B431L three terminal adjustable shunt regulator with thermal stability

The Datasheet Archive - 100 Million Datasheets from 7500 Manufacturers.

B431L three terminal adjustable shunt regulator with thermal stability

Datasheet Thumbnail

Top Searches for this datasheet

1.24V Adjustable Shunt Regulator
B431L three terminal adjustable shunt regulator with thermal stability 50ppm/°C. output voltage adjusted value from 1.24V (VREF) with external resistors. These devices have typical output impedance 0.05. Active output circuitry provides very sharp turn-on characteristics making device excellent replacement zener diodes many applications. B431L ideal voltage reference isolated feedback circuit 3.0V switch mode power supplies B431L shunt regulator available with three voltage tolerances (0.5%, 1.0% 2.0%) three package options (SOT-23-3, TO-92, 8SOIC). This allows designer opportunity select optimum combination cost performance their application.
B431L
Features
voltage operation (down 1.24V) Wide operating current.80µA 100mA Trimmed bandgap design. 0.5% Dynamic Output Impedance.0.05 Wide temperature range. -40°C +85°C Available .SOT-23-3, TO-92 8SOIC Pin-to-Pin Replacement .SC431L
Applications
Switching Power Supplies Adjustable Power Supplies Linear Regulators Battery Powered Equipment Monitors, Instrumentation
Connection
Ordering Information
Package TO-92 SO-8 SOT-23 0.5% B431LAZ B431LAM B431LAK3
Tolerance B431LBZ B431LBM B431LBK3
B431LCZ B431LCM B431LCK3
SOT-23-3 (K3) TO-92
Anode
Anode Bottom View
Cathode
Cathode
View
Linear,
2418 Armstrong Street, Livermore, 94550 Tel: (925) 606-5950, Fax: (925) 940-9556
www.baylinear.com
B431L
Absolute Maximum Rating Parameter
Cathode Voltage Continuous Cathode Current Reference Input Current Range Power Dissipation 25°C SOT-23-3 S0-8 TO-92 Thermal Resistance SOT-23-3 S0-8 TO-92 Operating Junction Temperature Range Storage Temperature Range Lead Temperature (Soldering) seconds Rating (Human Body Model)
Recommended Operating Conditions
Symbol
Maximum
0.37 0.75 0.95 +150 +150
Units
TSTG TLEAD TESD
°C/W
Cathode Voltage, Cathode Current, VREF 80µA
Symbol
Electrical Characteristics
Unless specified: 25°C. Values bold apply over full operating ambient temperature. B431LA 0.5% Parameter Reference Voltage VREF Temp Deviation Ratio Change VREF Change Reference Input Current IREF Temperature Deviation Off-State Cathode Current Operating Current Dynamic Impedance Symbol VREF VDEV VREF IREF IREF(DEV) (OFF) Condition VREF1 10mA(1) VREF1, 10mA IA=full range 10mA,VZ VRef 10k, 10mA(2) 10k, 10mA(2) VREF =16V(3) VREF =16V(3) VREF(1) VKA=Vref, IK=100µA 100mA, f1kHA
1.234 1.222
1.240 -2.7 0.15 0.125 0.135 0.05
1.246 1.258 -1.0 0.150
Units mV/V
0.150 0.15
IZ(MIN)
Linear,
2418 Armstrong Street, Livermore, 94550 Tel: (925) 606-5950, Fax: (925) 940-9556
www.baylinear.com
B431L
Electrical Characteristics
Unless specified: 25°C. Values bold apply over full operating ambient temperature. B431LB Parameter Reference Voltage VREF Temp Deviation Ratio Change VREF Change Reference Input Current IREF Temperature Deviation Off-State Cathode Current Operating Current Dynamic Impedance Symbol VREF VDEV VREF IREF IREF(DEV) (OFF) Condition VREF1 10mA(1) VREF1, 10mA(1) IA=full range 10mA,VZ VRef 10k, 10mA(2) 10k, 10mA(2) VREF =16V(3) VREF =16V(3) IZ(MIN) VREF(1) VKA=Vref, IK=100µA 100mA, f1kHA 1.228 1.215 -1.0 0.15 0.125 0.135 0.05 1.240 1.252 1.265 -2.7 0.150 0.150 0.15 mV/V Units
Electrical Characteristics
Unless specified: 25°C. Values bold apply over full operating ambient temperature. B431LC Parameter Reference Voltage VREF Temp Deviation Ratio Change VREF Change Reference Input Current IREF Temperature Deviation Off-State Cathode Current Operating Current Dynamic Impedance Symbol VREF VDEV VREF IREF IREF(DEV) (OFF) Condition VREF1 10mA(1) VREF1, 10mA IA=full range 10mA,VZ VRef 10k, 10mA(2) 10k, 10mA(2) VREF =16V(3) VREF =16V(3) IZ(MIN) VREF(1) VKA=Vref, IK=100µA 100mA, f1kHA
1.215 1.200
1.240 -1.0 0.15 0.125 0.135 0.05
1.265 1.280 -2.7 0.150
Units mV/V
0.150 0.15
Linear,
2418 Armstrong Street, Livermore, 94550 Tel: (925) 606-5950, Fax: (925) 940-9556
www.baylinear.com
B431L
Linear,
2418 Armstrong Street, Livermore, 94550 Tel: (925) 606-5950, Fax: (925) 940-9556
www.baylinear.com
B431L
Test Circuit: Small-Signal Gain Phase
Test Circuit: Stability
Linear,
2418 Armstrong Street, Livermore, 94550 Tel: (925) 606-5950, Fax: (925) 940-9556
www.baylinear.com
B431L
Application Notes:
Stability: Selection Load Capacitor
Selection load capacitor when B431L used shunt regulator, options selection load capacitance across device, decouple load Large capacitance across device, optional decoupling load. reason this that B431L exhibits instability with capacitances range 10nF (approx.) light cathode currents typical). device less stable lower cathode voltage been for. Therefore while device will perfectly stable operating cathode current 10mA with 0.1µF capacitor across will oscillate transiently during start-up cathode current passes through instability region. Selecting very preferably, capacitance, alternatively high capacitance such 10µF will avoid this issue altogether. Since user anyway, most cost effective method capacitance directly across device. trace/via resistance inductance prevent local load decoupling from causing oscillation during transient start-up phase. Note: B431L located right load, load decoupling capacitor directly across then this capacitor will have 10µF
B431
Linear,
2418 Armstrong Street, Livermore, 94550 Tel: (925) 606-5950, Fax: (925) 940-9556
www.baylinear.com
B431L
Test Circuits:
Application Circuit:
+3.3V
0.1µF
470µF
+12V
3055E
2.7V
0.1µF 0.1µF B431L
0.1µF
INTEL
1000µF
output voltage noise, then please 0.1µF between drain gate power MOSFET reduce noise. Linear,
2418 Armstrong Street, Livermore, 94550 Tel: (925) 606-5950, Fax: (925) 940-9556 www.baylinear.com
B431L
SOT-23
0.015 0.018 (0.381 0.457)
0.047 0.055 0.083 0.098 (1.194 1.397) (2.108 2.489)
0.035 0.040 (0.889 1.016) 0.020 0.024 (0.508 0.610) 0.070 0.080 (1.778 2.032)
0.110 0.120 (2.794 3.048)
0.003 0.005 (0.076 0.127)
0.001 0.004 (0.025 0.102)
0.030 0.041 (0.762 1.041)
0.018 0.024 (0.457 0.610)
Advance Information- These data sheets contain descriptions products that development. specifications based engineering calculations, computer simulations and/ initial prototype evaluation. Preliminary Information- These data sheets contain minimum maximum specifications that based initial device characterizations. These limits subject change upon completion full characterization over specified temperature supply voltage ranges.
application circuit examples only explain representative applications devices intended guarantee circuit design permit industrial property right other rights execute. Linear takes responsibility problems related industrial property right resulting from contents shown data book. Typical parameters vary different applications. Customer's technical experts must validate operating parameters including Typical" each customer application.
LIFE SUPPORT NUCLEAR POLICY Linear products authorized should used within life support systems which intended surgical implants into body support sustain life, aircraft, space equipment, submarine, nuclear facility applications without specific written consent Linear President.
Linear,
2418 Armstrong Street, Livermore, 94550 Tel: (925) 606-5950, Fax: (925) 940-9556
www.baylinear.com

B431L three terminal adjustable shunt regulator with thermal stability

Top Searches for this datasheet

Other recent searches