Datasheet

MAX890L
1.2A, Current-Limited, High-Side
P-Channel Switch with Thermal Shutdown
4 _______________________________________________________________________________________
-40 0 20 60 8040-20 100
OFF-SWITCH CURRENT
vs. TEMPERATURE
MAX890 toc04
TEMPERATURE (°C)
OFF-SWITCH CURRENT (nA)
1000
0.01
1
10
0.1
100
0.6
-40 -20 4020 100
NORMALIZED ON-RESISTANCE
vs. TEMPERATURE
0.8
MAX890 toc05
TEMPERATURE (°C)
NORMALIZED R
ON
06080
1.2
1.0
0.7
1.3
1.1
0.9
I
OUT
= 1/2I
LIMIT
0
020 8060 140
I
OUT
/I
SET
RATIO
vs. I
LIMIT
400
MAX890 toc06
I
LIMIT
(%)
I
OUT
/I
SET
RATIO
40 100 120
1200
800
200
1400
1000
600
0
0.2
0.4
0.6
0.8
1.0
1.2
NORMALIZED OUTPUT CURRENT
vs. OUTPUT VOLTAGE
MAX890 toc07
OUTPUT VOLTAGE (V)
NORMALIZED OUTPUT CURRENT
01 234 56
I
LIMIT
V
IN
= 5V
260
60
TURN-ON TIME
vs. TEMPERATURE
100
220
MAX890 toc08
TEMPERATURE (°C)
t
ON
(μs)
180
140
240
80
200
160
120
I
LOAD
= I
LIMIT
V
IN
= 3V
V
IN
= 5V
-40 -20 4020 10006080
0
TURN-OFF TIME
vs. TEMPERATURE
2
8
MAX890 toc09
TEMPERATURE (°C)
t
OFF
(μs)
6
4
1
7
5
3
I
LOAD
= I
LIMIT
V
IN
= 3V
V
IN
= 5V
-40 -20 4020 10006080
__________________________________________Typical Operating Characteristics
(T
A
= +25°C, unless otherwise noted.)
0
2
4
6
8
10
12
14
QUIESCENT CURRENT
vs. INPUT VOLTAGE
MAX890 toc01
INPUT VOLTAGE (V)
01 234 56
ON = GND
I
OUT
= 0A
QUIESCENT CURRENT (μA)
7
-40 -20 4020 100
QUIESCENT CURRENT
vs. TEMPERATURE
9
MAX890 toc02
TEMPERATURE (°C)
QUIESCENT CURRENT (μA)
06080
13
11
8
14
12
10
V
IN
= 3V
V
IN
= 5V
100
0.01
-40 -20 2006040 80 100
OFF-SUPPLY CURRENT
vs. TEMPERATURE
0.1
MAX890 toc03
TEMPERATURE (°C)
OFF-SUPPLY CURRENT (nA)
1
10