SBAA705 August   2025 ISOTMP35-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2ISOTMP35-Q1 Key Information for Design
    1. 2.1 Simplified Design Schematic to Sense Temperature
    2. 2.2 Temperature Transfer Table
  6. 3PWM Controller UCC28C43-Q1 Key Information for Design
    1. 3.1 UCC28C43-Q1 Internal Block Diagram
    2. 3.2 UCC28C43-Q1 Voltage Mode Setting
    3. 3.3 UCC28C43-Q1 Heating Frequency Setting
  7. 4OPA333-Q1 Key Information
  8. 5Air Heater Circuitry Design Sample
    1. 5.1 Working Mechanism Explanation
    2. 5.2 Air Heater Schematic Design
      1. 5.2.1 Working Condition
      2. 5.2.2 Design Procedure
  9. 6Typical Heater Schematic
  10. 7References

2.2 Temperature Transfer Table

Table 2-1 shows excellent linearity of ISOTMP35-Q1 between sensed temperature and analog output, this can be read by ADC unit in MCU or be used as analog feedback signal for PWM controller such as UCC28C43-Q1 to form closed loop of temperature control.

Table 2-1 ISOTMP35-Q1 Temperature Transfer Table
TEMPERATURE (°C) VOUT (mV) CALCULATED LINEAR VALUES VOUT (mV) PIECEWISE LINEAR VALUES
–40 100 100
–35 150 150
–30 200 200
–25 250 250
–20 300 300
–15 350 350
–10 400 400
–5 450 450
0 500 500
5 550 550
10 600 600
15 650 650
20 700 700
25 750 750
30 800 800
35 850 850
40 900 900
45 950 950
50 1000 1000
55 1050 1050
60 1100 1100
65 1150 1150
70 1200 1200
75 1250 1250
80 1300 1300
85 1350 1350
90 1400 1400
95 1450 1450
100 1500 1500
105 1550 1550.5
110 1600 1601
115 1650 1651.5
120 1700 1702
125 1750 1752.5
130 1800 1805/5
135 1850 1858/5
140 1900 1911.5
145 1950 1964.5
150 2000 2017.5