LTC4080X datasheet(20/20 Pages) LINER

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LTC4080X

4080Xf

Linear Technology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417

(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com

LT 0307 • PRINTED IN USA

PART NUMBER

DESCRIPTION

COMMENTS

Battery Chargers

LTC3550

Dual Input USB/AC Adapter Li-Ion Battery Charger

with Adjustable Output 600mA Buck Converter

Synchronous Buck Converter, Efﬁciency: 93%, Adjustable Output: 600mA,

Charge Current: 950mA Programmable, USB Compatible, Automatic Input Power

Detection and Selection

LTC3550-1

Dual Input USB/AC Adapter Li-Ion Battery Charger

with 600mA Buck Converter

Synchronous Buck Converter, Efﬁciency: 93%, Output: 1.875V at 600mA,

Charge Current: 950mA Programmable, USB Compatible, Automatic Input Power

Detection and Selection

LTC4054

Standalone Linear Li-Ion Battery Charger with

Integrated Pass Transistor in ThinSOT

Thermal Regulation Prevents Overheating, C/10 Termination

LTC4061

Standalone Li-Ion Charger with Thermistor

Interface

4.2V, ±0.35% Float Voltage, Up to 1A Charge Current, 3mm × 3mm

DFN Package

LTC4061-4.4

Standalone Li-Ion Charger with Thermistor

Interface

4.4V (Max), ±0.4% Float Voltage, Up to 1A Charge Current, 3mm × 3mm

DFN Package

LTC4062

Standalone Linear Li-Ion Battery Charger with

Micropower Comparator

Up to 1A Charge Current, Charges from USB Port, Thermal Regulation

3mm × 3mm DFN Package

LTC4063

Li-Ion Charger with Linear Regulator

Up to 1A Charge Current, 100mA, 125mV LDO, 3mm × 3mm DFN Package

LTC4080

Standalone 500mA Charger with 300mA

Synchronous Buck

For 1-Cell Li-Ion/Polymer Batteries; Trickle Charge; Timer Termination +C/10;

Thermal Regulation, Buck Output: 0.8V to VBAT, Buck Input: 2.7V to 5.5V, 3mm ×

3mm DFN-10 Package

Power Management

LTC3405/LTC3405A 300mA (IOUT), 1.5MHz, Synchronous Step-Down

DC/DC Converter

95% Efﬁciency, VIN: 2.7V to 6V, VOUT = 0.8V, IQ = 20µA, ISD < 1µA,

ThinSOT Package

LTC3406/LTC3406A 600mA (IOUT), 1.5MHz, Synchronous Step-Down

DC/DC Converter

95% Efﬁciency, VIN: 2.5V to 5.5V, VOUT = 0.6V, IQ = 20µA, ISD < 1µA,

ThinSOT Package

LTC3411

1.25A (IOUT), 4MHz, Synchronous Step-Down

DC/DC Converter

95% Efﬁciency, VIN: 2.5V to 5.5V, VOUT = 0.8V, IQ = 60µA, ISD < 1µA,

MS Package

LTC3440

600mA (IOUT), 2MHz, Synchronous Buck-Boost

DC/DC Converter

95% Efﬁciency, VIN: 2.5V to 5.5V, VOUT = 2.5V, IQ = 25µA, ISD < 1µA,

MS Package

LTC4411/LTC4412

Low Loss PowerPath

TM Controller in ThinSOT

Automatic Switching Between DC Sources, Load Sharing, Replaces ORing Diodes

LTC4413

Dual Ideal Diode in DFN

2-Channel Ideal Diode ORing, Low Forward On-Resistance, Low Regulated

Forward Voltage, 2.5V ≤ VIN ≤ 5.5V

ThinSOT and PowerPath are trademarks of Linear Technology Corporation.

RELATED PARTS

TYPICAL APPLICATIO

Li-Ion Battery Charger with 1.5V Buck Regulator

500mA

CBAT

4.7

µF

510

Ω

RPROG

806

Ω

806k

COUT

4.7

µF

4080X TA02

CPL

10pF

715k

LTC4080X

VCC

ACPR

EN_CHRG

EN_BUCK

MODE

BAT

CHRG

PROG

VOUT

(1.5V/300mA)

L1, 1O

µH*

GND

*COILCRAFT LPO1704-103M

R4, 510

Ω

CIN

4.7

µF

VCC

(3.75V

to 5.5V)

4.2V

Li-Ion

BATTERY

Buck Efﬁciency vs Load Current

(VOUT = 1.5V)

LOAD CURRENT (mA)

0.01

0.1

100

1000

100

0.1

0.01

1000

4080X G13

VBAT = 3.8V

VOUT = 1.5V

L = 10

µH

C = 4.7

µF

EFFICIENCY

(Burst)

POWER LOSS

(Burst)

EFFICIENCY

(PWM)

POWER

LOSS

(PWM)

LTC4080X Datasheet(PDF) 20 Page - Linear Technology

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