Datasheet Linear Technology LTC3780

Manufacturer	Linear Technology
Series	LTC3780

High Efficiency, Synchronous, 4-Switch Buck-Boost Controller

Datasheets

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PDF, 638 Kb, File uploaded: Sep 23, 2017

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Packaging

	LTC3780EG#PBF	LTC3780EG#TRPBF	LTC3780EUH#PBF	LTC3780EUH#TRPBF	LTC3780IG#PBF	LTC3780IG#TRPBF	LTC3780IUH#PBF	LTC3780IUH#TRPBF	LTC3780MPG	LTC3780MPG#PBF	LTC3780MPG#TR	LTC3780MPG#TRPBF
N	1	2	3	4	5	6	7	8	9	10	11	12
Package	SSOP-24 Package Outline Drawing	SSOP-24 Package Outline Drawing	5x5 QFN-32 Package Outline Drawing	5x5 QFN-32 Package Outline Drawing	SSOP-24 Package Outline Drawing	SSOP-24 Package Outline Drawing	5x5 QFN-32 Package Outline Drawing	5x5 QFN-32 Package Outline Drawing	SSOP-24 Package Outline Drawing	SSOP-24 Package Outline Drawing	SSOP-24 Package Outline Drawing	SSOP-24 Package Outline Drawing
Package Code	G	G	UH	UH	G	G	UH	UH	G	G	G	G
Package Index	05-08-1640 (G24)	05-08-1640 (G24)	05-08-1693	05-08-1693	05-08-1640 (G24)	05-08-1640 (G24)	05-08-1693	05-08-1693	05-08-1640 (G24)	05-08-1640 (G24)	05-08-1640 (G24)	05-08-1640 (G24)
Pin Count	24	24	32	32	24	24	32	32	24	24	24	24

Parametrics

Parameters / Models	LTC3780EG#PBF	LTC3780EG#TRPBF	LTC3780EUH#PBF	LTC3780EUH#TRPBF	LTC3780IG#PBF	LTC3780IG#TRPBF	LTC3780IUH#PBF	LTC3780IUH#TRPBF	LTC3780MPG	LTC3780MPG#PBF	LTC3780MPG#TR	LTC3780MPG#TRPBF
Demo Boards	DC1046A,DC686A,DC1155A	DC1046A,DC686A,DC1155A	DC1046A,DC686A,DC1155A	DC1046A,DC686A,DC1155A	DC1046A,DC686A,DC1155A	DC1046A,DC686A,DC1155A	DC1046A,DC686A,DC1155A	DC1046A,DC686A,DC1155A	DC1046A,DC686A,DC1155A	DC1046A,DC686A,DC1155A	DC1046A,DC686A,DC1155A	DC1046A,DC686A,DC1155A
Design Tools	LTspice File,LTpowerCAD File	LTspice File,LTpowerCAD File	LTspice File,LTpowerCAD File	LTspice File,LTpowerCAD File	LTspice File,LTpowerCAD File	LTspice File,LTpowerCAD File	LTspice File,LTpowerCAD File	LTspice File,LTpowerCAD File	LTspice File,LTpowerCAD File	LTspice File,LTpowerCAD File	LTspice File,LTpowerCAD File	LTspice File,LTpowerCAD File
Export Control	no	no	no	no	no	no	no	no	no	no	no	no
Features	Burst Mode, Output Disconnect, External Synchronization, PLL	Burst Mode, Output Disconnect, External Synchronization, PLL	Burst Mode, Output Disconnect, External Synchronization, PLL	Burst Mode, Output Disconnect, External Synchronization, PLL	Burst Mode, Output Disconnect, External Synchronization, PLL	Burst Mode, Output Disconnect, External Synchronization, PLL	Burst Mode, Output Disconnect, External Synchronization, PLL	Burst Mode, Output Disconnect, External Synchronization, PLL	Burst Mode, Output Disconnect, External Synchronization, PLL	Burst Mode, Output Disconnect, External Synchronization, PLL	Burst Mode, Output Disconnect, External Synchronization, PLL	Burst Mode, Output Disconnect, External Synchronization, PLL
Frequency, kHz	300	300	300	300	300	300	300	300	300	300	300	300
Frequency Sync Range	200kHz - 400kHz	200kHz - 400kHz	200kHz - 400kHz	200kHz - 400kHz	200kHz - 400kHz	200kHz - 400kHz	200kHz - 400kHz	200kHz - 400kHz	200kHz - 400kHz	200kHz - 400kHz	200kHz - 400kHz	200kHz - 400kHz
Integrated Inductor	no	no	no	no	no	no	no	no	no	no	no	no
Ishutdown, µA	55	55	55	55	55	55	55	55	55	55	55	55
Isupply, mA	2.4	2.4	2.4	2.4	2.4	2.4	2.4	2.4	2.4	2.4	2.4	2.4
Monolithic	no	no	no	no	no	no	no	no	no	no	no	no
Number of Outputs	1	1	1	1	1	1	1	1	1	1	1	1
Operating Temperature Range, °C	0 to 85	0 to 85	0 to 85	0 to 85	-40 to 85	-40 to 85	-40 to 85	-40 to 85	-55 to 125	-55 to 125	-55 to 125	-55 to 125
Output Current, A	10	10	10	10	10	10	10	10	10	10	10	10
Polyphase	no	no	no	no	no	no	no	no	no	no	no	no
Synchronous	yes	yes	yes	yes	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	Buck-Boost	Buck-Boost	Buck-Boost	Buck-Boost
Vin Max, V	36	36	36	36	36	36	36	36	36	36	36	36
Vin Min, V	4	4	4	4	4	4	4	4	4	4	4	4
Vout Max, V	30	30	30	30	30	30	30	30	30	30	30	30
Vout Min, V	0.8	0.8	0.8	0.8	0.8	0.8	0.8	0.8	0.8	0.8	0.8	0.8

Eco Plan

	LTC3780EG#PBF	LTC3780EG#TRPBF	LTC3780EUH#PBF	LTC3780EUH#TRPBF	LTC3780IG#PBF	LTC3780IG#TRPBF	LTC3780IUH#PBF	LTC3780IUH#TRPBF	LTC3780MPG	LTC3780MPG#PBF	LTC3780MPG#TR	LTC3780MPG#TRPBF
RoHS	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Not Compliant	Compliant	Not Compliant	Compliant

Design Notes

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Industry's First 4-Switch Buck-Boost Controller Achieves Highest Efficiency Using a Single Inductor &mdash DN369
PDF, 96 Kb, File published: Jun 14, 2005
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advertisement IndustryвЂ™s First 4-Switch Buck-Boost Controller Achieves Highest
Efficiency Using a Single Inducutor вЂ“ Design Note 369
Wilson Zhou and Theo Phillips
Introduction
One of the most common DC/DC converter problems
is generating a regulated voltage that falls somewhere
in the middle of a wide range of input voltages. When
the input voltage can be above, below or equal to the
output voltage, the converter must perform step-down
and step-up functions. Unlike solutions requiring bulky
transformers, the LTC В®3780 meets these requirements
in the most compact and efп¬Ѓcient manner, using just
one off-the-shelf inductor and a single current sense
resistor. High Efп¬Ѓciency 4-Switch Buck-Boost Converter
Figure 1 shows a simpliп¬Ѓed LTC3780 4-switch buckboost converter. When VIN exceeds VOUT, the LTC3780
operates in buck mode. With switch D on and switch C
off, switches A and B turn on and turn off alternately,
as they would in a typical synchronous buck regulator.
Conversely, when VIN is lower than VOUT, the LTC3780
operates in boost mode. With switch A on and synchronous switch B off, switch C and synchronous switch D
turn on and turn off alternately, behaving as a typical
synchronous boost regulator. The LTC3780 uses a constant frequency current mode
architecture which allows seamless transitions between …

Articles

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Breakthrough Buck-Boost Controller Provides up to 10A from a Wide 4V-36V Input Range &mdash LT Journal
PDF, 1.1 Mb, File published: Sep 1, 2005
Extract from the document
LINEAR TECHNOLOGY SEPTEMBER 2005 IN THIS ISSUEвЂ¦
COVER ARTICLE
Breakthrough Buck-Boost Controller
Provides up to 10A from a Wide
4VвЂ“36V Input Range .1
Theo Phillips and Wilson Zhou Issue Highlights .2
Linear Technology in the NewsвЂ¦.2
DESIGN FEATURES
Dual, 1.4A and 800mA, Buck Regulator
for Space-Sensitive Applications .7
Scott Fritz ВµPower Precision Dual Op Amp
Combines the Advantages of
Bipolar and CMOS Ampliп¬Ѓers .9
Cheng-Wei Pei and Hengsheng Liu High Voltage Micropower Regulators
Thrive in Harsh Environments .11
Todd Owen Complete 2-Cell-AA/USB Power
Manager in a 4mm Г— 4mm QFN .13
G. Thandi Micropower Precision Oscillator
Draws Only 60ВµA at 1MHz .17
Albert Huntington New Standalone Linear
Li-Ion Battery Chargers .20
Alfonso Centuori Monolithic Buck Regulator Operates
Down to 1.6V Input; Simpliп¬Ѓes Design …

Model Line

Series: LTC3780 (12)

LTC3780EG#PBF LTC3780EG#TRPBF LTC3780EUH#PBF LTC3780EUH#TRPBF LTC3780IG#PBF LTC3780IG#TRPBF LTC3780IUH#PBF LTC3780IUH#TRPBF LTC3780MPG LTC3780MPG#PBF LTC3780MPG#TR LTC3780MPG#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