Datasheet

MAX4789–MAX4794
200mA/250mA/300mA Current-Limit Switches
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Pin Description
SWITCH TURN-ON TIME RESPONSE
MAX4789 toc14
100μs/div
V
ON
1V/div
I
OUT
10mA/div
CURRENT-LIMIT RESPONSE
(OUT SHORTED TO GND)
MAX4789 toc13
40μs/div
V
IN
2V/div
V
OUT
2V/div
I
OUT
5A/div
C
IN
= 1μF
C
OUT
= 1μF
Typical Operating Characteristics (continued)
(V
IN
= 3.3V, T
A
= +25°C, unless otherwise noted.)
PIN
TDFN-EP
MAX4789
MAX4791
MAX4793
TDFN-EP
MAX4790
MAX4792
MAX4794
5-SOT23
MAX4789
MAX4791
MAX4793
4-SOT143
MAX4789–
MAX4794
NAME
FUNCTION
1—4—
FLAG
Faul t O utp ut. Thi s op en- d r ai n outp ut g oes l ow w hen the d evi ce stays i n
for w ar d or r ever se cur r ent l i m i t for m or e than the b l anki ng ti m e p er i od .
FLAG i s hi g h i m p ed ance w hen a faul t i s not p r esent or w hen O N i s l ow .
2222
GND
Ground
3 3 3 3 ON Active-High Switch On Input. A logic high turns the switch on.
4 1, 4 — — N.C. No Connection. Not internally connected.
5 5 1 4 IN Input. Bypass IN with a 0.1µF ceramic capacitor to ground.
6 6 5 1 OUT Switch Output. Bypass OUT with a 0.1µF ceramic capacitor to ground.
——EP
Exposed paddle. Connect EP to a large ground plane to maximize
thermal performance. EP is not intended as an electrical connection
point. (TDFN Package only.)
FLAG-BLANKING RESPONSE
MAX4789 toc16
4ms/div
FLAG
2V/div
I
OUT
100mA/div
V
IN
2V/div
V
ON
2V/div
SWITCH TURN-OFF TIME RESPONSE
MAX4789 toc15
200ns/div
V
ON
2V/div
I
OUT
10mA/div