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LTC4061EDD#TRPBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20
LTC4061
1
4061fd
Typical applicaTion
FeaTures DescripTion
Standalone Linear Li-Ion
Battery Charger with
Thermistor Input
The LTC
®
4061 is a full-featured, flexible, standalone linear
charger for single-cell Lithium-Ion batteries. It is capable
of operating within USB power specifications.
Both programmable time and programmable current
based termination schemes are available. Furthermore,
the CHRG open-drain status pin can be programmed to
indicate the battery charge state according to the needs
of the application. Additional safety features designed
to maximize battery lifetime and reliability include NTC
battery temperature sensing and the SmartStart charg-
ing algorithm.
No external sense resistor or external blocking diode is
required for charging due to the internal MOSFET archi-
tecture. Internal thermal feedback regulates the charge
current to maintain a constant die temperature during
high power operation or high ambient temperature condi-
tions. The charge current is programmed with an external
resistor. With power applied, the LTC4061 can be put into
shutdown mode to reduce the supply current to 20µA and
the battery drain current to less than 5µA.
Other features include smart recharge, USB C/5 cur-
rent programming input, undervoltage lockout and AC
Present logic output.
applicaTions
n
Charge Current Programmable Up to 1A
n
Charges Single-Cell Li-Ion Batteries Directly from
USB Port
n
Preset Charge Voltage with ±0.35% Accuracy
n
Thermistor Input for Temperature Qualified
Charging
n
Input Supply Present Logic Output
n
Thermal Regulation Maximizes Charge Rate
Without Risk of Overheating
n
Programmable Charge Current Detection/
Termination
n
Programmable Charge Termination Timer
n
Smart Pulsing Error Feature
n
SmartStart™ Prolongs Battery Life
n
20µA Charger Quiescent Current in Shutdown
n
Available in a Low Profile (0.75mm) 10-Lead
(3mm × 3mm) DFN Package
n
Handheld Computers
n
Portable MP3 Players
n
Digital Cameras
800mA Single-Cell Li-Ion Battery Charger
(C/10 Termination)
Complete Charge Cycle (1100mAh Battery)
V
CC
TIMER
PROG
I
DET
BAT
800mA
V
IN
4.3V TO 8V
4.2V
SINGLE-CELL
Li-Ion BATTERY
+
619Ω
1µF
ACPR
NTC
LTC4061
GND
4061 TA01a
CHRG
EN
C/5
TIME (HOURS)
0 0.5 1.5 2.5 3.0
CHARGE CURRENT (mA)
BATTERY VOLTAGE (V)
2.0
900
800
700
600
500
400
300
200
100
0
4.3
4.2
4.1
4.0
3.9
3.8
3.7
3.6
3.5
3.4
4061 TA01b
1.0
BATTERY
CURRENT
BATTERY
VOLTAGE
V
CC
= 5V
T
A
= 25°C
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
SmartStart, ThinSOT and PowerPath are trademarks of Linear Technology Corporation. All
other trademarks are the property of their respective owners. Protected by U.S. Patents
including 6522118.
LTC4061
2
4061fd
pin conFiguraTionabsoluTe MaxiMuM raTings
Input Supply Voltage (V
CC
) ........................ –0.3V to 10V
EN ,
ACPR, CHRG, NTC, PROG,
C/5, BAT ..................................................... –0.3V to 10V
TIMER, I
DET
.................................... –0.3V to V
CC
+ 0.3V
BAT Short-Circuit Duration ...........................Continuous
V
CC
Pin Current ...........................................................1A
BAT Pin Current ..........................................................1A
Maximum Junction Temperature (Note 5) ............ 125°C
Operating Temperature Range (Note 2) ...–40°C to 85°C
Storage Temperature Range .................. –65°C to 125°C
(Note 1)
TOP VIEW
10
9
6
7
8
11
4
5
3
2
1
V
CC
PROG
I
DET
EN
C/5
BAT
NTC
TIMER
ACPR
CHRG
DD PACKAGE
10-LEAD (3mm s 3mm) PLASTIC DFN
T
JMAX
= 125°C, θ
JA
= 40°C/W (NOTE 3)
EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB
orDer inForMaTion
LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC4061EDD#PBF LTC4061EDD#TRPBF LBJS
10-Lead (3mm × 3mm) 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/
elecTrical characTerisTics
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
CC
Input Supply Voltage
l
4.3 8 V
I
CC
Input Supply Current Charge Mode (Note 4), R
PROG
= 10k
Standby Mode, Charge Terminated
Shutdown (EN = 5V, V
CC
< V
BAT
or V
CC
< V
UV
)
l
l
l
240
130
20
500
300
50
µA
µA
µA
V
FLOAT
V
BAT
Regulated Output Voltage
0 ≤ T
A
≤ 85°C
4.185
4.175
4.2
4.2
4.215
4.225
V
V
I
BAT
BAT Pin Current R
PROG
= 10k, Constant Current Mode
R
PROG
= 1.25k, Constant Current Mode
Standby Mode, Charge Terminated, V
BAT
= 4.2V
Shutdown Mode, V
BAT
= 4.2V
l
l
l
l
93
760
100
800
–3.5
±1
107
840
–7
±5
mA
mA
µA
µA
V
PROG
PROG Pin Voltage R
PROG
= 10k, Constant Current Mode
R
PROG
= 1.25k, Constant Current Mode
0.97
0.97
1
1
1.03
1.03
V
V
V
ACPR
ACPR Output Low Voltage I
ACPR
= 5mA 0.1 0.25 V
V
CHRG
CHRG Output Low Voltage I
CHRG
= 5mA 0.1 0.25 V
I
TRIKL
Trickle Charge Current V
BAT
< V
TRIKL
, R
PROG
= 10k
V
BAT
< V
TRIKL
, R
PROG
= 1.25k
6
60
10
80
14
100
mA
mA
V
TRIKL
Trickle Charge Threshold Voltage V
BAT
Rising
Hysteresis
2.8 2.9
100
3 V
mV
V
UV
V
CC
Undervoltage Lockout Voltage From Low to High
Hysteresis
3.7 3.8
200
3.9 V
mV
V
ASD
V
CC
– V
BAT
Lockout Threshold Voltage V
CC
from Low to High, V
BAT
= 4.3V
V
CC
from High to Low, V
BAT
= 4.3V
145
10
190
45
230
75
mV
mV
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
CC
= 5V, unless otherwise noted.
LTC4061
3
4061fd
elecTrical characTerisTics
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 LTC4061 is guaranteed to meet performance specifications
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 correctly solder the exposed pad of the package to the
PC board will result in a thermal resistance much higher than 40°C/W.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
R
EN
EN Pin Pull-Down Resistor
l
2 3.4 5 MΩ
V
EN
EN Input Threshold Voltage EN Rising, 4.3V < V
CC
< 8V
Hysteresis
0.4 0.7
70
1 V
mV
V
CT
Charge Termination Mode Threshold
Voltage
V
TIMER
from High to Low
Hysteresis
0.4 0.7
50
1 V
mV
V
UT
User Termination Mode Threshold
Voltage
V
TIMER
from Low to High
Hysteresis
3.9 4.2
50
V
mV
I
DETECT
Charge Current Detection Threshold R
DET
= 1k, 0 ≤ T
A
≤ 85°C
R
DET
= 2k, 0 ≤ T
A
≤ 85°C
R
DET
= 10k, 0 ≤ T
A
≤ 85°C
R
DET
= 20k, 0 ≤ T
A
≤ 85°C
90
45
8
3.8
100
50
10
5
110
55
12
6.2
mA
mA
mA
mA
ΔV
RECHRG
Recharge Threshold Voltage V
FLOAT
– V
RECHRG
, 0 ≤ TA ≤ 85°C 65 100 135 mV
t
SS
Soft-Start Time I
BAT
from 0 to I
CHRG
100 µs
t
TERM
Termination Comparator Filter Time Current Termination Mode 0.8 1.5 2.5 ms
t
RECHRG
Recharge Comparator Filter Time 3 7 14 ms
t
TIMER
Charge Cycle Time C
TIMER
= 0.1µF 2.55 3 3.45 hr
R
C/5
C/5 Pin Pull-Down Resistor
l
2 3.4 5 MΩ
V
C/5
C/5 Input Threshold Voltage C/5 Rising, 4.3V < V
CC
< 8V
Hysteresis
0.4 0.7
70
1 V
mV
V
NTC-HOT
NTC Pin Hot Threshold Voltage V
NTC
Falling
V
NTC
Rising
0.35 • V
CC
0.36 • V
CC
V
V
V
NTC-COLD
NTC Pin Cold Threshold Voltage V
NTC
Rising
V
NTC
Falling
0.76 • V
CC
0.75 • V
CC
V
V
V
NTC-DIS
NTC Pin Disable Threshold Voltage V
NTC
Falling
Hysteresis
70 85
50
100 mV
mV
f
CHRG
NTC Fault Pulsing Frequency Current/User Termination Mode
Time Termination Mode C
TIMER
= 0.1µF
1
1.5
1.5
2
Hz
Hz
T
LIM
Junction Temperature in Constant
Temperature Mode
105 °C
R
ON
Power FET On-Resistance
(Between V
CC
and
BAT
)
V
BAT
= 3.85V, I
CC
= 175mA, R
PROG
= 2k 375 mΩ
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
CC
= 5V, unless otherwise noted.
Note 4: Supply current includes PROG pin current and I
DET
pin current
(approximately 100µA each) but does not include any current delivered to
the battery through the BAT pin (approximately 100mA).
Note
5: This IC includes overtemperature protection that is intended
to protect the device during momentary overload conditions.
Overtemperature protection will become active at a junction temperature
greater than the maximum operating temperature. Continuous operation
above the specified maximum operating junction temperature may impair
device reliability.
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20

LTC4061EDD#TRPBF

Mfr. #:
Buy LTC4061EDD#TRPBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Battery Management St&alone Lin Li-Ion Bat Chr w/ Thermisto
Lifecycle:
New from this manufacturer.
Delivery:
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