TL431 Просмотр технического описания (PDF) - Nanjing International Group Co
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TL431 Datasheet PDF : 2 Pages
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TL431
Programmable Precision Reference
Features:
• Programmable output Voltage to 36 V
• Low dynamic output impedance
• Sink current capability of 1 to 100 mA
• Low output noise voltage
• Fast turn on response
Absolute Maximum Ratings (Ta = 25 OC, unless otherwise noted.)
Parameter
Symbol
Cathode Voltage
VKA
Cathode Current Range (Continuous)
IKA
Reference Input Current Range
IREF
Power Dissipation
PD
Operating Temperature Range
Topr
Junction Temperature
Tj
Storage Temperature Range
Tstg
1. Reference 2. Anode 3. Cathode
TO-92 Plastic Package
Value
Unit
37
V
- 100 to + 150
mA
- 0.05 to + 10
mA
770
mW
- 25 to + 85
OC
150
OC
- 65 to + 150
OC
Recmmended Operating Conditions
Parameter
Cathode Voltage
Cathode Current
Symbol
Min.
Max.
Unit
VKA
VREF
36
V
IKA
1
100
mA
Characteristics at Ta = 25 OC
Parameter
Reference Input Voltage
at VKA = VREF, IKA = 10 mA
Deviation of Reference Input Voltage Over Temperatue
at VKA = VREF, IKA = 10 mA, - 25 OC ≤ Ta ≤ + 85 OC
Ratio of Change in Reference Input Voltage to the Change
in Cathode Voltage
at IKA = 10 mA
∆VKA = 10 V to VREF
∆VKA = 36 V to 10 V
Reference Input Current
at IKA = 10 mA, R1 = 10 KΩ, R2 = ∞
Deviation of Reference Input Current Over Full Temperatue
at IKA = 10 mA, R1 = 10 KΩ, R2 = ∞, - 25 OC ≤ Ta ≤ + 85 OC
Minimum Cathode Current for Regulation
at VKA = VREF
Off-Stage Cathode Current
at VKA = 36 V, VREF = 0
Dynamic Impedance
at VKA = VREF, IKA = 1 to 100 mA, f ≤ 1 KHz
Symbol
VREF
∆VREF
/∆T
∆VREF/∆
VKA
IREF
∆IREF/∆T
IKA(min)
IKA(OFF)
ZKA
Min.
2.44
-
-
-
-
-
-
-
-
Typ.
2.495
4.5
-1.0
-0.5
1.5
0.4
0.45
0.05
0.15
Max.
2.55
17
-2.7
-2
4
1.2
1
1
0.5
Unit
V
mV
mV/V
μA
μA
mA
μA
Ω
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