Rainbow Electronics MAX6673 - Manual

General Description
The MAX6672/MAX6673 are low-current temperature
sensors with a single-wire output. These temperature
sensors convert the ambient temperature into a 1.4kHz
PWM output, which contains the temperature informa-
tion in its duty cycle. The MAX6672 has an open-drain
output and the MAX6673 has a push-pull output.
The MAX6672/MAX6673 operate from 2.4V to 5.5V with
a maximum supply current of 150µA. Both devices fea-
ture a single-wire output that minimizes the number of
pins necessary to interface with a microprocessor.
The MAX6672/MAX6673 are available in 5-pin SC70
packages.
Applications
Industrial and Process Control
HVAC
Automotive
Environmental Control
Isolated Temperature Sensing
Features
♦ Simple Single-Wire PWM Output
♦ Tiny SC70 Package
♦ Low 60µA (typ) Supply Current Consumption
♦ 1.4kHz Nominal Frequency
♦ Choice of Outputs
Open Drain (MAX6672)
Push-Pull (MAX6673)
♦ 2.4V to 5.5V Supply Range
MAX6672/MAX6673
PWM Output Temperature Sensors
in SC70 Packages
________________________________________________________________ Maxim Integrated Products 1
N.C.
GND GND
1 5 V
CC
DOUT
MAX6672
MAX6673
SC70
TOP VIEW
2
3 4
Pin Configuration
V CC
GND
GPIO TO CONTROL
SHUTDOWN
INPUT TO TIMER/
COUNTER
0.1 µF MAX6672
MAX6673
µC
*
* PULLUP RESISTOR REQUIRED ONLY FOR THE MAX6672.
Typical Application Circuit
19-2458; Rev 0; 10/02
Ordering Information
PART TEMP RANGE
PIN-
PACKAGE TOP
MARK
M A X6 6 7 2AX K- T -40 °C to +125°C 5 SC70-5 ACQ
M A X6 6 7 3AX K- T -40 °C to +125°C 5 SC70-5 ACR
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.