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PDF AP431A Data sheet ( Hoja de datos )
| Número de pieza | AP431A | |
| Descripción | ADJUSTABLE PRECISION SHUNT REGULATOR | |
| Fabricantes | Diodes Incorporated | |
| Logotipo |  |
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AP431/AP431A
ADJUSTABLE PRECISION SHUNT REGULATOR
Features
General Description
• Precision reference voltage
The AP431 and AP431A are 3-terminal adjustable precision
AP431 : 2.495V ± 1%
shunt regulators with guaranteed temperature stability over the
AP431A : 2.495V ± 0.5%
• Sink current capability: 200mA
• 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 36V
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.
• Low output noise
• Packages: SOT23, SOT23R, SOT25, SC59 (W package
code), SC59 (R package code), SOP-8L and TO92-3L
• SOT23, SOT23R, SOP-8L and SC59: Available in
“Green” Molding Compound (No Br, Sb) (Note 1)
The precise (+/-) 1% Reference voltage tolerance of the
AP431/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.
• Lead Free Finish/RoHS Compliant for Lead Free and
“Green” Products (Note 2)
Ordering Information
A P 4 3 1X X X X
Reference Voltage
Tolerance:
Blank : +/- 1%
A : +/- 0.5%
Package
Blank : SOP-8L
V : TO92-3L
SA : SOT23
W : SC59
R : SC59
Q : SOT25
SR : SOT23R
Lead-Free
L : Lead Free
G : Green (Note 1)
Packing
-B : Bulk
-7/-13 : Taping
-A : Ammo Box (Note 3)
Note: 1. SOT23, SOT23R are “Green” products only.
2. RoHS revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied, see EU Directive Annex Notes 5 and 7.
Device
(Note 4)
Package
Code
Packaging
(Note 5)
7” Tape and Reel
Quantity
Part Number
Suffix
13” Tape and Reel
Ammo Box
Quantity
Part Number
Suffix
Quantity
Part Number
Suffix
AP431(A)SA
SA
SOT23
3000/Tape
& Reel
-7
NA NA NA NA
AP431(A)SR
SR
SOT23R
3000/Tape
& Reel
-7
NA NA NA NA
AP431(A)Q
Lead-free
Q
SOT25
3000/Tape
& Reel
-7
NA NA NA NA
AP431(A)W
W
SC59
3000/Tape
& Reel
-7
NA NA NA NA
AP431(A)R
R
SC59
3000/Tape
& Reel
-7
NA NA NA NA
AP431(A)
SOP-8L
NA
NA
2500/Tape
& Reel
-13
NA
NA
AP431(A)V
V
TO92-3L
NA
NA
NA
NA 2000/Box
-A
Lead-free
Notes:
3. Ammo Box is for TO92-3 Spread Lead.
4. Suffix “A” denotes AP431A device.
5. 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.
AP431/AP431A Rev. 5
1 of 14
www.diodes.com
MARCH 2007
© Diodes Incorporated
1 page  
AP431/AP431A
ADJUSTABLE PRECISION SHUNT REGULATOR
Electrical Characteristics ( TA = 25oC, V+ = +5.0V, unless otherwise stated )
PARAMETER
Reference voltage
Deviation of Reference input voltage over
temperature (Note 8)
Ratio of the change in Reference voltage to
the change in Cathode voltage
Reference input current
Deviation of Reference input current over
temperature
Minimum Cathode current for regulation
Off-state current
Dynamic output impedance (Note 9)
TEST CONDITIONS
VKA = VREF,
I KA = 10mA (Fig.1)
VKA = VREF, IKA = 10mA,
Ta = Full range (Fig.1)
AP431
AP431A
IKA = 10mA (Fig. 2)
VKA = 10V ~VREF
VKA= 36V ~10V
R1 = 10KΩ,R2 = ∞ IKA= 10mA (Fig. 2)
R1 = 10KΩ,R2 = ∞ IKA = 10mA
Ta = Full range (Fig. 2)
VKA = VREF (Fig.1)
VKA = 36V, VREF = 0V (Fig. 3)
V KA = VREF V KA = VREF
∆IKA = 0.1mA ~ 15mA
Frequency ≤ 1KHz (Fig.1)
SYMBOL
VREF
VREF
∆VREF
∆VKA
IREF
αIREF
IKA(MIN)
IKA(OFF)
MIN.
2.470
2.482
⎯
⎯
⎯
⎯
⎯
⎯
⎯
TYP. MAX. UNIT
2.495
2.520
2.507
V
8.0 20 mV
-1.4 -2.0 mV/V
-1 -2 mV/V
1.4 3.5 µA
0.4 1.2 µA
0.19 0.5
0.1 1.0
mA
µA
|ZKA| ⎯ 0.2 0.5 Ω
VMAX
VMIN
VDEV = VMAX - VMIN
TI Temperature
T2
Note: 8. Deviation of reference input voltage, VDEV, is defined as the maximum variation of the reference over the full temperature
range. The average temperature coefficient of the reference input voltage αVREF is defined as:
α VREF
=
(
VDEV
VREF (25°C)
)
⋅10
6
T2 − T1
……………………..……………….. ( ppm°C )
Where:
T2 – T1 = full temperature change.
αVREF can be positive or negative depending on whether the slope is positive or negative.
Note: 9. The dynamic output impedance, RZ, is defined as:
Z KA
=
∆ V KA
∆ IKA
When the device is programmed with two external resistors R1 and R2 (see Figure 2.), the dynamic output impedance of the overall
circuit, is defined as:
ZKA '
=
∆v
∆i
≈ZKA
(1+ RR21)
AP431/AP431A Rev. 5
5 of 14
www.diodes.com
MARCH 2007
© Diodes Incorporated
5 Page 
Marking Information
AP431/AP431A
ADJUSTABLE PRECISION SHUNT REGULATOR
(1) SOT23(R)/SOT25/SC59
Marking Code
(Top View)
XX Y M X
Y : Year
M : Month (A~L)
X : L : Lead Free
G : Green
SOT23(R)/ SOT25/SC59
(2) SOP-8L
(3) TO92-3L
Logo
Part Number
(Top view)
85
AP431 X
YY WW X
14
SOP-8L
Accuracy
Blank: 2.495±1%
A: 2.495±0.5%
L : Lead-Free Package
G : Green
WW : Nth week
YY : Year
Accuracy
Blank: 2.495 + 1%
A: 2.495 + 0.5%
(Top View)
AP431
X Y WW X X
L : Lead Free
Y : Year
WW :Nth week
X : Internal code
TO92-3L
AP431/AP431A Rev. 5
11 of 14
www.diodes.com
MARCH 2007
© Diodes Incorporated
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet AP431A.PDF ] | |
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