AP431A Advanced Power Electronics Corp., AP431A Datasheet

AP431A

Manufacturer Part Number
AP431A
Description
Manufacturer
Advanced Power Electronics Corp.
Datasheet

Specifications of AP431A

Vref
2.5
Cathode Voltage
36
Continuous Cathode Current
250
Accuracy
0.5%,1%
Minimum Cathode Current For Regulation Typ.
0.19
Package
SOP8,SOT89,TO92,SOT23,SOT23-5

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www.a-power.com.tw
Precision reference voltage
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)
Halogen Free & RoHS Compliant Product
AP431A : 2.495V ± 0.5%
Features
Ordering Information
Typical Application Circuit
Advanced Power
Electronics Corp.
and SO-8 SOT-89
ADJUSTABLE PRECISION SHUNT REGULATOR
V
IN
C
in
+ + + +
AP431A
T : TO-92
N/NR : SOT-23
Y : SOT-23-5L(SOT-25)
M : SO-8
G: SOT-89
AP431
Package
V
Precision Regulator
OUT
o
C
= (1+R1/R2)V
A P 4 3 1 A X - X - H F
The AP431A are 3-terminal adjustable precision
shunt
stability over the applicable extended commercial
temperature range. The output voltage may be set at
any level greater than 2.495V(V
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.
Description
REF
regulators
Reference Voltage
R2
R1
these
Tolerance :
A : +/- 0.5%
B : +/- 1%
+ + + +
devices
C
with
out
V
OUT
guaranteed
excellent
REF
Halogen Free & RoHS product
) up to 36V merely
AP431A
temperature
201105105
improved
1

Related parts for AP431A

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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