LTC4002 View Datasheet(PDF) - Linear Technology
Part Name
Description
Manufacturer
LTC4002 Datasheet PDF : 16 Pages
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LTC4002
ELECTRICAL CHARACTERISTICS (LTC4002-4.2) The ● denotes the specifications which apply over the full
operating temperature range, otherwise specifications are at TA = 25°C. VCC = 10V unless otherwise noted.
SYMBOL
INTC
VNTC-HOT
PARAMETER
NTC Pin Output Current
NTC Pin Threshold Voltage (Hot)
VNTC-COLD NTC Pin Threshold Voltage (Cold)
∆VRECHRG Recharge Battery Voltage Offset from Full
Charged Battery Voltage
ILEAK
CHRG Pin Leakage Current
Oscillator
fOSC
Switching Frequency
DC
Maximum Duty Cycle
Gate Drive
tr
tf
∆VGATE
∆VGATEHI
∆VGATELO
Rise Time
Fall Time
Output Clamp Voltage
Output High Voltage
Output Low Voltage
CONDITIONS
VNTC = 0.85V
VNTC Falling
Hysteresis
VNTC Rising
Hysteresis
VBAT(FULLCHARGED) – VRECHRG, VBAT Falling
VCHRG = 8V, Charging Stops
CGATE = 2000pF, 10% to 90%
CGATE = 2000pF, 90% to 10%
VCC – VGATE, VCC ≥ 9V
∆VGATEHI = VCC – VGATE, VCC ≥ 7V
∆VGATELO = VCC – VGATE, VCC ≥ 7V
MIN
● 75
● 340
● 2.428
100
TYP
85
355
25
2.465
170
150
MAX
95
370
2.502
200
UNITS
µA
mV
mV
V
mV
mV
1
µA
450 500 550
kHz
100
%
20
ns
50
ns
●
8
V
●
0.3
V
● 4.5
V
(LTC4002-8.4) The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at
TA = 25°C. VCC = 12V unless otherwise noted.
SYMBOL PARAMETER
DC Characteristics
VCC
VCC Supply Voltage
ICC
VCC Supply Current
VBAT(FLT) Battery Regulated Float Voltage
CONDITIONS
Current Mode
Shutdown Mode
Sleep Mode
9V ≤ VCC ≤ 22V (Note 2)
VSNS(CHG) Constant Current Sense Voltage
VSNS(TRKL) Trickle Current Sense Voltage
VTRKL
Trickle Charge Threshold Voltage
VUV
VCC Undervoltage Lockout Threshold Voltage
∆VUV
VCC Undervoltage Lockout Hysteresis Voltage
VMSD
Manual Shutdown Threshold Voltage
VASD
Automatic Shutdown Threshold Voltage
ICOMP
COMP Pin Output Current
ICHRG
CHRG Pin Weak Pull-Down Current
VCHRG CHRG Pin Output Low Voltage
REOC
End-of-Charge Ratio
tTIMER Charge Time Accuracy
INTC
NTC Pin Output Current
6V ≤ VBAT ≤ 8V (Note 3)
VBAT = 0V (Note 3)
VBAT Rising
VCC Rising
COMP Pin Falling
VCC – VBAT
VCOMP = 1.2V
VCHRG = 1V
ICHRG = 1mA
VSNS(EOC)/VSNS(CHG)
VNTC = 0.85V
MIN TYP MAX UNITS
● 8.9
22
V
3
5
mA
3
5
mA
10
20
µA
8.336 8.4 8.464
V
● 8.316
8.484
V
95
100
105
mV
● 93
100 107
mV
5
10
15
mV
4.7
5
5.3
V
7.5
8.5
V
500
mV
200
350
500
mV
250
mV
100
µA
15
25
35
µA
0.15
0.3
V
5
10
15
%
10
%
● 75
85
95
µA
4002f
3
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