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TL431BCDM Datenblatt(PDF) 4 Page - Motorola, Inc

Teilenummer TL431BCDM
Bauteilbeschribung  PROGRAMMABLE PRECISION REFERENCES
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Hersteller  MOTOROLA [Motorola, Inc]
Direct Link  http://www.freescale.com
Logo MOTOROLA - Motorola, Inc

TL431BCDM Datenblatt(HTML) 4 Page - Motorola, Inc

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TL431, A, B Series
4
MOTOROLA ANALOG IC DEVICE DATA
ELECTRICAL CHARACTERISTICS (TA = 25°C, unless otherwise noted.)
Ch
i i
Sb l
TL431AI
TL431AC
TL431B
Characteristic
Symbol
Min
Typ
Max
Min
Typ
Max
Min
Typ
Max
Unit
Reference Input Voltage (Figure 1)
Vref
V
VKA = Vref, IK = 10 mA
TA = 25°C
2.47
2.495
2.52
2.47
2.495
2.52
2.483
2.495
2.507
TA = Tlow to Thigh
2.44
2.55
2.453
2.537
2.475
2.495
2.515
Reference Input Voltage Deviation Over
∆Vref
7.0
3.0
3.0
mV
Temperature Range (Figure 1, Notes 1, 2)
VKA= Vref, IK = 10 mA
Ratio of Change in Reference Input Voltage
DV
ref
mV/V
to Change in Cathode to Anode Voltage
ref
DV
KA
IK = 10 mA (Figure 2),
DV
KA
∆VKA = 10 V to Vref
–1.4
–2.7
–1.4
–2.7
–1.4
–2.7
∆VKA = 36 V to 10 V
–1.0
–2.0
–1.0
–2.0
–1.0
–2.0
Reference Input Current (Figure 2)
∆Iref
µA
IK = 10 mA, R1 = 10 k, R2 = ∞
TA = 25°C
1.8
4.0
1.8
4.0
1.1
2.0
TA = Tlow to Thigh (Note 1)
6.5
5.2
4.0
Reference Input Current Deviation Over
∆Iref
0.8
2.5
0.4
1.2
0.4
1.2
µA
Temperature Range (Figure 2, Note 1)
IK = 10 mA, R1 = 10 k, R2 = ∞
Minimum Cathode Current For Regulation
Imin
0.5
1.0
0.5
1.0
0.5
1.0
mA
VKA = Vref (Figure 1)
Off–State Cathode Current (Figure 3)
Ioff
260
1000
260
1000
230
500
nA
VKA = 36 V, Vref = 0 V
Dynamic Impedance (Figure 1, Note 3)
|ZKA|
0.22
0.5
0.22
0.5
0.14
0.3
VKA = Vref, ∆IK = 1.0 mA to 100 mA
f
≤ 1.0 kHz
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 = Vref max
–Vref min
∆TA = T2 – T1
T2
Ambient Temperature
T1
Vref min
Vref max
The average temperature coefficient of the reference input voltage,
αVref is defined as:
V
ref
ppm
_C
+
D V
ref
V
ref
@25
_C
X106
D T
A
+
D V
ref
x106
D T
A
(V
ref
@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 :
DV
ref +
8.0 mV and slope is positive,
V
ref
@25
_C + 2.495 V, DT
A +
70
_C
a V
ref +
0.008 x 106
70 (2.495)
+ 45.8 ppm _C
3. The dynamic impedance ZKA is defined as |ZKA| +
D V
KA
D I
K
When 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:
|Z
KA
|
[ |Z
KA
|
1
) R1
R2


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