LTC4065LXEDC#PBF datasheet, PDF

FEATURES

n

LTC4065L/LTC4065LX/

LTC4065L-4.1/LTC4065LX-4.1

Standalone 250mA Li-Ion

Battery Charger in 2

×

2 DFN

DESCRIPTION

The

LTC

®

4065L

is a complete constant-current/constant-

voltage linear charger for single-cell lithium-ion batteries.

Its small size and ability to accurately regulate low charge

currents make the LTC4065L especially well-suited for

portable applications using low capacity rechargeable

lithium-ion cells. Furthermore, LTC4065L is specifically

designed to work within USB power specifications.

The

CHRG

pin indicates when charge current has dropped

to ten percent of its programmed value (C/10). An internal

timer terminates charging according to battery manufac-

turer specifications.

The LTC4065L-4.1/LTC4065LX-4.1 features a constant-

voltage float voltage of 4.1V. This 4.1V version of the

standard LTC4065L/LTC4065LX is intended for back-up

or high ambient temperature applications. Under these

conditions, a reduced float voltage will trade-off initial

cell capacity for the benefit of increased capacity retention

over the life of the battery. A reduced float voltage also

minimizes swelling in prismatic and polymer cells.

When the input supply (wall adapter or USB supply) is

removed, the LTC4065L automatically enters a low current

state, dropping battery drain current to less than 1µA.

With power applied, LTC4065L can be put into shutdown

mode, reducing the supply current to less than 20µA.

The full-featured LTC4065L also includes automatic

recharge, low-battery charge conditioning (trickle

charging) and soft-start (to limit inrush current).

Complete Charge Cycle (180mAh Battery)

LTC4065L and LTC4065LX

110

100

CHARGE CURRENT (mA)

90 CONSTANT

CURRENT

80

70

60

50

40

30

20

10

0

V

CC

= 5V

R

PROG

= 2k

0.5

1

1.5 2 2.5 3

TIME (HOURS)

3.5

4

4.5

CHARGE

TERMINATION

CONSTANT

VOLTAGE

CHRG

TRANSITION

4.3

4.1

3.9

3.7

3.5

3.3

BATTERY VOLTAGE (V)

n

Charge Current Programmable up to 250mA with

5% Accuracy

Complete Linear Charger in 2mm × 2mm DFN Package

C/10 Charge Current Detection Output

Timer Termination

No External MOSFET, Sense Resistor or Blocking

Diode Required

Preset Float Voltage with 0.6% Accuracy:

4.2V for LTC4065L/LTC4065LX

4.1V for LTC4065L-4.1/LTC4065LX-4.1

Constant-Current/Constant-Voltage Operation with

Thermal Feedback to Maximize Charging Rate

Without Risk of Overheating

Charge Current Monitor Output for Gas Gauging

Automatic Recharge

Charges Single Cell Li-Ion Batteries Directly from

USB Port

20µA Supply Current in Shutdown Mode

Available Without Trickle Charge (LTC4065LX/

LTC4065LX-4.1)

Tiny 6-Lead (2mm

×

2mm) DFN Package

Charger for Li-Ion Coin Cell Batteries

Portable MP3 Players, Wireless Headsets

Bluetooth Applications

Multifunction Wristwatches

APPLICATIONS

n

All registered trademarks and trademarks are the property of their respective owners. Protected

by U.S. Patents, including 6522118, 6700364.

TYPICAL APPLICATION

Standalone Li-Ion Battery Charger

V

IN

4.3V TO 5.5V

C1

1µF

100mA

R1

510

V

CC

BAT

LTC4065L

CHRG

PROG

EN

GND

R3

2k

+

4.2V

Li-Ion

BATTERY

4065L TA01

4065 TA02

Rev. D

Document Feedback

For more information

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1

LTC4065L/LTC4065LX/

LTC4065L-4.1/LTC4065LX-4.1

ABSOLUTE MAXIMUM RATINGS

(Note 1)

PIN CONFIGURATION

TOP VIEW

GND 1

CHRG

2

BAT 3

7

6 PROG

5

EN

4 V

CC

V

CC

t < 1ms and Duty Cycle < 1% ..................– 0.3V to 7V

Steady State............................................. –0.3V to 6V

BAT,

CHRG

................................................... –0.3V to 6V

EN,

PROG.........................................–0.3V to V

CC

+ 0.3V

BAT Short-Circuit Duration............................Continuous

BAT Pin Current ...................................................275mA

PROG Pin Current .............................................1.342mA

Junction Temperature (Note 6) ............................. 125°C

Operating Temperature Range (Note 2)....– 40°C to 85°C

Storage Temperature Range................... –65°C to 125°C

DC PACKAGE

6-LEAD (2mm

×

2mm) PLASTIC DFN

T

JMAX

= 125°C,

θ

JA

= 60°C/W (NOTE 3)

EXPOSED PAD (PIN 7) IS GND, MUST BE SOLDERED TO PCB

ORDER INFORMATION

LEAD FREE FINISH

LTC4065LEDC#PBF

LTC4065LXEDC#PBF

LTC4065LEDC-4.1#PBF

TAPE AND REEL

LTC4065LEDC#TRPBF

LTC4065LXEDC#TRPBF

LTC4065LEDC-4.1#TRPBF

PART MARKING

LCBD

LCKS

LGGN

PACKAGE DESCRIPTION

6-Lead (2mm

×

2mm) Plastic DFN

6-Lead (2mm

×

2mm) Plastic DFN

6-Lead (2mm

×

2mm) Plastic DFN

6-Lead (2mm

×

2mm) Plastic DFN

TEMPERATURE RANGE

–40°C to 85°C

LTC4065LXEDC-4.1#PBF LTC4065LXEDC-4.1#TRPBF LHBJ

Contact the factory for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.

Tape and reel specifications.

Some packages are available in 500 unit reels through designated sales channels with #TRMPBF suffix.

LTC4065 Options

PART NUMBER

LTC4065

LTC4065A

LTC4065-4.4

LTC4065L

LTC4065LX

LTC4065L-4.1

LTC4065LX-4.1

FLOAT VOLTAGE

4.2V

4.4V

4.2V

4.1V

CHARGE CURRENT RANGE

40mA TO 750mA

8mA TO 250mA

PIN 5 IS

EN

OR

ACPR?

EN

ACPR

EN

TRICKLE CHARGE?

YES

NO

YES

NO

2

Rev. D

For more information

www.analog.com

LTC4065L/LTC4065LX/

LTC4065L-4.1/LTC4065LX-4.1

The

l

denotes specifications which apply over the full operating

temperature range, otherwise specifications are T

A

= 25°C. V

CC

= 5V, V

BAT

= 3.8V, V

EN

= 0V unless otherwise specified. (Note 2)

SYMBOL PARAMETER

V

CC

I

CC

I

CCMS

I

CCUV

V

FLOAT

V

CC

Supply Voltage

Quiescent V

CC

Supply Current

V

CC

Supply Current in Shutdown

V

CC

Supply Current in Undervoltage

Lockout

V

BAT

Regulated Output Voltage

CONDITIONS

(Note 4)

V

BAT

= 4.5V (Forces I

BAT

and I

PROG

= 0)

V

EN

= 5V

V

CC

< V

BAT

, V

CC

= 3.5V, V

BAT

= 4V

I

BAT

= 2mA

I

BAT

= 2mA, 0°C < T

A

< 85°C

I

BAT

= 2mA (LTC4065L-4.1/LTC4065LX-4.1)

I

BAT

= 2mA, 0°C < T

A

< 85°C (LTC4065L-4.1/LTC4065LX-4.1)

R

PROG

= 13.3k (0.1%), Current Mode

R

PROG

= 1.33k (0.1%), Current Mode

V

EN

= V

CC

V

CC

= 3.5V, V

BAT

= 4V

V

CC

Rising

V

CC

Falling

R

PROG

= 1.33k, I

PROG

= 0.75mA

R

PROG

= 13.3k, I

PROG

= 75µA

(V

CC

– V

BAT

), V

CC

Low to High

(V

CC

– V

BAT

), V

CC

High to Low

V

EN

Rising

V

EN

Falling

l

ELECTRICAL CHARACTERISTICS

MIN

3.75

TYP

120

20

6

MAX

5.5

250

40

11

4.225

4.242

4.125

4.142

17.5

162

1

4

3.8

3.2

1.02

100

45

1

UNITS

V

µA

V

mA

µA

V

mV

V

MΩ

µs

mA

V

mV

Hrs

mV

4.175

4.158

4.075

4.058

13.5

148

–1

0

3.4

2.8

0.98

60

15

0.6

0.9

13

l

4.2

4.1

15.5

155

0

1

3.6

3.0

1

80

30

I

BAT

I

BMS

I

BUV

V

UVLO

V

PROG

V

ASD

V

MSH

V

MSL

R

EN

t

SS

I

TRKL

V

TRKL

V

TRHYS

ΔV

UVCL1

ΔV

UVCL2

t

TIMER

BAT Pin Current

Battery Drain Current in Shutdown

Mode

Battery Drain Current in

Undervoltage Lockout

V

CC

Undervoltage Lockout Voltage

PROG Pin Voltage

Automatic Shutdown Threshold

Voltage

Manual Shutdown High Voltage

Manual Shutdown Low Voltage

EN

Pin Input Resistance

Soft-Start Time

Trickle Charge Current

Trickle Charge Threshold Voltage

Trickle Charge Hysteresis Voltage

(V

CC

– V

BAT

) Undervoltage Current

Limit

Termination Timer

Recharge Time

Low-Battery Trickle Charge Time

1.5

170

15.5

2.9

90

100

190

125

4.5

2.25

1.125

60

3.3

18

3.05

130

300

150

6

3

1.5

105

V

BAT

= 2V, R

PROG

= 1.33k (0.1%) (Note 7)

V

BAT

Rising (Note 7)

(Note 7)

V

FLOAT

– V

RECHRG

, 0°C < T

A

< 85°C

I

BAT

= 90%, R

PROG

= 2k, Programmed Charge Current

I

BAT

= 10%, R

PROG

= 2k, Programmed Charge Current

l

2.7

70

150

80

3

1.5

0.75

ΔV

RECHRG

Recharge Battery Threshold Voltage

V

BAT

= 2.5V

I

CHRG

= 5mA

l

V

CHRG

Pin Output Low Voltage

Rev. D

For more information

www.analog.com

3

LTC4065L/LTC4065LX/

LTC4065L-4.1/LTC4065LX-4.1

The

l

denotes specifications which apply over the full operating

temperature range, otherwise specifications are T

A

= 25°C. V

CC

= 5V, V

BAT

= 3.8V, V

EN

= 0V unless otherwise specified. (Note 2)

SYMBOL PARAMETER

I

CHRG

I

C/10

T

LIM

R

ON

f

BADBAT

D

BADBAT

CHRG

Pin Input Current

End of Charge Indication Current

Level

Junction Temperature in Constant

Temperature Mode

Power FET “ON” Resistance

(Between V

CC

and BAT)

Defective Battery Detection

CHRG

Pulse Frequency

Defective Battery Detection

CHRG

Pulse Frequency Duty Ratio

I

BAT

= 150mA

CONDITIONS

V

BAT

= 4.5V, V

CHRG

= 5V

R

PROG

= 1.33k (Note 5)

l

ELECTRICAL CHARACTERISTICS

MIN

0.08

TYP

0

0.095

115

1.5

2

75

MAX

1

0.11

UNITS

µA

mA/mA

°C

Ω

Hz

%

Note 1:

Stresses beyond those listed under Absolute Maximum Ratings

may cause permanent damage to the device. Exposure to any Absolute

Maximum Rating condition for extended periods may affect device

reliability and lifetime.

Note 2:

The LTC4065L is tested under pulsed load conditions such that

T

J

≈ T

A

. The LTC4065L is guaranteed to meet performance specifica-

tions from 0°C to 70°C. Specifications over the –40°C to 85°C operating

temperature range are assured by design, characterization and correlation

with statistical process controls.

Note 3:

Failure to solder the exposed backside of the package to the PC

board ground plane will result in a thermal resistance much higher than

rated.

Note 4:

Although the LTC4065L functions properly at 3.75V input, full

charge current requires an input voltage greater than the desired final bat-

tery voltage per the ΔV

UVCL1

specification.

Note 5:

I

C/10

is expressed as a fraction of measured full charge current

with indicated PROG resistor.

Note 6:

This IC includes overtemperature protection that is intended

to protect the device during momentary overload conditions. Junction

temperature will exceed 125°C when overtemperature protection is active.

Continuous operation above the specified maximum operating junction

temperature may impair device reliability.

Note 7:

This parameter is not applicable to the LTC4065LX/

LTC4065LX-4.1.

4

Rev. D

For more information

www.analog.com

LTC4065L/LTC4065LX/

LTC4065L-4.1/LTC4065LX-4.1

TYPICAL PERFORMANCE CHARACTERISTICS

Battery Regulation (Float) Voltage

vs Battery Charge Current

4.24 V = 5V

CC

T

A

= 25°C

4.22

R

PROG

= 800

4.20

4.18

V

FLOAT

(V)

4.16

4.14

4.12

4.10

4.08

4.06

0

50

100

LTC4065L-4.1

4.24

4.22

LTC4065L

V

FLOAT

(V)

4.20

4.18

4.16

4.14

4.12

4.10

4.08

250

4065L G01

Battery Regulation (Float) Voltage

vs Temperature

4.24

4.22

LTC4065L

V

FLOAT

(V)

4.20

4.18

4.16

4.14

4.12

LTC4065L-4.1

4.10

4.08

75

100

4065L G02

Battery Regulation (Float) Voltage

vs Supply Voltage

T

A

= 25°C

I

BAT

= 2mA

R

PROG

= 800

LTC4065L

LTC4065L-4.1

150

I

BAT

(mA)

200

4.06

–50

– 25

50

25

TEMPERATURE (°C)

0

4.06

4

5

4.5

5.5

SUPPLY VOLTAGE (V)

6

4065L G03

Charge Current vs Supply Voltage

(Constant Current Mode)

30

25

20

I

BAT

(mA)

I

BAT

(mA)

15

10

5

0

R

PROG

= 13.3k

V

BAT

= 3.8V

T

A

= 25°C

300

250

200

Charge Current vs Battery Voltage

V

CC

= 5V

T

A

= 25°C

R

PROG

= 800

300

LTC4065L

250

200

I

BAT

(mA)

150

100

50

LTC4065L-4.1

0

1

2

3

V

BAT

(V)

4

5

4065L G05

Charge Current vs Temperature

with Thermal Regulation

(Constant Current Mode)

150

100

50

0

THERMAL CONTROL

LOOP IN OPERATION

4

4.5

5

5.5

SUPPLY VOLTAGE (V)

6

4065L G04

0

–50

V

CC

= 5V

V

BAT

= 3.8V

R

PROG

= 800

0

100

50

TEMPERATURE (°C)

150

4065L G06

PROG Pin Voltage vs Temperature

(Constant Current Mode)

1.02

V

CC

= 5V

V

BAT

= 3.8V

R

PROG

= 13.3k

1.2

1.0

0.8

V

PROG

(V)

V

PROG

(V)

1.00

0.6

0.4

0.99

0.2

0.98

–50

0

PROG Pin Voltage

vs Charge Current

V

CC

= 5V

T

A

= 25°C

R

PROG

= 800

2.0

Power FET On Resistance

vs Temperature

V

CC

= 4V

I

BAT

= 150mA

1.01

R

DS

( )

0

50

100

150

I

BAT

(mA)

200

250

4065L G08

1.8

1.6

1.4

1.2

1.0

–50

–25

50

25

0

TEMPERATURE (°C)

75

100

4065L G07

–25

0

25

50

TEMPERATURE (°C)

75

100

4065L G09

Rev. D

For more information

www.analog.com

5

Parameter Name	Attribute value
Brand Name	Linear Technology
Is it Rohs certified?	conform to
Maker	Linear ( ADI )
Parts packaging code	DFN
package instruction	HVSON, SOLCC6,.08,20
Contacts	6
Manufacturer packaging code	DC6
Reach Compliance Code	compli
ECCN code	EAR99
Other features	SEATED HT-CALCULATED
Adjustable threshold	NO
Analog Integrated Circuits - Other Types	BATTERY CHARGE CONTROLLER
JESD-30 code	S-PDSO-N6
JESD-609 code	e3
length	2 mm
Humidity sensitivity level	1
Number of functions	1
Number of terminals	6
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Package body material	PLASTIC/EPOXY
encapsulated code	HVSON
Encapsulate equivalent code	SOLCC6,.08,20
Package shape	SQUARE
Package form	SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Celsius)	260
power supply	5 V
Certification status	Not Qualified
Maximum seat height	0.8 mm
Maximum supply current (Isup)	0.25 mA
Maximum supply voltage (Vsup)	5.5 V
Minimum supply voltage (Vsup)	3.75 V
Nominal supply voltage (Vsup)	5 V
surface mount	YES
technology	CMOS
Temperature level	INDUSTRIAL
Terminal surface	Matte Tin (Sn)
Terminal form	NO LEAD
Terminal pitch	0.5 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	30
width	2 mm

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