LT3748MPMS#PBF

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Analog Devices Inc./Maxim Integrated

100V ISOLATED FLYBACK CONTROLLER

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LT3748MPMS#PBF

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Analog Devices Inc./Maxim Integrated

100V ISOLATED FLYBACK CONTROLLER

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Description Specifications Series Pricing CAD Documents

Description

General part information

LT3748 Series

The LT3748 is a switching regulator controller specifically designed for the isolated flyback topology and capable of high power. It drives a low side external N-channel power MOSFET from an internally regulated 7V supply. No third winding or opto-isolator is required for regulation as the part senses the isolated output voltage directly from the primary-side flyback waveform.The LT3748 utilizes boundary mode to provide a small magnetic solution without compromising load regulation. Operating frequency is set by load current and transformer magnetizing inductance. The gate drive of the LT3748 combined with a suitable external MOSFET allow it to deliver load power up to several tens of watts from input voltages as high as 100V.The LT3748 is available in a high voltage 16-lead MSOP package with four leads removed.ApplicationsIsolated Telecom ConvertersHigh Power Automotive SuppliesIsolated Industrial Power SuppliesMilitary and High Temperature Applications

Technical Specifications

Parameters and characteristics for this part

Specification	LT3748MPMS#PBF

Clock Sync	No
Control Features	Soft Start, Enable
Function	Step-Up, Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature (Max)	150 °C
Operating Temperature (Min)	-55 °C
Output Configuration	Positive, Isolation Capable
Output Phases	1
Output Type	Transistor Driver
Package Features	12 Leads
Package Length	0.118 in
Package Name	16-MSOP, 16-TFSOP
Package Width	3 mm
Synchronous Rectifier	No
Topology	Flyback
Voltage - Supply (Vcc/Vdd) Maximum	100 V
Voltage - Supply (Vcc/Vdd) Minimum	5 V

LT3748 Series

100V Isolated Flyback Controller

Part	Clock Sync	Output Configuration	Package Name	Operating Temperature (Min)	Operating Temperature (Max)	Output Phases	Synchronous Rectifier	Topology	Output Type	Voltage - Supply (Vcc/Vdd) Maximum	Voltage - Supply (Vcc/Vdd) Minimum	Number of Outputs	Control Features	Function	Mounting Type	Package Features	Package Width	Package Length
Analog Devices Inc./Maxim Integrated LT3748MPMS#TRPBF	No	Isolation Capable Positive	16-MSOP 16-TFSOP	-55 °C	150 °C	1	No	Flyback	Transistor Driver	100 V	5 V	1	Enable Soft Start	Step-Down Step-Up	Surface Mount	12 Leads	3 mm	0.118 in
Analog Devices Inc./Maxim Integrated LT3748HMS#TRPBF	No	Isolation Capable Positive	16-MSOP 16-TFSOP	-40 °C	150 °C	1	No	Flyback	Transistor Driver	100 V	5 V	1	Enable Soft Start	Step-Down Step-Up	Surface Mount	12 Leads	3 mm	0.118 in
Analog Devices Inc./Maxim Integrated LT3748MPMS	No	Isolation Capable Positive	16-MSOP 16-TFSOP	-55 °C	150 °C	1	No	Flyback	Transistor Driver	100 V	5 V	1	Enable Soft Start	Step-Down Step-Up	Surface Mount	12 Leads	3 mm	0.118 in
Analog Devices Inc./Maxim Integrated LT3748EMS#PBF	No	Isolation Capable Positive	16-MSOP 16-TFSOP	-40 °C	125 °C	1	No	Flyback	Transistor Driver	100 V	5 V	1	Enable Soft Start	Step-Down Step-Up	Surface Mount	12 Leads	3 mm	0.118 in
Analog Devices Inc./Maxim Integrated LT3748IMS#TRPBF	No	Isolation Capable Positive	16-MSOP 16-TFSOP	-40 °C	125 °C	1	No	Flyback	Transistor Driver	100 V	5 V	1	Enable Soft Start	Step-Down Step-Up	Surface Mount	12 Leads	3 mm	0.118 in
Analog Devices Inc./Maxim Integrated LT3748IMS#PBF	No	Isolation Capable Positive	16-MSOP 16-TFSOP	-40 °C	125 °C	1	No	Flyback	Transistor Driver	100 V	5 V	1	Enable Soft Start	Step-Down Step-Up	Surface Mount	12 Leads	3 mm	0.118 in
Analog Devices Inc./Maxim Integrated LT3748MPMS#TR	No	Isolation Capable Positive	16-MSOP 16-TFSOP	-55 °C	150 °C	1	No	Flyback	Transistor Driver	100 V	5 V	1	Enable Soft Start	Step-Down Step-Up	Surface Mount	12 Leads	3 mm	0.118 in
Analog Devices Inc./Maxim Integrated LT3748EMS#TRPBF	No	Isolation Capable Positive	16-MSOP 16-TFSOP	-40 °C	125 °C	1	No	Flyback	Transistor Driver	100 V	5 V	1	Enable Soft Start	Step-Down Step-Up	Surface Mount	12 Leads	3 mm	0.118 in
Analog Devices Inc./Maxim Integrated LT3748HMS#PBF	No	Isolation Capable Positive	16-MSOP 16-TFSOP	-40 °C	150 °C	1	No	Flyback	Transistor Driver	100 V	5 V	1	Enable Soft Start	Step-Down Step-Up	Surface Mount	12 Leads	3 mm	0.118 in
Analog Devices Inc./Maxim Integrated LT3748MPMS#PBF	No	Isolation Capable Positive	16-MSOP 16-TFSOP	-55 °C	150 °C	1	No	Flyback	Transistor Driver	100 V	5 V	1	Enable Soft Start	Step-Down Step-Up	Surface Mount	12 Leads	3 mm	0.118 in

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

LT3748MPMS#PBF | Datasheet

R530 Reliability Data