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LTC4066EUF#PBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P28
LTC4066/LTC4066-1
1
4066fc
TYPICAL APPLICATION
FEATURES
APPLICATIONS
DESCRIPTION
USB Power Controller and
Li-Ion Linear Charger with
Low Loss Ideal Diode
The LTC
®
4066/LTC4066-1 are USB power managers and
Li-Ion battery chargers designed to work in portable
battery-powered applications. The parts control the total
current used by the USB peripheral for operation and
battery charging. The total input current can be limited
to 100mA, 500mA or “unlimited” (i.e., above 2A). 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 LTC4066/LTC4066-1 include a standalone constant-
current/constant-voltage linear charger for single cell
Li-ion batteries. The fl oat voltage applied to the battery
is held to a tight 0.8% tolerance, and charge current
is programmable using an external resistor to ground.
A programmable end-of-charge status output (CHRG)
indicates full charge. BAT pin charge and discharge cur-
rents can be monitored via an analog output (I
STAT
). Total
charge time is programmable by an external capacitor to
ground. When the battery drops 100mV below the fl oat
voltage, automatic recharging of the battery occurs. Also
featured is an NTC thermistor input used to monitor bat-
tery temperature while charging.
The LTC4066/LTC4066-1 are available in a 24-pin thin
profi le (0.75mm) 4mm × 4mm QFN package. The LTC4066
is also available in a 24-pin ultrathin profi le (0.55mm)
4mm × 4mm UTQFN package.
n
Portable USB Devices
n
GPS, Cameras, Broadband Wireless Modems
n
Mulitple Input Chargers
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. PowerPath
is a trademark of Linear Technology Corporation. All other trademarks are the property of their
respective owners. *Protected by U.S. Patents including 6522118.
n
Seamless Transition Between Input Power Sources:
Li-Ion Battery, USB and 5V Wall Adapter
n
Low Loss (50mΩ) Ideal Diode Path from BAT to OUT
n
Programmable Charge Current Detection (CHRG)
n
Load Dependent Charging Guarantees USB Input
Current Compliance
n
Analog Gas Gauge Function
n
Charges Single Cell Li-Ion Batteries Directly from
USB Port
n
Constant-Current/Constant-Voltage Operation with
Thermal Feedback to Maximize Charging Rate
Without Risk of Overheating*
n
Selectable 100% or 20% Current Limit
(e.g., 500mA/100mA)
n
Termination Timer Adapts to Actual Charge Current
n
Preset 4.2V Charge Voltage with 0.8% Accuracy
(4.1V for LTC4066-1)
n
NTC Thermistor Input for Temperature Qualifi ed
Charging
n
Thin Profi le (0.75mm) 24-Lead 4mm × 4mm
QFN Package
n
Ultrathin Profi le (0.55mm) 24-Lead 4mm × 4mm
UTQFN Package (LTC4066 Only)
+
IN
V
NTC
NTC
WALL
SHDN
SUSP
HPWR
CLDIS
OUT
4.7μF
510Ω
TO ADC FOR
GAS GAUGE
510Ω
4.7μF
TIMER PROG
LTC4066
CLPROG GND
4066 TA01
TO LDOs,
REGs, ETC
BAT
CHRG
ACPR
POL
I
STAT
0.1μF 100k 2k
SUSPEND USB POWER
500mA/100mA SELECT
5V (NOM)
FROM USB
CABLE V
BUS
2k
INPUT CURRENT
LIMIT DISABLE
I
LOAD
(mA)
0
CURRENT (mA)
300
400
600
500
I
IN
400
4066 TA02
200
100
–100
0
100
200
300
600500
I
BAT
CHARGING
I
LOAD
I
BAT
(IDEAL DIODE)
LTC4066/LTC4066-1
2
4066fc
ABSOLUTE MAXIMUM RATINGS
(Notes 1 to 6)
24 23 22 21 20 19
7 8 9
TOP VIEW
25
UF PACKAGE
24-LEAD (4mm s 4mm) PLASTIC QFN
10 11 12
6
5
4
3
2
1
13
14
15
16
17
18
OUT
BAT
OUT
BAT
BAT
NC
CHRG
ACPR
GND
V
NTC
NTC
HPWR
I
STAT
PROG
CLPROG
TIMER
WALL
POL
NC
OUT
IN
CLDIS
SUSP
SHDN
T
JMAX
= 125°C, θ
JA
= 37°C/W
EXPOSED PAD (PIN #) IS GND, MUST BE SOLDERED TO PCB
24 23 22 21 20 19
7 8 9
TOP VIEW
25
PF PACKAGE
24-LEAD (4mm s 4mm) PLASTIC UTQFN
10 11 12
6
5
4
3
2
1
13
14
15
16
17
18
OUT
BAT
OUT
BAT
BAT
NC
CHRG
ACPR
GND
V
NTC
NTC
HPWR
I
STAT
PROG
CLPROG
TIMER
WALL
POL
NC
OUT
IN
CLDIS
SUSP
SHDN
T
JMAX
= 125°C, θ
JA
= 37°C/W
EXPOSED PAD (PIN #) IS GND, MUST BE SOLDERED TO PCB
PIN CONFIGURATION
ORDER INFORMATION
LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC4066EUF#PBF LTC4066EUF#TRPBF 4066
24-Lead (4mm × 4mm) Plastic QFN
–40°C to 85°C
LTC4066EUF-1#PBF LTC4066EUF-1#TRPBF 40661
24-Lead (4mm × 4mm) Plastic QFN
–40°C to 85°C
LTC4066EPF#PBF LTC4066EPF#TRPBF 4066T
24-Lead (4mm × 4mm) Plastic UTQFN
–40°C to 85°C
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges.
Consult LTC Marketing for information on non-standard lead based fi nish parts.
For more information on lead free part marking, go to:
http://www.linear.com/leadfree/
For more information on tape and reel specifi cations, go to:
http://www.linear.com/tapeandreel/
Terminal Voltage
t < 1ms and Duty Cycle < 1%
IN, OUT ................................................... –0.3V to 7V
Steady State
IN, OUT, BAT ........................................... –0.3V to 6V
NTC, V
NTC
, TIMER, PROG,
CLPROG, I
STAT
....................... –0.3V to (V
CC
+ 0.3V)
CHRG, HPWR, SUSP, SHDN,
WALL, ACPR, POL, CLDIS ...................... –0.3V to 6V
Pin Current (DC)
IN (Note 7) .......................................................... 2.7A
OUT, BAT (Note 7) .................................................. 5A
Operating Temperature Range................. –40°C to 85°C
Maximum Operating Junction Temperature ......... 125°C
Storage Temperature Range .................. –65°C to 125°C
LTC4066/LTC4066-1
3
4066fc
ELECTRICAL CHARACTERISTICS
The l denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C. V
IN
= 5V, V
BAT
= 3.7V, HPWR = 5V, WALL = 0V, R
PROG
= 100k,
R
CLPROG
= R
ISTAT
= 2k, unless otherwise noted.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN
Input Supply Voltage IN and OUT
l
4.35 5.5 V
V
BAT
Input Voltage BAT
l
4.3 V
I
IN
Input Supply Current I
BAT
= I
ISTAT
= 0 (Note 8)
Suspend Mode; SUSP = 2V
Suspend Mode; SUSP = 2V, Wall = 2V, V
OUT
= 4.8V
Shutdown; SHDN = 2V
l
l
l
l
0.5
50
50
10
1.2
100
100
20
mA
μA
μA
μA
I
OUT
Output Supply Current V
OUT
= 5V, V
IN
= 0V, V
BAT
= 4.3V, TIMER = 0V
l
400 800 μA
BAT Battery Drain Current V
BAT
= 4.3V, Charging Stopped
Suspend Mode; SUSP = 2V
Shutdown; SHDN = 2V
V
IN
= 0V, BAT Powers OUT, No Load
l
l
l
l
15
15
2.5
55
27
27
5
100
μA
μA
μA
μA
I
IN(MAX)
Maximum Input Current Limit (Note 9) 1.9 2.6 A
V
UVLO
Input or Output Undervoltage Lockout V
IN
Powers Part, Rising Threshold
V
OUT
Powers Part, Rising Threshold
l
l
3.6
3.6
3.8
3.8
4
4
V
V
ΔV
UVLO
Input or Output Undervoltage Lockout V
IN
Rising – V
IN
Falling or
V
OUT
Rising – V
OUT
Falling
125 mV
Current Limit
I
LIM
Current Limit R
CLPROG
= 2k, HPWR = 5V
R
CLPROG
= 2k, HPWR = 0V
l
l
475
90
500
100
525
110
mA
mA
R
ON
ON Resistance V
IN
to V
OUT
HPWR = 5V, 400mA Load
HPWR = 0V, 80mA Load
0.16
0.16
Ω
Ω
V
CLPROG
CLPROG Pin Voltage R
CLPROG
= 2k
R
CLPROG
= 1k
l
0.980
0.980
1.000
1.000
1.020
1.020
V
V
I
SS
Soft-Start Inrush Current IN or OUT 10 mA/μs
V
ALEN
Automatic Current Limit Enable Threshold
Voltage
(V
IN
– V
OUT
) V
IN
Rising
(V
IN
– V
OUT
) V
IN
Falling
25
–85
50
–60
75
–25
mV
mV
Battery Charger
V
FLOAT
Regulated Output Voltage (0°C to 85°C), I
BAT
= 2mA
I
BAT
= 2mA
l
4.165
4.158
4.200
4.200
4.235
4.242
V
V
(0°C to 85°C), I
BAT
= 2mA (LTC4066-1)
I
BAT
= 2mA (LTC4066-1)
l
4.066
4.059
4.100
4.100
4.134
4.141
V
V
I
BAT
Current Mode Charge Current R
PROG
= 100k, No Load
R
PROG
= 50k, No Load
l
l
460
920
500
1000
540
1080
mA
mA
I
BAT(MAX)
Maximum Charge Current (Note 9) 1.5 A
V
PROG
PROG Pin Voltage R
PROG
= 100k
R
PROG
= 50k
l
l
0.980
0.980
1.000
1.000
1.020
1.020
V
V
k
ISTAT
Ratio of I
BAT
(Charging) to I
STAT
Pin Current
I
BAT
= 50mA
I
BAT
= 100mA
I
BAT
= 500mA
I
BAT
= 1000mA
l
l
l
l
875
900
925
950
1000
1000
1000
1000
1125
1100
1075
1050
mA/mA
mA/mA
mA/mA
mA/mA
V
EOC
End-of-Charge I
STAT
Pin Voltage V
BAT
= V
FLOAT
(4.2V, 4.1V for LTC4066-1)
l
94 100 106 mV
I
TRIKL
Trickle Charge Current V
BAT
= 2V, R
PROG
= 100k 35 50 60 mA
V
TRIKL
Trickle Charge Threshold Voltage
l
2.8 2.9 3 V
V
CEN
Charger Enable Threshold Voltage (V
OUT
– V
BAT
) High to Low, V
BAT
= 4V
(V
OUT
– V
BAT
) Low to High, V
BAT
= 4V
60
90
mV
mV
V
RECHRG
Recharge Battery Threshold Voltage V
FLOAT
– V
RECHRG
l
60 100 130 mV
t
TIMER
TIMER Accuracy V
BAT
= 4.2V (4.1V for LTC4066-1) –10 10 %
Recharge Time Percent of Total Charge Time 50 %
Low-Battery Trickle Charge Time Percent of Total Charge Time, V
BAT
< 2.8V 25 %
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LTC4066EUF#PBF

Mfr. #:
Buy LTC4066EUF#PBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Battery Management USB Power Manager and Li-Ion Charger
Lifecycle:
New from this manufacturer.
Delivery:
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