ltc4002 Linear Technology Corporation, ltc4002 Datasheet - Page 3

• Manufacturer Part Number: ltc4002
• Description: Standalone Li-ion Switch Mode Battery Charger
• Manufacturer: Linear Technology Corporation

operating temperature range, otherwise specifications are at T
SYMBOL
I
V
V
∆V
I
Oscillator
f
DC
Gate Drive
t
t
∆V
∆V
∆V
(LTC4002-8.4) The
T
SYMBOL
DC Characteristics
V
I
V
V
V
V
V
∆V
V
V
I
I
V
R
t
I
ELECTRICAL CHARACTERISTICS
NTC
LEAK
OSC
r
f
CC
COMP
CHRG
TIMER
NTC
NTC-HOT
NTC-COLD
A
CC
BAT(FLT)
SNS(CHG)
SNS(TRKL)
TRKL
UV
MSD
ASD
CHRG
EOC
RECHRG
GATE
GATEHI
GATELO
UV
= 25°C. V
PARAMETER
NTC Pin Output Current
NTC Pin Threshold Voltage (Hot)
NTC Pin Threshold Voltage (Cold)
Recharge Battery Voltage Offset from Full
Charged Battery Voltage
CHRG Pin Leakage Current
Switching Frequency
Maximum Duty Cycle
Rise Time
Fall Time
Output Clamp Voltage
Output High Voltage
Output Low Voltage
PARAMETER
V
V
Battery Regulated Float Voltage
Constant Current Sense Voltage
Trickle Current Sense Voltage
Trickle Charge Threshold Voltage
V
V
Manual Shutdown Threshold Voltage
Automatic Shutdown Threshold Voltage
COMP Pin Output Current
CHRG Pin Weak Pull-Down Current
CHRG Pin Output Low Voltage
End-of-Charge Ratio
Charge Time Accuracy
NTC Pin Output Current
CC
CC
CC
CC
CC
Supply Voltage
Supply Current
Undervoltage Lockout Threshold Voltage
Undervoltage Lockout Hysteresis Voltage
= 12V unless otherwise noted.
●
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at
CONDITIONS
V
V
Hysteresis
V
Hysteresis
V
V
C
C
V
∆V
∆V
NTC
NTC
NTC
BAT(FULLCHARGED)
CHRG
GATE
GATE
CC
CONDITIONS
Current Mode
Shutdown Mode
Sleep Mode
9V ≤ V
6V ≤ V
V
V
V
COMP Pin Falling
V
V
V
I
V
V
CHRG
GATEHI
GATELO
BAT
BAT
CC
CC
COMP
CHRG
SNS(EOC)
NTC
– V
= 0.85V
Falling
Rising
= 2000pF, 10% to 90%
= 2000pF, 90% to 10%
Rising
– V
= 8V, Charging Stops
= 0V (Note 3)
Rising
= 0.85V
GATE
= 1mA
(LTC4002-4.2) The
CC
BAT
= 1V
= 1.2V
BAT
= V
= V
≤ 22V (Note 2)
/V
, V
≤ 8V (Note 3)
CC
A
CC
SNS(CHG)
CC
= 25°C. V
– V
– V
≥ 9V
– V
GATE
GATE
RECHRG
, V
, V
CC
CC
CC
= 10V unless otherwise noted.
≥ 7V
, V
≥ 7V
●
BAT
denotes the specifications which apply over the full
Falling
●
●
●
●
●
●
●
●
●
●
2.428
8.336
8.316
MIN
MIN
340
100
450
200
4.5
8.9
4.7
75
95
93
15
75
5
5
2.465
0.15
TYP
TYP
355
170
150
500
100
100
500
350
250
100
8.4
7.5
20
50
85
25
10
10
25
10
85
3
3
5
LTC4002
2.502
8.464
8.484
MAX
MAX
370
200
550
100
105
107
500
0.3
5.3
8.5
0.3
95
22
20
15
35
15
10
95
1
8
5
5
UNITS
UNITS
3
4002f
kHz
mV
mV
mV
mV
mA
mA
mV
mV
mV
mV
mV
mV
µA
µA
µA
µA
µA
µA
ns
ns
%
%
%
V
V
V
V
V
V
V
V
V
V