PROGRAMMABLE PRECISION REFERENCE TL431 three-terminal adjustable

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PROGRAMMABLE PRECISION REFERENCE TL431 three-terminal adjustable

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UNISONIC TECHNOLOGIES CO., TL431
PROGRAMMABLE PRECISION REFERENCE
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.
LINEAR INTEGRATED CIRCUIT
FEATURES
Programmable output Voltage 36V. dynamic output impedance 0.2. Sink current capability 100mA. Equivalent full-range temperature coefficient 50ppm/ typical operation over full rated operating temperature range.
Lead-free: TL431K Halogen-free: TL431G TL431NS SOT-23 Lead-free: TL431NSL Halogen-free: TL431NSG
ORDERING INFORMATION
Ordering Number Normal Lead Free Halogen Free TL431-AB3-R TL431K-AB3-R TL431G-AB3-R TL431-AE2-R TL431K-AE2-R TL431G-AE2-R TL431-AE3-R TL431K-AE3-R TL431G-AE3-R TL431NS-AE3-R TL431NSL-AE3-R TL431NSG-AE3-R TL431-AF5-R TL431K-AF5-R TL431G-AF5-R TL431-S08-R TL431K-S08-R TL431G-S08-R TL431-T92-B TL431K-T92-B TL431G-T92-B TL431-T92-K TL431K-T92-K TL431G-T92-K Note: Code: Cathode Anode Reference Assignment Connection Package SOT-89 SOT-23-3 SOT-23 SOT-23 SOT-25 SOP-8 TO-92 TO-92 Packing Tape Reel Tape Reel Tape Reel Tape Reel Tape Reel Tape Reel Tape Bulk
www.unisonic.com.tw Copyright 2009 Unisonic Technologies Co.,
QW-R103-003,Z
TL431
MARKING
PACKAGE SOT-23-3 SOT-23 SOT-23 (TL431NS) 431N SOT-25 Lead Free Halogen Free Lead Free Halogen Free 431. Lead Free Halogen Free MARKING
LINEAR INTEGRATED CIRCUIT
UNISONIC TECHNOLOGIES CO.,
www.unisonic.com.tw
QW-R103-003,Z
TL431
BLOCK DIAGRAM
LINEAR INTEGRATED CIRCUIT
CATHODE REFERENCE CATHODE REFERENCE
2.5V VREF
ANODE(A)
ANODE
UNISONIC TECHNOLOGIES CO.,
www.unisonic.com.tw
QW-R103-003,Z
TL431
PARAMETER SYMBOL IREF
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-23-3/SOT-25 Operating Junction +150 Operating Ambient 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.
RECOMMENDED OPERATING CONDITIONS
PARAMETER Cathode Voltage Cathode Current SYMBOL VREF UNIT
ELECTRICAL CHARACTERISTICS (TC= 25°C, unless otherwise specified.)
PARAMETER SYMBOL TEST CONDITIONS Reference Input Voltage VREF VKA=VREF,IKA=10mA Deviation reference Input Voltage Over VREF VKA=VREF,IKA=10mA temperature Ta70°C VREF Ratio Change Reference Input VKA=10V~VREF IKA=10mA Voltage Change Cathode Voltage VKA=36V~10V Reference Input Current IREF IKA=10mA, R1=10k, Deviation Reference Input Current Over IREF IKA=10mA, R1=10k, Full Temperature Range =full Temperature Minimum Cathode Current Regulation IKA(MIN) VKA=VREF Off-State Cathode Current IKA(OFF) VKA=36V, VREF=0 VKA=VREF, IKA=1 100mA Dynamic Impedance f1.0kHz UNIT 2.470 2.495 2.520 -1.0 -0.5 0.19 0.05 0.15
-2.7 mV/V -2.0 mV/V
UNISONIC TECHNOLOGIES CO.,
www.unisonic.com.tw
QW-R103-003,Z
TL431
TYPICAL CHARACTERISTICS
Cathode Current Cathode Voltage
LINEAR INTEGRATED CIRCUIT
Cathode Current Cathode Voltage
Ta=25°C VKA=VREF
Ta=25°C
Cathode Current (mA)
-100
Cathode Current
IKA(MIN)
-200
Cathode Voltage
Cathode Voltage
Change Reference Input Voltage Cathode Voltage
IKA=100mA Ta=25°C Input Output Voltage
Pulse Response
Change Reference Input Voltage (mV)
Ta=25°C
Cathode Voltage
Time (µs)
UNISONIC TECHNOLOGIES CO.,
www.unisonic.com.tw
QW-R103-003,Z
TL431
TEST CIRCUIT
INPUT
LINEAR INTEGRATED CIRCUIT
INPUT
IKA(OFF)
TL431 VREF
TL431
VKA=VREF VKAVREF IKA(OFF)
APPLICATION CIRCUIT
UTC7805
COMMON
VOUT
VOUT
VREF TL431
TL431
VREF
Shutdown Regulator
Minimum VOUT=VREF+5V Output Control Three -Terminal Fixed Regulator VOUT
Higher-current Shunt Regulator
IOUT
IOUT
VOUT
TL431 IOUT=VREF/RS Constant-current Sink TL431 RS=VREF/RCL 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,Z

PROGRAMMABLE PRECISION REFERENCE TL431 three-terminal adjustable

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