Datasheet Linear Technology LTC3441 — 数据表

制造商	Linear Technology
系列	LTC3441

大电流微功率同步降压-升压型DC / DC转换器

数据表

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PDF, 276 Kb, 修订版: C, 文件上传: Sep 21, 2017

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打包

	LTC3441EDE#PBF	LTC3441EDE#TRPBF
N	1	2
Package	4x3 DFN-12 包装外形图	4x3 DFN-12 包装外形图
Package Code	DE/UE	DE/UE
Package Index	05-08-1695	05-08-1695
Pin Count	12	12

参数化

Parameters / Models	LTC3441EDE#PBF	LTC3441EDE#TRPBF
Architecture	Constant Frequency Current Mode	Constant Frequency Current Mode
Demo Boards	DC625A,DC773A	DC625A,DC773A
Design Tools	LTspice Model	LTspice Model
Export Control	no	no
Features	Output Disconnect, Burst Mode, External Synchronization	Output Disconnect, Burst Mode, External Synchronization
Frequency, kHz	1000	1000
Frequency Sync Range	1.15MHz - 1.7MHz	1.15MHz - 1.7MHz
Integrated Inductor	no	no
Ishutdown, µA	0.1	0.1
Isupply, mA	0.025	0.025
Monolithic	yes	yes
Number of Outputs	1	1
Operating Temperature Range, °C	0 to 85	0 to 85
Output Current, A	1.2	1.2
Polyphase	no	no
Synchronous	yes	yes
Topology	Buck-Boost	Buck-Boost
Vin Max, V	5.5	5.5
Vin Min, V	2.4	2.4
Vout Max, V	5.25	5.25
Vout Min, V	2.4	2.4

生态计划

	LTC3441EDE#PBF	LTC3441EDE#TRPBF
RoHS	Compliant	Compliant

文章

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Versatile Buck-Boost Converter Offers High Efficiency in a Wide Variety of Applications &mdash LT Journal
PDF, 1.3 Mb, 档案已发布: Jun 10, 2005
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DESIGN FEATURES Versatile Buck-Boost Converter
Offers High Efп¬Ѓciency in a Wide
by Dave Salerno
Variety of Applications
Introduction L1 5ВµH Miniature hard disk drives are a popular storage medium for MP3 music п¬Ѓles,
digital photographs and other data
stowed in the latest portable electronics. Likewise lithium-ion batteries are
popular for these same devices, which
presents a minor problem in that mini
disk drives typically require a 3.3V
supply, which is right in the middle
of the lithium-ion batteryвЂ™s operating
range (3.0V-to-4.2V). This requires a
converter that can both step down a
fully-charged Li-Ion battery and step
up the same battery as it discharges
to sub-3.3V levels.
The LTC3442 is a 1.2A buck-boost
converter that is ideal for mini disk
drive applications, and certainly for
other buck-boost appliations as well.
The LTC3442 extends battery life with
95% efп¬Ѓciency and п¬Ѓts into tight spaces …
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Monolithic Buck-Boost Converter Provides 1A at 3.3V without Schottky Diodes &mdash LT Journal
PDF, 76 Kb, 档案已发布: Sep 1, 2003
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DESIGN IDEAS Monolithic Buck-Boost
Converter Provides 1A at 3.3V
by Mark Jordan
without Schottky Diodes
Introduction Inside the LTC3441
The LTC3441 patented control technique provides smooth and continuous
transfer from buck, buck-boost and
boost modes while maintaining a
constant frequency at no load. The
operating frequency is factory set to
1MHz and can be synchronized up to
1.7MHz. For light loads, the part offers
user controlled Burst Mode operation
to maximize battery life, drawing only
25ВµA of quiescent current. To limit
inrush current at start-up, an external
RC network can be connected to the
SHDN/SS pin to control output voltage rise time.
The LTC3441 is available in a small
3mm by 4mm low thermal resistance
12-lead DFN package. L1
4.7ВµH 4
9 …

模型线

系列: LTC3441 (2)

LTC3441EDE#PBF LTC3441EDE#TRPBF

制造商分类

Power Management > Switching Regulator > Buck-Boost Regulators > Internal Power Switch Buck-Boost