Datasheet Linear Technology LTC4099

Manufacturer	Linear Technology
Series	LTC4099

I2C Controlled USB Power Manager/Charger with Overvoltage Protection

Datasheets

PDF, 554 Kb, Revision: D, File uploaded: Oct 22, 2017

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Packaging

	LTC4099EUDC#PBF	LTC4099EUDC#TRPBF
N	1	2
Package	3x4 QFN-20 Package Outline Drawing	3x4 QFN-20 Package Outline Drawing
Package Code	UDC	UDC
Package Index	05-08-1742	05-08-1742
Pin Count	20	20

Parametrics

Parameters / Models	LTC4099EUDC#PBF	LTC4099EUDC#TRPBF
Battery Chemistry	Li-Ion, Li-Polymer	Li-Ion, Li-Polymer
Demo Boards	DC1396A	DC1396A
Export Control	no	no
Features	PowerPath, Bat-Track, Overvoltage Protection, I2C	PowerPath, Bat-Track, Overvoltage Protection, I2C
Float Voltage, V	4.2V	4.2V
Max Charge Current, A	1.5	1.5
Number of Cells	1	1
Number of Outputs	1	1
Operating Temperature Range, °C	0 to 85	0 to 85
PowerPath	Switching PowerPath, 180mв„¦ Internal Ideal Diode	Switching PowerPath, 180mв„¦ Internal Ideal Diode
Type of Charger	Switching, I2C	Switching, I2C
Vin Max, V	5.5	5.5
Vin Min, V	4.35	4.35

Eco Plan

	LTC4099EUDC#PBF	LTC4099EUDC#TRPBF
RoHS	Compliant	Compliant

Design Notes

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LTC4099 Provides Unprecedented Control of USB Power Management and Battery Charger Functions Using I2C &mdash DN1017
PDF, 114 Kb, File published: Mar 26, 2009
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LTC4099 Provides Unprecedented Control of USB Power
Management and Battery Charger Functions Using I2C
Design Note 1017
George H. Barbehenn
Introduction
The LTC В®4099 high efп¬Ѓciency USB power manager and
Li-Ion/Polymer battery charger seamlessly manages
power distribution from multiple sources in portable
applications. It is differentiated from other USB power
managers by its bidirectional I2C port that allows the host
microprocessor to control and monitor all aspects of the
USB power management and battery charging processes.
In addition, a programmable interrupt generation function
alerts the host microprocessor to changes in device status
and provides unprecedented control of power management functions. This high degree of conп¬Ѓgurability allows
post-layout changes in operation, even changes in the
п¬Ѓeld, and it allows a single qualiп¬Ѓed device to be used
in a variety of products, thus reducing design time and
easing inventory management.
Many Desirable Features in a Small Package
In addition to all of its power management functions,
the LTC4099 includes overvoltage protection, auxiliary
regulator control (to manage high voltage inputs), and an …

Articles

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Battery Conditioner Extends the Life of Li-Ion Batteries &mdash LT Journal
PDF, 186 Kb, File published: Dec 1, 2009
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DESIGN IDEASвЂ‰L Battery Conditioner Extends the
by George H. Barbehenn
Life of Li-Ion Batteries
Introduction
Li-Ion batteries naturally age, with an
expected lifetime of about three years,
but that life can be cut very shortвЂ”to
under a yearвЂ”if the batteries are mishandled. It turns out that the batteries
are typically abused in applications
where intelligent conditioning would
otherwise significantly extend the
battery lifetime. The LTC4099 battery
charger and power manager contains
an I2C controlled battery conditioner
that maximizes battery operating life,
while also optimizing battery run time
and charging speed (see Figure 1). The Underlying Aging
Process in Li-Ion Batteries Modern Li-Ion batteries are constructed of a graphite battery cathode,
cobalt, manganese or iron phosphate
battery anode and an electrolyte that
transports the lithium ions.
The electrolyte may be a gel, a
polymer (Li-Ion/Polymer batteries) …

Model Line

Series: LTC4099 (2)

LTC4099EUDC#PBF LTC4099EUDC#TRPBF

Manufacturer's Classification

Power Management > PMIC & Multifunction > USB Power Manager (PowerPath, Battery Charger)

Slices

Microcontrollers