AP431A

Manufacturer Part NumberAP431A
ManufacturerAdvanced Power Electronics Corp.
AP431A datasheets

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Specifications of AP431A

Vref2.5Cathode Voltage36
Continuous Cathode Current250Accuracy0.5%,1%
Minimum Cathode Current For Regulation Typ.0.19PackageSOP8,SOT89,TO92,SOT23,SOT23-5
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Advanced Power
Electronics Corp.
ADJUSTABLE PRECISION SHUNT REGULATOR
Features
Precision reference voltage
AP431A : 2.495V ± 0.5%
Sink current capability: 200mA
Minimum cathode current for regulation: 300μA
Equivalent full-range temp coefficient: 30 ppm/
Fast turn-on response
Low dynamic output impedance: 0.2Ω
Programmable output voltage to 36V
Low output noise.
Packages: TO-92,SOT-23, SOT-23-5L(SOT-25)
and SO-8 SOT-89
Halogen Free & RoHS Compliant Product
Ordering Information
Typical Application Circuit
V
IN
C
www.a-power.com.tw
Description
The AP431A are 3-terminal adjustable precision
shunt
stability over the applicable extended commercial
temperature range. The output voltage may be set at
o
any level greater than 2.495V(V
C
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
replacements for Zener diodes in many applications.
The precise (+/-) 1% Reference voltage tolerance of
the AP431A 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.
A P 4 3 1 A X - X - H F
Package
T : TO-92
N/NR : SOT-23
Y : SOT-23-5L(SOT-25)
M : SO-8
G: SOT-89
+ + + +
in
AP431A
AP431
V
= (1+R1/R2)V
OUT
REF
Precision Regulator
AP431A
regulators
with
guaranteed
) up to 36V merely
REF
these
devices
excellent
Halogen Free & RoHS product
Reference Voltage
Tolerance :
A : +/- 0.5%
B : +/- 1%
V
OUT
+ + + +
R1
C
out
R2
temperature
improved
1
201105105

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AP431A Summary of contents

  • Page 1

    ... Zener diodes in many applications. The precise (+/-) 1% Reference voltage tolerance of the AP431A 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. ...

  • Page 2

    ... Rthjc=110 C/W AP431ANR Anode SOT-23 o Rthja=500 C/W o Rthjc=180 C/W www.a-power.com.tw Anode (A) Order Number 3 Cathode AP431AN 2 Anode ( SOT-23 1 REF Rthja=500 Rthjc=180 REF 8 AP431AY Anode SOT-23-5L Anode Rthja=500 Rthjc=180 Cathode 3 AP431AY5 Anode ( SOT-23-5L 1 REF Rthja=500 2 Rthjc=180 REF 2 1 Cathode Symbol Cathode (C) REF (R) Anode (A) ...

  • Page 3

    ... MAX MIN T I TEMPERATURE SYMBOL MIN. 2.470 2.495 2.520 V REF 2.482 V REF = 10V ∆V REF ∆ 10mA I REF = 10mA αI REF I KA(MIN) I KA(OFF MIN T 2 AP431A 150 C TYP. MAX. UNIT V 2.507 8 -1.4 -2.0 mV mV/V 1.4 3.5 µA 0.4 1.2 µA 0.19 0.5 mA 0.1 1.0 µ ...

  • Page 4

    ... V R2 REF Note:V =V (1+R1/R2)+ REF REF× Fig2. Test circuit for V ＞V KA REF is defined as: REF ……………………..……………….. ( Z(OFF) Fig3. Test Circuit for off-state Current AP431A ppm ) C 4 ...

  • Page 5

    ... Cathode Voltage (V) www.a-power.com.tw 600 400 200 -200 1.5 2.5 Reference input current Vs free Temperature 2 1.8 1.6 1.4 1 Cathode current (uA) Vs Cathode Voltage V =Vref KA o Ta= -0.5 0 0.5 1.5 1 Cathode Voltage(v) R1=10K I =10mA KA -50 - Free-Air Temperature( C) AP431A 2 2.5 75 100 125 5 ...

  • Page 6

    ... 0.1 1K 10K f-Frequency-Hz www.a-power.com.tw I =10mA 100K 1M 10M 100K 1M 10M AP431A I KA 15KΩ 9µ 8.25KΩ TEST CIRCUIT FOR VOLTAGE AMPLIFICATION 1KΩ 50Ω TEST CIRCUIT FOR REFERENCE IMPEDANCE Output 232Ω GND Output GND 6 ...

  • Page 7

    ... TA= Stable conditions with C =0.V and KA L BATT AP431A 220Ω Pulse 50Ω Generator f=100kHz TEST CIRCUIT FOR PULSE RESPONSE 150Ω TEST CIRCUIT FOR CURVE R1=10KΩ TEST CIRCUIT FOR CURVE B, C, AND D ...

  • Page 8

    ... Fig.10 Over-Voltage / Under-Voltage Protection Circuit OUT REF REF Fig.6 Current Limiter or Current Source OUT PUSE R1/R2 IMIT Fig.9 Crow Bar Output ON when Low Limint < V < High Limit AP431A I R OUT OUT REF 8 ...

  • Page 9

    ... R6&XX SOT-89 431A YWWS Part Number Package Code Date Code (YWWSSS) Y：Last Digit Of The Year WW：Week SSS：Sequence Part Number : AP431AY : R6 AP431AY5 : R65 ID Code : Internal Part Number : AP431AN : R6 AP431ANR : R6R ID Code : Internal Part Number Date Code (YWWS) Y:Year WW：Week S：Sequence AP431A 9 ...

  • Page 10

    ... Advanced Power Electronics Corp. MARKING INFORMATION TO-92 431A YWWS Part Number Date Code (YWWS) Y:Year WW：Week S：Sequence AP431A 10 ...

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