TL431ACUN Analog Intergrations Corporation, TL431ACUN Datasheet

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TL431ACUN

Manufacturer Part Number
TL431ACUN
Description
Adjustable Precision Shunt Regulators
Manufacturer
Analog Intergrations Corporation
Datasheet
Analog Integrations Corporation 4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC
DS-431-06
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FEATURES
TYPICAL APPLICATION CIRCUIT
V
Unconditionally Stable.
Precision Reference Voltage.
AIC431
TL431A :2.495V
TL431
Sink Current Capability: 200mA.
Minimum Cathode Current for Regulation: 250 A.
Equivalent Full-Range Temperature Coefficient:
50 ppm/ C.
Fast Turn-On Response.
Low Dynamic Output Impedance: 0.08 .
Adjustable Output Voltage.
Low Output Noise.
Space Saving SOT-89, SOT-23, TO-92 and SO8
packages.
IN
May 31, 01
+
Precision Regulator
AIC431
:2.495V
:2.495V
V
OUT
=(1+R1/R2)V
0.5%
1.0%
1.6%
TEL: 886-3-5772500
R1
R2
REF
Adjustable Precision Shunt Regulators
+
V
OUT
FAX: 886-3-5772510
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DESCRIPTION
The AIC431/TL431A/TL431 are 3-terminal a d-
justable precision shunt regulators with guar-
anteed temperature stability over the applica-
ble extended commercial temperature range.
The output voltage may be set at any level
greater than 2.495V (V
by selecting two external resistors that act as
a voltage divider network. These devices have
a typical output impedance of 0.08 . Active
output circuitry provides a very sharp turn-on
characteristics, making these devices excel-
lent improved replacements for zener diodes
in many applications.
The precise
ance of the AIC431 makes it possible in
many applications to avoid the use of a vari-
able resistor, consequently saving cost and
eliminating drift and reliability problems asso-
ciated with it.
AIC431/TL431A/TL431
0.5% reference voltage toler-
REF
) up to 30V merely
www.analog.com.tw
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TL431ACUN Summary of contents

Page 1

FEATURES Unconditionally Stable. l Precision Reference Voltage. l AIC431 :2.495V 0.5% TL431A :2.495V 1.0% TL431 :2.495V 1.6% Sink Current Capability: 200mA. l Minimum Cathode Current for Regulation: 250 A. l Equivalent Full-Range Temperature Coefficient ppm/ C. Fast ...

Page 2

... Storage Temperature .......… … … … ..................… … … … … ..… … … … … 150 C Power Dissipation (Notes 1, 2) Note max = 150 C. Note 2: Ratings apply to ambient temperature ORDER NUMBER AIC431CS TL431ACS TL431CS (SO-8) AIC431CUN TL431ACUN TL431CUN (SOT-23) AIC431CUS TL431ACUS TL431CUS (SOT-23) AIC431CX TL431ACX TL431CX ...

Page 3

TEST CIRCUITS REF REF AIC431 Fig. 1 Test Circuit for AIC431 I Z(OFF) Fig. 3 Test circuit for off-state Current n ELECTRICAL CHARACTERISTICS PARAMETER Reference Voltage ...

Page 4

Deviation of Reference Input Current over Temperature R1 =10K , R2 =10mA +85 C (Fig. 2) AIC431/TL431A/TL431 I 0.3 1.2 REF A 4 ...

Page 5

ELECTRICAL CHARACTERISTICS PARAMETER Minimum Cathode current for Regulation Off-State Current Dynamic Output Impedance (Note 4) V MAX DEV MAX MIN V MIN T TEMPERATURE 1 Note 3. Deviation of reference input voltage, V fined as ...

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TYPICAL PERFORMANCE CHARACTERISTICS Reference Input Current vs Temperature 1.20 1.15 1.10 1.05 1.00 0.95 0.90 0.85 0.80 0.75 0.70 -40 - Temperature ( C) Change in Reference Voltage vs Cathode Voltage ...

Page 7

TYPICAL PERFORMANCE CHARACTERISTICS Pulse Response Input Output Stability Boundary Conditions 100 REF 60 40 Stable 20 0 1E-4 1E-3 0.01 Load Capacitance ( F) The areas between the curves represent condition that may cause the ...

Page 8

SYMBOL CATHODE (C) REF (R) AIC431 ANODE (A) n APPLICATION EXAMPLES V IN R1B R1A AIC431 R2A R2B LED on when Low Limit<V Low Limit V (1+R1B/R2B) REF High Limit V (1+R1A/R2A) REF Fig. 4 Voltage Monitor V IN ...

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APPLICATION EXAMPLES AIC431 R2 V (1+R1/R2 OUT REF Fig 8. Higher-Current Shunt Regulator V IN R1B R1A AIC431 R2A R2B Low Limit R1B/ R2B )+ V REF High Limit V ( ...

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... PHYSICAL DIMENSIONS l 8 LEAD PLASTIC SO (unit: mm SOT-23 (unit: mm SOT-23 MARKING Part No. Marking AIC431CUN AC1N TL431CUN AC2N TL431ACUN AC3N Part No. Marking AIC431CUS AC1S TL431CUS AC2S TL431ACUS AC3S AIC431/TL431A/TL431 SYMBOL MIN A 1.35 A1 0.10 B 0. ...

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PHYSICAL DIMENSIONS l SOT-89 (unit: mm SOT-89 MARKING Part No. Marking AIC431CX AC01B TL431CX AC02B TL431ACX AC03B l TO-92 (unit: mm (Continued ...

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