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LTC4098EUDC-1#PBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P32
LTC4098/LTC4098-1
1
40981fc
USB Compatible Switching
Power Managers/Li-Ion Chargers
with Overvoltage Protection
The LTC
®
4098/LTC4098-1 are high efficiency USB Power-
Path controllers and full-featured Li-Ion/Polymer battery
chargers. They seamlessly manage power distribution from
multiple sources including USB, wall adapter, automotive,
Firewire or other high voltage DC/DC converters, and a
Li-Ion/Polymer battery.
The LTC4098/LTC4098-1’s internal switching regulator
automatically limits its input current for USB compatibility.
For automotive and other high voltage applications, the
LTC4098/LTC4098-1 interface with a Linear Technology
external switching regulator to provide a high efficiency
high voltage power path. Both the USB and the optional
high voltage inputs feature Bat-Track optimized charging
to provide maximum power to the application and ease
thermal issues in high power density applications with
input supplies from 5V to as high as 38V.
An overvoltage circuit protects the LTC4098/LTC4098-1
from high voltage damage on the USB/wall adaptor inputs
with an N-channel FET and a resistor.
The LTC4098/LTC4098-1 are available in a 20-lead, 3mm
× 4mm × 0.75mm QFN surface mount package.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
Bat-Track and PowerPath are trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
n
Media Players
n
GPS
n
PDAs
n
Smart Phones
n
Switching Regulator with Bat-Track™ Adaptive
Output Control Makes Optimal Use of Limited
Power Available from USB Port to Charge Battery
and Power Application
n
Overvoltage Protection Guards Against Damage
n
Bat-Track External Step-Down Switching Regulator
Control Maximizes Efficiency from Automotive,
Firewire and Other High Voltage Input Sources
n
180mΩ Internal Ideal Diode Plus External Ideal Diode
Controller Seamlessly Provide Low Loss PowerPath™
when Input Power is Limited or Unavailable
n
Preset 4.2V Charge Voltage with 0.5% Accuracy
(4.1V for LTC4098-1)
n
4.1V Float Voltage (LTC4098-1) Improves Battery Life
and High Temperature Safety Margin
n
Instant-On Operation with Discharged Battery
n
700mA Maximum Load Current from USB Port
n
1.5A Maximum Charge Current with Thermal Limiting
n
20-Lead 3mm × 4mm × 0.75mm QFN Package
High Efficiency USB/Automotive Battery Charger with Overvoltage Protection
USB Switching Regulator Efficiency
to System Load (P
VOUT
/P
VBUS
)
TYPICAL APPLICATION
FEATURES
APPLICATIONS
DESCRIPTION
V
BUS
10μF
0.1μF 3.01k 1k
10μF
3.3μH
6.04k
V
C
WALL
INPUT
AUTOMOTIVE,
FIREWIRE, ETC.
INPUT
USB
TO μC
SYSTEM
LOAD
40981 TA01a
CLPROG PROG
LTC4098/LTC4098-1
GND
SW
BATSENS
OVGATE
OVSENS
D0-D2
BAT
V
OUT
Li-Ion
+
LT3653
3
I
VOUT
(A)
0.01
0
EFFICIENCY (%)
20
40
60
80
0.1 1
40981 TA01b
100
10
30
50
70
90
BAT = 4.2V
BAT = 3.3V
V
BUS
= 5V
I
BAT
= 0mA
10x MODE
LTC4098/LTC4098-1
2
40981fc
ELECTRICAL CHARACTERISTICS
V
BUS
, WALL (Transient) t < 1ms,
Duty Cycle < 1% .......................................... –0.3V to 7V
V
BUS
, WALL (Static), BAT, BATSENS,
CHRG, NTC, ................................................. –0.3V to 6V
D0, D1, D2.........–0.3V to Max (V
BUS
, V
OUT
, BAT) + 0.3V
I
OVSENS
................................................................±10mA
I
CLPROG
....................................................................3mA
I
PROG
........................................................................2mA
I
CHRG
......................................................................50m A
I
VOUT
, I
SW
, I
BAT
............................................................2A
I
ACPR
......................................................................10mA
Operating Temperature Range (Note 2) ...–40°C to 85°C
Junction Temperature ........................................... 125°C
Storage Temperature Range .................. –65°C to 125°C
(Note 1)
The
l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
BUS
= 5V, BAT = 3.8V, R
CLPROG
= 3.01k, unless otherwise noted.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Input Power Supply
V
BUS
Input Supply Voltage
l
4.35 5.5 V
I
VBUS(LIM)
Total Input Current 1x Mode
5x Mode
10x Mode
Low Power Suspend Mode
High Power Suspend Mode
l
l
l
l
l
92
445
815
0.32
1.6
97
473
883
0.39
2.05
100
500
1000
0.5
2.5
mA
mA
mA
mA
mA
I
VBUSQ
(Note 4) Input Quiescent Current 1x Mode
5x Mode
10x Mode
Low Power Suspend Mode
High Power Suspend Mode
6
15
15
0.042
0.042
mA
mA
mA
mA
mA
h
CLPROG
(Note 4) Ratio of Measured V
BUS
Current to
CLPROG Program Current
1x Mode
5x Mode
10x Mode
Low Power Suspend Mode
High Power Suspend Mode
230
1164
2210
11.6
60
mA/mA
mA/mA
mA/mA
mA/mA
mA/mA
PIN CONFIGURATION
20 19 18 17
7 8
TOP VIEW
21
UDC PACKAGE
20-LEAD (3mm s 4mm) PLASTIC QFN
9 10
6
5
4
3
2
1
11
12
13
14
15
16
OVSENS
OVGATE
CLPROG
NTCBIAS
NTC
BATSENS
D1
D0
SW
V
BUS
V
OUT
BAT
V
C
ACPR
WALL
D2
PROG
CHRG
GND
IDGATE
T
JMAX
= 125°C, θ
JA
= 43°C/W
EXPOSED PAD (PIN 21) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC4098EPDC#PBF LTC4098EPDC#TRPBF DDVT
20-Lead (3mm × 4mm) Plastic UTQFN
–40°C to 85°C (OBSOLETE)
LTC4098EUDC#PBF LTC4098EUDC#TRPBF LDDT
20-Lead (3mm × 4mm) Plastic QFN
–40°C to 85°C
LTC4098EPDC-1#PBF LTC4098EPDC-1#TRPBF DSZT
20-Lead (3mm × 4mm) Plastic UTQFN
–40°C to 85°C (OBSOLETE)
LTC4098EUDC-1#PBF LTC4098EUDC-1#TRPBF LFXX
20-Lead (3mm × 4mm) Plastic QFN
–40°C to 85°C
Consult LTC Marketing for parts specified with wider operating temperature ranges.
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/
ABSOLUTE MAXIMUM RATINGS
LTC4098/LTC4098-1
3
40981fc
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
I
VOUT
V
OUT
Current Available Before
Discharging Battery
1x Mode, BAT = 3.3V
5x Mode, BAT = 3.3V
10x Mode, BAT = 3.3V
Low Power Suspend Mode
High Power Suspend Mode
0.26
1.6
135
659
1231
0.32
2.04
0.41
2.46
mA
mA
mA
mA
mA
V
CLPROG
CLPROG Servo Voltage in Current Limit 1x, 5x, 10x Modes
Suspend Modes
1.188
100
V
mV
V
UVLO
V
BUS
Undervoltage Lockout Rising Threshold
Falling Threshold 3.95
4.30
4.00
4.35 V
V
V
DUVLO
V
BUS
to BAT Differential Undervoltage
Lockout
Rising Threshold
Falling Threshold
200
50
mV
mV
V
OUT
V
OUT
Voltage 1x, 5x, 10x Modes, 0V < BAT ≤ 4.2V,
I
VOUT
= 0mA, Battery Charger Off
3.5 BAT + 0.3 4.7 V
USB Suspend Modes, I
VOUT
= 250μA 4.5 4.6 4.7 V
f
OSC
Switching Frequency 1.96 2.25 2.65 MHz
R
PMOS
PMOS On-Resistance 0.18
Ω
R
NMOS
NMOS On-Resistance 0.30
Ω
I
PEAK
Peak Inductor Current Clamp 1x Mode
5x Mode
10x Mode
1.2
1.7
3
A
A
A
R
SUSP
Suspend LDO Output Resistance 15
Ω
Bat-Track External Switching Regulator Control
V
WALL
Absolute WALL Input Threshold Rising Threshold
Falling Threshold
4.2 4.3
3.2
4.4 V
V
ΔV
WALL
Differential WALL Input Threshold WALL-BAT Rising Threshold
WALL-BAT Falling Threshold 0
90
30 45
mV
mV
Regulation Target 3.5 BAT + 0.3 V
WALL Quiescent Current 100 μA
ACPR High Voltage I
ACPR
= 0mA V
OUT
V
ACPR Low Voltage I
ACPR
= 0mA 0 V
Overvoltage Protection
V
OVP
Overvoltage Protection Threshold Rising Threshold, R
OVSENS
= 6.04k 6.20 6.35 6.50 V
V
OVGATE
OVGATE Output Voltage Input Below V
OVP
Input Above V
OVP
1.88 • V
OVSENSE
0
12 V
V
t
RISE
OVGATE Time to Reach Regulation C
OVGATE
= 1nF 2.2 ms
Battery Charger
V
FLOAT
LTC4098 BAT Regulated Output Voltage
0°C ≤ T
A
≤ 85°C
4.179
4.165
4.200
4.200
4.221
4.235
V
V
LTC4098-1 BAT Regulated Output
Voltage 0°C ≤ T
A
≤ 85°C
4.080
4.066
4.100
4.100
4.121
4.134
V
V
I
CHG
Constant-Current Mode Charge Current R
PROG
= 1k, 10x Mode
R
PROG
= 5k, 5x, 10x Modes
980
192
1030
206
1080
220
mA
mA
I
BAT
Battery Drain Current V
BUS
> V
UVLO
, PowerPath Switching
Regulator On, Battery Charger Off,
I
VOUT
= 0μA
3.7 5 μA
V
BUS
= 0V, I
VOUT
= 0μA (Ideal Diode
Mode)
25 35 μA
ELECTRICAL CHARACTERISTICS
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
BUS
= 5V, BAT = 3.8V, R
CLPROG
= 3.01k, unless otherwise noted.
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LTC4098EUDC-1#PBF

Mfr. #:
Buy LTC4098EUDC-1#PBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Battery Management High efficiency I2C Controlled USB Power Manager/Charger with Overvoltage Protection
Lifecycle:
New from this manufacturer.
Delivery:
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