C	No	Boost Buck
Analog Devices Inc./Maxim Integrated LTC3779EFE#TRPBF	1	150 V	4.5 V	Step-Down Step-Up	Current Limit Power Good Soft Start	600 kHz	50 kHz	Transistor Driver	1	0.173 in	31 Leads Exposed Pad	38-TFSOP 38-TSSOP-EP	4.4 mm	90 %	Surface Mount	Positive	Yes	-40 °C	125 °C	No	Boost Buck
Analog Devices Inc./Maxim Integrated LTC3779EFE#PBF	1	150 V	4.5 V	Step-Down Step-Up	Current Limit Power Good Soft Start	600 kHz	50 kHz	Transistor Driver	1	0.173 in	31 Leads Exposed Pad	38-TFSOP 38-TSSOP-EP	4.4 mm	90 %	Surface Mount	Positive	Yes	-40 °C	125 °C	No	Boost Buck
Analog Devices Inc./Maxim Integrated LTC3779HFE#PBF	1	150 V	4.5 V	Step-Down Step-Up	Current Limit Power Good Soft Start	600 kHz	50 kHz	Transistor Driver	1	0.173 in	31 Leads Exposed Pad	38-TFSOP 38-TSSOP-EP	4.4 mm	90 %	Surface Mount	Positive	Yes	-40 °C	150 °C	No	Boost Buck
Analog Devices Inc./Maxim Integrated LTC3779IFE#PBF	1	150 V	4.5 V	Step-Down Step-Up	Current Limit Power Good Soft Start	600 kHz	50 kHz	Transistor Driver	1	0.173 in	31 Leads Exposed Pad	38-TFSOP 38-TSSOP-EP	4.4 mm	90 %	Surface Mount	Positive	Yes	-40 °C	125 °C	No	Boost Buck
Analog Devices Inc./Maxim Integrated LTC3779IFE#TRPBF	1	150 V	4.5 V	Step-Down Step-Up	Current Limit Power Good Soft Start	600 kHz	50 kHz	Transistor Driver	1	0.173 in	31 Leads Exposed Pad	38-TFSOP 38-TSSOP-EP	4.4 mm	90 %	Surface Mount	Positive	Yes	-40 °C	125 °C	No	Boost Buck

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

LTC3779EFE#TRPBF | Datasheet

Tape and Reel Packaging

R526 Reliability Data