Datasheet

LTC4265
4
4265fa
TYPICAL PERFORMANCE CHARACTERISTICS
Input Current vs Input Voltage
25k Detection Range Input Current vs Input Voltage Input Current vs Input Voltage
GND VOLTAGE (V)
0
0
INPUT CURRENT (mA)
0.1
0.2
0.3
0.4
0.5
2
468
4265 G01
10
T
A
= 25°C
GND VOLTAGE (V)
(RISING)
0
0
INPUT CURRENT (mA)
10
20
30
40
50
10
20 30 40
4265 G02
50 60
T
A
= 25°C
CLASS 4
CLASS 3
CLASS 2
CLASS 1
CLASS 0
GND VOLTAGE (V)
12
9.5
INPUT CURRENT (mA)
10.5
14
16
4265 G03
10.0
18
20 22
11.0
85°C
–40°C
CLASS 1 OPERATION
Signature Resistance
vs Input Voltage
PWRGD, T2PSE Output Low
Voltage vs Current
Active High PWRGD
Output Low Voltage vs Current Inrush Current vs Input Voltage
CURRENT (mA)
0
V
PWRGD
(V)
V
T2PSE
(V)
0.4
0.6
8
4265 G07
0.2
0
2
4
6
10
0.8
T
A
= 25°C
CURRENT (mA)
0
0
PWRGD (V)
0.4
1.0
0.5
1
4265 G08
0.2
0.8
0.6
1.5
2
T
A
= 25°C
GND – V
OUT
= 4V
GND VOLTAGE (V)
40
85
CURRENT (mA)
115
45 50
4265 G09
55 60
90
100
105
110
95
90
100
105
110
95
Class Operation vs Time On Resistance vs Temperature
GND VOLTAGE (V)
1
22
V1:
V2:
SIGNATURE RESISTANCE (k)
23
25
26
27
3
5
4265 G04
24
7
9
610
24
8
28
RESISTANCE =
DIODES: HD01
T
A
= 25°C
=
$V
$I
V2 – V1
I
2
– I
1
IEEE UPPER LIMIT
IEEE LOWER LIMIT
LTC4265 ONLY
LTC4265 + 2 DIODES
INPUT
VOLTAGE
10V/DIV
CLASS
CURRENT
10mA/DIV
TIME (10µs/DIV)
4265 G05
T
A
= 25°C
JUNCTION TEMPERATURE (°C)
–50
0.2
RESISTANCE (Ω)
0.4
0.6
0.8
1.0
–25
02550
4265 G06
75 100