MAX6672 MAXIM [Maxim Integrated Products], MAX6672 Datasheet

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MAX6672

Manufacturer Part Number
MAX6672
Description
PWM Output Temperature Sensors in SC70 Packages
Manufacturer
MAXIM [Maxim Integrated Products]
Datasheet
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.
19-2458; Rev 0; 10/02
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.
0.1µF
Industrial and Process Control
HVAC
Automotive
Environmental Control
Isolated Temperature Sensing
* PULLUP RESISTOR REQUIRED ONLY FOR THE MAX6672.
Typical Application Circuit
MAX6672
MAX6673
GND
V
________________________________________________________________ Maxim Integrated Products
CC
General Description
*
PWM Output Temperature Sensors
Applications
GPIO TO CONTROL
INPUT TO TIMER/
SHUTDOWN
COUNTER
µC
o Simple Single-Wire PWM Output
o Tiny SC70 Package
o Low 60µA (typ) Supply Current Consumption
o 1.4kHz Nominal Frequency
o Choice of Outputs
o 2.4V to 5.5V Supply Range
M A X6 6 7 2AX K- T -40°C to +125°C
M A X6 6 7 3AX K- T -40°C to +125°C
TOP VIEW
PART
Open Drain (MAX6672)
Push-Pull (MAX6673)
in SC70 Packages
DOUT
GND
N.C.
TEMP RANGE
1
2
3
Ordering Information
MAX6672
MAX6673
SC70
Pin Configuration
PIN-
PACKAGE
5 SC70-5
5 SC70-5
4
5
V
GND
CC
Features
MARK
ACQ
TOP
ACR
1

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MAX6672 Summary of contents

Page 1

... 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 ...

Page 2

... PWM Output Temperature Sensors in SC70 Packages ABSOLUTE MAXIMUM RATINGS Supply Voltage (V to GND) ................................. -0.3V to +6V CC DOUT to GND (MAX6672)........................................-0.3V to +6V DOUT to GND (MAX6673)..........................-0. DOUT Short to GND ...................................................Continuous ESD Protection (Human Body Model) ............................ ±2000V Continuous Power Dissipation (T = +70°C) A 5-Pin SC70 (derate 2.5mW/°C above +70°C). ............200mW Operating Temperature Range .........................-40° ...

Page 3

PWM Output Temperature Sensors (V = 3.3V +25°C, unless otherwise noted OUTPUT FREQUENCY vs. TEMPERATURE 2.00 1.75 1.50 1.25 1.00 -50 - 100 TEMPERATURE (°C) OUTPUT ACCURACY vs. TEMPERATURE ...

Page 4

... TIME (s) PIN NAME 1 DOUT Digital Output Pin. PWM output, open-drain output (MAX6672), or push-pull output (MAX6673). 2 N.C. No Connection. Not internally connected GND Pin 3 and Pin 4 must be tied together and connected to ground Positive Supply. Bypass with a 0.1µF capacitor to GND. ...

Page 5

... As with any IC, the wiring and circuits must be kept insulated and dry to avoid leakage and corrosion, especially if the part is operated at cold temperatures where condensation can occur. The error caused by power dissipation in the MAX6672/ MAX6673 is negligible. TRANSISTOR COUNT: 601 PROCESS: BiCMOS in SC70 Packages ...

Page 6

PWM Output Temperature Sensors in SC70 Packages (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) Maxim cannot assume responsibility for use of any circuitry other ...

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