LTC4089-1
USB Power Manager with
High Voltage Switching Charger
Features
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Description
The
LTC
®
4089-1
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 LTC4089-1 also accommodates high
voltage power supplies, such as 12V AC-DC wall adapters,
Firewire, or automotive power.
The LTC4089-1 provides a fixed 5V output from the high
voltage input to charge single cell Li-Ion batteries. The
charge current is programmable and an end-of-charge
status output (CHRG) indicates full charge. Also featured
is programmable total charge time, an NTC thermistor
input used to monitor battery temperature while charging
and automatic recharging of the battery.
L,
LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
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 and 6700364.
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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
Load Dependent Charging from USB Input
Guarantees Current Compliance
215mΩ 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 4.1V 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-Pin DFN Package
applications
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Portable USB Devices—GPS Receivers, Cameras,
MP3 Players, PDAs
typical application
0.1µF
HIGH (6V-36V)
VOLTAGE INPUT
HVIN
1µF
HVEN
HVOUT
4.7µF
LTC4089-1
EFFICIENCY (%)
5V (NOM)
FROM USB
CABLE V
BUS
IN
HVPR
1k
OUT
BAT
TIMER
CLPROG GND PROG
0.1µF
2k
100k
4.7µF
TO LDOs
R
EGS
, ETC.
BOOST
SW
10µH
10µF
90
LTC4089-1 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
V
OUT
(TYP)
5V
5V
V
BAT
AVAILABLE INPUT
HV INPUT (LTC4089-1)
USB ONLY
BAT ONLY
4089-1 TAO1
LTC4089-1
45
40
2.5
+
Li-Ion BATTERY
HVIN = 8V
HVIN = 12V
HVIN = 24V
HVIN = 36V
3.5
3
4
BATTERY VOLTAGE (V)
4.5
4089-1 TA01b
40891fb
For more information
www.linear.com/LTC4089-1
1
LTC4089-1
absolute maximum ratings
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 125°C
(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
GATE 10
BAT 11
DJC PACKAGE
22-LEAD (6mm
×
3mm) PLASTIC DFN
EXPOSED PAD (PIN 23) IS GND
(MUST BE SOLDERED TO PCB)
T
JMAX
= 110°C,
JA
= 40°C/W
orDer inFormation
LEAD FREE FINISH
LTC4089EDJC-1#PBF
TAPE AND REEL
http://www.linear.com/product/LTC4089-1#orderinfo
PART MARKING
40891
PACKAGE DESCRIPTION
22-Lead (6mm
×
3mm) Plastic DFN
TEMPERATURE RANGE
– 40°C to 85°C
LTC4089EDJC-1#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.
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
V
IN
I
IN
I
LIM
I
IN(MAX)
R
ON
V
CLPROG
I
SS
V
CLEN
PARAMETER
USB Input Supply Voltage
Input Bias Current
Current Limit
Maximum Input Current Limit
ON Resistance V
IN
to V
OUT
CLPROG Pin Voltage
Soft-Start Inrush Current
Input Current Limit Enable
Threshold Voltage (V
IN
– V
OUT
)
(V
IN
– V
OUT
) Rising
(V
IN
– V
OUT
) Falling
20
–80
I
BAT
= 0 (Note 7)
Suspend Mode; SUSP = 5V
R
CLPROG
= 2k, HPWR = 5V
R
CLPROG
= 2k, HPWR = 0V
(Note 8)
I
OUT
= 80mA Load
R
CLPROG
= 2k
R
CLPROG
= 1k
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electrical characteristics
CONDITIONS
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MIN
4.35
TYP
MAX
5.5
UNITS
V
mA
µA
mA
mA
A
USB Input Current Limit
0.5
50
475
90
500
100
2.4
0.215
0.98
0.98
1.00
1.00
5
50
–50
80
–20
1.02
1.02
V
V
mA/µs
mV
mV
40891fb
1
100
525
110
2
For more information
www.linear.com/LTC4089-1
LTC4089-1
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
V
UVLO
dV
UVLO
PARAMETER
Input Undervoltage Lockout
Input Undervoltage Lockout
Hysteresis
HVIN Supply Voltage
HVIN Bias Current
Output Voltage with HVIN Present
High Voltage Input Undervoltage
Lockout
Switching Frequency
Maximum Duty Cycle
Switch Current Limit
Switch V
CESAT
Switch Leakage Current
Minimum Boost Voltage Above SW
BOOST Pin Current
Input Voltage
Battery Drain Current
I
SW
= 1A
I
SW
= 1A
BAT
V
BAT
= 4.3V, 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
(4.1V)
V
BAT
= 2V, R
PROG
= 100k
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electrical characteristics
CONDITIONS
V
IN
Powers Part, Rising Threshold
V
IN
Rising – V
IN
Falling
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MIN
3.6
TYP
3.8
130
MAX
4
UNITS
V
mV
High Voltage Regulator
V
HVIN
I
HVIN
V
OUT
V
HVUVLO
f
SW
DC
MAX
I
SW(MAX)
V
SAT
I
LK
V
SWD
I
BST
V
BAT
I
BAT
V
FLOAT
I
CHG
I
CHG(MAX)
V
PROG
k
EOC
I
TRIKL
V
TRIKL
V
CEN
V
RECHRG
t
TIMER
6
Not Switching
Shutdown; HVEN = 0V
Assumes HVOUT to OUT Connection
V
HVIN
Rising
V
HVOUT
> 3.95V
V
HVOUT
= 0V
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36
1.9
0.01
2.5
2
5.15
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
4.85
5
4.7
685
88
1.5
750
35
95
1.95
330
(Note 9)
I
SW
= 1A
2.3
2
1.85
30
2.2
50
4.3
Battery Management
15
22
60
4.066
4.059
465
900
0.98
0.98
0.085
35
2.75
4.100
4.100
500
1000
1.2
1.00
1.00
0.1
50
2.9
55
80
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27
35
100
4.134
4.141
535
1080
1.02
1.02
0.11
60
3
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
(V
OUT
– V
BAT
) Falling; V
BAT
= 4V
(V
OUT
– V
BAT
) Rising; V
BAT
= 4V
65
–10
Recharge Battery Threshold Voltage V
FLOAT
- V
RECHRG
TIMER Accuracy
V
BAT
= 4.3V
Recharge Time
Low Battery Trickle Charge Time
Percent of Total Charge Time
Percent of Total Charge Time, V
BAT
< 2.8V
100
50
25
105
135
10
mV
%
%
%
°C
T
LIM
Junction Temperature in Constant
Temperature Mode
40891fb
For more information
www.linear.com/LTC4089-1
3
LTC4089-1
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
R
FWD
R
DIO,ON
V
FWD
V
OFF
I
FWD
I
D(MAX)
V
FWD, EXT
Logic
V
OL
V
IH
V
IL
I
PULLDN
I
HVEN
V
CHG,SD
I
CHG,SD
NTC
I
VNTC
V
VNTC
I
NTC
V
COLD
V
HOT
V
DIS
VNTC Pin Current
VNTC Bias Voltage
NTC Input Leakage Current
Cold Temperature Fault Threshold
Voltage
Hot Temperature Fault Threshold
Voltage
NTC Disable Voltage
V
VNTC
= 2.5V
I
VNTC
= 500µA
V
NTC
= 1V
Rising Threshold
Hysteresis
Falling Threshold
Hysteresis
NTC Input Voltage to GND (Falling)
Hysteresis
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electrical characteristics
PARAMETER
Incremental Resistance, V
ON
Regulation
ON Resistance V
BAT
to V
OUT
Internal Ideal Diode
CONDITIONS
I
BAT
= 100mA
I
BAT
= 600mA
l
MIN
TYP
125
215
MAX
UNITS
mΩ
mΩ
Voltage Forward Drop (V
BAT
- V
OUT
) I
BAT
= 5mA
I
BAT
= 100mA
I
BAT
= 600mA
Diode Disable Battery Voltage
Load Current Limit, for V
ON
Regulation
Diode Current Limit
External Diode Forward Voltage
Output Low Voltage (CHRG,
HVPR)
Input High Voltage
Input Low Voltage
Logic Input Pull Down Current
HVEN Pin Bias Current
Charger Shutdown Threshold
Voltage on TIMER
Charger Shutdown Pull-Up Current
on TIMER
V
TIMER
= 0V
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
10
30
55
160
2.8
550
2.2
20
50
mV
mV
mV
V
mA
A
mV
External Ideal Diode
l
0.1
2.3
0.4
0.3
V
V
V
µA
µA
µA
V
µA
2
6
0.01
l
l
20
0.1
0.4
0.14
5
14
1.4
4.4
2.5
4.85
0
0.738
•
V
VNTC
0.018
•
V
VNTC
0.326
•
V
VNTC
0.015
•
V
VNTC
3.5
±1
mA
V
µA
V
V
V
V
75
100
35
125
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 over-temperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperatures will exceed 110°C when over-temperature protection is
active. Continuous operation above the specified maximum operating
junction temperature may result in device degradation or failure.
Note 5:
The LTC4089-1 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 is 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.
40891fb
4
For more information
www.linear.com/LTC4089-1
LTC4089-1
typical perFormance characteristics
V
FLOAT
Load Regulation
4.20
4.15
4.10
V
FLOAT
(V)
V
FLOAT
(V)
4.05
4.00
3.95
3.90
R
PROG
= 34k
4.120
4.115
4.110
4.105
4.100
4.095
4.090
4.085
0
200
400
600
I
BAT
(mA)
800
1000
4089-1 G01
T
A
= 25°C, unless otherwise specified.
Battery Current and Voltage
vs Time
5
4
V
BAT
, V
OUT
, V
CHRG
(V)
1500
1200
Battery Regulation (Float)
Voltage vs Temperature
V
IN
= 5V
I
BAT
= 2mA
3
2
1250mAh
CELL
HVIN = 12V
R
PROG
= 50k
0
50
100
TIME (MIN)
V
BAT
V
OUT
V
CHRG
I
BAT
900
600
I
BAT
(mA)
C/10
TERMINATION
1
300
4.080
–50
–25
50
25
TEMPERATURE (°C)
0
75
100
0
150
0
200
4089-1 G03
4089-1 G02
Charging from USB, I
BAT
vs V
BAT
600
V
IN
= 5V
V
OUT
= NO LOAD
500
R
PROG
= 100k
R
CLPROG
= 2k
600
500
400
I
BAT
(mA)
Charge Current vs Temperature
(Thermal Regulation)
1000
Ideal Diode Current vs Forward
Voltage and Temperature
(No External Device)
V
BAT
= 3.7V
900
V
IN
= 0V
800
700
I
OUT
(mA)
600
500
400
300
200
100
–50°C
0°C
50°C
100°C
0
50
100
V
FWD
(mV)
150
200
4089-1 G06
400
I
BAT
(mA)
300
200
100
0
300
200
100
V
IN
= 5V
V
BAT
= 3.5V
θ
JA
= 50°C/W
0
50
25
75
–50 –25
0
TEMPERATURE (°C)
HPWR = 5V
HPWR = 0V
0
0.5
1
1.5
2 2.5
V
BAT
(V)
3
3.5
4
4.5
100
125
0
4089-1 G04
4089-1 G05
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
4089-1 G07
High Voltage Regulator Efficiency
vs Output Load
100
95
HVIN = 12V
90
85
80
75
70
65
60
55
50
0
0.2
FIGURE 10 SCHEMATIC
V
BAT
= 4.11V (I
BAT
= 0)
0.6
0.4
I
OUT
(A)
0.8
1.0
4089-1 G09
HVIN = 8V
HVIN = 24V
HVIN = 36V
40891fb
For more information
www.linear.com/LTC4089-1
5
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