AMS3431C 查看數據表（PDF） - Advanced Monolithic Systems Inc
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AMS3431C Datasheet PDF : 6 Pages
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TYPICAL APPLICATIONS (Continued)
V+
R1A
Over Voltage/Under Voltage
Protection Circuit
R1B
OUT ON
WHEN
LOW < V+ < HIGH
LIMIT
LIMIT
R2B
R2A
AMS3431
Voltage Monitor
V+
R1B
R1A
R2A
R2B
LOW LIMIT ≈ VREF( 1+R1B/R2B)+VBE
LOW LIMIT ≈ VREF( 1+R1A/R2A)
LOW LIMIT ≈ VREF( 1+R1B/R2B)+VBE
LOW LIMIT ≈ VREF( 1+R1A/R2A)
LIMIT
LED ON WHEN
LOW LIMIT < V+ < HIGH
Delay Timer
V+
R
ON
OFF
C
DELAY = R*C*ln*V+/(V+)-VREF
Current Limiter or Current Source
IO
V+
RCL
Constant Current Sink
V+
IO
IO =VREF/RCL
RS
IO = VREF/RS
Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723
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