SC431B Precision References Datasheet

SC431B Datasheet, PDF, Equivalent


Part Number

SC431B

Description

Programmable Precision References

Manufacture

ON Semiconductor

Total Page 17 Pages
Datasheet
Download SC431B Datasheet


SC431B
NCP431A, SC431A,
NCP431B, SC431B,
NCP432B, SC432B Series
Programmable Precision
References
The NCP431/NCP432 integrated circuits are threeterminal
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 noload 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 FullRange 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; AECQ100 Qualified and
PPAP Capable
These are PbFree Devices
Typical Applications
Voltage Adapters
Switching Power Supply
Precision Voltage Reference
Charger
Instrumentation
www.onsemi.com
Pin 1. Reference
2. Anode
1 2 3 3. Cathode
STRAIGHT LEAD
BULK PACK
12 3
BENT LEAD
TAPE & REEL
AMMO PACK
TO92
LP SUFFIX
CASE 2911
TO92
LPRA SUFFIX
CASE 2911
8
1
SOIC8 NB
D SUFFIX
CASE 751
Cathode
Anode
Anode
NC
1
(Top View)
Reference
Anode
Anode
NC
3
1
2
NCP431/SC431
Pin 1. Reference
2. Cathode
3. Anode
SOT23
SN SUFFIX
CASE 318
NCP432/SC432
Pin 1. Cathode
2. Reference
3. Anode
ORDERING AND MARKING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 14 of this data sheet.
© Semiconductor Components Industries, LLC, 2011
January, 2019 Rev. 16
1
Publication Order Number:
NCP431/D

SC431B
NCP431A, SC431A, NCP431B, SC431B, NCP432B, SC432B Series
Cathode
(K)
Reference
(R)
Cathode
(K)
Reference
(R)
Anode
(A)
Figure 1. Symbol
2.5 Vref
Anode
(A)
Figure 2. Representative Block diagram
This device contains 20 active transistors
MAXIMUM RATINGS (Full operating ambient temperature range applies, unless otherwise noted)
Symbol
Rating
Value
Unit
VKA Cathode to Anode Voltage
IK Cathode Current Range, Continuous
Iref Reference Input Current Range, Continuous
TJ Operating Junction Temperature
TA Operating Ambient Temperature Range
Tstg Storage Temperature Range
PD Total Power Dissipation @ TA = 25°C
Derate above 25°C Ambient Temperature
D, LP Suffix Plastic Package
SN1 Suffix Plastic Package
37
100 to +150
5 to +10
150
40 to +125
65 to +150
0.70
0.52
V
mA
mA
°C
°C
°C
W
PD Total Power Dissipation @ TC = 25°C
Derate above 25°C Case Temperature
D, LP Suffix Plastic Package
1.5 W
HBM
CDM
ESD Rating (Note 1)
Human Body Model per JEDEC JESD22A114F
Charged Device Model per JEDEC JESD22C101E
>2000
>1000
V
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality
should not be assumed, damage may occur and reliability may be affected.
1. This device contains latchup protection and exceeds ±100 mA per JEDEC standard JESD78.
RECOMMENDED OPERATING CONDITIONS
Symbol
Condition
Min Max Unit
VKA Cathode to Anode Voltage
Vref 36 V
IK Cathode Current
0.04 100 mA
Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond
the Recommended Operating Ranges limits may affect device reliability.
THERMAL CHARACTERISTICS
Symbol
RQJA
RQJL
Characteristic
Thermal Resistance,
JunctiontoAmbient
Thermal Resistance,
JunctiontoLead (Lead 3)
LP Suffix Package
(50 mm2 x 35 mm Cu)
176
D Suffix Package
(50 mm2 x 35 mm Cu)
210
SN Suffix Package
(10 mm2 x 35 mm Cu)
255
Unit
°C/W
75 68 80 °C/W
www.onsemi.com
2


Features NCP431A, SC431A, NCP431B, SC431B, NCP432 B, SC432B Series Programmable Precisio n References The NCP431/NCP432 integrat ed circuits are three−terminal progra mmable shunt regulator diodes. These mo nolithic IC voltage references operate as a low temperature coefficient zener which is programmable from Vref to 36 V using two external resistors. These de vices exhibit a wide operating current range of 40 mA to 100 mA with a typical dynamic impedance of 0.22 W. The chara cteristics of these references make the m excellent replacements for zener diod es in many applications such as digital voltmeters, power supplies, and op amp circuitry. The 2.5 V reference makes i t convenient to obtain a stable referen ce 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 th is device an ideal choice for secondary regulators in SMPS adapters with extremely low no−load consumpti.
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