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Shunt Regulator. TL431A Datasheet

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Shunt Regulator. TL431A Datasheet






TL431A Regulator. Datasheet pdf. Equivalent




TL431A Regulator. Datasheet pdf. Equivalent





Part

TL431A

Description

Programmable Shunt Regulator



Feature


www.fairchildsemi.com TL431/TL431A Pro grammable Shunt Regulator Features • • • • Programmable Output Voltage to 36 Volts Low Dynamic Output Impedan ce 0.2Ω Typical Sink Current Capabilit y of 1.0 to 100mA Equivalent Full-Range Temperature Coefficient of 50ppm/°C T ypical • Temperature Compensated For Operation Over Full Rated Operating Tem perature Range • Low Output No.
Manufacture

Fairchild Semiconductor

Datasheet
Download TL431A Datasheet


Fairchild Semiconductor TL431A

TL431A; ise Voltage • Fast Turn-on Response D escription The TL431/TL431A are three-t erminal adjustable regulator series wit h a guaranteed thermal stability over a pplicable temperature ranges. The outpu t voltage may be set to any value betwe en VREF (approximately 2.5 volts) and 3 6 volts with two external resistors The se devices have a typical dynamic outpu t impedance of 0.2Ω..


Fairchild Semiconductor TL431A

Active output circuitry provides a very sharp turn-on characteristic, making t hese devices excel lent replacement for zener diodes in many applications. TO- 92 1 1. Ref 2. Anode 3. Cathode 8-DIP 1 1.Cathode 2.3.4.5.7.NC 6.Anode 8.Ref 8-SOP 1 1. Cathode 2. 3. 6. 7. Anode 8. Ref 4. 5. NC Rev. 1.0.4 ©2011 Fair child Semiconductor Corporation TL431/ TL431A Internal Bl.


Fairchild Semiconductor TL431A

ock Diagram + - Absolute Maximum Ratin gs (Operating temperature range applies unless otherwise specified.) Parameter Cathode Voltage Cathode Current Range (Continuous) Reference Input Current Ra nge Power Dissipation D, LP Suffix Pack age P Suffix Package Operating Temperat ure Range Junction Temperature Storage Temperature Range Symbol VKA IKA IREF P D TOPR TJ TSTG Val.

Part

TL431A

Description

Programmable Shunt Regulator



Feature


www.fairchildsemi.com TL431/TL431A Pro grammable Shunt Regulator Features • • • • Programmable Output Voltage to 36 Volts Low Dynamic Output Impedan ce 0.2Ω Typical Sink Current Capabilit y of 1.0 to 100mA Equivalent Full-Range Temperature Coefficient of 50ppm/°C T ypical • Temperature Compensated For Operation Over Full Rated Operating Tem perature Range • Low Output No.
Manufacture

Fairchild Semiconductor

Datasheet
Download TL431A Datasheet




 TL431A
TL431/TL431A
Programmable Shunt Regulator
www.fairchildsemi.com
Features
• Programmable Output Voltage to 36 Volts
• Low Dynamic Output Impedance 0.2Ω Typical
• 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
Description
The TL431/TL431A 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 excel lent replacement for zener diodes in many
applications.
TO-92
1
1. Ref 2. Anode 3. Cathode
8-DIP
1
1.Cathode 2.3.4.5.7.NC
6.Anode 8.Ref
8-SOP
1
1. Cathode 2. 3. 6. 7. Anode
8. Ref 4. 5. NC
©2011 Fairchild Semiconductor Corporation
Rev. 1.0.4




 TL431A
TL431/TL431A
Internal Block Diagram
+
-
Absolute Maximum Ratings
(Operating temperature range applies unless otherwise specified.)
Parameter
Cathode Voltage
Cathode Current Range (Continuous)
Reference Input Current Range
Power Dissipation
D, LP Suffix Package
P Suffix Package
Operating Temperature Range
Junction Temperature
Storage Temperature Range
Symbol
VKA
IKA
IREF
PD
TOPR
TJ
TSTG
Value
37
-100 ~ +150
-0.05 ~ +10
770
1000
-25 ~ +85
150
-65 ~ +150
Recommended Operating Conditions
Parameter
Cathode Voltage
Cathode Current
Symbol
VKA
IKA
Min
VREF
1.0
Typ
-
-
Max
36
100
Unit
V
mA
mA
mW
mW
°C
°C
°C
Unit
V
mA
2




 TL431A
TL431/TL431A
Electrical Characteristics
(TA = +25°C, unless otherwise specified)
Parameter
Reference Input Voltage
Deviation of Reference
Input Voltage Over-
Temperature (Note 1)
Ratio of Change in
Reference Input Voltage
to the Change in
Cathode Voltage
Reference Input Current
Deviation of Reference
Input Current Over Full
Temperature Range
Minimum Cathode Cur-
rent for Regulation
Off - Stage Cathode
Current
Dynamic Impedance
(Note 2)
Symbol
Conditions
VREF VKA=VREF, IKA=10mA
TL431
TL431A
Unit
Min. Typ. Max. Min. Typ. Max.
2.440 2.495 2.550 2.470 2.495 2.520 V
ΔVREF/ VKA=VREF, IKA=10mA
ΔT TMINTATMAX
- 4.5 17
- 4.5 17 mV
ΔVREF/ IKA
ΔVKA =10mA
ΔVKA=10V-
VREF
ΔVKA=36V-
10V
IREF
IKA=10mA,
R1=10KΩ,R2=
IKA=10mA,
ΔIREF/ΔT R1=10KΩ,R2=
TA =Full Range
- - 1.0 -2.7
- -0.5 -2.0
- 1.5 4
- 0.4 1.2
- -1.0 -2.7
mV/V
- -0.5 -2.0
- 1.5 4 μA
- 0.4 1.2 μA
IKA(MIN) VKA=VREF
- 0.45 1.0
- 0.45 1.0 mA
IKA(OFF) VKA=36V, VREF=0
VKA=VREF,
ZKA IKA=1 to 100mA
f 1.0KHz
- 0.05 1.0
- 0.05 1.0 μA
- 0.15 0.5
- 0.15 0.5 Ω
• TMIN= -25 °C, TMAX= +85 °C
3



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