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LTC4065LEDC-4.1#TRPBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18
LTC4065L/
LTC4065LX/LTC4065L-4.1
1
4065lfb
TYPICAL APPLICATION
FEATURES DESCRIPTION
Standalone 250mA Li-Ion
Battery Charger in 2 × 2 DFN
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 features a constant-voltage float voltage
of 4.1V. This 4.1V version of the standard LTC4065L is in-
tended 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 re-
charge, low-battery charge conditioning (trickle charging)
and soft-start (to limit inrush current).
Standalone Li-Ion Battery Charger
Complete Charge Cycle (180mAh Battery)
LTC4065L and LTC4065LX
APPLICATIONS
n
Charge Current Programmable up to 250mA with
5% Accuracy
n
Complete Linear Charger in 2mm × 2mm DFN Package
n
C/10 Charge Current Detection Output
n
Timer Termination
n
No External MOSFET, Sense Resistor or Blocking
Diode Required
n
Preset Float Voltage with 0.6% Accuracy:
4.2V for LTC4065L/LTC4065LX
4.1V for LTC4065L-4.1
n
Constant-Current/Constant-Voltage Operation with
Thermal Feedback to Maximize Charging Rate
Without Risk of Overheating
n
Charge Current Monitor Output for Gas Gauging
n
Automatic Recharge
n
Charges Single Cell Li-Ion Batteries Directly from
USB Port
n
20μA Supply Current in Shutdown Mode
n
Available Without Trickle Charge (LTC4065LX)
n
Tiny 6-Lead (2mm × 2mm) DFN Package
n
Charger for Li-Ion Coin Cell Batteries
n
Portable MP3 Players, Wireless Headsets
n
Bluetooth Applications
n
Multifunction Wristwatches
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
Protected by U.S. Patents, including 6522118, 6700364.
+
V
CC
R1
510Ω
100mA
R3
2k
4065L TA01
4.2V
Li-Ion
BATTERY
V
IN
4.3V TO 5.5V
C1
1μF
LTC4065L
CHRG
EN
BAT
PROG
GND
TIME (HOURS)
0
CHARGE CURRENT (mA)
BATTERY VOLTAGE (V)
30
90
100
110
1
2
2.5
4065 TA02
10
70
50
20
80
0
60
40
4.3
3.5
4.1
3.3
3.9
3.7
0.5
1.5
3 3.5 4
4.5
CONSTANT
CURRENT
CONSTANT
VOLTAGE
CHRG
TRANSITION
CHARGE
TERMINATION
V
CC
= 5V
R
PROG
= 2k
LTC4065L/
LTC4065LX/LTC4065L-4.1
2
4065lfb
PIN CONFIGURATIONABSOLUTE MAXIMUM RATINGS
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
(Note 1)
TOP VIEW
7
DC PACKAGE
6-LEAD (2mm × 2mm) PLASTIC DFN
4
5
6
3
2
1GND
CHRG
BAT
PROG
EN
V
CC
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 TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC4065LEDC#PBF LTC4065LEDC#TRPBF LCBD 6-Lead (2mm × 2mm) Plastic DFN –40°C to 85°C
LTC4065LXEDC#PBF LTC4065LXEDC#TRPBF LCKS 6-Lead (2mm × 2mm) Plastic DFN –40°C to 85°C
LTC4065LEDC-4.1#PBF LTC4065LEDC-4.1#TRPBF LGGN 6-Lead (2mm × 2mm) Plastic DFN –40°C to 85°C
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Consult LTC Marketing for information on non-standard lead based finish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
LTC4065 Options
PART NUMBER FLOAT VOLTAGE CHARGE CURRENT RANGE PIN 5 IS EN OR ACPR? TRICKLE CHARGE?
LTC4065 4.2V 40mA TO 750mA EN YES
LTC4065A 4.2V 40mA TO 750mA ACPR YES
LTC4065-4.4 4.4V 40mA TO 750mA EN YES
LTC4065L 4.2V 8mA TO 250mA EN YES
LTC4065LX 4.2V 8mA TO 250mA EN NO
LTC4065L-4.1 4.1V 8mA TO 250mA EN YES
LTC4065L/
LTC4065LX/LTC4065L-4.1
3
4065lfb
ELECTRICAL CHARACTERISTICS
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 specifi ed. (Note 2)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
CC
V
CC
Supply Voltage (Note 4)
l
3.75 5.5 V
I
CC
Quiescent V
CC
Supply Current V
BAT
= 4.5V (Forces I
BAT
and I
PROG
= 0)
l
120 250 μA
I
CCMS
V
CC
Supply Current in Shutdown V
EN
= 5V
l
20 40 μA
I
CCUV
V
CC
Supply Current in Undervoltage
Lockout
V
CC
< V
BAT
, V
CC
= 3.5V, V
BAT
= 4V
l
611 μA
V
FLOAT
V
BAT
Regulated Output Voltage I
BAT
= 2mA
I
BAT
= 2mA, 0°C < T
A
< 85°C
I
BAT
= 2mA (LTC4065L-4.1)
I
BAT
= 2mA, 0°C < T
A
< 85°C (LTC4065L-4.1)
4.175
4.158
4.075
4.058
4.2
4.2
4.1
4.1
4.225
4.242
4.125
4.142
V
V
V
V
I
BAT
BAT Pin Current R
PROG
= 13.3k (0.1%), Current Mode
R
PROG
= 1.33k (0.1%), Current Mode
l
l
13.5
148
15.5
155
17.5
162
mA
mA
I
BMS
Battery Drain Current in Shutdown
Mode
V
EN
= V
CC
l
–1 0 1 μA
I
BUV
Battery Drain Current in Undervoltage
Lockout
V
CC
= 3.5V, V
BAT
= 4V
l
014 μA
V
UVLO
V
CC
Undervoltage Lockout Voltage V
CC
Rising
V
CC
Falling
l
l
3.4
2.8
3.6
3.0
3.8
3.2
V
V
V
PROG
PROG Pin Voltage R
PROG
= 1.33k, I
PROG
= 0.75mA
R
PROG
= 13.3k, I
PROG
= 75μA
l
l
0.98
0.98
1
1
1.02
1.02
V
V
V
ASD
Automatic Shutdown Threshold Voltage (V
CC
– V
BAT
), V
CC
Low to High
(V
CC
– V
BAT
), V
CC
High to Low
60
15
80
30
100
45
mV
mV
V
MSH
Manual Shutdown High Voltage V
EN
Rising 1 V
V
MSL
Manual Shutdown Low Voltage V
EN
Falling 0.6 V
R
EN
EN Pin Input Resistance
l
0.9 1.5 3.3 MΩ
t
SS
Soft-Start Time 170 μs
I
TRKL
Trickle Charge Current V
BAT
= 2V, R
PROG
= 1.33k (0.1%) (Note 7) 13 15.5 18 mA
V
TRKL
Trickle Charge Threshold Voltage V
BAT
Rising (Note 7)
l
2.7 2.9 3.05 V
V
TRHYS
Trickle Charge Hysteresis Voltage (Note 7) 90 mV
ΔV
RECHRG
Recharge Battery Threshold Voltage V
FLOAT
– V
RECHRG
, 0°C < T
A
< 85°C 70 100 130 mV
ΔV
UVCL1
ΔV
UVCL2
(V
CC
– V
BAT
) Undervoltage Current
Limit
I
BAT
= 90%, R
PROG
= 2k, Programmed Charge Current
I
BAT
= 10%, R
PROG
= 2k, Programmed Charge Current
150
80
190
125
300
150
mV
mV
t
TIMER
Termination Timer
l
3 4.5 6 Hrs
Recharge Time
l
1.5 2.25 3 Hrs
Low-Battery Trickle Charge Time V
BAT
= 2.5V
l
0.75 1.125 1.5 Hrs
V
CHRG
CHRG Pin Output Low Voltage I
CHRG
= 5mA
l
60 105 mV
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18

LTC4065LEDC-4.1#TRPBF

Mfr. #:
Buy LTC4065LEDC-4.1#TRPBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Battery Management Standalone 250mA Li-Ion Coin Cell Charger
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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