View AP431L-7_734913.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

AP431/AP431A
ADJUSTABLE PRECISION SHUNT REGULATOR
Features
* Precision reference voltage AP431 : 2.495V 1% AP431A : 2.495V 0.5% Sink current capability: 200mA Minimum cathode current for regulation: 300A o Equivalent full-range temp coefficient: 30 ppm/ C Fast turn-on response Low dynamic output impedance: 0.2 Programmable output voltage to 36V 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) Lead Free Finish/RoHS Compliant for Lead Free and "Green" Products (Note 2)
General Description
The AP431 and AP431A 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 0.2. Active output circuitry provides very sharp turn-on characteristics, making these devices excellent improved replacements for Zener diodes in many applications. 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.
* * * * * * * * * *
Ordering Information
A P 4 3 1X X X X
Reference Voltage Tolerance: Blank : +/- 1% A : +/- 0.5%
Package Blank : V : SA : W : R : : Q SR : SOP-8L TO92-3L SOT23 SC59 SC59 SOT25 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)
AP431(A)SA AP431(A)SR
Lead-free
7" Tape and Reel 13" Tape and Reel Ammo Box Package Packaging Part Number Part Number Part Number Code (Note 5) Quantity Quantity Quantity Suffix Suffix Suffix
SA SR Q W R SOT23 SOT23R SOT25 SC59 SC59 SOP-8L V TO92-3L 3000/Tape & Reel 3000/Tape & Reel 3000/Tape & Reel 3000/Tape & Reel 3000/Tape & Reel NA NA -7 -7 -7 -7 -7 NA NA NA NA NA NA NA 2500/Tape & Reel NA NA NA NA NA NA -13 NA NA NA NA NA NA NA 2000/Box NA NA NA NA NA NA -A
AP431(A)Q AP431(A)W AP431(A)R AP431(A)
Lead-free
AP431(A)V
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
MARCH 2007
www.diodes.com
(c) Diodes Incorporated
AP431/AP431A
ADJUSTABLE PRECISION SHUNT REGULATOR
Pin Assignment
Package
Pin Configuration (Top View) NC 1 2 4 CATHODE 3 REF
Package
Pin Configuration (Top View) CATHODE
1 2 3 4 8 7 6 5
REF ANODE ANODE NC
5
ANODE SOP-8L
SOT25
NC
ANODE ANODE NC
SC-59 ( Package Code-W)
3 ANODE 1 2
REF SOT23 CATHODE ANODE 1
3
REF
2
CATHODE
3 SC-59 ( Package Code-R) 3 ANODE 1 2 REF CATHODE SOT23R ANODE 1 2
CATHODE
REF
3 Cathode 2 Anode 1 REF
AP431/AP431A Rev. 5
+ +
TO92-3L
+
2 of 14
MARCH 2007
www.diodes.com
(c) Diodes Incorporated
AP431/AP431A
ADJUSTABLE PRECISION SHUNT REGULATOR
Typical Application Circuit
VIN VOUT
+
Cin AP431
R1
+
Cout
R2
VOUT = (1+R1/R2)VREF Precision Regulator
Block Diagram
REF (R) + Cathode (C) Anode (A) VREF
Symbol
Cathode (C)
REF (R)
Anode (A)
AP431/AP431A Rev. 5
3 of 14
MARCH 2007
www.diodes.com
(c) Diodes Incorporated
AP431/AP431A
ADJUSTABLE PRECISION SHUNT REGULATOR
Absolute Maximum Ratings
Symbol
Vcv ICC IREF TOP TST
Parameter
Cathode Voltage Continuous Cathode Current Reference Input Current Operating Temperature Storage Temperature SOT23(R) SOT25 Power Dissipation SC59 (Notes 6, 7) SOP-8L TO92-3L
Rating
+36 -10 to +250 10 -20 to +85 -65 to +150 250 250 400 600 780
Unit
V mA mA o C o C mW mW mW mW mW
PD
Note: 6. TJ, max =150C 7. Ratings apply to ambient temperature at 25C
AP431/AP431A Rev. 5
4 of 14
MARCH 2007
www.diodes.com
(c) Diodes Incorporated
AP431/AP431A
ADJUSTABLE PRECISION SHUNT REGULATOR
Electrical Characteristics
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)
( TA = 25oC, V+ = +5.0V, unless otherwise stated )
TEST CONDITIONS
AP431 VKA = VREF, AP431A I KA = 10mA (Fig.1) VKA = VREF, IKA = 10mA, Ta = Full range (Fig.1) VKA = 10V ~VREF IKA = 10mA (Fig. 2) VKA= 36V ~10V R1 = 10K,R2 = IKA= 10mA (Fig. 2) R1 = 10K,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 MIN.
VREF VREF VREF VKA IREF IREF IKA(MIN) IKA(OFF) |ZKA| 2.470 2.482
TYP. MAX. UNIT
2.495 8.0 -1.4 -1 1.4 0.4 0.19 0.1 0.2 2.520 2.507 20 -2.0 -2 3.5 1.2 0.5 1.0 0.5 V mV mV/V mV/V A A mA A
VMAX VDEV = VMAX - VMIN 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 VREF is defined as:
VREF
VDEV ) 10 6 VREF (25C) .............................................. ( ppm ) = C T2 - T1 (
Where: T2 - T1 = full temperature change. VREF 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:
Z KA =
'
v Z KA i
(1 +
R1 ) R2
AP431/AP431A Rev. 5
5 of 14
MARCH 2007
www.diodes.com
(c) Diodes Incorporated
AP431/AP431A
ADJUSTABLE PRECISION SHUNT REGULATOR
Test Circuits
Input
IN
IN
VKA IKA R1 VREF IREF VREF
IKA VKA
VKA
R2
IZ(OFF)
Note:VKA=VREF(1+R1/R2)+IREFxR1
Fig 1. Test Circuit for VKA= VREF
Fig 2. Test Circuit for VKA > VREF
Fig 3. Test Circuit for Off-State Current
AP431/AP431A Rev. 5
6 of 14
MARCH 2007
www.diodes.com
(c) Diodes Incorporated
AP431/AP431A
ADJUSTABLE PRECISION SHUNT REGULATOR
Typical Performance Characteristics
Cathode Current vs Cathode Voltage
100 VKA =Vref Ta=25oC Cathode Current (uA) 600 VKA =Vref Ta=25oC
Cathode Current (uA) vs Cathode Voltage
Cathode Current (mA)
400
0
200
0
-100
-1.5
0.5 -0.5 1.5 Cathode Voltage (v)
2.5
-200 -1
-0.5
0
0.5 1.5 1 Cathode Voltage(v)
2
2.5
Reference Voltage vs Free-Air Temperature
Reference Input Current (uA) 2500 Reference Voltage (mV) 2495 2490 2485 2480 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 Free-Air Temperature (oC)
Reference Input Current vs Free Temperature
2 1.8 1.6 1.4 1.2 1 -50 R1=10K IKA=10mA
-25
0 25 50 75 Free-Air Temperature (oC)
100
125
Change in Reference Voltage vs Cathode Voltage
Change in Reference Voltage (mv) 0 -2 -4 -6 -8 -10 -12 0 5 10 15 20 Cathode Voltage (V) 25 30 IKA=10mA Ta=25oC
AP431/AP431A Rev. 5
7 of 14
MARCH 2007
www.diodes.com
(c) Diodes Incorporated
AP431/AP431A
ADJUSTABLE PRECISION SHUNT REGULATOR
Typical Performance Characteristics
Small-Signal Voltage Amplification vs Frequency
60
( Continued )
AV-Small Signal Voltage Amplification (dB)
50 40 30 20 10 0 1K 10K
IKA=10mA TA=25oC 15K 9F
Output IKA 232
+ 8.25K -
Test Circuit for Voltage Amplification
f-Frequency-Hz
100K
1M
10M
Reference Impedance vs Frequency
100
I KA=10mA o TA =25 C
| ZKA | Reference Impedance ()
10
50 +
1
Test Circuit for Reference Impedance
0.1 1K
10K
100K
1M
10M
f-Frequency-Hz
AP431/AP431A Rev. 5
8 of 14
www.diodes.com
1K
+
GND
Output I KA
GND
MARCH 2007
(c) Diodes Incorporated
AP431/AP431A
ADJUSTABLE PRECISION SHUNT REGULATOR
Typical Performance Characteristics
Pulse Response
6
TA=25oC
( Continued )
5 Input and Output Voltage-V
Input
220 Output
4
Pulse Generator f=100kHz
50
3
Output
GND
2
Test Circuit for Pulse Response
1
0 -1 0 1 2 3 t-Time-S 4 5 6 7
STABILITY BOUNDARY CONDITIONS
100 90 80 IKA-Cathode Current-mA 70 60 50 40 30 20 10 0 0.001 0.01 0.1 1 C L-Load Capacitance-F 10
CL R2
150 I KA CL
A VKA=Vref B VKA=5V C VKA=10V D VKA=15V B
TA=25oC
+ -
VBATT
Stable
Stable A
C
Test Circuit for Curve A
D
R1=10K
I KA 150
+ -
VBATT
The areas under the curves represent conditions that may cause the device to oscillate. For curves B, C, and D, R2 and V+ were adjusted to establish the initial V KA and I KA conditions with C L =0.V BATT and CL were then adjusted to determine the ranges of stability.
Test Circuit for Curve B, C, and D
AP431/AP431A Rev. 5
9 of 14
MARCH 2007
www.diodes.com
(c) Diodes Incorporated
AP431/AP431A
ADJUSTABLE PRECISION SHUNT REGULATOR
Application Examples
V IN
VIN R CL R R1A R1B V IN I OUT
R2A
R2B
OFF
O N
+
LED on when Low Limit < VIN < High Limit Low Limit VREF (1+R1B/R2B) High Limit VREF (1+R1A/R2A)
Delay = RC x ln (
VIN ) V IN -VREF
I OUT = V REF / RCL
Fig. 4 Voltage Monitor
V IN I OUT
Fig. 5 Delay Timer
Fig. 6 Current Limiter or Current Source
V IN R 1
V OUT
V IN
PULSE R 1
V OUT
RS
R 2
R 2
I OUT = V REF / RS
V OUT = (1 + R1/R2) x VREF
LIMIT
(1 + R1/R2) x VREF
Fig. 7 Constant-Current Sink
Fig. 8 Higher-Current Shunt Regulator
Fig. 9 Crow Bar
VIN R1A R1B Output ON when Low Limit +
R2A
R2B
VBE
Low Limit High Limit
V REF (1 + R1B/R2B) +VBE V REF (1 + R1A/R2A)
Fig.10 Over-Voltage / Under-Voltage Protection Circuit
AP431/AP431A Rev. 5
10 of 14
MARCH 2007
www.diodes.com
(c) Diodes Incorporated
AP431/AP431A
ADJUSTABLE PRECISION SHUNT REGULATOR
Marking Information
(1) SOT23(R)/SOT25/SC59
(Top View) XX Y M X Y : Year M : Month (A~L) X : L : Lead Free G : Green
Marking Code
SOT23(R)/ SOT25/SC59
(2) SOP-8L
(Top view)
8 5
Logo Part Number
AP431 X YY WW X
1 4
Accuracy Blank: 2.4951% A: 2.495 0.5% L : Lead-Free Package G : Green WW : Nth week YY : Year
SOP-8L
(3) TO92-3L
(Top View) Accuracy Blank: 2.495 + 1% A: 2.495 + 0.5% AP431 X Y WW X X TO92-3L L : Lead Free Y : Year WW :Nth week X : Internal code
AP431/AP431A Rev. 5
11 of 14
MARCH 2007
www.diodes.com
(c) Diodes Incorporated
AP431/AP431A
ADJUSTABLE PRECISION SHUNT REGULATOR
Marking Code Table Device
AP431SA AP431ASA AP431SR AP431ASR AP431Q AP431AQ AP431W AP431AW AP431R AP431AR
Package (Note 10)
SOT23 SOT23 SOT23R SOT23R SOT25 SOT25 SC59 SC59 SC59 SC59
Marking Code
D1 D2 D5 D6 A2 A3 A6 A7 A8 A9
Date Code
YM YM YM YM YM YM YM YM YM YM
Note: 10. For Packaging Details, go to our website at http://www.diodes.com/datasheets/ap02007.pdf.
AP431/AP431A Rev. 5
12 of 14
MARCH 2007
www.diodes.com
(c) Diodes Incorporated
AP431/AP431A
ADJUSTABLE PRECISION SHUNT REGULATOR
Package Information
(1) SOT25
( All Dimensions in mm )
(2) SC59
0.35/0.50
1.50/1.70 Typ 1.60
TOP VIEW
2.70/3.00 Typ 2.80
1.50/ 1.70
TOP VIEW
2.70/ 3.00
2.90/3.10 Typ 3.00 1.00/1.30 Typ 1.10 0.013/0.10 Typ 0.05 0.10/0.20 Typ 0.15
1.90 2.90/3.10 1.00/ 1.30 0.013/0.10 0.10/0.20
Typ Typ 0.95 0.55
0.35/0.55 Typ 0.40
0.95
0.35/0.55 0/8
(3) SOT23(R)
(4) SOP-8L
0.37/0.51
8
5 5.90/6.10 Typ 6.00 4
1.20/1.40 2.30/2.50
1
TOP VIEW
0.45/0.60
0.89/ 1.03 1.80/2.00 2.80/3.00 0.903/ 1.10 0.085/0.180
9
0.30/0.50 Typ 0.40
(A ll s i de )
3.80/3.90 Typ 3.85 0.35
4
0.013/ 0.10
1.40/1.50 Typ 1.45
R
0/8
0.60/0.70 Typ 0.65 0.15/0.25 Typ 0.20
0.60/ 0 Typ .80 0. 70
45
3
0.45/0.61
1 0.
1.27
0.08/0.25 Typ 0.15 4.85/4.95 Typ 4.90
3.85/3.95 Typ 3.90
AP431/AP431A Rev. 5
13 of 14
MARCH 2007
www.diodes.com
(c) Diodes Incorporated
AP431/AP431A
ADJUSTABLE PRECISION SHUNT REGULATOR
Package Information
( Continued ) ( All Dimensions in mm )
(5) TO92-3L for Ammo pack
IMPORTANT NOTICE Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to any product herein. Diodes Incorporated does not assume any liability arising out of the application or use of any product described herein; neither does it convey any license under its patent rights, nor the rights of others. The user of products in such applications shall assume all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on our website, harmless against all damages. LIFE SUPPORT Diodes Incorporated products are not authorized for use as critical components in life support devices or systems without the expressed written approval of the President of Diodes Incorporated.
AP431/AP431A Rev. 5
14 of 14
MARCH 2007
www.diodes.com
(c) Diodes Incorporated

▲Up To Search▲

Price & Availability of AP431L-7

	To Download AP431L-7 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .