LTC4052-4.2_15 Datasheet, PDF (2/12 Pages) Linear Technology – Lithium-Ion Battery Pulse Charger with Overcurrent Protection

LTC4052-4.2
ABSOLUTE AXI U RATI GS
(Note 1)
Input Supply Voltage (V_IN)....................................... 12V
BAT Voltage ...............................................– 0.3V to 12V
GATE (Note 2) .............................................– 0.3V to 8V
SENSE, TIMER .................................. – 0.3V to V_IN +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
UW U
PACKAGE/ORDER I FOR ATIO
TOP VIEW
SENSE 1
ACPR 2
V_IN 3
GND 4
8 BAT
7 GATE
6 CHRG
5 TIMER
MSE EXPOSED PAD PACKAGE
8-LEAD PLASTIC MSOP
T_JMAX = 125°C, θ_JA = 35°C/W
EXPOSED PAD IS GROUND.
(MUST BE SOLDERED TO PCB).
ORDER PART
NUMBER
LTC4052EMS8E-4.2
MS8 PART MARKING
LTYY
Consult LTC Marketing for parts specified with wider operating temperature ranges.
DC ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T_A = 25°C. V_IN = 6V unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX UNITS
V_IN
Input Supply Voltage
I_IN
Input Quiescent Supply Current
V_BAT
Battery Float Voltage
Wall Adapter Open Circuit Voltage
Full Charge Mode
0°C ≤ T_A ≤ 85°C
q 4.5
10
V
q
0.7
1.4
mA
4.158 4.200 4.242
V
q 4.137 4.200 4.242
V
V_RECHRG Recharge Battery Voltage Threshold
Battery Voltage Falling 0°C ≤ T_A ≤ 85°C
3.990 4.050 4.110
V
q 3.969 4.050 4.110
V
V_MARGIN
V_IMAX
I_TRICKLE
V_TRICKLE
R_DS(ON)
V_GATE
T_TIMER
I_LEAK
V_SLEEP
V_ACPR
I _LEAKACPR
V_CHRG
I _LEAKCHRG
I_CHRG
V_BAT – V_RECHRG Margin
Overcurrent Trip Sense Voltage
Trickle Charge Current
V_BAT = 2V
Trickle Charge Threshold Voltage
V_BAT Rising
Internal Switch On-Resistance
V_BAT = 2.6V
V_BAT = 4V
GATE Pin Voltage
V_BAT = 2.6V
V_BAT = 4V
TIMER Period Accuracy
C_TIMER = 0.1µF, Full Charge Mode
Battery Leakage Current Through Charger V_BAT = 4V, V_IN = 0V
Sleep Threshold Voltage
(V_IN – V_BAT) Low to High
(V_IN – V_BAT) High to Low
ACPR Pin Output Low Voltage
I_ACPR = 3mA
ACPR Pin Leakage Current
V_IN = 0, V_ACPR = 6V
CHRG Pin Output Low Voltage
I_CHRG = 3mA, Charging, C/10 Not Reached
CHRG Pin Leakage Current
V_IN = 0, V_CHRG = 6V
CHRG Pin Weak Pull-Down Current
V_CHRG = 1V, Charging, C/10 Reached
q 75
150 225
mV
q 90
105 120
mV
q 14
24
34
mA
q 2.35 2.45 2.55
V
0.45 0.7
Ω
0.35 0.5
Ω
6.5
V
10.5
V
±10
%
q
1
µA
20
45
70
mV
0
15
mV
q
0.5
0.8
V
q
1
µA
q
0.5
0.8
V
q
1
µA
20
40
70
µA
405242f
2