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LTC4052-4.2 Datasheet(PDF) 2 Page - Linear Technology

Part # LTC4052-4.2
Description  Lithium-Ion Battery Pulse Charger with Overcurrent Protection
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC4052-4.2 Datasheet(HTML) 2 Page - Linear Technology

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LTC4052-4.2
2
405242f
Input Supply Voltage (VIN)....................................... 12V
BAT Voltage ...............................................– 0.3V to 12V
GATE (Note 2) .............................................– 0.3V to 8V
SENSE, TIMER .................................. – 0.3V to VIN +0.3V
CHRG, ACPR .............................................– 0.3V to 12V
SENSE, BAT Peak Current ...................................... 1.5A
Operating Temperature Range (Note 3) .. – 40
°C to 85°C
Junction Temperature (Note 4) ............................. 125
°C
Storage Temperature Range ................. – 65
°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300
°C
MS8 PART MARKING
TJMAX = 125°C, θJA = 35°C/W
EXPOSED PAD IS GROUND.
(MUST BE SOLDERED TO PCB).
ABSOLUTE
AXI U
RATI GS
PACKAGE/ORDER I FOR ATIO
(Note 1)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VIN
Input Supply Voltage
Wall Adapter Open Circuit Voltage
q
4.5
10
V
IIN
Input Quiescent Supply Current
Full Charge Mode
q
0.7
1.4
mA
VBAT
Battery Float Voltage
0
°C ≤ TA ≤ 85°C
4.158
4.200
4.242
V
q
4.137
4.200
4.242
V
VRECHRG
Recharge Battery Voltage Threshold
Battery Voltage Falling 0
°C ≤ TA ≤ 85°C
3.990
4.050
4.110
V
q
3.969
4.050
4.110
V
VMARGIN
VBAT – VRECHRG Margin
q
75
150
225
mV
VIMAX
Overcurrent Trip Sense Voltage
q
90
105
120
mV
ITRICKLE
Trickle Charge Current
VBAT = 2V
q
14
24
34
mA
VTRICKLE
Trickle Charge Threshold Voltage
VBAT Rising
q
2.35
2.45
2.55
V
RDS(ON)
Internal Switch On-Resistance
VBAT = 2.6V
0.45
0.7
VBAT = 4V
0.35
0.5
VGATE
GATE Pin Voltage
VBAT = 2.6V
6.5
V
VBAT = 4V
10.5
V
TTIMER
TIMER Period Accuracy
CTIMER = 0.1µF, Full Charge Mode
±10
%
ILEAK
Battery Leakage Current Through Charger VBAT = 4V, VIN = 0V
q
1
µA
VSLEEP
Sleep Threshold Voltage
(VIN – VBAT) Low to High
20
45
70
mV
(VIN – VBAT) High to Low
0
15
mV
VACPR
ACPR Pin Output Low Voltage
IACPR = 3mA
q
0.5
0.8
V
ILEAKACPR
ACPR Pin Leakage Current
VIN = 0, VACPR = 6V
q
1
µA
VCHRG
CHRG Pin Output Low Voltage
ICHRG = 3mA, Charging, C/10 Not Reached
q
0.5
0.8
V
ILEAKCHRG
CHRG Pin Leakage Current
VIN = 0, VCHRG = 6V
q
1
µA
ICHRG
CHRG Pin Weak Pull-Down Current
VCHRG = 1V, Charging, C/10 Reached
20
40
70
µA
ORDER PART
NUMBER
LTC4052EMS8E-4.2
1
2
3
4
8
7
6
5
TOP VIEW
MSE EXPOSED PAD PACKAGE
8-LEAD PLASTIC MSOP
BAT
GATE
CHRG
TIMER
SENSE
ACPR
VIN
GND
Consult LTC Marketing for parts specified with wider operating temperature ranges.
LTYY
DC ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VIN = 6V unless otherwise noted.


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