ZTL431 Datasheet, PDF (1/12 Pages) Zetex Semiconductors – Cost effective adjustable precision shunt regulator

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 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.
The devices can be used as a replacement for
zener diodes in many applications requiring an
improvement in zener performance.
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.
Features
Applications
• Temperature range ................ -40 to 125°C
• Reference voltage tolerance at 25°C
• 0.5% ..................................... B grade
• 1% ......................................... A grade
• Low output noise
• 0.2 typical output impedance
• Sink current capability ...... 1mA to 100mA
• Adjustable output voltage ...... V_REF to 20V
• Opto-coupler linearization
• Linear regulators
• Improved zener
• Variable reference
Pin connections
ZTL431_F SOT23
ZTL431_FF SOT23F
(top view)
ZTL432_F SOT23
ZTL432_FF SOT23F
(top view)
ZTL431_H6 SC70-6
(top view)
Cathode 1
Ref 2
Ref 1
3 Anode
Cathode 2
Cathode 1
6 Anode
3 Anode
* _P² _review⁵ _*
REF 3
4 NC
Issue 8 - April 2007
1
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www.zetex.com