
M
Low-Cost, +2.7V to +5.5V, Micropower
Temperature Switches in SOT23 and TO-220
_______________________________________________________________________________________
3
0
5
10
15
20
25
30
35
40
-55
5
-25
35
65
95
125
SUPPLY CURRENT
vs. TEMPERATURE
M
TEMPERATURE (°C)
S
μ
A
0
100
200
300
400
500
600
700
800
-55
5
-25
35
65
95
125
MAX6502/MAX6504
OUTPUT SOURCE RESISTANCE
vs. TEMPERATURE
M
TEMPERATURE (
°
C)
O
)
V
CC
= 2.7V
V
CC
= 5.0V
V
CC
= 3.3V
0
20
40
60
80
100
120
140
160
-55
5
-25
35
65
95
125
OUTPUT SINK RESISTANCE
vs. TEMPERATURE
M
TEMPERATURE (
°
C)
O
)
V
CC
= 2.7V
V
CC
= 5.0V
V
CC
= 3.3V
+15
°
C/div
+100
°
C
+25
°
C
SOT23 THERMAL STEP RESPONSE
IN PERFLUORINATED FLUID
5sec/div
MOUNTED ON 0.75in
2
OF 2 oz. COPPER
0
4
2
8
6
10
12
14
16
-5
TRIP TEMPERATURE (
°
C)
15
-25
-45
35
55
75
95
115
HYSTERESIS
vs. TRIP TEMPERATURE
M
H
°
C
MAX6503
MAX6504
HYST = V
CC
MAX6501
MAX6502
HYST = V
CC
MAX6501
MAX6502
HYST = GND
MAX6503
MAX6504
HYST = GND
+12.5
°
C/div
+100
°
C
+25
°
C
SOT23 THERMAL STEP RESPONSE
IN STILL AIR
MAX6501 TOC5
20sec/div
MOUNTED ON 0.75in
2
OF 2 oz. COPPER
TRACE A: TOVER VOLTAGE, R
PULL-UP
= 100k
TRACE B: V
CC
PULSE DRIVEN FROM 3.3V CMOS LOGIC OUTPUT
MAX6501 START-UP AND POWER-DOWN
(T
<
T
TH
)
B
A
MAX6501 TOC07
TRACE A: TOVER VOLTAGE, R
PULL-UP
= 100k
TRACE B: V
CC
PULSE DRIVEN FROM 3.3V CMOS LOGIC OUTPUT
MAX6501 START-UP DELAY
(T
>
T
TH
)
B
A
MAX6501 TOC07A
__________________________________________Typical Operating Characteristics
(V
CC
= +5V, R
PULL-UP
= 100k
(MAX6501/MAX6503), T
A
= +25°C, unless otherwise noted.)
0
10
20
30
40
50
60
-5
-4
-3
-2
-1
0
1
2
3
4
5
TRIP THRESHOLD ACCURACY
M
ACCURACY (
°
C)
P
SAMPLE SIZE = 300