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AS1920 Datasheet(PDF) 10 Page - ams AG

Part # AS1920
Description  Triple-Voltage, Micro-Power Microprocessor Supervisory Circuits
PDF  14 Pages
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Manufacturer  AMSCO [ams AG]
Direct Link  http://www.ams.com
Logo AMSCO - ams AG

AS1920 Datasheet(HTML) 10 Page - ams AG

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www.austriamicrosystems.com
Revision 1.00
10 - 14
AS1920/AS1922
Datasheet - A p p l i c a t i o n I n f o r m a t i o n
Figure 16. VCCA Tied to DC/DC Feedback Divider
Figure 17. Triple-Supply Monitor w/Manual Reset Switch
AS1920-18
3V
1.8V
Adjustable Reset
Trip Threshold
2.31V
System
Reset
2.5V
2.26k
Ω
1%
27.4k
Ω
1%
22.6k
Ω
1%
1
RESETN
3
VCCA
4
VCC18
5
VCC3
2
GND
AS1920-18
3V
1.8V
†
Optional Resistor Recommended
to Extend ESD Tolerance
System
Reset
2.5V
VTRIP = 2.3V
R1
130k
Ω
0.1%
100nF
100nF
R2
100k
Ω
0.1%
R3
†
10k
Ω
5%
Normally Open
Manual Reset
Switch
VTRIP = VCCA/R2 (R1 + R2)
R1 = R2 ((VTRIP/VCCA) - 1)
2
GND
1
RESETN
3
VCCA
4
VCC18
5
VCC3



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