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Overvoltage Protection Switch/Limiter
Controllers Operate Up to 72V
Typical Operating Characteristics (continued)
(V IN = 14V, C REG = 4.7μF, I REG = 0, unless otherwise noted.)
OVERVOLTAGE SWITCH FAULT
MAX6397-98 toc18
VOLTAGE LIMIT FAULT
MAX6397-98 toc19
V OV = 30V
V IN
V OV = 30V
V IN
200 μ s/div
TRANSIENT RESPONSE
MAX6397-98 toc20
C REG = 10 μ F
I REG = 10mA
400 μ s/div
REGULATOR STARTUP WAVEFORM
MAX6397-98 toc22
I REG = 10mA
20V/div
V GATE
20V/div
V OUT
20V/div
V REG
5V/div
V IN
10V/div
V REG
100mV/div
V IN
10V/div
V REG
2V/div
0V
1ms/div
REG LOAD-TRANSIENT RESPONSE
MAX6397-98 toc21
C REG = 10 μ F
1ms/div
REGULATOR POK ASSERTION
MAX6397-98 toc23
20V/div
V GATE
20V/div
V OUT
20V/div
V REG
5V/div
V REG
AC-COUPLED
500mV/div
I REG
100mA/div
V REG
2V/div
V POK
2V/div
V POK
2V/div
0V
I REG
1ms/div
0A
100 μ s/div
I REG = 0
200mA/div
6
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