OMO ElectronicOMO Electronic
Expand menu
Hello, Sign inMy Account
0 Cart

LTC4097EDDB#TRMPBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20
LTC4097
1
4097f
LTC4097
DCIN
USBIN
IUSB
IDC
BAT
VNTC
HPWR
NTC
ITERM
1.24k
1%
2k
1%
2k
1%
WALL
ADAPTER
USB
PORT
1µF
1µF
+
4.2V
SINGLE CELL
Li-Ion BATTERY
800mA (WALL)
100mA/500mA (USB)
4097 TA01
GND
T
TIME (HR)
0
CHARGE
CURRENT (mA)
BATTERY
VOLTAGE (V)
DCIN
VOLTAGE (V)
4.2
200
0
400
800
600
1000
1.5 2.5
4097 TA01b
3.6
3.4
5.0
4.0
3.8
2.5
0
0.5 1.0 2.0 3.0
CONSTANT VOLTAGE
USBIN = 5V
T
A
= 25°C
R
IDC
= 1.24k
R
IUSB
= 2k
HPWR = 5V
TYPICAL APPLICATION
FEATURES
APPLICATIONS
DESCRIPTION
USB/Wall Adapter
Standalone Li-Ion/Polymer
Battery Charger
The LTC
®
4097 is a standalone linear battery charger that
is capable of charging a single-cell Li-Ion or Li-Polymer
battery from both wall adapter and USB inputs. The charger
can detect power at the inputs and automatically select
the appropriate power source for charging.
No external sense resistor or blocking diode is required
for charging due to the internal MOSFET architecture.
Internal thermal feedback regulates the battery charge
current to maintain a constant die temperature during high
power operation or high ambient temperature conditions.
The fl oat voltage is fi xed at 4.2V and the charge current
is programmed with an external resistor. The LTC4097
terminates the charge cycle when the charge current drops
below the user programmed termination threshold after
the fi nal fl oat voltage is reached. The LTC4097 can be put
into shutdown mode reducing the DCIN supply current to
20µA, the USBIN supply current to 10µA, and the battery
drain current to less than 2µA even with power applied
to both inputs.
Other features include trickle charge, automatic recharge,
undervoltage lockout, charge status output, an NTC therm-
istor input used to monitor battery temperature and VNTC
power present output with 120mA drive capability.
Dual Input Battery Charger for Single-Cell Li-Ion Battery
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
*Protected by U.S. Patents including 6522118.
■
Charges Single-Cell Li-Ion/Polymer Battery from
Wall Adapter and USB Inputs
■
Automatic Input Detection (Wall Adapter Input has
Charging Priority)
■
Charge Current Programmable up to 1.2A from
Wall Adapter Input
■
Programmable Charge Current Termination
■
NTC Thermistor Input for Temperature Qualifi ed
Charging
■
Independent DC, USB Charge Current Programming
■
Preset Float Voltage with ±0.6% Accuracy
■
Thermal Regulation Maximizes Charge Rate Without
Risk of Overheating*
■
Charge Status Output
■
Automatic Recharge
■
20µA Charger Quiescent Current in Shutdown
■
Available in a Thermally Enhanced, Low Profi le
(0.75mm) 12-Lead (3mm × 2mm) DFN Package
■
Cellular Telephones
■
MP3 Players
■
Portable Handheld Devices
Complete Charge Cycle (1100mAh Battery)
LTC4097
2
4097f
ELECTRICAL CHARACTERISTICS
PACKAGE/ORDER INFORMATIONABSOLUTE MAXIMUM RATINGS
V
DCIN
, V
USBIN
t < 1ms and Duty Cycle < 1% .................. –0.3V to 7V
Steady State ............................................. –0.3V to 6V
BAT,
⎯
C
⎯
H
⎯
R
⎯
G, NTC, HPWR, SUSP ................... –0.3V to 6V
IDC, IUSB, ITERM ............................–0.3V to V
CC
+ 0.3V
BAT Short-Circuit Duration ............................Continuous
VNTC Short-Circuit Duration .........................Continuous
DCIN, BAT Pin Current (Note 6) .............................1.25A
USBIN Pin Current (Note 6) .....................................1.1A
IDC, IUSB, ITERM Pin Current ............................1.25mA
Junction Temperature ........................................... 125°C
Operating Temperature Range (Note 2) ... –40°C to 85°C
Storage Temperature Range ................... –65°C to 125°C
(Note 1,7)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
DCIN
Adapter Supply Voltage
●
4.25 5.5 V
V
USBIN
USB Supply Voltage
●
4.25 5.5 V
I
DCIN
DCIN Supply Current Charge Mode (Note 4), R
IDC
= 10k
Standby Mode; Charge Terminated
Shutdown Mode (SUSP = 5V)
●
●
250
50
20
800
100
40
µA
µA
µA
I
USBIN
USBIN Supply Current Charge Mode (Note 5), R
IUSB
= 10k, V
DCIN
= 0V
Standby Mode; Charge Terminated, V
DCIN
= 0V
Shutdown (V
DCIN
= 0V, SUSP = 5V)
V
DCIN
> V
USBIN
●
●
250
50
20
10
800
100
40
20
µA
µA
µA
µA
V
FLOAT
Regulated Output (Float) Voltage I
BAT
= 1mA
I
BAT
= 1mA, 0°C < T
A
< 85°C
4.179
4.158
4.2
4.2
4.221
4.242
V
V
I
BAT
BAT Pin Current R
IDC
= 1.25k, Constant-Current Mode
R
IUSB
= 2.1k, Constant-Current Mode
R
IUSB
= 2.1k, Constant-Current Mode, HPWR = 0V
R
IDC
= 10k or R
IUSB
= 10k
Standby Mode, Charge Terminated
Shutdown Mode (Charger Disabled)
Sleep Mode (V
DCIN
= 0V, V
USBIN
= 0V)
750
450
90
88
800
476
95
100
–5
–2
–5
850
500
100
112
–8
–4
–8
mA
mA
mA
mA
µA
µA
µA
V
IDC
IDC Pin Regulated Voltage Constant-Current Mode, R
IDC
= 1.25k 1 V
V
IUSB
IUSB Pin Regulated Voltage Constant-Current Mode, R
IUSB
= 2k
Constant-Current Mode, R
IUSB
= 2k, HPWR = 0
1
0.2
V
V
I
TERMINATE
Charge Current Termination
Threshold
R
ITERM
= 1k
R
ITERM
= 2k
R
ITERM
= 10k
88
42
6
100
50
9.5
112
58
13
mA
mA
mA
I
TRIKL
Trickle Charge Current V
BAT
< V
TRIKL
; R
IDC
= 1k
V
BAT
< V
TRIKL
; R
IUSB
= 2k
85
42
100
50
115
58
mA
mA
TOP VIEW
13
DDB PACKAGE
12-LEAD (3mm × 2mm) PLASTIC DFN
DCIN
USBIN
VNTC
CHRG
SUSP
NTC
BAT
GND
IDC
IUSB
ITERM
HPWR
8
7
10
9
11
12
5
6
4
2
3
1
T
JMAX
= 125°C, θ
JA
= 60°C/W (Note 3)
EXPOSED PAD (PIN 13) IS GND, MUST BE SOLDERED TO PCB
ORDER PART NUMBER DDB PART MARKING
LTC4097EDDB LCRM
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking: http://www.linear.com/leadfree/
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges.
The
● denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C. V
DCIN
= 5V, V
USBIN
= 5V, HPWR = 5V, NTC = 0V, R
IDC
= 1kΩ, R
IUSB
= 2kΩ,
R
ITERM
= 2kΩ unless otherwise noted.
LTC4097
3
4097f
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 LTC4097 is guaranteed to meet the performance specifi cations
from 0°C to 85°C. Specifi cations 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 60°C/W. See
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
TRIKL
Trickle Charge Threshold Voltage V
BAT
Rising
Hysteresis
●
2.8 2.9
135
3V
mV
V
UVDC
DCIN Undervoltage Lockout
Voltage
From Low to High
Hysteresis
4 4.22
200
4.4 V
mV
V
UVUSB
USBIN Undervoltage Lockout
Voltage
From Low to High
Hysteresis
3.8 4
200
4.2 V
mV
V
ASD-DC
V
DCIN
– V
BAT
Lockout Threshold
Voltage
V
DCIN
from High to Low, V
BAT
= 4.3V
V
DCIN
from Low to High, V
BAT
= 4.3V
530
100
55 mV
mV
V
ASD-USB
V
USBIN
– V
BAT
Lockout Threshold
Voltage
V
USBIN
from High to Low, V
BAT
= 4.3V
V
USBIN
from Low to High, V
BAT
= 4.3V
530
150
55 mV
mV
V
SUSP
, V
HPWR
V
IL
, Logic Low Voltage 0.5 V
V
IH
, Logic High Voltage 1.2 V
R
SUSP
SUSP Pulldown Resistance
●
3.4 MΩ
R
HPWR
HPWR Pulldown Resistance
●
3.4 MΩ
V
⎯
C
⎯
H
⎯
R
⎯
G
⎯
C
⎯
H
⎯
R
⎯
G Output Low Voltage I
⎯
C
⎯
H
⎯
R
⎯
G
= 5mA
●
62 150 mV
ΔV
RECHRG
Recharge Battery Threshold
Voltage
V
FLOAT
– V
RECHRG
70 100 130 mV
t
RECHRG
Recharge Comparator Filter Time V
BAT
from High to Low 1.6 ms
t
ITERM
Termination Comparator Filter Time I
BAT
Drops Below Termination Threshold 3 ms
R
ON-DC
Power FET “ON” Resistance
(Between DCIN and BAT)
420 mΩ
R
ON-USB
Power FET “ON” Resistance
(Between USBIN and BAT)
470 mΩ
T
LIM
Junction Temperature in
Constant-Temperature Mode
115 °C
I
VNTC
VNTC Pin Current V
VNTC
= 4.55V DCIN Powered
V
VNTC
= 4.8V USBIN Powered
30
30
mA
mA
V
VNTC
VNTC Bias Voltage I
VNTC
= 250µA 4.25 5.5 V
I
NTC
NTC Input Leakage Current V
NTC
= 1V 0 ±1 µA
V
NTC-COLD
Cold Temperature Fault
Threshold Voltage
Rising Threshold
Hysteresis
0.765 • V
VNTC
0.016 • V
VNTC
V
V
V
NTC-HOT
Hot Temperature Fault Threshold
Voltage
Falling Threshold
Hysteresis
0.349 • V
VNTC
0.016 • V
VNTC
V
V
V
NTC-DIS
NTC Disable Threshold Voltage NTC Input Voltage to GND (Falling)
Hysteresis
0.017 • V
VNTC
0.01 • V
VNTC
V
V
ELECTRICAL CHARACTERISTICS
The ● denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C. V
DCIN
= 5V, V
USBIN
= 5V, HPWR = 5V, NTC = 0V, R
IDC
= 1kΩ, R
IUSB
= 2kΩ,
R
ITERM
= 2kΩ unless otherwise noted.
Thermal Considerations.
Note 4: Supply current includes IDC and ITERM pin current (approximately
100µA each) but does not include any current delivered to the battery
through the BAT pin.
Note 5: Supply current includes IUSB and ITERM pin current
(approximately 100µA each) but does not include any current delivered to
the battery through the BAT pin.
Note 6: Guaranteed by long term current density limitations.
Note 7: V
CC
is greater of DCIN or USBIN
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20

LTC4097EDDB#TRMPBF

Mfr. #:
Buy LTC4097EDDB#TRMPBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Battery Management Dual Input Standalone Li-Ion Battery Charger w/ NTC
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet