LTC4089-3
USB Power Manager with
High Voltage Switching Charger
FeAtures
n
n
Description
The
LTC
®
4089-3
is a USB power manager plus high volt-
age Li-Ion battery charger. This device controls the total
current used by the USB peripheral for operation and
battery charging. Battery charge current is automatically
reduced such that the sum of the load current and the
charge current does not exceed the programmed input
current limit. The LTC4089-3 also accommodates high
voltage power supplies, such as 12V AC/DC wall adapters,
Firewire, or automotive power.
The LTC4089-3 provides an adaptive output that tracks
the battery voltage for high efficiency charging from the
high voltage input. This 3.95V version of the the standard
LTC4089 is intended for applications which have extended
battery lifetime requirements or those that require high
temperature (approximately >60°C) operation or stor-
age. 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. The charge
current is programmable and an end-of-charge status
output (CHRG) indicates full charge. Also featured are
programmable total charge time, an NTC thermistor input
used to monitor battery temperature while charging and
automatic recharging of the battery.
L,
LT, LTC and LTM are registered trademarks and Bat-Track, PowerPath and ThinSOT are
trademarks of Analog Devices, Inc. All other trademarks are the property of their respective
owners. Protected by U.S. Patents including 6522118, 6700364, 7733061.
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Seamless Transition Between Power Sources: Li-Ion
Battery, USB, and 6V to 36V External Supply
High Efficiency 1.2A Charger from 6V to 36V Input
with Adaptive Output Control
3.95V Float Voltage Improves Battery Lifespan and
High Temperature Safety Margin
Load Dependent Charging from USB Input
Guarantees Current Compliance
215m Internal Ideal Diode plus Optional External
Ideal Diode Controller Provides Low Loss Power
Path When External Supply/USB Not Present
Constant-Current/Constant-Voltage Operation with
Thermal Feedback to Maximize Charging Rate with-
out Risk of Overheating
Selectable 100% or 20% Current Limit (e.g.,
500mA/100mA) from USB Input
Preset 3.95V Charge Voltage with ±0.8% Accuracy
C/10 Charge Current Detection Output
NTC Thermistor Input for Temperature Qualified
Charging
Tiny (6mm
×
3mm
×
0.75mm) 22-Lead DFN Package
ApplicAtions
n
Portable USB Devices—GPS Receivers, Cameras,
MP3 Players, PDAs
typicAl ApplicAtion
0.1µF
HIGH (6V-36V)
VOLTAGE INPUT
5V (NOM)
FROM USB
CABLE V
BUS
HVIN
1µF
HVEN
HVOUT
4.7µF
EFFICIENCY (%)
IN
LTC4089-3
OUT
4.7µF
TIMER
0.1µF
BAT
HVPR
1k
TO LDOs
R
EGS
, ETC.
BOOST
SW
10µH
90
10µF
LTC4089 High Voltage
Battery Charger Efficiency
CC CURRENT = 970mA
85 NO OUTPUT LOAD
FIGURE 10 SCHEMATIC
80 WITH R
PROG
= 52k
75
70
65
60
55
50
45
40
2.5
HVIN = 8V
HVIN = 12V
HVIN = 24V
HVIN = 36V
3.5
3
4
BATTERY VOLTAGE (V)
4.5
40893 TA01b
+
CLPROG GND PROG
2k
100k
Li-Ion BATTERY
V
OUT
(TYP)
V
BAT
+ 0.3V
5V
V
BAT
AVAILABLE INPUT
HV INPUT
USB ONLY
BAT ONLY
40893 TAO1a
40893fa
For more information
www.linear.com/LTC4089-3
1
LTC4089-3
Absolute MAxiMuM rAtings
(Notes 1, 2, 3, 4, 5)
pin conFigurAtion
TOP VIEW
GND
GND
HVOUT
V
C
NTC
VNTC
HVPR
CHRG
PROG
1
2
3
4
5
6
7
8
9
23
22 HVEN
21 HVIN
20 BOOST
19 SW
18 HVOUT
17 TIMER
16 SUSP
15 HPWR
14 CLPROG
13 OUT
12 IN
Terminal Voltage
BOOST ...................................................... –0.3V to 50V
BOOST above SW .....................................................25V
HVIN, HVEN .............................................. –0.3V to 40V
IN, OUT, HVOUT
t < 1ms and Duty Cycle < 1% ................... –0.3V to 7V
DC............................................................ –0.3V to 6V
BAT .............................................................. –0.3V to 6V
NTC, TIMER, PROG, CLPROG .......–0.3V to (V
CC
+ 0.3V)
CHRG,
HPWR, SUSP,
HVPR
......................... –0.3V to 6V
Pin Current, DC
IN, OUT, BAT (Note 6) ..............................................2.5A
Operating Temperature Range .................–40°C to 85°C
Maximum Operating Junction Temperature ...........110°C
Storage Temperature Range .................. –65°C to 150°C
GATE 10
BAT 11
DJC PACKAGE
22-LEAD (6mm
×
3mm) PLASTIC DFN
T
JMAX
= 110°C,
θ
JA
= 4°C/W
EXPOSED PAD (PIN 23) IS GND, MUST BE SOLDERED TO PCB
orDer inForMAtion
LEAD FREE FINISH
LTC4089EDJC-3#PBF
TAPE AND REEL
http://www.linear.com/product/LTC4089-3#orderinfo
PART MARKING
40893
PACKAGE DESCRIPTION
22-Lead (6mm
×
3mm) Plastic DFN
TEMPERATURE RANGE
–40°C to 85°C
LTC4089EDJC-3#TRPBF
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/.
Some packages are available in 500 unit reels through
designated sales channels with #TRMPBF suffix.
ltc4089 options
PART NUMBER
LTC4089
LTC4089-1
LTC4089-3
LTC4089-5
FLOAT VOLTAGE
4.2V
4.1V
3.95V
4.2V
NTC HOT THRESHOLD
29% V
VNTC
32.6% V
VNTC
32.6% V
VNTC
29% V
VNTC
Bat-Track™ ADAPTIVE HV OUTPUT
Yes
No
Yes
No
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. HVIN = 12V, BOOST = 17V, V
IN
= 5V, V
BAT
= 3.7V, HVEN = 12V,
HPWR = 5V, R
PROG
= 100k, R
CLPROG
= 2k, SUSP = 0V, unless otherwise noted.
SYMBOL
PARAMETER
USB Input Current Limit
V
IN
USB Input Supply Voltage
I
IN
Input Bias Current
CONDITIONS
IN
I
BAT
= 0 (Note 7)
Suspend Mode; SUSP = 5V
l
l
l
electricAl chArActeristics
MIN
4.35
TYP
MAX
5.5
1
100
UNITS
V
mA
µA
40893fa
0.5
50
2
For more information
www.linear.com/LTC4089-3
LTC4089-3
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. HVIN = 12V, BOOST = 17V, V
IN
= 5V, V
BAT
= 3.7V, HVEN = 12V,
HPWR = 5V, R
PROG
= 100k, R
CLPROG
= 2k, SUSP = 0V, unless otherwise noted.
SYMBOL
I
LIM
I
IN(MAX)
R
ON
V
CLPROG
I
SS
V
CLEN
PARAMETER
Current Limit
Maximum Input Current Limit
ON Resistance V
IN
to V
OUT
CLPROG Pin Voltage
CONDITIONS
R
CLPROG
= 2k, HPWR = 5V
R
CLPROG
= 2k, HPWR = 0V
(Note 8)
I
OUT
= 80mA Load
R
CLPROG
= 2k
R
CLPROG
= 1k
IN
(V
IN
– V
OUT
) V
IN
Rising
(V
IN
– V
OUT
) V
IN
Falling
V
IN
Powers Part, Rising Threshold
V
IN
Rising – V
IN
Falling
l
l
electricAl chArActeristics
MIN
475
90
l
l
0.98
0.98
20
–80
3.6
Soft-Start Inrush Current
Input Current Limit Enable
Threshold Voltage (V
IN
– V
OUT
)
V
UVLO
Input Undervoltage Lockout
dV
UVLO
Input Undervoltage Lockout
Hysteresis
High Voltage Regulator
V
HVIN
HVIN Supply Voltage
I
HVIN
HVIN Bias Current
V
OUT
V
HVUVLO
f
SW
Output Voltage with HVIN Present
High Voltage Input Undervoltage
Lockout
Switching Frequency
l
TYP
500
100
2.4
0.215
1.00
1.00
5
50
–50
3.8
130
MAX
525
110
UNITS
mA
mA
A
V
V
mA/µs
mV
mV
V
mV
1.02
1.02
80
–20
4
6
Not Switching
Shutdown; HVEN = 0V
Assumes HVOUT to OUT Connection
V
HVIN
Rising
V
HVOUT
> 3.95V
V
HVOUT
= 0V
l
3.45
1.9
0.01
V
BAT
+0.3
4.7
750
35
95
1.95
330
1.85
30
36
2.5
2
4.6
5
815
V
mA
µA
V
V
kHz
kHz
%
A
mV
µA
V
mA
V
µA
µA
µA
V
V
mA
mA
A
V
V
mA/mA
mA
V
mV
mV
mV
%
%
40893fa
685
88
1.5
DC
MAX
Maximum Duty Cycle
I
SW(MAX)
Switch Current Limit
V
SAT
Switch V
CESAT
I
LK
Switch Leakage Current
V
SWD
Minimum Boost Voltage Above SW
I
BST
BOOST Pin Current
Battery Management
V
BAT
Input Voltage
I
BAT
Battery Drain Current
V
FLOAT
I
CHG
I
CHG(MAX)
V
PROG
k
EOC
I
TRIKL
V
TRIKL
V
CEN
V
RECHRG
t
TIMER
Regulated Output Voltage
Current Mode Charge Current
Maximum Charge Current
PROG Pin Voltage
Ratio of End-of-Charge Current to
Charge Current
Trickle Charge Current
Trickle Charge Threshold Voltage
Charger Enable Threshold Voltage
(Note 9)
I
SW
= 1A
I
SW
= 1A
I
SW
= 1A
BAT
V
BAT
= 4.05V, Charging Stopped
Suspend Mode; SUSP = 5V
V
HVIN
= V
IN
= 0V, BAT Powers OUT, No Load
I
BAT
= 2mA
I
BAT
= 2mA; (0°C – 85°C)
R
PROG
= 100k, No Load
R
PROG
= 50k, No Load; (0°C – 85°C)
(Note 8)
R
PROG
= 100k
R
PROG
= 50k
V
BAT
= V
FLOAT
(3.95V)
V
BAT
= 2V, R
PROG
= 100k
l
2.3
2
2.2
50
4.3
27
35
100
3.985
3.990
535
1080
1.02
1.02
0.11
60
3
l
l
l
l
3.915
3.910
465
900
0.98
0.98
0.085
35
2.75
l
l
l
15
22
60
3.95
3.95
500
1000
1.2
1.00
1.00
0.1
50
2.9
55
80
95
50
(V
OUT
– V
BAT
) Falling; V
BAT
= 4V
(V
OUT
– V
BAT
) Rising; V
BAT
= 4V
Recharge Battery Threshold Voltage V
FLOAT
– V
RECHRG
TIMER Accuracy
V
BAT
= 4.05V
Recharge Time
Percent of Total Charge Time
l
60
–10
130
10
For more information
www.linear.com/LTC4089-3
3
LTC4089-3
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. HVIN = 12V, BOOST = 17V, V
IN
= 5V, V
BAT
= 3.7V, HVEN = 12V,
HPWR = 5V, R
PROG
= 100k, R
CLPROG
= 2k, SUSP = 0V, unless otherwise noted.
PARAMETER
Low Battery Trickle Charge Time
T
LIM
Junction Temperature in Constant
Temperature Mode
Internal Ideal Diode
R
FWD
Incremental Resistance, V
ON
Regulation
R
DIO(ON)
ON Resistance V
BAT
to V
OUT
V
FWD
Voltage Forward Drop (V
BAT
- V
OUT
)
Diode Disable Battery Voltage
Load Current Limit, for V
ON
Regulation
I
D(MAX)
Diode Current Limit
External Ideal Diode
V
FWD(EXT)
External Diode Forward Voltage
Logic
V
OL
Output Low Voltage (CHRG,
HVPR)
V
IH
Input High Voltage
V
IL
Input Low Voltage
I
PULLDN
Logic Input Pull Down Current
I
HVEN
HVEN Pin Bias Current
V
CHG(SD)
I
CHG(SD)
NTC
I
VNTC
V
VNTC
I
NTC
V
COLD
V
HOT
V
DIS
Charger Shutdown Threshold
Voltage on TIMER
Charger Shutdown Pull-Up Current
on TIMER
VNTC Pin Current
VNTC Bias Voltage
NTC Input Leakage Current
Cold Temperature Fault Threshold
Voltage
Hot Temperature Fault Threshold
Voltage
NTC Disable Voltage
V
OFF
I
FWD
SYMBOL
CONDITIONS
Percent of Total Charge Time, V
BAT
< 2.8V
MIN
TYP
25
105
MAX
UNITS
%
°C
electricAl chArActeristics
I
BAT
= 100mA
I
BAT
= 600mA
I
BAT
= 5mA
I
BAT
= 100mA
I
BAT
= 600mA
125
215
30
55
160
2.8
550
2.2
20
m
m
mV
mV
mV
V
mA
A
mV
0.4
0.3
V
V
V
µA
µA
µA
V
µA
l
10
50
I
SINK
= 5mA
HVEN, SUSP HPWR Pin Low to High
,
HVEN, SUSP HPWR Pin High to Low
,
SUSP HPWR
,
V
HVEN
= 2.3V
V
HVEN
= 0V
l
0.1
2.3
2
6
0.01
l
0.14
5
14
20
0.1
0.4
V
TIMER
= 0V
l
V
VNTC
= 2.5V
I
VNTC
= 500µA
V
NTC
= 1V
Rising Threshold
Hysteresis
Falling Threshold
Hysteresis
NTC Input Voltage to GND (Falling)
Hysteresis
l
1.4
4.4
l
75
2.5
4.85
0
0.738•V
VNTC
0.018•V
VNTC
0.326•V
VNTC
0.015•V
VNTC
100
35
3.5
±1
125
mA
V
µA
V
V
V
V
mV
mV
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:
V
CC
is the greater of V
IN
, V
OUT
or V
BAT
Note 3:
All voltage values are with respect to GND.
Note 4:
This IC includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperatures will exceed 110°C when overtemperature protection is
active. Continuous operation above the specified maximum operating
junction temperature may result in device degradation or failure.
Note 5:
The LTC4089-3 is guaranteed to meet specified performance from
0°C to 85°C and are designed, characterized and expected to meet these
extended temperature limits, but are not tested at –40°C and 85°C.
Note 6:
Guaranteed by long term current density limitations.
Note 7:
Total input current is equal to this specification plus 1.002
•
I
BAT
where I
BAT
is the charge current.
Note 8:
Accuracy of programmed current may degrade for currents greater
than 1.5A.
Note 9:
Current limit guaranteed by design and/or correlation to static test.
Slope compensation reduces current limit at high duty cycle.
40893fa
4
For more information
www.linear.com/LTC4089-3
LTC4089-3
typicAl perForMAnce chArActeristics
V
FLOAT
Load Regulation
4.05
4.00
3.95
V
FLOAT
(V)
V
FLOAT
(V)
3.90
3.85
3.80
3.75
R
PROG
= 34k
3.970
3.965
3.960
3.955
3.950
3.945
3.940
3.935
0
200
400
600
I
BAT
(mA)
800
1000
40893 G01
T
A
= 25°C, unless otherwise specified.
Battery Current and Voltage
vs Time
5
4
V
BAT
, V
OUT
, V
CHRG
(V)
V
BAT
V
OUT
V
CHRG
I
BAT
1.5
1.2
Battery Regulation (Float)
Voltage vs Temperature
V
IN
= 5V
I
BAT
= 2mA
3
C/10
2
0.9
0.6
I
BAT
(A)
3.930
–50
–25
50
25
TEMPERATURE (°C)
0
75
100
40893 G02
1 1250mAh
HV
IN
= 12V
R
PROG
= 50k
0
50
0
0.3
TERMINATION
100
TIME (MIN)
40893 G03
150
0
200
Charging from USB, I
BAT
vs V
BAT
V
IN
= 5V
V
OUT
= NO LOAD
500 R
PROG
= 100k
R
CLPROG
= 2k
HPWR = 5V
400
I
BAT
(mA)
I
BAT
(mA)
300
200
100
0
600
Charge Current vs Temperature
(Thermal Regulation)
600
500
400
I
OUT
(mA)
300
200
100 V
IN
= 5V
V
BAT
= 3.5V
θ
JA
= 50°C/W
0
50
25
75
–50 –25
0
TEMPERATURE (°C)
1000
Ideal Diode Current vs Forward
Voltage and Temperature
(No External Device)
V
BAT
= 3.7V
900 V
IN
= 0V
800
700
600
500
400
300
200
100
100
125
0
0
50
100
V
FWD
(mV)
150
–50°C
0°C
50°C
100°C
200
40893 G06
0
0.5
1
1.5
2 2.5
V
BAT
(V)
3
3.5
4
4.5
40893 G05
40893 G04
Ideal Diode Current vs Forward
Voltage and Temperature with
External Device
5000
V
BAT
= 3.7V
4500 V
IN
= 0V
Si2333 PFET
4000
EFFICIENCY (%)
3500
I
OUT
(mA)
3000
2500
2000
1500
1000
500
0
0
20
60
40
V
FWD
(mV)
80
–50°C
0°C
50°C
100°C
100
40853 G07
High Voltage Regulator Efficiency
vs Output Load
100
95
90
85
80
75
70
65
60
55
50
0
0.2
0.6
0.4
I
OUT
(A)
HVIN = 8V
HVIN = 12V
HVIN = 24V
HVIN = 36V
0.8
1.0
40893 G08
FIGURE 10 SCHEMATIC
V
BAT
= 4.21V (I
BAT
= 0)
40893fa
For more information
www.linear.com/LTC4089-3
5
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