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KA431ZTF 查看數據表(PDF) - Fairchild Semiconductor

零件编号KA431ZTF Fairchild
Fairchild Semiconductor Fairchild
产品描述 (功能)Programmable Shunt Regulator
KA431ZTF Datasheet PDF : 12 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
KA431/KA431A/KA431L
Electrical Characteristics
(TA = +25°C, unless otherwise specified)
Parameter Symbol
Conditions
KA431
KA431A
KA431L
Unit
Min. Typ. Max. Min. Typ. Max. Min. Typ. Max.
Reference Input
Voltage
VREF
VKA=VREF,
IKA=10mA
2.450 2.500 2.550 2.470 2.495 2.520 2.482 2.495 2.508 V
Deviation of
Reference
Input Voltage
Over-
Temperature
ΔVREF/
ΔT
VKA=VREF,
IKA=10mA
TMINTATMAX
- 4.5 17
- 4.5 17
- 4.5 17 mV
Ratio of Change
in Reference
ΔVKA=10
V-VREF
-
-1.0 - 2.7
-
-1.0 - 2.7 -
-1.0 -2.7
Input Voltage ΔVREF/ IKA
to the Change in ΔVKA
Cathode
=10mA ΔVKA=36
V-10V
-
-0.5 -2.0
- -0.5 -2.0
-
mV/V
-0.5 -2.0
Voltage
Reference Input
Current
IREF
IKA=10mA,
R1=10kΩ,R2=
- 1.5 4
- 1.5 4
- 1.5 4 μA
Deviation of
Reference
Input Current
Over Full
Temperature
Range
IKA=10mA,
ΔIREF/ΔT
R1=10kΩ,R2=
TA =Full Range
-
0.4 1.2
-
0.4 1.2
-
0.4 1.2 μA
Minimum
Cathode Cur-
rent for
Regulation
IKA(MIN) VKA=VREF
- 0.45 1.0 - 0.45 1.0 - 0.45 1.0 mA
Off - Stage
Cathode
Current
IKA(OFF)
VKA=36V,
VREF=0
- 0.05 1.0 - 0.05 1.0 - 0.05 1.0 μA
Dynamic
Impedance
VKA=VREF,
ZKA IKA=1 to 100mA
f 1.0kHz
- 0.15 0.5 - 0.15 0.5 - 0.15 0.5 Ω
• TMIN = -25°C, TMAX = +85°C
3
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Description
The KA431/KA431A/KA431L are three-terminal adjustable regulator series with a guaranteed thermal stability over applicable temperature ranges. The output voltage may be set to any value between VREF (approximately 2.5 volts) and 36 volts with two external resistors These devices have a typical dynamic output impedance of 0.2Ω. Active output circuitry provides a very sharp turn on characteristic, making these devices excellent replacement for zener diodes in many applications.

Features
• Programmable Output Voltage to 36 Volts
• Low Dynamic Output Impedance 0.2ΩTypical
• Sink Current Capability of 1.0 to 100mA
• Equivalent Full-Range Temperature Coefficient of 50ppm/°C Typical
• Temperature Compensated for Operation Over Full Rated Operating Temperature Range
• Low Output Noise Voltage
• Fast Turn-on Response

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