LINEAR INTEGRATED CIRCUIT DESCRIPTION TL431 three-terminal a
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UNISONIC TECHNOLOGIES CO., TL43PROGRAMMABLE PRECISION REFERENCE
LINEAR INTEGRATED CIRCUIT
DESCRIPTION
TL431 three-terminal adjustable regulator with guaranteed thermal stability over applicable temperature ranges. output voltage value between VREF (approximately 2.5V) with external resistors. provides very wide applications, including shunt regulator, series regulator, switching regulator, voltage reference others
SOT-89
TO-92
SOP-8
FEATURES
*Programmable output Voltage 36V. *Low dynamic output impedance 0.2. *Sink current capability 100mA. *Equivalent full-range temperature coefficient 50ppm/ typical operation over full rated operating temperature range
SOT-23
SOT-25
*Pb-free plating product number: TL431K *Pb-free plating product SOT-23NS type number: TL431NSL
ORDERING INFORMATION
Order Number Assignment Package Normal Lead Free Plating TL431-AB3-R TL431K-AB3-R SOT-89 TL431-AE3-R TL431K-AE3-R SOT-23 TL431NS-AE3-R TL431NSL-AE3-R SOT-23 TL431-AF5-R TL431K-AF5-R SOT-25 TL431-S08-R TL431K-S08-R SOP-8 TL431-S08-T TL431K-S08-T SOP-8 TL431-T92-B TL431K-T92-B TO-92 TL431-T92-K TL431K-T92-K TO-92 TL431-T92-R TL431K-T92-R TO-92 Note: Code: Cathode Anode Reference Connection TL431K-AB3-R (1)Packing Type (2)Package Type (3)Lead Plating Packing Tape Reel Tape Reel Tape Reel Tape Reel Tape Reel Tube Tape Bulk Tape Reel
Tape Box, Bulk, Tape Reel, Tube AB3: SOT-89, AE3: SOT-23, AF5: SOT-25, 08:SOP-8, T92: TO-92 Lead Free Plating, Blank: Pb/Sn Lead Free Plating Only SOT-23NS Type
MARKING (SOT-23/SOT-25)
431N
Lead Plating
Lead Plating
TL43
TL431NS
www.unisonic.com.tw Copyright 2005 Unisonic Technologies Co.,
QW-R103-003,R
TL43BLOCK DIAGRAM
LINEAR INTEGRATED CIRCUIT
CATHODE REFERENCE CATHODE REFERENCE
2.5V VREF
ANODE(A)
ANODE
UNISONIC TECHNOLOGIES CO.,
www.unisonic.com.tw
QW-R103-003,R
TL43PARAMETER
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS (Operating temperature range applies unless otherwise specified)
RATINGS UNIT Cathode Voltage Cathode Current Range(Continuous) -100 +150 Reference Input Current Range -0.05 TO-92 Power Dissipation SOT-89 SOT-23/SOT-25 Operating Junction Temperature +150 Operating Ambient Temperature TOPR Storage Temperature TSTG +150 Note Absolute maximum ratings those values beyond which device could permanently damaged. Absolute maximum ratings stress ratings only functional device operation implied. SYMBOL IREF
RECOMMENDED OPERATING CONDITIONS
PARAMETER Cathode Voltage Cathode Current SYMBOL VREF UNIT
ELECTRICAL CHARACTERISTICS (TC= unless otherwise specified.)
PARAMETER Reference Input Voltage Deviation reference Input Voltage Over temperature Ratio Change Reference Input Voltage Change Cathode Voltage Reference Input Current Deviation Reference Input Current Over Full Temperature Range Minimum Cathode Current Regulation Off-State Cathode Current Dynamic Impedance SYMBOL TEST CONDITIONS VREF VKA=VREF,IKA=10mA VKA=VREF,IKA=10mA VREF/T 0°CTa70°C VKA=10V~VREF VREF/VKA IKA=10mA VKA=36V~10V IREF IKA=10mA, R1=10k, IKA=10mA, R1=10k, IREF/T =full Temperature IKA(MIN) VKA=VREF IKA(OFF) VKA=36V, VREF=0 VKA=VREF, IKA=1 100mA f1.0kHz UNIT 2.470 2.495 2.520 -1.0 -0.5 0.45 0.05 0.15 -2.7 -2.0 mV/V
UNISONIC TECHNOLOGIES CO.,
www.unisonic.com.tw
QW-R103-003,R
TL43 TYPICAL CHARACTERISTICS
Cathode Current Cathode Voltage
LINEAR INTEGRATED CIRCUIT
Cathode Current Cathode Voltage
Cathode Current (mA)
-100
Cathode Current (mA)
Ta=25°C =VREF
Ta=25°C =VREF
IKA(MIN)
-200
Cathode Voltage
Cathode Voltage
Change Reference Input Voltage Cathode Voltage
Pulse Response
Ta=25°C
Change Reference Input Voltage (mV)
Input Output Voltage
IKA=100mA Ta=25°C
Cathode Voltage
Time
Dynamic Impedance Frequency
Small Signal Voltage Amplification Frequency
Ta=25°C KA=0mA 100mA
Ta=25°C IKA=10mA
Voltage Amplification (dB)
Impedance
Frequency (Hz)
Frequency (Hz)
UNISONIC TECHNOLOGIES CO.,
www.unisonic.com.tw
QW-R103-003,R
TL43TYPICAL CHARACTERISTICS (Cont.)
2.52
LINEAR INTEGRATED CIRCUIT
Reference Voltage
2.49 2.48 2.47 2.46 2.45
Temperature
=Vref =5.0V@IK=10mA VKA=10V@IK =10mA VKA=15V@IK =10mA Ta=25
Cathode Current, (mA)
unstable stable stable
100p 100n
Load Capacitance,
UNISONIC TECHNOLOGIES CO.,
www.unisonic.com.tw
QW-R103-003,R
TL43TEST CIRCUIT
RUTC TL43
LINEAR INTEGRATED CIRCUIT
INPUT
INPUT
INPUT
IKA(OFF)
IREF
TL431 TL43
VREF
VREF
VKA=VREF*(1+R1/R2)+IREF*R
VKA=VREF
VREF
IKA(OFF)
APPLICATION CIRCUIT
UTC7805
COMMON
VoUT
VoUT
VREF
TL431 TL43
VREF
VREF
TL43
Vo=(1+R1/R2)*VREF
Vo=(1+R1/R2)*VREF
Vo=(1+R1/R2)*VREF
Shutdown Regulator
Output Control Three -Terminal Fixed Regulator
Higher-current Shunt Regulator
VoUT
VoUT
TL43
TL43
IO=VREF/RS
RS=VREF/RCL
Constant-current Sink
Current Limiting Current Source
assumes responsibility equipment failures that result from using products values that exceed, even momentarily, rated values (such maximum ratings, operating condition ranges, other parameters) listed products specifications products described contained herein. products designed life support appliances, devices systems where malfunction these products reasonably expected result personal injury. Reproduction whole part prohibited without prior written consent copyright owner. information presented this document does form part quotation contract, believed accurate reliable changed without notice
UNISONIC TECHNOLOGIES CO.,
www.unisonic.com.tw
QW-R103-003,R
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