LTC4002_15 Datasheet, PDF (2/16 Pages) Linear Technology – Standalone Li-Ion Switch Mode Battery Charger

LTC4002
ABSOLUTE AXI U RATI GS (Note 1)
Supply Voltage (V_CC) .............................................. 24V
GATE .................................................. (V_CC – 8V) to V_CC
BAT, SENSE .............................................. – 0.3V to 14V
CHRG, NTC ................................................. – 0.3V to 8V
Operating Temperature Range (Note 4) .. – 40°C to 85°C
Storage Temperature Range ................. – 65°C to 125°C
Lead Temperature (S8 Package)
(Soldering, 10 sec) ........................................... 300°C
UW U
PACKAGE/ORDER I FOR ATIO
TOP VIEW
COMP 1
V_CC 2
GATE 3
PGND 4
SGND 5
10 NC
9 NTC
11
8 SENSE
7 BAT
6 CHRG
DD PACKAGE
10-LEAD (3mm × 3mm) PLASTIC DFN
T_JMAX = 125°C, θ_JA = 43°C/W
EXPOSED PAD IS GND (PIN 11)
MUST BE SOLDERED TO PCB
ORDER PART
NUMBER
LTC4002EDD-4.2
LTC4002EDD-8.4
DD PART MARKING
LAGG
LBGY
Consult LTC Marketing for parts specified with wider operating temperature ranges.
TOP VIEW
COMP 1
V_CC 2
GATE 3
GND 4
8 NTC
7 SENSE
6 BAT
5 CHRG
S8 PACKAGE
8-LEAD PLASTIC SO
T_JMAX = 125°C, θ_JA = 110°C/W
ORDER PART
NUMBER
LTC4002ES8-4.2
LTC4002ES8-8.4
S8 PART MARKING
400242
400284
ELECTRICAL CHARACTERISTICS (LTC4002-4.2) The ● denotes the specifications which apply over the full
operating temperature range, otherwise specifications are at T_A = 25°C. V_CC = 10V unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX UNITS
DC Characteristics
V_CC
V_CC Supply Voltage
I_CC
V_CC Supply Current
Current Mode
Shutdown Mode
Sleep Mode
● 4.7
22
V
3
5
mA
3
5
mA
10
20
µA
V_BAT(FLT) Battery Regulated Float Voltage
5V ≤ V_CC ≤ 22V (Note 2)
4.168 4.2 4.232
V
● 4.158
4.242
V
V_SNS(CHG) Constant Current Sense Voltage
3V ≤ V_BAT ≤ 4V (Note 3) 0°C ≤ T_A ≤ 85°C ● 93
100 107
mV
–40°C ≤ T_A ≤ 85°C ● 90
110
mV
V_SNS(TRKL) Trickle Current Sense Voltage
V_BAT = 0V (Note 3)
5
10
15
mV
V_TRKL
Trickle Charge Threshold Voltage
V_BAT Rising
2.75
2.9
3.05
V
V_UV
V_CC Undervoltage Lockout Threshold Voltage V_CC Rising
3.9
4.2
4.5
V
∆V_UV
V_CC Undervoltage Lockout Hysteresis Voltage
200
mV
V_MSD
Manual Shutdown Threshold Voltage
COMP Pin Falling
200
360
500
mV
V_ASD
Automatic Shutdown Threshold Voltage
V_CC – V_BAT
250
mV
I_COMP
COMP Pin Output Current
V_COMP = 1.2V
100
µA
I_CHRG
CHRG Pin Weak Pull-Down Current
V_CHRG = 1V
15
25
35
µA
V_CHRG CHRG Pin Output Low Voltage
I_CHRG = 1mA
0.15
0.3
V
R_EOC
End-of-Charge Ratio
V_SNS(EOC)/V_SNS(CHG)
10
25
32
%
t_TIMER Charge Time Accuracy
10
%
4002f
2