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LTC4053EDD-4.2#TRPBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
LTC4053-4.2
1
4053fa
■
Cellular Telephones
■
Handheld Computers
■
Charging Docks and Cradles
■
MP3 Players
■
Digital Cameras
■
Charges Single-Cell Li-Ion Batteries Directly from
USB Port
■
Thermal Regulation Maximizes Charge Rate
without Risk of Overheating*
■
Programmable Charge Current with ±7% Accuracy
■
Low Dropout Operation
■
No External MOSFET, Sense Resistor or Blocking
Diode Required
■
Programmable Charge Termination Timer
■
Preset Charge Voltage with ±1% Accuracy
■
C/10 Charge Current Detection Output
■
AC Present Logic Output
■
25µA Supply Current in Shutdown Mode
■
Automatic Recharge
■
Charge Current Monitor Useful for Gas Gauging
■
Thermistor Input for Temperature Qualified Charging
■
Available in 10-pin thermally enhanced MSOP and
low profile (0.75mm) 3mm × 3mm DFN packages
USB Compatible
Lithium-Ion Battery Charger
with Thermal Regulation
The LTC
®
4053 is a standalone linear charger for lithium-
ion batteries that can be powered directly from a USB port.
The IC contains an on-chip power MOSFET and eliminates
the need for an external sense resistor and blocking diode.
Thermal regulation automatically adjusts charge current
to limit die temperature during high power or high ambient
temperature conditions. This feature protects the end
product and the LTC4053 from thermal stress while the IC
charges the battery at maximum rate without interruption.
The charge current and charge time can be set externally
with a single resistor and capacitor, respectively. When
the input supply (wall adapter or USB supply) is removed,
the LTC4053 automatically enters a low current sleep
mode, dropping the battery drain current to less than 5µA.
The LTC4053 also includes NTC temperature sensing,
C/10 detection circuitry, AC present logic, low battery
charge conditioning (trickle charging) and shutdown (25µA
supply current).
The LTC4053 is available in 10-pin thermally enhanced
MSOP and low profile (0.75mm) DFN packages.
, LTC and LT are registered trademarks of Linear Technology Corporation.
USB PORT
4.35V TO 5.5V
4.7µF
4053TA01
4
2
USB CONTROL
µC
Li-Ion
BATTERY
SYSTEM
LOAD
+
0.1µF
15k
100mA/
500mA
SUSPEND
3.74k
SHDN
V
CC
GND NTC
9
8
756
PROG
LTC4053-4.2
BAT
TIMER
USB Powered Standalone Li-Ion Charger
Protected by U.S. Patents including 6522118, 6700364.
Charge Current vs Input Voltage
V
CC
(V)
4.0
I
BAT
(mA)
600
500
400
300
200
100
0
4.5 5.0
4053 G04
5.5
T
A
= 25°C
R
PROG
= 3k
V
BAT
= 3.95V
V
BAT
= 4.15V
V
BAT
= 4.05V
FEATURES
DESCRIPTIO
U
APPLICATIO S
U
TYPICAL APPLICATIO
U
LTC4053-4.2
2
4053fa
Input Supply Voltage (V
CC
) ....................................... 7V
BAT ........................................................................... 7V
NTC, SHDN, TIMER, PROG ............ –0.3V to V
CC
+ 0.3V
CHRG, FAULT, ACPR .................................. –0.3V to 7V
BAT Short-Circuit Duration .......................... Continuous
BAT Current (Note 2) ............................................. 1.3A
PROG Current (Note 2) ....................................... 1.3mA
ABSOLUTE AXI U RATI GS
W
WW
U
PACKAGE/ORDER I FOR ATIO
UUW
(Note 1)
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ORDER PART
NUMBER
LTC4053EDD-4.2
T
JMAX
= 125°C, θ
JA
= 40°C/W (NOTE 4)
EXPOSED PAD (PIN 11) IS GND
(MUST BE SOLDERED TO PCB)
1
2
3
4
5
CHRG
V
CC
FAULT
TIMER
GND
10
9
8
7
6
ACPR
BAT
SHDN
PROG
NTC
TOP VIEW
11
MSE EXPOSED PAD PACKAGE
10-LEAD PLASTIC MSOP
DD PART MARKING
LBQC
Junction Temperature.......................................... 125°C
Operating Temperature Range (Note 3) ...–40°C to 85°C
Storage Temperature Range
MSE .................................................. – 65°C to 150°C
DD .................................................... – 65°C to 125°C
Lead Temperature (Soldering, 10 sec)
MSE .................................................................. 300°C
ORDER PART
NUMBER
LTC4053EMSE-4.2
MSE PART MARKING
LTZT
TOP VIEW
11
DD PACKAGE
10-LEAD (3mm × 3mm) PLASTIC DFN
10
9
6
7
8
4
5
3
2
1
ACPR
BAT
SHDN
PROG
NTC
CHRG
V
CC
FAULT
TIMER
GND
T
JMAX
= 125°C, θ
JA
= 40°C/W (NOTE 4)
EXPOSED PAD (PIN 11) IS GND
(MUST BE SOLDERED TO PCB)
ELECTRICAL CHARACTERISTICS
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
CC
= 5V
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
CC
V
CC
Supply Voltage ● 4.25 6.5 V
I
CC
V
CC
Supply Current Charger On; Current Mode; R
PROG
= 30k (Note 5) ● 12 mA
Shutdown Mode; V
SHDN
= 0V ● 25 50 µA
Sleep Mode V
CC
< V
BAT
or V
CC
≤ 4V ● 25 50 µA
V
BAT
V
BAT
Regulated Float Voltage ● 4.158 4.2 4.242 V
I
BAT
Battery Pin Current R
PROG
= 3k; Current Mode ● 465 500 535 mA
R
PROG
= 15k; Current Mode ● 93 100 107 mA
Shutdown Mode; V
SHDN
= 0V ±1 ±3 µA
Sleep Mode V
CC
< V
BAT
or V
CC
< (V
UV
– ∆V
UV
) ±1 ±3 µA
I
TRIKL
Trickle Charge Current V
BAT
< 2V; R
PROG
= 3k ● 35 50 65 mA
V
TRIKL
Trickle Charge Trip Threshold V
BAT
Rising 2.48 V
∆V
TRIKL
Trickle Charge Trip Hysteresis 100 mV
V
UV
V
CC
Undervoltage Lockout Voltage V
CC
Rising ● 4 4.25 V
∆V
UV
V
CC
Undervoltage Lockout Hysteresis 200 mV
V
MSD
Manual Shutdown Threshold Voltage SHDN Pin Voltage 0.6 1.3 V
V
ASD
Automatic Shutdown Threshold Voltage (V
CC
- V
BAT
) High to Low 35 mV
(V
CC
- V
BAT
) Low to High 70 mV
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/
LTC4053-4.2
3
4053fa
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The Absolute Maximum BAT Current Rating of 1.3A is guaranteed
by design and current density calculations. The Absolute Maximum PROG
Current Rating is guaranteed to be 1/1000 of BAT current rating by design.
Note 3: The LTC4053E is guaranteed to meet performance specifications
from 0°C to 70°C. Specifications over the –40°C to 85°C operating
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
PROG
PROG Pin Voltage R
PROG
= 3k, I
PROG
= 500µA 1.5 V
I
CHRG
CHRG Pin Weak Pulldown Current V
CHRG
= 1V 15 30 50 µA
V
CHRG
CHRG Pin Output Low Voltage I
CHRG
= 5mA 0.35 0.6 V
V
ACPR
ACPR Pin Output Low Voltage I
ACPR
= 5mA 0.35 0.6 V
V
FAULT
FAULT Pin Output Low Voltage I
FAULT
= 5mA 0.35 0.6 V
I
C/10
End of Charge Indication Current Level R
PROG
= 3k 44 50 56 mA
t
TIMER
TIMER Accuracy C
TIMER
= 0.1µF10%
V
RECHRG
Recharge Battery Voltage Threshold Battery Voltage Falling 4.035 V
V
NTC-HOT
NTC Pin Hot Threshold Voltage V
NTC
Falling 2.5 V
V
HOT-HYS
NTC Pin Hot Hysteresis Voltage 80 mV
V
NTC-COLD
NTC Pin Cold Threshold Voltage V
NTC
Rising 4.375 V
V
COLD-HYS
NTC Pin Cold Hystersis Voltage 80 mV
V
NTC-DIS
NTC Pin Disable Threshold Voltage V
NTC
Rising 100 mV
V
DIS-HYS
NTC Pin Disable Hystersis Voltage 10 mV
T
LIM
Junction Temperature in 105 °C
Constant-Temperature Mode
R
ON
Power MOSFET “ON” Resistance 375 mΩ
temperature range are assured by design, characterization and correlation
with statistical process controls.
Note 4: Failure to solder the exposed backside of the package to the PC
board will result in a thermal resistance much higher than 40°C/W.
Note 5: Supply current includes PROG pin current (approximately 50µA)
but does not include any current delivered to the battery through the BAT
pin (approximately 50mA).
ELECTRICAL CHARACTERISTICS
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
CC
= 5V
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16

LTC4053EDD-4.2#TRPBF

Mfr. #:
Buy LTC4053EDD-4.2#TRPBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Battery Management USB Li-Ion Battery Charger in DFN
Lifecycle:
New from this manufacturer.
Delivery:
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