Positive High-Voltage, Hot-Swap Controllers with
Selectable Fault Management and Status Polarity
4  _______________________________________________________________________________________
Test Circuit and Timing Diagrams
MAX5934
MAX5934A
ON
LATCH/
RETRY
V
CC
OUT
DC
SENSE
FB2
GATE
TIMER
POL_SEL
FB1
PWRGD2
PWRGD1
PWRGD3
GND
N.C.
5k&
5V
5k&
5V
5k&
5V
Figure 1. Test Circuit
ON
GATE
1.313V
1.233V
5V
1V
t
PHLON
t
PLHON
Figure 2. ON-to-GATE Timing
FB
PWRGD
1.313V
1V
1.233V
1V
t
PLHFB
t
PHLFB
Figure 3. FB_-to-PWRGD_ Timing
V
CC
 - SENSE
GATE
47mV
V
CC
t
PHLSENSE
Figure 4. SENSE-to-GATE Timing
Note 1:  All currents into the device are positive and all currents out of the device are negative. All voltages are referenced to
ground, unless noted otherwise.
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +24V (MAX5934A), V
CC
= +48V (MAX5934), GND = 0V, T
A
= -40癈 to +85癈, unless otherwise noted. Typical values are at
T
A
= +25癈.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
FB_ Low-to-PWRGD_ Low
Propagation Delay
t
PHLFB_
Figures 1, 3
3.2
FB_ High-to-PWRGD_ High
Propagation Delay
t
PLHFB_
Figures 1, 3
1.5
(V
CC
 - V
SENSE
) High-to-GATE
Low Propagation Delay
t
PHLSENSE
T
A
 = +25癈, C
GATE
= 0, Figures 1 and 4
0.5
1.8
2.5
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