Datasheet

MAX4789–MAX4794
200mA/250mA/300mA Current-Limit Switches
4 _______________________________________________________________________________________
NORMALIZED ON-RESISTANCE
vs. TEMPERATURE
MAX4789 toc07
TEMPERATURE (°C)
NORMALIZED R
ON
603510-15
0.2
0.4
0.6
0.8
1.0
1.2
1.4
0
-40 85
V
IN
= 5V
OUTPUT CURRENT
vs. OUTPUT VOLTAGE
MAX4789 toc08
V
IN
- V
OUT
(V)
OUTPUT CURRENT (mA)
3.02.72.1 2.40.6 0.9 1.2 1.5 1.80.3
50
100
150
200
250
300
350
400
450
500
0
0 3.3
MAX4793/MAX4794
MAX4789/MAX4790
MAX4791/MAX4792
SWITCH TURN-ON/OFF TIMES
vs. TEMPERATURE
MAX4789 toc09
TEMPERATURE (°C)
TURN-ON/OFF TIMES (μs)
603510-15
0.01
0.1
1
10
100
1000
0.001
-40 85
I
LOAD
= 10mA
OFF
ON
V
IN
= 3.3V
V
IN
= 5V
FLAG-BLANKING TIMEOUT
vs. TEMPERATURE
MAX4789 toc10
TEMPERATURE (°C)
FLAG-BLANKING TIME (ms)
603510-15
25
30
35
40
45
50
20
-40 85
CURRENT-LIMIT RESPONSE
MAX4789 toc11
40μs/div
V
IN
2V/div
V
ON
2V/div
I
OUT
100mA/div
V
IN
= 3.3V
C
IN
= 1μF
C
OUT
= 1μF
CURRENT-LIMIT RESPONSE
MAX4789 toc12
20μs/div
V
IN
= V
ON
1V/div
I
OUT
100mA/div
V
IN
= V
ON
C
IN
= 1μF
C
OUT
= 1μF
Typical Operating Characteristics (continued)
(V
IN
= 3.3V, T
A
= +25°C, unless otherwise noted.)