ZTL431/ZTL432
Document number: DS33263 Rev. 17 - 2
August 2015
© Diodes Incorporated
COST EFFECTIVE ADJUSTABLE PRECISION SHUNT REGULATOR
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.
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
two
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°C to +125°C as standard.
ZTL431_F SOT23, ZTL431_FF SOT23F
(Top View)
ZTL432_F SOT23, ZTL432_FF SOT23F
(Top View)
(Top View)
†Connected internally to substrate;
should be left floating or connected to Anode
ZTL431ASE5 SOT25
(Top View)
(Top View)
*
must be left floating or
x
Temperature Range ................ -40°C to +125°C
x
Reference Voltage Tolerance at +25°C
0.5%.......................................B grade
1% .........................................A grade
x
0.2 Typical Output Impedance
x
Sink Current Capability…….. 1mA to 100mA
x
Adjustable Output Voltage……V
REF
to 20V
x
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
x
Halogen and Antimony Free. “Green” Device (Note 3)
x
Opto-Coupler Linearization
x
Linear Regulators
x
Improved Zener
x
Variable Reference
Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen and Antimony-free, "Green"
and Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl)
and <1000ppm antimony compounds.
Anode
Cathode
Ref
2
1
3
Anode
Cathode
Ref
2
1
3
Anode
Cathode
Ref
2
1
3
Cathode
Ref
N/C
†
N/C
†
NC
Anode
3
2
1
4
5
6
Cathode
2
Anode
Cathode
N/C
3
1
5
4
Ref
N/C
2
Anode
Cathode
N/C
3
1
5
4
Ref
N/C*
