Datasheet Linear Technology LT3790

Manufacturer	Linear Technology
Series	LT3790

60V Synchronous 4-Switch Buck-Boost Controller

Datasheets

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PDF, 535 Kb, Language: en, File uploaded: Sep 19, 2017, Pages: 28
60V Synchronous 4-Switch Buck-Boost Controller

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Packaging

	LT3790EFE#PBF	LT3790EFE#TRPBF	LT3790HFE#PBF	LT3790HFE#TRPBF	LT3790IFE#PBF	LT3790IFE#TRPBF	LT3790MPFE#PBF	LT3790MPFE#TRPBF
N	1	2	3	4	5	6	7	8
Package	TSSOP-38 Package Outline Drawing	TSSOP-38 Package Outline Drawing	TSSOP-38 Package Outline Drawing	TSSOP-38 Package Outline Drawing	TSSOP-38 Package Outline Drawing	TSSOP-38 Package Outline Drawing	TSSOP-38 Package Outline Drawing	TSSOP-38 Package Outline Drawing
Package Code	FE	FE	FE	FE	FE	FE	FE	FE
Package Index	05-08-1772	05-08-1772	05-08-1772	05-08-1772	05-08-1772	05-08-1772	05-08-1772	05-08-1772
Pin Count	38	38	38	38	38	38	38	38

Parametrics

Parameters / Models	LT3790EFE#PBF	LT3790EFE#TRPBF	LT3790HFE#PBF	LT3790HFE#TRPBF	LT3790IFE#PBF	LT3790IFE#TRPBF	LT3790MPFE#PBF	LT3790MPFE#TRPBF
Architecture	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode
Demo Boards	DC2123B	DC2123B	DC2123B	DC2123B	DC2123B	DC2123B	DC2123B	DC2123B
Design Tools	LTspice File,LTpowerCAD Model	LTspice File,LTpowerCAD Model	LTspice File,LTpowerCAD Model	LTspice File,LTpowerCAD Model	LTspice File,LTpowerCAD Model	LTspice File,LTpowerCAD Model	LTspice File,LTpowerCAD Model	LTspice File,LTpowerCAD Model
Export Control	no	no	no	no	no	no	no	no
Features	Input Current Monitor, Output Current Monitor, Input Current Regulation, Output Current Regulation, Output Disconnect, PolyPhase, External Synchronization, Resistor Set Frequency	Input Current Monitor, Output Current Monitor, Input Current Regulation, Output Current Regulation, Output Disconnect, PolyPhase, External Synchronization, Resistor Set Frequency	Input Current Monitor, Output Current Monitor, Input Current Regulation, Output Current Regulation, Output Disconnect, PolyPhase, External Synchronization, Resistor Set Frequency	Input Current Monitor, Output Current Monitor, Input Current Regulation, Output Current Regulation, Output Disconnect, PolyPhase, External Synchronization, Resistor Set Frequency	Input Current Monitor, Output Current Monitor, Input Current Regulation, Output Current Regulation, Output Disconnect, PolyPhase, External Synchronization, Resistor Set Frequency	Input Current Monitor, Output Current Monitor, Input Current Regulation, Output Current Regulation, Output Disconnect, PolyPhase, External Synchronization, Resistor Set Frequency	Input Current Monitor, Output Current Monitor, Input Current Regulation, Output Current Regulation, Output Disconnect, PolyPhase, External Synchronization, Resistor Set Frequency	Input Current Monitor, Output Current Monitor, Input Current Regulation, Output Current Regulation, Output Disconnect, PolyPhase, External Synchronization, Resistor Set Frequency
Frequency, kHz	700	700	700	700	700	700	700	700
Frequency Adjust Range	200kHz - 700kHz	200kHz - 700kHz	200kHz - 700kHz	200kHz - 700kHz	200kHz - 700kHz	200kHz - 700kHz	200kHz - 700kHz	200kHz - 700kHz
Frequency Sync Range	200kHz - 700kHz	200kHz - 700kHz	200kHz - 700kHz	200kHz - 700kHz	200kHz - 700kHz	200kHz - 700kHz	200kHz - 700kHz	200kHz - 700kHz
Integrated Inductor	no	no	no	no	no	no	no	no
Ishutdown, µA	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1
Isupply, mA	3	3	3	3	3	3	3	3
Max Phases	4	4	4	4	4	4	4	4
Monolithic	no	no	no	no	no	no	no	no
Number of Outputs	1	1	1	1	1	1	1	1
Operating Temperature Range, °C	0 to 85	0 to 85	-40 to 125	-40 to 125	-40 to 85	-40 to 85	-55 to 125	-55 to 125
Output Current, A	10	10	10	10	10	10	10	10
Polyphase	yes	yes	yes	yes	yes	yes	yes	yes
Synchronous	yes	yes	yes	yes	yes	yes	yes	yes
Topology	Buck-Boost	Buck-Boost	Buck-Boost	Buck-Boost	Buck-Boost	Buck-Boost	Buck-Boost	Buck-Boost
Topology 1	Buck-Boost	Buck-Boost	Buck-Boost	Buck-Boost	Buck-Boost	Buck-Boost	Buck-Boost	Buck-Boost
Vin Max, V	60	60	60	60	60	60	60	60
Vin Min, V	4.7	4.7	4.7	4.7	4.7	4.7	4.7	4.7
Vout Max, V	60	60	60	60	60	60	60	60
Vout Maximum	60V	60V	60V	60V	60V	60V	60V	60V
Vout Min, V	1.2	1.2	1.2	1.2	1.2	1.2	1.2	1.2
Vswitch Max, V	60	60	60	60	60	60	60	60

Eco Plan

	LT3790EFE#PBF	LT3790EFE#TRPBF	LT3790HFE#PBF	LT3790HFE#TRPBF	LT3790IFE#PBF	LT3790IFE#TRPBF	LT3790MPFE#PBF	LT3790MPFE#TRPBF
RoHS	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant

Articles

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Hundreds of Watts, 60V In or Out: Synchronous 4-Switch Buck-Boost Converter is Easy to Parallel to Minimize Temperature Rise &mdash LT Journal
PDF, 802 Kb, File published: Jan 22, 2015
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Hundreds of Watts, 60V In or Out: Synchronous 4-Switch
Buck-Boost Converter is Easy to Parallel to Minimize
Temperature Rise
Keith Szolusha The LT3790 is a 4-switch synchronous buck-boost
DC/DC converter that regulates both constant voltage
and constant current at up to 98.5% efficiency using
only a single inductor. It can deliver hundreds of watts
and features a 60V input and output rating, making it an
ideal DC/DC voltage regulator and battery charger when
both step-up and step-down conversion are needed.
A single LT3790 converter can deliver high
power due to its synchronous switching
topology, but eventually the switching
and/or conduction losses at higher power
can overwhelm a single converter with
excessive board heating. Although heat can VIN
8V TO 56V RIN
1.5mО©
4.7ВµF
100V
Г—2 INTVCC VIN 1ВµF TG1 499k M1 0.1ВµF M4 M2 L1
10ВµH M3 SWI
EN/UVLO BG1 OVLO …

Model Line

Series: LT3790 (8)

LT3790EFE#PBF LT3790EFE#TRPBF LT3790HFE#PBF LT3790HFE#TRPBF LT3790IFE#PBF LT3790IFE#TRPBF LT3790MPFE#PBF LT3790MPFE#TRPBF

Manufacturer's Classification

Power Management > Switching Regulator > Buck-Boost Regulators > External Power Switch Buck-Boost
Space & Harsh Environment > Extended Temperature Plastic (H & MP) > Extended Temperature (H & MP) Switching Regulators