B3431BK3

Manufacturer Part NumberB3431BK3
DescriptionAdjustable Shunt Regulator
ManufacturerETC [List of Unclassifed Manufacturers]
B3431BK3 datasheet
 
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Bay Linear
Bay Linear
Bay Linear
Bay Linear
Inspire the Linear Power
Inspire the Linear Power
Inspire the Linear Power
Inspire the Linear Power
Adjustable Shunt Regulator
Description
The Bay Linear B3431 is a three terminal adjustable shunt
regulator with thermal stability over
Temperature range. Using two external resistors allows the
output voltage to be adjusted from 2.5V to 36V. With a sharp
turn on characteristics the B3431 a superior replacement for
zener diode applications.
.
The B3431 shunt regulator has a tolerance of 0.5% which has
proven to be sufficient to overcome all of the other errors in
the system to virtually eliminate the need for trimming in the
power supply manufacturers assembly line and contribute a
significant cost savings.
Package Information
SOT-23-3 (K3) B3431
SOT-23-3 (K3) B3431
SOT-23-3 (K3) B3431
SOT-23-3 (K3) LM3431
SOT-23-3 (K3) LM3431
SOT-23-3 (K3) LM3431
ANODE
ANODE
ANODE
3
3
3
1
1
1
2
2
2
CATHODE
CATHODE
CATHODE
REF
REF
REF
Top View
Top View
Top View
REFERENCE
+
(R)
-
2.5V
Bay Linear, Inc
2478Armstrong St., Livermore CA USA 9550
Features
Wide Operating Range …1mA to100mA
Tight Band Gap Tolerance ….….…0.5%
Low Temp. Coefficient…...…...30 ppm/
Wide temp range of –40 to +105
Available in SOT-23 package
Applications
Switching Power Supplies
Adjustable Power Supplies
Linear Regulators
Battery Powered Equipment
Monitors, TV, VCR
Instrumentation
Ordering & Marking Information
Package
ANODE
ANODE
ANODE
3
3
3
SOT-23
1
1
1
2
2
2
REF
REF
REF
CATHODE
CATHODE
CATHODE
Top View
Top View
Top View
CATHODE (K)
ANODE (A)
Tel: (925) 606-5950, Fax: (925) 940-9556
B3431
o
C
Tolerance
0.5%
1%
2%
B3431AK3
B3431BK3
B3431CK3
www.baylinear.com
o
C

B3431BK3 Summary of contents

  • Page 1

    ... Ordering & Marking Information Package ANODE ANODE ANODE SOT- REF REF REF CATHODE CATHODE CATHODE Top View Top View Top View CATHODE (K) ANODE (A) Tel: (925) 606-5950, Fax: (925) 940-9556 B3431 o C Tolerance 0. B3431AK3 B3431BK3 B3431CK3 www.baylinear.com o C ...

  • Page 2

    Absolute Max Ratings Parameter Cathode Voltage Continuous Cathode Current Reference Input Current Power Dissipation S0-8 TO-92 SOT-23-3 Thermal Resistance SOT-23-3 S0-8 TO-92 Operating Junction Temperature Range Storage Temperature Range Lead Temperature (Soldering) 10 seconds ...

  • Page 3

    Parameter Symbol Reference Voltage V REF V Temp Deviation V REF DEV Ratio of Change in Δ V REF V To Change in V ΔV REF Z Z Reference Input IREF Current I Temperature REF I REF(DEV) Deviation Off-State Cathode ...

  • Page 4

    Calculating Average Temperature Coefficient (TC -10 5000 0.5 -20 -55 -25 0 Temperature (°C) 0.06 mV/°C 0.002 %/°C 24 ppm/°C Test Circuit REF K Figure 1a. Test Circuit 1 2478Armstrong St., ...

  • Page 5

    TYPICAL PERFORMANCE CURVES Low Current Operating Characteristics 900 800 KA REF Temperature Range 105 °C 700 600 500 400 105 °C 300 25 °C 200 -0°C 100 0 -100 -200 -1.0 0 1.0 V ...

  • Page 6

    TYPICAL PERFORMANCE CURVES Reference Input Current 3.0 2.5 2.0 1.5 1.0 0.5 0 -60 - Ambient Temperature ( °C) A Figure 6 Noise Voltage REF ...

  • Page 7

    TYPICAL PERFORMANCE CURVES Small Signal Voltage Gain vs. Frequency Frequency (Hz) 2478Armstrong St., Livermore CA USA 9550 Bay Linear, Inc Dynamic Output Impedance 100 T = ...

  • Page 8

    TYPICAL PERFORMANCE CURVES Pulse Response 6 INPUT OUTPUT Time ( s) Stability Boundary Conditions 100 REF ...

  • Page 9

    Packaging Information SOT-23 0.015 - 0.018 (0.381 - 0.457) 0.020 - 0.024 (0.508 - 0.610) 0.110 - 0.120 (2.794 - 3.048) 0.001 - 0.004 (0.025 - 0.102) Advance Information- These data sheets contain descriptions of products that are in development. ...