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LTC4058EDD-4.2#TRPBF

P1-P3P4-P6P7-P9P10-P12
1
LTC4058-4.2/LTC4058X-4.2
sn405842 405842fs
Standalone Linear
Li-Ion Battery Charger with
Thermal Regulation in DFN
■
Programmable Charge Current Up to 950mA
■
Complete Linear Charger in DFN Package
■
No MOSFET, Sense Resistor or Blocking Diode
Required
■
Thermal Regulation Maximizes Charge Rate
Without Risk of Overheating*
■
Battery Kelvin Sensing Improves Charging Accuracy
■
Charges Directly from a USB Port
■
C/10 Charge Termination
■
Preset 4.2V Charge Voltage with ±1% Accuracy
■
Charge Current Monitor Output for Gas Gauging*
■
Automatic Recharge
■
Charge Status Output
■
“AC Present” Output
■
2.9V Trickle Charge Threshold (LTC4058)
■
Available Without Trickle Charge (LTC4058X)
■
Soft-Start Limits Inrush Current
■
Low Profile (3mm × 3mm × 0.75mm) DFN Package
■
Cellular Telephones, PDAs, MP3 Players
■
Bluetooth Applications
, LTC and LT are registered trademarks of Linear Technology Corporation.
The LTC
®
4058 is a complete constant-current/constant-
voltage linear charger for single cell lithium-ion batteries.
Its DFN package and low external component count make
the LTC4058 ideally suited for portable applications. Fur-
thermore, the LTC4058 is designed to work within USB
power specifications.
The LTC4058 can Kelvin sense the battery terminal for
more accurate float voltage charging. No external sense
resistor or external blocking diode are required due to the
internal MOSFET architecture. Thermal feedback regu-
lates the charge current to limit the die temperature during
high power operation or high ambient temperature condi-
tions. The charge voltage is fixed at 4.2V and the charge
current is programmed with a resistor. The LTC4058
terminates the charge cycle when the charge current
drops to 10% of the programmed value after the final float
voltage is reached.
When the input supply (wall adapter or USB supply) is
removed, the LTC4058 enters a low current state dropping
the battery drain current to less than 2µA. Other features
include charge current monitor, undervoltage lockout,
automatic recharge and status pins to indicate charge
termination and the presence of an input voltage.
BATV
CC
BSENSE
CHRG
1.65k
405842 TA01
1µF
V
IN
4.5V TO 6.5V
1-CELL
Li-Ion
BATTERY
LTC4058-4.2
600mA
ACPR
EN PROG
GND
+
TIME (HOURS)
0
CHARGE CURRENT (mA)
1.5
405842 TA02
0.5 1.0 2.25
700
600
500
400
300
200
100
0
4.75
4.50
4.25
4.00
3.75
3.50
3.25
3.00
0.25 0.75 1.25 2.01.75
CONSTANT
VOLTAGE
CONSTANT
CURRENT
BATTERY VOLTAGE (V)
V
CC
= 5V
θ
JA
= 40°C/W
R
PROG
= 1.65k
T
A
= 25°C
Complete Charge Cycle (750mAh Battery)
*US Patent 6,522,118
Single Cell Li-Ion Battery Charger with Kelvin Sense
DESCRIPTIO
U
FEATURES
APPLICATIO S
U
TYPICAL APPLICATIO
U
2
LTC4058-4.2/LTC4058X-4.2
sn405842 405842fs
(Note 1)
Input Supply Voltage (V
CC
) ....................... –0.3V to 10V
PROG............................................. –0.3V to V
CC
+ 0.3V
BAT, BSENSE.............................................. –0.3V to 7V
CHRG, ACPR, EN ...................................... –0.3V to 10V
BAT Short-Circuit Duration .......................... Continuous
BAT Pin Current ........................................................ 1A
PROG Pin Current................................................... 1mA
Maximum Junction Temperature .......................... 125°C
Operating Temperature Range (Note 2) .. –40°C to 85°C
Storage Temperature Range ................. –65°C to 125°C
T
JMAX
= 125°C, θ
JA
= 40°C/W (NOTE 3)
EXPOSED PAD IS GROUND (PIN 9)
MUST BE SOLDERED TO PCB
ORDER PART
NUMBER
DD PART MARKING
LAEV
LBDH
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
CC
Input Supply Voltage ● 4.25 6.5 V
I
CC
Input Supply Current Charge Mode (Note 4), R
PROG
= 10k ● 0.3 1 mA
Standby Mode (Charge Terminated)
● 200 500 µA
Shutdown Mode (EN = 5V, V
CC
< V
BSENSE
● 25 50 µA
or V
CC
< V
UV
)
V
FLOAT
Regulated Output (Float) Voltage 0°C ≤ T
A
≤ 85°C, 4.3V < V
CC
< 6.5V 4.158 4.2 4.242 V
I
BAT
BAT Pin Current R
PROG
= 10k, Current Mode ● 93 100 107 mA
R
PROG
= 2k, Current Mode ● 465 500 535 mA
I
BSENSE
BSENSE Pin Current (Note 5) Standby Mode, V
BSENSE
= 4.2V ● –2.5 –6 µA
Shutdown Mode (EN = 5V, V
CC
< V
BSENSE
or ±1 ±2 µA
V
CC
< V
UV
)
Sleep Mode, V
CC
= 0V ±1 ±2 µA
I
TRIKL
Trickle Charge Current V
BSENSE
< V
TRIKL
, R
PROG
= 2k (Note 6) ● 30 45 60 mA
V
TRIKL
Trickle Charge Threshold Voltage R
PROG
= 10k, V
BSENSE
Rising (Note 6) 2.8 2.9 3 V
V
TRHYS
Trickle Charge Hysteresis Voltage R
PROG
= 10k (Note 6) 60 80 110 mV
V
UV
V
CC
Undervoltage Lockout Voltage From V
CC
Low to High ● 3.7 3.8 3.92 V
V
UVHYS
V
CC
Undervoltage Lockout Hysteresis ● 150 200 300 mV
V
EN(IL)
EN Pin Input Low Voltage ● 0.4 0.7 V
V
EN(IH)
EN Pin Input High Voltage ● 0.7 1 V
R
EN
EN Pin Pull-Down Resistor ● 1.2 2 5 MΩ
V
ASD
V
CC
– V
BSENSE
Lockout Threshold V
CC
from Low to High 70 100 140 mV
V
CC
from High to Low 5 30 50 mV
I
TERM
C/10 Termination Current Threshold R
PROG
= 10k (I
CHG
= 100mA) (Note 7) ● 0.085 0.10 0.115 mA/mA
R
PROG
= 2k (I
CHG
= 500mA) ● 0.085 0.10 0.115 mA/mA
V
PROG
PROG Pin Voltage R
PROG
= 10k, Current Mode 0.93 1 1.07 V
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
RECHRG
Recharge Battery Threshold Voltage V
FLOAT
– V
RECHRG
, 0°C ≤ T
A
≤ 85°C 60 100 140 mV
The ● denotes specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
CC
= 5V, unless otherwise noted.
ABSOLUTE AXI U RATI GS
WWWU
PACKAGE/ORDER I FOR ATIO
UU
W
ELECTRICAL CHARACTERISTICS
Consult LTC Marketing for parts specified with wider operating temperature ranges.
LTC4058EDD-4.2
LTC4058XEDD-4.2
TOP VIEW
9
DD PACKAGE
8-LEAD (3mm × 3mm) PLASTIC DFN
5
6
7
8
4
3
2
1BSENSE
BAT
CHRG
GND
EN
ACPR
V
CC
PROG
3
LTC4058-4.2/LTC4058X-4.2
sn405842 405842fs
Note 1: Absolute Maximum Ratings are those values beyond which the life
of the device may be impaired.
Note 2: The LTC4058E-4.2/LTC4058XE-4.2 are guaranteed to meet
performance specifications from 0°C to 70°C. Specifications 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 solder the exposed backside of the package to the PC
board will result in a thermal resistance much higher than 40°C/W.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
T
LIM
Junction Temperature in Constant 120 °C
Temperature Mode
R
ON
Power FET “ON” Resistance 600 mΩ
(Between V
CC
and BAT)
t
SS
Soft-Start Time I
BAT
= 0 to I
BAT
=1000V/R
PROG
100 µs
t
RECHARGE
Recharge Comparator Filter Time V
BSENSE
High to Low 0.75 2 4.5 ms
t
TERM
Termination Comparator Filter Time I
BAT
Drops Below I
CHG
/10 400 1000 2500 µs
The ● denotes specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
CC
= 5V, unless otherwise noted.
ELECTRICAL CHARACTERISTICS
Note 4: Supply current includes PROG pin current (approximately 100µA)
but does not include any current delivered to the battery through the BAT
pin (approximately 100mA).
Note 5: For all Li-Ion applications, the BSENSE pin must be electrically
connected to the BAT pin.
Note 6: This parameter is not applicable to the LTC4058X.
Note 7: I
TERM
is expressed as a fraction of measured full charge current
with indicated PROG resistor.
TYPICAL PERFOR A CE CHARACTERISTICS
UW
PROG Pin Voltage vs Supply
Voltage (Constant Current Mode)
V
CC
(V)
4
0.985
V
PROG
(V)
0.990
0.995
1.000
1.005
1.015
4.5
5 5.5 6
405842 G01
6.5 7
1.010
V
CC
= 5V
V
BAT
= V
BSENSE
= 4V
T
A
= 25°C
R
PROG
= 10k
TEMPERATURE (°C)
–50
V
PROG
(V)
0.9975
1.0000
1.0025
25
75
405842 G02
0.9950
0.9925
0.9900
–25 0 50
1.0050
1.0075
1.0100
100
V
CC
= 5V
V
BAT
= V
BSENSE
= 4V
R
PROG
= 10k
V
PROG
(V)
0
0
I
BAT
(mA)
100
200
300
400
600
0.2
0.4 0.6 0.8
405842 G03
1 1.2
500
V
CC
= 5V
T
A
= 25°C
R
PROG
= 2k
PROG Pin Voltage
vs Temperature
Charge Current
vs PROG Pin Voltage
P1-P3P4-P6P7-P9P10-P12

LTC4058EDD-4.2#TRPBF

Mfr. #:
Buy LTC4058EDD-4.2#TRPBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Battery Management Standalone Li-Ion Batter Charger in DFN
Lifecycle:
New from this manufacturer.
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