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MAX17843 датащи(PDF) 44 Page - Maxim Integrated Products

номер детали MAX17843
подробное описание детали  12-Channel, High-Voltage Smart Sensor Data-Acquisition Interface
PDF  131 Pages
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производитель  MAXIM [Maxim Integrated Products]
домашняя страница  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX17843 датащи(HTML) 44 Page - Maxim Integrated Products

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Low-Voltage Regulator
An internal linear regulator supplies low-voltage power
(VAA) for the ADC and digital logic. The regulator is
disabled when SHDNL is active-low or when the die tem-
perature (TDIE) exceeds 145°C. Once VAA decays below
2.95V (typ), an internal power-on reset (POR) is gener-
ated (see Figure 21). This event can be detected with
the ALRTRST bit, as shown in Table 16. After a thermal
shutdown, the regulator is not enabled until TDIE < 130°C
due to hysteresis.
The low-voltage regulator is continuously monitored for
undervoltage, as described in Table 17.
Table 16. Low-Voltage Regulator
Table 17. Low-Voltage Regulator Diagnostic
Figure 21. Low-Voltage Regulator
INPUT: DCIN
INPUT VOLTAGE: 9V to 65V
OUTPUT: VAA
OUTPUT VOLTAGE: 3.3V
DISABLE: VSHNDL < 0.6V or TDIE > 145°C
FAULT
CONDITION
ALERT
LOCATION
VAA undervoltage
VAA < 2.95V
ALRTRST
STATUS[15]
REGULATOR
ENABLE
DCIN
CDCIN
+
RDCIN
LINEAR
REGULATOR
CVAA
CSHDNL
TO SHDNL
CHARGE PUMP
THERMAL
SHUTDOWN
+
-
INTERNAL
POR/
+
-
3.0V
20MV
HYST.
VAA
SHDNL
AGND
MAX17843
12-Channel, High-Voltage Smart Sensor
Data-Acquisition Interface
www.maximintegrated.com
Maxim Integrated │ 44



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