Datasheet Linear Technology LTC4089

Manufacturer	Linear Technology
Series	LTC4089

USB Power Manager with High Voltage Switching Charger

Datasheets

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PDF, 739 Kb, Revision: D, File uploaded: Oct 22, 2017

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Packaging

	LTC4089EDJC#PBF	LTC4089EDJC#TRPBF
N	1	2
Package	6x3 DFN-22 Package Outline Drawing	6x3 DFN-22 Package Outline Drawing
Package Code	DJC	DJC
Package Index	05-08-1714	05-08-1714
Pin Count	22	22

Parametrics

Parameters / Models	LTC4089EDJC#PBF	LTC4089EDJC#TRPBF
Battery Chemistry	Li-Ion, Li-Polymer	Li-Ion, Li-Polymer
Demo Boards	DC929A-A,DC929A-B	DC929A-A,DC929A-B
Export Control	no	no
Features	Dual Input, PowerPath, Bat-Track	Dual Input, PowerPath, Bat-Track
Float Voltage, V	4.2V	4.2V
Max Charge Current, A	1.2	1.2
Number of Cells	1	1
Number of Outputs	1	1
Operating Temperature Range, °C	0 to 85	0 to 85
PowerPath	Linear PowerPath, 180mв„¦ Internal Ideal Diode	Linear PowerPath, 180mв„¦ Internal Ideal Diode
Type of Charger	Linear	Linear
Vin Max, V	36	36
Vin Min, V	6	6

Eco Plan

	LTC4089EDJC#PBF	LTC4089EDJC#TRPBF
RoHS	Compliant	Compliant

Other Options

LTC4089-5

Design Notes

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Universal Li-Ion Battery Charger Operates from USB and 6V to 36V Input in Just 2cm2 &mdash DN395
PDF, 101 Kb, File published: Jul 19, 2006
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advertisement Universal Li-Ion Battery Charger Operates from USB and
6V to 36V Input in Just 2cm2 вЂ“ Design Note 395
Liu Yang
3mm Г— 6mm DFN package. The LTC4089вЂ™s buck regulator output voltage tracks the battery voltage to within
300mV. This Bat-TrackTM feature minimizes overall power
dissipation. The LTC4089-5 has a п¬Ѓxed 5V at OUT when
power is applied at HVIN. When power is supplied from
the USB port, the power manager maximizes the available
power to the system load; up to the full USB available
power of 2.5W. It automatically adjusts the Li-Ion battery
charge current with respect to the system load current
to maintain the total input current compliance within the
USB limits. The total solution size is less than 2cm2 with
all components on one side of the PCB. Introduction
There are a number of advantages to offering USB and
high input voltage power and battery-charging capability in handheld devices such as GPS navigators, PDAs,
digital still cameras, photoviewers and MP3 players. For
instance, charging and operation from USB offers the
obvious convenience of not requiring a travel adapter. High
voltage sources, such as Firewire and 12V to 24V adapters
are even better, since they provide faster charging than
USB and allow charging in more places, such as in the car.
Nevertheless, there is an important design consideration …

Articles

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Integrated High Voltage Switching Charger/PowerPath Controller Minimizes Power Dissipation and Fits into 2cm² &mdash LT Journal
PDF, 560 Kb, File published: Nov 22, 2006
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DESIGN FEATURESвЂ‰L Integrated High Voltage Switching
Charger/PowerPath Controller
Minimizes Power Dissipation and
Fits into 2cm2вЂЉ
by Tage Bjorklund
Introduction
GPS navigators, PDAs, MP3 players
and other handheld devices draw
on an increasing array of power
sources for recharging their batteries.
These sources include USB (4.5V),
low voltage AC adaptors (4.5VвЂ“5V),
high voltage AC adaptors (12VвЂ“24V),
Firewire and automotive batteries.
USB has the advantage of convenience
while the high voltage sources offer
faster charging at home and in the car.
One issue with high voltage sources
is that the voltage difference between
the high voltage source and the battery
is large enough that a linear charger
cannot handle the power dissipation,
thus dictating the need for a switching regulator. …

Model Line

Series: LTC4089 (2)

LTC4089EDJC#PBF LTC4089EDJC#TRPBF

Manufacturer's Classification

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