AP432/AP432A
ADJUSTABLE PRECISION SHUNT REGULATOR
Description
Features
The AP432 and AP432A are 3-terminal adjustable precision
shunt regulators with guaranteed temperature stability over the
applicable extended commercial temperature range. The output
voltage may be set at any level greater than 2.495V (VREF) up to
36V merely by selecting two external resistors that act as a
voltage divider network. These devices have a typical output
impedance of 0.2Ω. Active output circuitry provides very sharp
turn-on characteristics, making these devices excellent improved
replacements for Zener diodes in many applications.
•
Precision reference voltage
AP432 : 1.24V ± 1%
AP432A : 1.24V ± 0.5%
•
Sink current capability: 200mA with PowerDITM5
package
•
•
•
•
•
•
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Minimum cathode current for regulation: 300µA
Equivalent full-range temp coefficient: 30 ppm/oC
Fast turn-on response
Low dynamic output impedance: 0.2Ω
Programmable output voltage to 20V
Low output noise
The precise (+/-) 1% Reference voltage tolerance of the
AP432/AP432A make it possible in many applications to avoid
the use of a variable resistor, consequently saving cost and
eliminating drift and reliability problems associated with it.
Packages: SOT-23. SC-59, PowerDITM5 and DFN under
development
Ordering Information
A P 4 3 2 A X X X
Packing
Reference Voltage
Package
Lead-Free
SA
SN
PB
FB
: SOT23
: SC-59
: PowerDI™5
: DFN
Tolerance:
Blank : +/- 1%
F : Lead-Free
G : Green
Blank : Tube or bulk
-7/-13 : Taping
A
: +/- 0.5%
7” Tape and Reel
13” Tape and Reel
Device
(Note 1)
Package
Code
Quantity
Part
Number
Quantity
Part
Number
Packaging
Suffix
Suffix
AP432(A)SA
AP432(A)SN
AP432(A)PB
AP432(A)FB
SA
SN
PB
FB
SOT-23
SC-59
PowerDI™5
DFN
3000/Tape & Reel
3000/Tape & Reel
NA
-7
-7
10,000/Tape & Reel
10,000/Tape & Reel
5000/Tape & Reel
10,000/Tape & Reel
-13
-13
-13
-13
NA
-7
3000/Tape & Reel
Typical Application Circuit
VIN
VOUT
+
+
R1
R2
Cin
Cout
DP432
VOUT = (1+R1/R2)VREF
Precision Regulator
Notes: 1. Suffix “A” denotes AP432A device.
2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at
http://www.diodes.com/datasheets/ap02001.pdf.
DS30748 Rev. 1 - 2
1 of 12
AP432/AP432A
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