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TL431ACD 데이터시트, 핀배열, 회로
Order this document by TL431/D
Programmable
Precision References
The TL431, A, B 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
with two external resistors. These devices exhibit a wide operating current
range of 1.0 mA to 100 mA with a typical dynamic impedance of 0.22 . 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 TL431, A,
B operates as a shunt regulator, it can be used as either a positive or
negative voltage reference.
Programmable Output Voltage to 36 V
Voltage Reference Tolerance: ±0.4%, Typ @ 25°C (TL431B)
Low Dynamic Output Impedance, 0.22 Typical
Sink Current Capability of 1.0 mA to 100 mA
Equivalent Full–Range Temperature Coefficient of 50 ppm/°C Typical
Temperature Compensated for Operation over Full Rated Operating
Temperature Range
Low Output Noise Voltage
TL431, A, B
Series
PROGRAMMABLE
PRECISION REFERENCES
SEMICONDUCTOR
TECHNICAL DATA
LP SUFFIX
PLASTIC PACKAGE
CASE 29
(TO–92)
123
Pin 1. Reference
2. Anode
3. Cathode
8
1
8
1
P SUFFIX
PLASTIC PACKAGE
CASE 626
DM SUFFIX
PLASTIC PACKAGE
CASE 846A
(Micro–8)
ORDERING INFORMATION
Device
Operating
Temperature Range
TL431CLP, ACLP, BCLP
TL431CP, ACP, BCP
TL431CDM, ACDM, BCDM
TA = 0° to +70°C
TL431CD, ACD, BCD
TL431ILP, AILP, BILP
TL431IP, AIP, BIP
TL431IDM, AIDM, BIDM
TA = –40° to +85°C
TL431ID, AID, BID
MOTOROLA ANALOG IC DEVICE DATA
Package
TO–92
Plastic
Micro–8
SOP–8
TO–92
Plastic
Micro–8
SOP–8
Cathode 1
N/C 2
N/C 3
N/C 4
8 Reference
7 N/C
6 Anode
5 N/C
(Top View)
D SUFFIX
PLASTIC PACKAGE
CASE 751
(SOP–8)
8
1
Cathode 1
Anode
2
3
N/C 4
8 Reference
7
Anode
6
5 N/C
(Top View)
SOP–8 is an internally modified SO–8 package. Pins 2,
3, 6 and 7 are electrically common to the die attach flag.
This internal lead frame modification decreases power
dissipation capability when appropriately mounted on a
printed circuit board. SOP–8 conforms to all external
dimensions of the standard SO–8 package.
© Motorola, Inc. 1999
Rev 7
1




TL431ACD pdf, 반도체, 판매, 대치품
TL431, A, B Series
ELECTRICAL CHARACTERISTICS (TA = 25°C, unless otherwise noted.)
TL431AI
TL431AC
TL431BI
Characteristic
Symbol Min Typ Max Min Typ Max Min Typ Max Unit
Reference Input Voltage (Figure 1)
VKA = Vref, IK = 10 mA
TA = 25°C
TA = Tlow to Thigh
Reference Input Voltage Deviation Over
Temperature Range (Figure 1, Notes 1, 2)
VKA= Vref, IK = 10 mA
Ratio of Change in Reference Input Voltage
to Change in Cathode to Anode Voltage
IK = 10 mA (Figure 2),
VKA = 10 V to Vref
VKA = 36 V to 10 V
Reference Input Current (Figure 2)
IK = 10 mA, R1 = 10 k, R2 =
TA = 25°C
TA = Tlow to Thigh (Note 1)
Reference Input Current Deviation Over
Temperature Range (Figure 2, Note 1)
IK = 10 mA, R1 = 10 k, R2 =
Minimum Cathode Current For Regulation
VKA = Vref (Figure 1)
Off–State Cathode Current (Figure 3)
VKA = 36 V, Vref = 0 V
Dynamic Impedance (Figure 1, Note 3)
VKA = Vref, IK = 1.0 mA to 100 mA
f 1.0 kHz
Vref V
Vref
2.47 2.495 2.52 2.47 2.495 2.52 2.483 2.495 2.507
2.44 – 2.55 2.453 – 2.537 2.475 2.495 2.515
– 7.0 30 – 3.0 17 – 3.0 17
mV
DVref
DVKA
mV/V
– –1.4 –2.7 – –1.4 –2.7 – –1.4 –2.7
– –1.0 –2.0 – –1.0 –2.0 – –1.0 –2.0
Iref µA
– 1.8 4.0 – 1.8 4.0 – 1.1 2.0
– – 6.5 –
– 5.2 –
– 4.0
Iref – 0.8 2.5 – 0.4 1.2 – 0.8 2.5 µA
Imin – 0.5 1.0 – 0.5 1.0 – 0.5 1.0 mA
Ioff – 260 1000 – 260 1000 – 230 500 nA
|ZKA| – 0.22 0.5 – 0.22 0.5
– 0.14 0.3
NOTES: 1. Tlow = –40°C for TL431AIP TL431AILP, TL431IP, TL431ILP, TL431BID, TL431BIP, TL431BILP, TL431AIDM, TL431IDM, TL431BIDM
= 0°C for TL431ACP, TL431ACLP, TL431CP, TL431CLP, TL431CD, TL431ACD, TL431BCD, TL431BCP, TL431BCLP, TL431CDM,
TL431ACDM, TL431BCDM
Thigh= +85°C for TL431AIP, TL431AILP, TL431IP, TL431ILP, TL431BID, TL431BIP, TL431BILP, TL431IDM, TL431AIDM, TL431BIDM
= +70°C for TL431ACP, TL431ACLP, TL431CP, TL431ACD, TL431BCD, TL431BCP, TL431BCLP, TL431CDM, TL431ACDM, TL431BCDM
2. The deviation parameter Vref is defined as the difference between the maximum and minimum values obtained over the full operating ambient
temperature range that applies.
Vref max
Vref min
Vref = Vref max
–Vref min
TA = T2 – T1
T1 Ambient Temperature T2
The average temperature coefficient of the reference input voltage, αVref is defined as:
ǒ Ǔppm
+ +Vref _C
D Vref
Vref @ 25_C
D TA
X 106
D Vref x 106
D TA (Vref @ 25_C)
αVref can be positive or negative depending on whether Vref Min or Vref Max occurs at the lower ambient temperature. (Refer to Figure 6.)
+Example : DVref 8.0 mV and slope is positive,
+ + + + ńVref @ 25_C 2.495 V, DTA 70_C
a Vref
0.008 x 106
70 (2.495)
45.8 ppm _C
+3. The dynamic impedance ZKA is defined as |ZKA|
D VKA
D IK
Ȁ [ ǒ ) ǓWhen the device is programmed with two external resistors, R1 and R2, (refer to Figure 2) the total dynamic impedance of the circuit is defined as:
|ZKA |
|ZKA|
1
R1
R2
4 MOTOROLA ANALOG IC DEVICE DATA

4페이지










TL431ACD 전자부품, 판매, 대치품
TL431, A, B Series
Figure 14. Pulse Response
3.0 TA = 25_C
2.0 Output
1.0
0
5.0
0 Input
Input
Monitor 220 Output
Pulse
Generator 50
f = 100 kHz
Gnd
0 4.0 8.0 12 16 20
t, TIME (µs)
Figure 15. Stability Boundary Conditions
140
A) VKA = Vref
120 B) VKA = 5.0 V @ IK = 10 mA
C) VKA = 10 V @ IK = 10 mA
100
D) VKA = 15 V @ IK = 10 mA
D) TA = 25°C
A
B
Stable
A
B
80
Stable
C
60
40 D
20
0
100 pF
1000 pF 0.01 µF 0.1 µF
1.0 µF
CL, LOAD CAPACITANCE
10 µF
Figure 16. Test Circuit For Curve A
of Stability Boundary Conditions
150
IK
V+
CL
Figure 17. Test Circuit For Curves B, C, And D
of Stability Boundary Conditions
150
IK
V+
10 k
CL
TYPICAL APPLICATIONS
Figure 18. Shunt Regulator
Figure 19. High Current Shunt Regulator
V+ Vout
R1
V+ Vout
R1
R2
ǒ Ǔ+ )Vout
1
R1
R2
Vref
R2
ǒ Ǔ+ )Vout
1
R1
R2
Vref
MOTOROLA ANALOG IC DEVICE DATA
7

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