MAX6505 Maxim, MAX6505 Datasheet - Page 6

• Manufacturer Part Number: MAX6505
• Description: Dual Trip SOT Temperature Switches
• Manufacturer: Maxim

Dual Trip SOT Temperature Switches
Table 2. Hysteresis Selection
Figure 2. Temperature Response—MAX6507A04B Outputs
with 2°C Hysteresis
power is dissipated within the IC. This corresponds to a
+0.288°C shift in the die temperature in the SOT23-6.
The MAX6505 and MAX6508 operate from a single-
supply voltage in the +2.5V to +5.5V range. Connect a
0.1µF capacitor on the supply voltage line close to the
V
The MAX6505/MAX6506 provide two outputs that can be
used for fail-safe temperature applications (Figure 3). For
example, the first output can activate a fan when the die
temperature exceeds a certain preset temperature. The
second output asserts at a higher temperature that could
be caused by a wide variety of destructive fault condi-
tions, including latchup, short circuit, and cooling system
failure. This output can be used to initiate such actions
as shutdown of the entire system (see Typical Operating
Circuits).
6
TEMPERATURE
CC
Low-Cost, Fail-Safe Temperature Monitor
_______________________________________________________________________________________
MAX6505
MAX6506
MAX6507
MAX6508
pin for bypassing.
PART
+75
-10
OVER
°
°
OK
C
C
Power Supply and Bypassing
ALARM
2°C
-—
-—
—
CONDITIONS
HYSTERESIS ≈ 2
-10
HYSFERESIS ≈ 2
—
—
—
—
°
C
TYPICAL THRESHOLD HYSTERESIS
°
°
C
C
WARN
10°C
5°C
—
—
The high-level integration, low cost, and small size of the
MAX6505–MAX6508 facilitate the use of multiple temper-
ature monitors to increase system reliability.
Figure 3. Low-Power, High-Reliability, Fail-Safe Temperature
Monitor
*∆T
AW
= T
ALARM
∆T WA = 20°C or 30°C
*
∆T WA = 5°C or 10°C
- T
CONDITIONS
WARN
S1
S0
IS SET TO +30°C.
—
—
+2.5V TO +5.5V
MAX6506
GND
V
CC
ALARM
WARN
10°C
2°C
OK, OVER
—
SYSTEM
SHUTDOWN
FAN CONTROL
S0 = GND
S0 = V CC