Datasheet

MAX4785–MAX4788
50mA/100mA Current-Limit Switches
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Pin Description
SWITCH TURN-ON TIME RESPONSE
MAX4785 toc14
100µs/div
I
OUT
10mA/div
V
ON
V
IN
= 3.3V
CURRENT-LIMIT RESPONSE
(OUT SHORTED TO GND)
MAX4785 toc13
40µs/div
V
OUT
2V/div
I
OUT
2A/div
V
IN
2V/div
C
IN
= 1µF
C
OUT
= 1µF
Typical Operating Characteristics (continued)
(V
IN
= 3.3V, T
A
= +25°C, unless otherwise noted.)
PIN
SC70 SC70
NAME FUNCTION
11OUT Switch Output. Bypass with a 0.1µF capacitor to ground.
22GND Ground
—3FLAG
Fault Output. This open-drain output goes low when the device stays in forward or reverse
current limit for more than the blanking time period. FLAG is high impedance when a fault is
not present or when ON is low.
34ON Active-High Switch-On Input. A logic high turns the switch on.
45IN Input. Bypass with a 0.1µF ceramic capacitor to ground.
FLAG-BLANKING RESPONSE
MAX4785 toc16
4ms/div
FLAG
2V/div
I
OUT
100mA/div
V
IN
2V/div
V
ON
2V/div
SWITCH TURN-OFF TIME RESPONSE
MAX4785 toc15
100ns/div
V
ON
2V/div
I
OUT
10mA/div
V
IN
= 3.3V