MAX4995A Maxim, MAX4995A Datasheet - Page 3
MAX4995A
Manufacturer Part Number
MAX4995A
Description
The MAX4995A/MAX4995AF/MAX4995AL/MAX4995B/MAX4995C programmable current-limit switches feature internal current limiting to prevent damage to host devices due to faulty load conditions
Manufacturer
Maxim
Datasheet
1.MAX4995A.pdf
(13 pages)
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ELECTRICAL CHARACTERISTICS (continued)
(V
T
Note 3: I
Note 4: Turn-on time and turn-off time are defined as the difference in the time between when the output crosses 10% and 90%
Note 5: Blanking time and retry time are generated by the same oscillator. Therefore, the ratio of
Figure 1. Timing Diagram for Measuring Turn-On Time (t
DYNAMIC
Turn-On Time
Turn-Off Time
Current-Limit Reaction Time
Blanking Time
Retry Time
THERMAL PROTECTION
Thermal Shutdown
Thermal-Shutdown Hysteresis
A
IN
= +25°C.)
= +1.7V to +5.5V, R
OUTPUT
Output Logic-Low Voltage
Output Leakage Current
I
of the final output voltage.
is a constant value of 32. See Figures 2 and 3.
LIM
t
t
LIM
RETRY
BLANK
PARAMETER
(mA)
is forward current limit.
=
R
_______________________________________________________________________________________
SETI
SETI
V
(k
2
OUT
= 94.3kΩ, C
9042( )
Ω
)
+
10%
2.48 k
V
(
IN
Ω
SYMBOL
t
t
)
BLANK
t
RETRY
= 1µF, and T
SS
t
t
OFF
t
LIM
90%
SS
50mA to 600mA Programmable
I
V
V
(Note 4)
Switch from on to off, V
R
V
578k , output high and
then short-circuit
applied
(Note 5)
MAX4995A/MAX4995AF/MAX4995AL (Note 5)
SINK
IN
IN
IN
L
A
= 20 , Figure 1 (Note 4)
= V
= 3.3V, C
= 3.3V, R
= T
= 1mA
SS
J
) and Turn-Off Time (t
= -40°C to +125°C, unless otherwise noted. Typical values are at V
= 5.5V,
SETI
OUT
CONDITIONS
=
= 1μF, R
Current-Limit Switches
IN
= 3.3V, C
MAX4995A/AL/B/C
MAX4995AF
L
deasserted
= 20 , Figure 1,
OFF
).
OUT
90%
= 1μF,
t
OFF
10%
MIN
320
10
+150
TYP
16.3
120
120
1.5
15
5
723.2
MAX
22.6
0.4
1
IN
= +3.3V,
UNITS
ms
ms
μA
μs
μs
μs
°C
°C
V
3