Datasheet Linear Technology LTC3780IUH#PBF

Manufacturer	Linear Technology
Series	LTC3780
Part Number	LTC3780IUH#PBF

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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Prices

Packaging

Package	5x5 QFN-32
Package Code	UH
Package Index	05-08-1693

Parametrics

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

Eco Plan

RoHS

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
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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

Other Names:

LTC3780IUHPBF, LTC3780IUH PBF