LT8357EMSE#TRPBF

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Analog Devices Inc./Maxim Integrated

60V 2MHZ LOW-IQBOOST, SEPIC AND FLYBACK CONTROLLER

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LT8357EMSE#TRPBF

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Analog Devices Inc./Maxim Integrated

60V 2MHZ LOW-IQBOOST, SEPIC AND FLYBACK CONTROLLER

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Description Specifications Series Pricing CAD Documents

Description

General part information

LT8357 Series

The LT8357 is a wide input range, current mode, DC/DC controller which can be configured as a boost, SEPIC or flyback converter. The LT8357 drives a low side N-channel power MOSFET with 5V split gate drive. The current mode architecture allows adjustable and synchronizable 100kHz to 2MHz fixed frequency operation, or internal 19% triangle spread spectrum operation for low EMI. At light load, either pulse-skipping mode or low-ripple Burst Mode operation can be selected. Additional features include output power good and output short circuit protection in SEPIC and flyback configurations.With a wide 3V to 60V input voltage range and 8μA low quiescent current, the LT8357 provides a simple, compact and efficient solution for automotive, industrial, and battery-powered systems.APPLICATIONSAutomotive and Industrial SystemsBattery-Powered SystemsPortable Electronic Equipment

Technical Specifications

Parameters and characteristics for this part

Specification	LT8357EMSE#TRPBF

Clock Sync	No
Control Features	Soft Start, Current Limit, Frequency Control, Enable, Power Good
Duty Cycle (Max)	95 %
Frequency - Switching (Max)	2 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
Output Phases	1
Output Type	Transistor Driver
Package Features	Exposed Pad
Package Length	0.118 in
Package Name	12-TSSOP, 12-MSOP-EP
Package Width	3 mm
Synchronous Rectifier	No
Topology	SEPIC, Flyback, Boost
Voltage - Supply (Vcc/Vdd) Maximum	60 V
Voltage - Supply (Vcc/Vdd) Minimum	3 V

LT8357 Series

60V 2MHz Low-IQBoost, SEPIC and Flyback Controller

Part	Control Features	Synchronous Rectifier	Voltage - Supply (Vcc/Vdd) Minimum	Voltage - Supply (Vcc/Vdd) Maximum	Output Phases	Mounting Type	Operating Temperature (Min)	Operating Temperature (Max)	Number of Outputs	Output Type	Frequency - Switching (Max)	Frequency - Switching (Min)	Package Length	Package Features	Package Name	Package Width	Duty Cycle (Max)	Function	Topology	Output Configuration	Clock Sync	Total Output Count	Non-Isolated Output Count	Board Type	Supplied Contents	Utilized IC / Part	Current - Output (Min)	Current - Output (Max)	Voltage - Input (Minimum)	Voltage - Input (Maximum)	Main Purpose	Contents	Regulator Topology	Voltage - Output	Frequency - Switching
Analog Devices Inc./Maxim Integrated LT8357JMSE#TRPBF	Current Limit Enable Frequency Control Power Good Soft Start	No	3 V	60 V	1	Surface Mount	-40 °C	150 °C	1	Transistor Driver	2 MHz	100 kHz	0.118 in	Exposed Pad	12-MSOP-EP 12-TSSOP	3 mm	95 %	Step-Up Step-Up/Step-Down	Boost Flyback SEPIC	Positive	No
Analog Devices Inc./Maxim Integrated LT8357HMSE#PBF	Current Limit Enable Frequency Control Power Good Soft Start	No	3 V	60 V	1	Surface Mount	-40 °C	150 °C	1	Transistor Driver	2 MHz	100 kHz	0.118 in	Exposed Pad	12-MSOP-EP 12-TSSOP	3 mm	95 %	Step-Up Step-Up/Step-Down	Boost Flyback SEPIC	Positive	No
Analog Devices Inc./Maxim Integrated EVAL-LT8357-AZ										Non-Isolated												1	1 count	Fully Populated	Board(s)	LT8357	1 A	2 A	4.5 V	20 V	DC/DC Step Up	Board	Boost	24 V	200 kHz
Analog Devices Inc./Maxim Integrated LT8357EMSE#TRPBF	Current Limit Enable Frequency Control Power Good Soft Start	No	3 V	60 V	1	Surface Mount	-40 °C	125 °C	1	Transistor Driver	2 MHz	100 kHz	0.118 in	Exposed Pad	12-MSOP-EP 12-TSSOP	3 mm	95 %	Step-Up Step-Up/Step-Down	Boost Flyback SEPIC	Positive	No
Analog Devices Inc./Maxim Integrated LT8357JMSE#PBF	Current Limit Enable Frequency Control Power Good Soft Start	No	3 V	60 V	1	Surface Mount	-40 °C	150 °C	1	Transistor Driver	2 MHz	100 kHz	0.118 in	Exposed Pad	12-MSOP-EP 12-TSSOP	3 mm	95 %	Step-Up Step-Up/Step-Down	Boost Flyback SEPIC	Positive	No
Analog Devices Inc./Maxim Integrated LT8357EMSE#PBF	Current Limit Enable Frequency Control Power Good Soft Start	No	3 V	60 V	1	Surface Mount	-40 °C	125 °C	1	Transistor Driver	2 MHz	100 kHz	0.118 in	Exposed Pad	12-MSOP-EP 12-TSSOP	3 mm	95 %	Step-Up Step-Up/Step-Down	Boost Flyback SEPIC	Positive	No
Analog Devices Inc./Maxim Integrated LT8357HMSE#TRPBF	Current Limit Enable Frequency Control Power Good Soft Start	No	3 V	60 V	1	Surface Mount	-40 °C	150 °C	1	Transistor Driver	2 MHz	100 kHz	0.118 in	Exposed Pad	12-MSOP-EP 12-TSSOP	3 mm	95 %	Step-Up Step-Up/Step-Down	Boost Flyback SEPIC	Positive	No

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

Datasheet

EVAL-LT8357-AZ - Demo Manual (Rev.0)

DC2937A - Demo Manual (Rev.0)

LT8357: 60V 2MHz Low-IQBoost, SEPIC and Flyback Controller Data Sheet (Rev.0)