Datasheet Linear Technology LTC3455EUF#TRPBF — 数据表

制造商	Linear Technology
系列	LTC3455
零件号	LTC3455EUF#TRPBF

具有USB电源管理器和锂离子电池充电器的双DC / DC转换器

数据表

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PDF, 346 Kb, 修订版: C, 文件上传: Oct 21, 2017

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价格

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Package	4x4 QFN-24
Package Code	UF
Package Index	05-08-1697

参数化

Battery Chemistry	Li-Ion, Li-Polymer
Buck Output Current	0.4, 0.6 A
Demo Boards	DC1448A,DC631B
Export Control	no
Features	Dual Input, Battery Charger, PowerPath, Buck, Hot Swap
Float Voltage	4.2V, 4.1V V
Max Charge Current	1 A
Number of Outputs	2
Operating Temperature Range	0 to 85 °C
PowerPath	Linear PowerPath, 150mв„¦ Internal Ideal Diode
Type of Charger	Linear
Vin Max	5.5 V
Vin Min	4.3 V

生态计划

RoHS

Compliant

其他选择

LTC3455-1

设计须知

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Simple, Efficient, All-in-One USB Power Management IC Solution &mdash DN1008
PDF, 66 Kb, 档案已发布: Aug 1, 2004
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advertisement Simple, Efficient, All-in-One USB Power Management IC Solution
Design Note 1008
John Shannon
Introduction
Linear Technology offers a variety of devices that simplify
converting power from a USB cable, but the LTCВ®3455
represents the highest level of functional integration yet
achieved. The LTC3455 seamlessly manages power flow
between an AC adapter, USB cable and Li-ion battery,
while complying with USB power standards, all from a
4mm Г— 4mm QFN package. In addtion, two high efficiency
synchronous buck converters generate low voltage rails
which most USB-powered peripherals require. The
LTC3455 also provides power-on reset signals for the
microprocessor, a Hot SwapTM output for powering
memory cards as well as an uncommitted gain block
suitable for use as a low-battery comparator or an LDO
controller. The PCB real estate required for the entire USB
power control circuit and two DC/DC converters is only
225mm2.
The simplified block diagram of the LTC3455 in Figure 1
shows the major components that allow the LTC3455 to
accomplish multiple functions. The DC/DC conversion is …

文章

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Complete USB Power Manager, Li-Ion Charger and Two Buck Converters in a 4mm x 4mm QFN &mdash LT Journal
PDF, 272 Kb, 档案已发布: Feb 1, 2004
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LINEAR TECHNOLOGY FEBRUARY 2004 IN THIS ISSUEвЂ¦
COVER ARTICLE
Complete USB Power Manager, Li-Ion
Charger and Two Buck Converters
in a 4mm Г— 4mm QFN . 1
Bryan Legates Issue Highlights . 2
LTC in the NewsвЂ¦. 2
DESIGN FEATURES
Easy-to-Use Spread Spectrum Clock
Generator Reduces EMI and More . 6
Tim Regan and Doug La Porte Monolithic Ideal Diode
Prolongs Battery Life. 10
Andrew Bishop Versatile Power Supply
Tracking without MOSFETs. 13
Dan Eddleman Compact, Versatile, Accurate,
3-State Programmable Power
Supply Supervisors. 19
Eko T. Lisuwandi 2-Phase Controller Makes Small,
Fast and Efficient Power Supplies
with Output Tracking. 24
David Chen DESIGN IDEAS
. 27вЂ“36
(complete list on page 27) New Device Cameos. 37 VOLUME XIV NUMBER 1 Complete USB Power …
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New Family of Integrated Power Controllers Combine Fast Battery Charging, PowerPath Control and Efficient DC/DC Converters in Less Than 20mm2 &mdash LT Journal
PDF, 303 Kb, 档案已发布: Sep 23, 2008
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LвЂ‰DESIGN FEATURES New Family of Integrated Power
Controllers Combine Fast Battery
Charging, PowerPath Control and
Efficient DC/DC Converters in
by Sam Nork
Less Than 20mm2
Introduction
The quickest way to build an efficient
power system for a battery-powered
portable application is to use an
IC that combines all power control
functions into a single chip, namely a
Power Management Integrated Circuit
(PMIC). PMICs seamlessly manage
power flow from various power sources
(wall adapters, USB and batteries) to
power loads (device systems and the
charging battery), while maintaining
current limits where required (such
as that specified for USB). To this
end, PMICs typically feature built-in
PowerPathв„ў control, DC/DC conver-USB/WALL
4.35V TO 5.5V TO OTHER …

模型线

系列: LTC3455 (2)

LTC3455EUF#PBF LTC3455EUF#TRPBF

制造商分类

Power Management > PMIC & Multifunction > PMIC (DC/DC, PowerPath and Battery Charger)

其他名称:

LTC3455EUFTRPBF, LTC3455EUF TRPBF