NCP431A, SC431A,
NCP431B, SC431B,
NCP432B, SC432B Series
Programmable Precision
References
www.onsemi.com
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.
TO−92
LP SUFFIX
CASE 29−11
Pin 1. Reference
2. Anode
3. Cathode
1
2
8
3
SOIC−8 NB
D SUFFIX
CASE 751
1
Features
1
Cathode
Anode
Anode
NC
Reference
Anode
Anode
NC
• 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)
(Top View)
• Low Dynamic Output Impedance, 0.22 W Typical
• Sink Current Capability of 40 mA to 100 mA
3
SOT−23−3
SN SUFFIX
CASE 318
• Equivalent Full−Range Temperature Coefficient of 50 ppm/°C
Typical
1
• Temperature Compensated for Operation over Full Rated Operating
2
Temperature Range
NCP431/SC431
Pin 1. Reference
2. Cathode
NCP432/SC432
Pin 1. Cathode
2. Reference
3. Anode
• SC Prefix for Automotive and Other Applications Requiring Unique
Site and Control Change Requirements; AEC−Q100 Qualified and
PPAP Capable
3. Anode
• These are Pb−Free Devices
Typical Applications
• Voltage Adapters
• Switching Power Supply
• Precision Voltage Reference
• Charger
ORDERING AND MARKING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 14 of this data sheet.
• Instrumentation
© Semiconductor Components Industries, LLC, 2016
1
Publication Order Number:
June, 2016 − Rev. 14
NCP431/D