Datasheet

4
LTC1642
1642fb
TYPICAL PERFOR A CE CHARACTERISTICS
UW
TEMPERATURE (°C)
–50 –25 0 25 50 75 100 125
FB THRESHOLD VOLTAGE (V)
1642 G06
1.226
1.224
1.222
1.220
1.218
1.216
1.214
V
CC
= 5V
FB FALLING
FB RISING
TEMPERATURE (°C)
–50 –25 0 25 50 75 100 125
OV THRESHOLD VOLTAGE (V)
1642 G07
1.226
1.224
1.222
1.220
1.218
1.216
1.214
V
CC
= 5V
OV FALLING
OV RISING
OV Threshold Voltage vs
Temperature
FB Threshold Voltage vs
Temperature
V
CC
(V)
3
6 9 12 15
CRWBR DRIVER CURRENT (mA)
1642 G35
2.0
1.6
1.2
0.8
0.4
0
T
A
= 25°C
CRWBR Driver Current vs V
CC
V
CC
(V)
3
6 9 12 15
FB THRESHOLD VOLTAGE (V)
1642 G27
1.232
1.228
1.224
1.220
1.216
1.212
1.208
FB RISING
FB FALLING
T
A
= 25°C
FB Threshold Voltage vs V
CC
OV Threshold Voltage vs V
CC
V
CC
(V)
3
6 9 12 15
OV THRESHOLD VOLTAGE (V)
1642 G28
1.232
1.228
1.224
1.220
1.216
1.212
1.208
OV RISING
OV FALLING
T
A
= 25°C
TEMPERATURE (°C)
–50 –25 0 25 50 75 100 125
CRWBR DRIVER CURRENT (mA)
1642 G13
1.45
1.44
1.43
1.42
1.41
1.40
1.39
1.38
V
CC
= 5V
CRWBR Driver Current vs
Temperature
TEMPERATURE (°C)
–50 –25 0 25 50 75 100 125
CRWBR–TMR THRESHOLD VOLTAGE (mV)
1642 G05
405
404
403
402
401
400
399
398
397
396
395
V
CC
= 5V
CRWBR-TMR Threshold Voltage
vs Temperature
V
CC
(V)
3
6 9 12 15
I
GATE
(µA)
1642 G23
25
20
15
10
5
0
V
GATE
= 0V
T
A
= 25°C
I
GATE
Pull-Up Current vs V
CC
V
GATE
(V)
04
8 12 16 20 24
I
GATE
(A)
1642 G36
128
112
96
80
64
48
32
16
0
V
CC
= 12VT
A
= 25°C
V
CC
= 3.3V
V
CC
= 5V
GATE Pull-Down Current (Current
Limit Active)