NCP431A Просмотр технического описания (PDF) - ON Semiconductor
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NCP431A Datasheet PDF : 16 Pages
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NCP431A, SC431A,
NCP431B, NCP432B Series
Programmable Precision
References
The NCP431/NCP432 integrated circuits are three−terminal
programmable shunt regulator diodes. These monolithic IC voltage
references operate as a low temperature coefficient zener which is
programmable from Vref to 36 V using two external resistors. These
devices exhibit a wide operating current range of 40 mA to 100 mA
with a typical dynamic impedance of 0.22 W. The characteristics of
these references make them excellent replacements for zener diodes in
many applications such as digital voltmeters, power supplies, and op
amp circuitry. The 2.5 V reference makes it convenient to obtain a
stable reference from 5.0 V logic supplies, and since the NCP431/
NCP432 operates as a shunt regulator, it can be used as either a
positive or negative voltage reference. Low minimum operating
current makes this device an ideal choice for secondary regulators in
SMPS adapters with extremely low no−load consumption.
Features
• Programmable Output Voltage to 36 V
• Low Minimum Operating Current: 40 mA, Typ @ 25°C
• Voltage Reference Tolerance: ±0.5%, Typ @ 25°C
(NCP431B/NCP432B)
• Low Dynamic Output Impedance, 0.22 W Typical
• Sink Current Capability of 40 mA to 100 mA
• Equivalent Full−Range Temperature Coefficient of 50 ppm/°C
Typical
• Temperature Compensated for Operation over Full Rated Operating
Temperature Range
• SC Prefix for Automotive and Other Applications Requiring Unique
Site and Control Change Requirements; AEC−Q100 Qualified and
PPAP Capable
• These are Pb−Free Devices
Typical Applications
• Voltage Adapters
• Switching Power Supply
• Precision Voltage Reference
• Charger
• Instrumentation
http://onsemi.com
TO−92
LP SUFFIX
CASE 29−11
Pin 1. Reference
2. Anode
123
3. Cathode
8
1
SOIC−8 NB
D SUFFIX
CASE 751
Cathode
Anode
Anode
NC
1
(Top View)
Reference
Anode
Anode
NC
3
1
2
NCP431
Pin 1. Reference
2. Cathode
3. Anode
SOT−23−3
SN SUFFIX
CASE 318
NCP432
Pin 1. Cathode
2. Reference
3. Anode
ORDERING AND MARKING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 13 of this data sheet.
© Semiconductor Components Industries, LLC, 2013
1
February, 2013 − Rev. 4
Publication Order Number:
NCP431/D
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