Datasheet
MAX4785–MAX4788
50mA/100mA Current-Limit Switches
_______________________________________________________________________________________ 3
QUIESCENT SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX4785-01
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (µA)
5.55.04.0 4.53.0 3.52.5
10
20
30
40
50
60
70
80
90
0
2.0 6.0
V
ON
= V
IN
SUPPLY CURRENT
vs. TEMPERATURE
MAX4785-02
TEMPERATURE (°C)
SUPPLY CURRENT (µA)
603510-15
10
20
30
40
50
60
70
80
90
0
-40 85
V
ON
= V
IN
V
IN
= 5V
V
IN
= 3.3V
LATCH-OFF CURRENT
vs. TEMPERATURE
MAX4785 toc03
TEMPERATURE (°C)
LATCH-OFF (µA)
603510-15
1
2
3
4
5
6
7
8
9
10
11
12
13
15
14
0
-40 85
V
ON
= V
IN
V
IN
= 5V
V
IN
= 3.3V
10
0.001
-40 85
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
0.01
0.1
1
MAX4785-04
TEMPERATURE (°C)
SHUTDOWN SUPPLY CURRENT (nA)
603510-15
10
-40 85
1
0.1
0.01
0.001
0.0001
SHUTDOWN LEAKAGE CURRENT
vs. TEMPERATURE
MAX4785-05
TEMPERATURE (°C)
SHUTDOWN LEAKAGE CURRENT (nA)
603510-15
V
IN
= 5V
V
IN
= 3.3V
LATCH-OFF LEAKAGE CURRENT
vs. TEMPERATURE
MAX4785 toc06
TEMPERATURE (°C)
LATCH-OFF LEAKAGE CURRENT (nA)
603510-15
0.001
0.01
0.1
1
10
100
0.0001
-40 85
V
IN
= 5V
V
IN
= 3.3V
Typical Operating Characteristics
(V
IN
= 3.3V, T
A
= +25°C, unless otherwise noted.)
Note 1: All parts are 100% tested at +25°C. Limits across the full temperature range are guaranteed by design and correlation.
Note 2: Latch-off current does not include the current flowing into FLAG.
Note 3: The on-time is defined as the time taken for the current through the switch to go from 0mA to full load. The off-time is defined
as the time taken for the current through the switch to go from full load to 0mA.
Note 4: Retry time is typically 7x the blanking time.
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= 2.3V to 5.5V, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at V
IN
= 3.3V, T
A
= +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
UNITS
Blanking Time t
BLANK
Overcurrent fault, Figures 2, 3 14 60 ms
Short-Circuit Current-Limit
Response Time
V
ON
= V
IN
= 3.3V, short circuit applied to
OUT
5µs
Retry Time (Note 4) t
RETRY
MAX4786/MAX4788: overcurrent fault,
Figure 2
98 420 ms