MAX6510 データシートの表示（PDF） - Maxim Integrated

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MAX6510

Resistor-Programmable SOT Temperature Switches

Maxim Integrated 

MAX6509/MAX6510

Resistor-Programmable

SOT Temperature Switches

+5V

VCC

MAX6510HAUT

GND

HYST OUTSET OUT

VCC

VCC

OUT

MAX6510CAUT

HYST

OUTSET

SET

GND

+5V

RSET

30k

VCC

OUT

MAX6509HAUK

GND

HYST

RSET

30k

OVERTEMP

OUT OF RANGE

UNDERTEMP

VCC

RSET

100k

RPULL-UP

100k

OUT OF RANGE

VCC

OUT

MAX6509CAUK

GND

SET

HYST

RSET

100k

Figure 5. Temperature-Window Detector

Low-Cost, Fail-Safe Temperature Monitor

In high-performance/high-reliability applications, multi-

ple temperature monitoring is important. The high-level

integration and low cost of the MAX6509/MAX6510

facilitate the use of multiple temperature moni-

tors to increase system reliability. Figure 6 shows two

MAX6510s with different temperature thresholds. This

ensures that fault conditions that can overheat the

mon-itored device cause no permanent damage. The

first temperature monitor activates the fan when the die

temperature exceeds +45°C. The second MAX6510

triggers a system shutdown if the die temperature

reaches +75°C. The second temperature monitor’s out-

put asserts when a wide variety of destructive fault con-

ditions occur, including latchups, short circuits, and

cooling-system failures.

+5V

HEAT

µP

VCC

OUTSET

VCC

MAX6510HAUT TEMPERATURE

FAULT

GND

OUT

SET

HYST

RSET

30k

HEAT

VCC

HYST

OUT

OUTSET

MAX6510HAUT

SET

FAN

CONTROL

VCC

RSET

GND

55k

Figure 6. Low-Power, High-Reliability, Fail-Safe Temperature

Monitor

Set-Point Resistor

To set the trip-point temperature, connect a resistor

between SET and GND. The resistor’s value is deter-

mined either from the RSET vs. Temperature graphs

(see Typical Operating Characteristics) or from the

equations below.

To set the temperature trip point from -40°C to 0°C, use

the following equation:

RSET(kΩ) = [(1.3258 · 105) / (T+1.3)] - 310.1693 -

[(5.7797 · 106) / (T+1.3)2]

To set the temperature trip point from 0°C to +125°C,

use the following equation:

RSET(kΩ) = [(8.3793 · 104) / T] - 211.3569 +

[(1.2989 · 105) / T2]

where T is the trip temperature in Kelvin.

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