Datasheet Linear Technology LTC4001

Manufacturer	Linear Technology
Series	LTC4001

2A Synchronous Buck Li-Ion Charger

Datasheets

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PDF, 241 Kb, Language: en, File uploaded: Oct 2, 2017, Pages: 20
2A Synchronous Buck Li-Ion Charger

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Prices

Packaging

	LTC4001EUF#PBF	LTC4001EUF#TRPBF
N	1	2
Package	4x4 QFN-16 Package Outline Drawing	4x4 QFN-16 Package Outline Drawing
Package Code	UF	UF
Package Index	05-08-1692	05-08-1692
Pin Count	16	16

Parametrics

Parameters / Models	LTC4001EUF#PBF	LTC4001EUF#TRPBF
Battery Chemistry	Li-Ion, Li-Polymer	Li-Ion, Li-Polymer
Charge Termination	Timer	Timer
Demo Boards	DC930A	DC930A
Export Control	no	no
Float Voltage, V	4.2V	4.2V
Internal Pass Element	yes	yes
Max Charge Current, A	2	2
Number of Cells	1	1
Operating Temperature Range, °C	0 to 85	0 to 85
Type of Charger	Switching	Switching
Vin Max, V	5.5	5.5
Vin Min, V	4	4

Eco Plan

	LTC4001EUF#PBF	LTC4001EUF#TRPBF
RoHS	Compliant	Compliant

Design Notes

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Handheld High Power Battery Charger &mdash DN393
PDF, 102 Kb, File published: Jun 1, 2006
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advertisement Handheld High Power Battery Charger
Design Note 393
Mark Gurries
Introduction
As the performance of many handheld devices approaches
that of laptop computers, design complexity also increases. Chief among them is thermal managementвЂ”how do
you meet increasing performance demands while keeping
a compact and small product cool in the userвЂ™s hand? small 1206-size 10ВµF ceramic capacitors, and a few other
tiny components. Furthermore, even simpler conп¬Ѓgurations are possible (see Figure 2). This monolithic 2A,
1.5MHz synchronous PWM standalone battery charger
is packaged in a 4mm Г— 4mm 16-pin QFN package,
which contains the built-in switching MOSFETs and
charge termination controller. Figure 3 shows an actual
PCB solution. For instance, as battery capacities inevitably increase,
charge currents will also increase to maintain or improve
their charge times. Traditional linear regulator-based battery chargers will not be able to meet the charge current
and efп¬Ѓciency demands necessary to allow a product to
run cool. What is needed is a switching-based charger
that takes just about the same amount of space as a linear
solutionвЂ”but without the heat. Advanced Features and Functions
One of the more unique features of the LTC4001 is its
full remote voltage sense capability which permits faster
charge rates by bypassing voltage drops in narrow PCB …

Articles

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Reduce Charge Time for High Capacity Li-Ion Batteries with 2A Continuous Charging &mdash LT Journal
PDF, 331 Kb, File published: Oct 25, 2006
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LINEAR TECHNOLOGY JUNE 2006 IN THIS ISSUEвЂ¦
COVER ARTICLE
Reduce Charge Time
for High Capacity Li-Ion Batteries
with 2A Continuous Charging .1
Tom Hack Issue Highlights .2
Linear Technology in the NewsвЂ¦.2
DESIGN FEATURES
650MHz Selectable-Gain Ampliп¬Ѓer/
Differential ADC Driver Has Small
Form but Many Functions .6
Cheng-Wei Pei Dual Step-Up Converter Drives White
LEDs with 1000:1 PWM Dimming .10
Keith Szolusha Hot Swapв„ў Controller Monitors and
Reports Power Supply Status .12
Josh Simonson Efп¬Ѓcient Buck-Boost Converter Ideal
for Power Saving Modes and Wide Input
Voltage Ranges .16
Kevin Ohlson Dual/Triple Power Supply Monitor
for Undervoltage and Overvoltage
on Positive and Negative Supplies .19
Andrew Thomas High Speed Low Power RS485
Transceivers with Integrated …

Model Line

Series: LTC4001 (2)

LTC4001EUF#PBF LTC4001EUF#TRPBF

Manufacturer's Classification

Power Management > Battery Management > Battery Charger IC > Switching Battery Chargers