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L9945 データシート(PDF) 17 Page - STMicroelectronics

部品番号 L9945
部品情報  Automotive fully configurable 8-channel High/Low side MOSFET pre-driver suitable for 12 V and 24 V systems
PDF  151 Pages
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9945 データシート(HTML) 17 Page - STMicroelectronics

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Figure 10. Thermal impedance diagram
GADG2702170740PS
25
20
15
10
5
1.0E-05
1.0E-03
1.0E-01
Time (s)
1.0E+01
1.0E+03
4.4.1
Temperature ADC
An internal ADC monitors the junction temperature. Measure is available reading Temp_ADC[x] bit and applying
the following conversion law:
Eq. (1): Junction temperature conversion law
Tj= 0.28×CODE −65
(1)
The table below reports the electrical characteristics for the temperature ADC.
Note:
VVPS_UV < VVPS < 60 V, all supplies are independent; 4.5 V < VDD5 < 5.5 V; 3.0 V < VIO < 5.5 V, unless
otherwise noted.
Table 6. Temperature ADC electrical characteristics
Symbol
Parameter
Test condition
Min.
Typ.
Max.
Unit
ADC_res
Resolution
-
-
10
-
bit
fADC
Conversion rate
-
-
62.5
-
kHz
Tj_ADC_in
Temperature range
-
-40
-
190
°C
T_ACC
Temp accuracy
From -40 °C to 190 °C
-10
-
10
°C
L9945
Thermal behavior
DS12275 - Rev 8
page 17/151



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