ztl432 Zetex Semiconductors plc., ztl432 Datasheet

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ztl432

Manufacturer Part Number
ztl432
Description
Ztl432 - Adjustable Precision Zener Shunt Regulator
Manufacturer
Zetex Semiconductors plc.
Datasheet

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ZTL431, ZTL432
Cost effective adjustable precision shunt regulator
Description
The ZTL431 and ZTL432 are three terminal
adjustable shunt regulators offering excellent
temperature stability and output current
handling capability up to 100mA. The output
voltage may be set to any chosen voltage
between 2.5 and 20 volts by selection of two
external divider resistors.
The devices can be used as a replacement for
zener diodes in many applications requiring an
improvement in zener performance.
Features
Pin connections
Issue 14 - January 2008
© Zetex Semiconductors plc 2007
Cathode
Temperature range ................ -40 to 125°C
Reference voltage tolerance at 25°C
0.2
Sink current capability ...... 1mA to 100mA
Adjustable output voltage ...... V
Ref
ZTL431_FF SOT23F
ZTL431_F SOT23
typical output impedance
0.5% ..................................... B grade
1% ......................................... A grade
3
2
(top view)
Cathode
Anode
ZTL431ASE5 SOT235
Ref
1 Anode
1
2
3
(top view)
5
4
Cathode
N/C
N/C
REF
ZTL432_FF SOT23F
Ref
to 20V
ZTL432_F SOT23
3
2
(top view)
1
The ZTL432 has the same electrical specifications
as the ZTL431 but has a different pin out in
SOT23 (F-suffix) and SOT23F (FF-suffix).
Both variants are available in 2 grades with
initial tolerances of 1% and 0.5% for the A and
B grades respectively.
These are functionally equivalent to the TL431/
TL432 except for maximum operation voltage,
and have an ambient temperature range of -40
to 125°C as standard.
Applications
Opto-coupler linearization
Linear regulators
Improved zener
Variable reference
1
Anode
Cathode
Cathode
N/C*
† Connected internally to
N/C
N/C
ZTL431_E5 SOT235
*
substrate; should be left
floating or connected to Anode
REF
must be left floating
or connected to pin 5
ZTL431_H6 SC70-6
1
2
3
(top view)
1
2
3
(top view)
www.zetex.com
5
4
Anode
Ref
6
5
4
NC
Anode
N/C

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ztl432 Summary of contents

Page 1

... ZTL431, ZTL432 Cost effective adjustable precision shunt regulator Description The ZTL431 and ZTL432 are three terminal adjustable shunt regulators offering excellent temperature stability and output current handling capability up to 100mA. The output voltage may be set to any chosen voltage between 2.5 and 20 volts by selection of two external divider resistors ...

Page 2

... Active 32B Active ) ........................................ 150mA KA )..................... -50 µA to 10mA REF P DIS T =25° 150° 780mW 330mW 900mW 500mW 330mW 2 ZTL431, ZTL432 Reel Size Tape width Quantity (mm) per reel Concertina N/A 1500 7”, 180mm 8 3000 7”, 180mm 8 3000 7”, 180mm 8 3000 7”, 180mm 8 3000 7” ...

Page 3

... T = -40 to 85° -40 to 125° REF V = 20V REF 0Hz KA REF 3 ZTL431, ZTL432 Min Max Units ref 1 100 mA -40 125 °C = 25°C, unless otherwise stated. A Min. Typ. Max. Units 2.475 2.5 2.525 V 2.487 2.5 2 ...

Page 4

... Typical characteristics 1000 SOT23F 900 800 700 600 500 400 300 200 100 0 0 Issue 14 - January 2008 © Zetex Semiconductors plc 2007 REF KA TO92 SOT23-5 SOT23 SC70 Ambient temperature (°C) 4 ZTL431, ZTL432 = 10mA KA 100 125 www.zetex.com ...

Page 5

... Load Capacitance (F) Stability Boundary Condition Issue 14 - January 2008 © Zetex Semiconductors plc 2007 100000 1000000 V KA 10.0E-9 100.0E-9 1.0E-6 5 ZTL431, ZTL432 < V < 20 10mA 25°C REF www.zetex.com ...

Page 6

... Zetex Semiconductors plc 2007 V+ V OUT V REF V+ V OUT R1 V REF Output V REF R2a OFF + 6 ZTL431, ZTL432 REF REF OUT Higher current shunt regulator 30 0. REF OUT REF Series regulator R1 V REF R2b ...

Page 7

... R2 Stability boundary The ZTL431 and ZTL432 are stable with a range of capacitive loads. A zone of instability exists as demonstrated characteristic graph on page 5. The graph shows typical conditions. To ensure reliable stability a capacitor of 4.7nF or greater is recommended between anode and cathode. Issue 14 - January 2008 © ...

Page 8

... Pin connections - obsolete devices ZTL431_C TO92 (underside view ref Issue 14 - January 2008 © Zetex Semiconductors plc 2007 ZTL431, ZTL432 8 www.zetex.com ...

Page 9

... Max. A 0.80 1.10 0.0315 0.0433 A1 - 0.10 A2 0.80 1.00 0.0315 0.0394 b 0.15 0.30 C 0.08 0.25 0.0031 0.0098 D 2.00 BSC Note: Controlling dimensions are in millimeters. Approximate dimensions are provided in inches 9 ZTL431, ZTL432 Inches Dim. Millimeters Inches Max. Min. Max. Max. Max. - 0.044 e1 1.90 NOM 0.075 NOM E 2.10 2.64 0.083 0.104 E1 1.20 1.40 0.047 0.055 L 0.25 0.62 0.018 0.024 L1 0 ...

Page 10

... Note: Controlling dimensions are in millimeters. Approximate dimensions are provided in inches Dim *° Note: Controlling dimensions are in millimeters. Approximate dimensions are provided in inches 10 ZTL431, ZTL432 Inches Dim. Millimeters Max. Min. Max. Max. Max. E 2.30 2.50 0.0906 0.0984 - 0.10 0.00 0.0043 E1 1.50 1.70 0.0590 0.0669 1.10 1.26 0.0433 0.0496 L 0.48 ...

Page 11

... Packaging details - SOT23-5 Issue 14 - January 2008 © Zetex Semiconductors plc 2007 ZTL431, ZTL432 Dim. Millimeters Min. Max. A 0.90 1.45 A1 0.00 0.15 A2 0.90 1.30 b 0.20 0.50 C 0.09 0.26 D 2.70 3.10 E 2.20 3.20 E1 1.30 1.80 e 0.95 REF e1 1.90 REF L 0.10 0.60 a° 0° 30° Note: Controlling dimensions are in millimeters. Approximate dimensions are provided in inches 11 Inches Min. Max. 0.0354 ...

Page 12

... Fax: (49 Fax: (1) 631 360 8222 europe.sales@zetex.com usa.sales@zetex.com © 2007 Published by Zetex Semiconductors plc Issue 14 - January 2008 © Zetex Semiconductors plc 2007 ZTL431, ZTL432 Asia Pacific Corporate Headquarters Zetex (Asia Ltd) Zetex Semiconductors plc 3701-04 Metroplaza Tower 1 Zetex Technology Park, Chadderton ...

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