NCP431B PDF даташит
Спецификация NCP431B изготовлена «ON Semiconductor» и имеет функцию, называемую «Programmable Precision References». |
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Детали детали
Номер произв | NCP431B |
Описание | Programmable Precision References |
Производители | ON Semiconductor |
логотип |
17 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
1 2 3 3. Cathode
8
1
Cathode
Anode
Anode
NC
SOIC−8 NB
D SUFFIX
CASE 751
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
February, 2013 − Rev. 4
1
Publication Order Number:
NCP431/D
Free Datasheet http://www.datasheet4u.com/
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NCP431A, SC431A, NCP431B, NCP432B Series
Cathode
(K)
Reference
(R)
Cathode
(K)
Reference
(R)
Anode
(A)
Figure 1. Symbol
2.5 Vref
Anode
(A)
Figure 2. Representative Block diagram
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
−0.05 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
MM
ESD Rating
>2000
>200
V
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
RECOMMENDED OPERATING CONDITIONS
Symbol
Condition
VKA Cathode to Anode Voltage
IK Cathode Current
Min
Vref
0.04
Max Unit
36 V
100 mA
THERMAL CHARACTERISTICS
Symbol
RQJA
RQJL
Characteristic
Thermal Resistance,
Junction−to−Ambient
Thermal Resistance,
Junction−to−Lead (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
http://onsemi.com
2
Free Datasheet http://www.datasheet4u.com/
No Preview Available ! |
NCP431A, SC431A, NCP431B, NCP432B Series
ELECTRICAL CHARACTERISTICS (TA = 25°C, unless otherwise noted.)
NCP431AC
NCP431AI
NCP431AV/
SC431AV
Symbol
Characteristic
Min Typ Max Min Typ Max Min Typ Max Unit
Vref
DVrefT
DVref
DVAK
Reference Input Voltage
VKA = Vref, IK = 1 mA
TA = 25°C
TA = Tlow to Thigh (Note 1)
Reference Input Voltage Deviation Over Temperat-
ure Range (Figure 1, Notes 2, 3)
VKA= Vref, IK = 1 mA
Ratio of Change in Reference Input Voltage to
Change in Cathode to Anode Voltage
IK = 1 mA (Figure 2),
DVKA = 10 V to Vref
DVKA = 36 V to 10 V
2.475 2.500 2.525
2.475 2.500 2.525
−−
−
− −2.00 −3.1
− −1.28 −1.9
2.475 2.500 2.525 2.475 2.500 2.525
2.465 2.500 2.525 2.460 2.500 2.525
− 5.0 10
− 10 15
− −2.00 −3.1
− −1.28 −1.9
− −2.00 −3.1
− −1.28 −1.9
V
mV
mV/
V
Iref Reference Input Current (Figure 2)
IK = 1 mA, R1 = 220 k, R2 = R
TA = −40°C to +125°C
nA
− 81 190 − 81 190 − 81 190
DIrefT
Reference Input Current Deviation Over Temperat-
ure Range (Figure 2, Note 2, 3)
−
22
55
IK = 1 mA, R1 = 10 k, R2 = R
Imin Minimum Cathode Current For Regulation
VKA = Vref (Figure 1)
− 40 80
− 22 55
− 40 80
nA
− 22 55
− 40 80 mA
Ioff Off−State Cathode Current (Figure 3)
VKA = 36 V, Vref = 0 V
− 180 1000 − 180 1000 − 180 1000 nA
|ZKA|
Dynamic Impedance (Figure 1, Note 3)
VKA = Vref, DIK = 1.0 mA to 100 mA
f v 1.0 kHz
− 0.22 0.5
− 0.22 0.5
− 0.22 0.5 W
1. Tlow = −40°C for NCP431AI, NCP431AV, SC431AV
= 0°C for NCP431AC
Thigh = 70°C for NCP431AC
= 85°C for NCP431AI
= 125°C for NCP431AV, SC431AV
2. Guaranteed by design
3. The deviation parameter DVrefT is defined as the difference between the maximum and minimum values obtained over the full operating
ambient temperature range that applies.
The average temperature coefficient of the reference input voltage, Vref is defined as:
ǒ ǓDVref
ppm
Vref ° C +
Vref@25° C
DTA
106 DVref 106
+
DTAǒVref@25° CǓ
aVref can be positive or negative depending on whether Vref Min or Vref Max occurs at the lower ambient temperature.
Example: DVrefT = 17 mV and slope is positive
Vref = 2.5 V, DTA = 165°C (from −40°C to +125°C)
aVref
+
0.017 @ 106
165 @ 2.5
+
41.2
ppmń°
C
4. The dynamic impedance ZKA is defined as: (|ZKA| = (DVKA/DIK). When the device is programmed with two external resistors, R1 and R2,
the total dynamic impedance of the circuit is defined as: |ZKA’| [ |ZKA| (1 + (R1/R2)).
5. SC431AVSNT1G − Tlow = −40°C, Thigh = 125°C. Guaranteed by design. SC Prefix for Automotive and Other Applications Requiring Unique
Site and Control Change Requirements; AEC−Q100 Qualified and PPAP Capable.
http://onsemi.com
3
Free Datasheet http://www.datasheet4u.com/
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Номер в каталоге | Описание | Производители |
NCP431A | Programmable Precision References | ON Semiconductor |
NCP431B | Programmable Precision References | ON Semiconductor |
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