DS1775R5-TU0026R 查看數據表（PDF） - Maxim Integrated

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DS1775R5-TU0026R

Digital Thermometer and Thermostat in SOT23

Maxim Integrated 

DS1775

Digital Thermometer and Thermostat in SOT23

General Description

The DS1775 digital thermometer and thermostat

provides temperature readings that indicate the device’s

temperature. Thermostat settings and temperature

readings are all communicated to/from the DS1775 over

a simple 2-wire serial interface. No additional components

are required; the device is truly a “temperature-to-digital”

converter.

For applications that require greater temperature resolution,

the user can adjust the readout resolution from 9 to 12

bits. This is particularly useful in applications where

thermal runaway conditions must be detected quickly.

The open-drain thermal alarm output, O.S., becomes

active when the temperature of the device exceeds a

user-defined temperature TOS. The number of consecutive

faults required to set O.S. active is configurable by the

user. The device can also be configured in the interrupt or

comparator mode, to customize the method which clears

the fault condition.

As a digital thermometer, the DS1775 is software compatible

with the DS75 2-wire thermal watchdog. The DS1775 is

assembled in a compact 5-pin SOT23 package, allowing

for low-cost thermal monitoring/control in space-

constrained applications. The low thermal mass allows for

time constants previously only possible with thermistors.

Applications

●● Personal Computers/Servers/Workstations

●● Cell Phones

●● Office Equipment

●● Any Thermally-Sensitive System

Benefits and Features

●● Temperature Measurements Require No External

Components

●● Measures Temperatures from -55°C to +125°C

(-67°F to +257°F)

●● ±2.0°C Thermometer Accuracy

●● Thermometer Resolution is Configurable from 9 Bits

to 12 Bits (0.5°C to 0.0625°C Resolution)

●● User-Definable Thermostat Settings

●● Data is Read From/Written to Through a

●● 2-Wire Serial Interface

●● 2.7V to 5.5V Wide Power-Supply Range

●● Software Compatible with DS75 2-Wire Thermal

Watchdog in Thermometer Mode

●● Space-Conscious 5-Pin SOT23 Package with Low

Thermal Time Constant

Ordering Information appears at end of data sheet.

19-6687; Rev 1; 11/16

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