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APL1431
Adjustable Precision Shunt Regulator
Features
* * * * * * * *
Precise Reference Voltage to 2.500V Guaranteed 0.5% or 1% Reference Voltage Tolerance Sink Current Capability , 1mA to 100mA Quick Turn-on Adjustable Output Voltage , VO = VREF to 20V Low Operational Cathode Current , 250A Typical 0.1 Typical Output Impedance SOT-23 , SOT-89 and TO-92 Packages
General Description
The APL1431 is a 3-terminal adjustable voltage reference with specified thermal stability over applicable commercial temperature ranges. Output voltage may be set to any value between Vref (2.5 V) and 20 V with two external resistors (see Figure 2). When used with an photocoupler, the APL1431 is an ideal voltage reference in isolated feedback circuits for 2.5V to 12V switching-mode power supplies. This device has a typical output impedance of 0.1. Active output circuitry provides a very sharp turn-on characteristic, making the APL1431 excellent replacements for zener diodes in many applications, including on-board regulation and adjustable power supplies.
ANODE 3 1 2
Applications
* * *
Linear Regulators Adjustable Power Supply Switching Power Supply
CATHODE REF
SOT-23 (Top View)
Symbol
REF Anode Cathode
1
2
3
CATHODE
ANODE
REF
Functional Diagram
C athode
SOT-89 (Top View)
1 REF
2
ANOD E
REF
+ _
3 CATHO DE
Vref
TO-92 (Top View)
Anode
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise customers to obtain the latest version of relevant information to verify before placing orders. Copyright ANPEC Electronics Corp. Rev. A.3 - May., 2003 1 www.anpec.com.tw
APL1431
Ordering and Marking Information
APL1431
H a n d lin g C o d e Tem p. Range P ackage C ode E le c . G ra d e E le c . G ra d e A : 0 .5 % R e fe re n c e V o lta g e T o le ra n c e B : 1 % R e fe re n c e V o lta g e T o le ra n c e P ackage C ode A : S O T -2 3 D : S O T -8 9 E : T O -9 2 Y : C h ip F o rm Tem p. Range C : 0 to 7 0 C I : -4 0 to 8 5 C H a n d lin g C o d e P B : P la s tic B a g TB : Tape & B ox TR : Tape & R eel APL 1431 XXXXX
A P L1431 A :
1431
A P L1431 E :
X X X X X - D a te C o d e
A P L1431 D :
A P L1431 XXXXX
XXXXX
- D a te C o d e
Absolute Maximum Ratings
Symbol VKA IK IREF JA Parameter Cathode voltage Continuous cathode current range Reference current range Thermal Resistance from Junction to Ambient in Free Air SOT-23 SOT-89 TO-92 Ambient temperature range APL1431XXC APL1431XXI Junction temperature range APL1431XXC APL1431XXI Storage Temperature Range Lead temperature range, Ts (Soldering, 10sec) Rating 20 120 3 416 250 250 0 to 70 -40 to 85 0 to 150 -40 to 150 -65 to 150 260 Unit V mA mA C/W
TA Tj TSTG TSOL
C C C C
Electrical Characteristics
Symbol VREF VREF/T VREF / VKA Parameter
TA= 25C ( unless otherwise noted)
Test Conditions Unit V mV mV/V
APL1431 Min. Typ. Max. APL431A 2.487 2.500 2.513 VKA=VREF, Reference voltage IK=10mA*1 APL431B 2.475 2.500 2.525 VKA=VREF, IK=10mA Reference voltage TA= 0 to 70C*1 20 drift over temp. range 30 TA= -40 to 85C*1 *2 IK=10mA, VKA=VREF to 10V -1.5 -3 Voltage ratio (open loop gain) IK=10mA, VKA=VREF to 20V*2 -1.2 -2.5
2
Copyright ANPEC Electronics Corp. Rev. A.3 - May., 2003
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APL1431
Electrical Characteristics Cont.
Symbol IREF IREF/T IK(min) IK(off) |ZKA| IK Parameter Reference current Reference current drift Min. cathode current Off-state cathode current Dynamic impedance Cathode current
TA= 25C ( unless otherwise noted)
APL1431 Min. Typ. 1.0 0.3 0.25 0.1 0.1 Max. 3 1 0.5 1 0.4 100
Test Conditions IK=10mA, R1=10k, R2=open*2 IK=10mA, R1=10k, R2=open, TA= -40 to 85C*2 VKA=VREF*1 VKA= 20V, VREF= 0V*3 VKA=VREF IK=1mA to 100mA, f 1kHz*1 VKA=VREF+ 50mV*2
Unit A A mA A mA
Notes :
*1 : use Figure 1 *2 : use Figure 2 *3 : use Figure 3
Test figures
VIN IK VREF
Figure 1. Test Circuit for VKA=VREF , VO=VKA=VREF Figure 3. Test Circuit for IK(off)
Vo
VIN IK(off)
Vo
Application schematic
VIN IK R1 R2 IREF VREF
27.5k 0.1%
Vo
VIN
5-Volt Precision Regulator
Rb
Vo
27.5k 0.1%
Figure 2. Test Circuit for VKA>VREF, VO= VKA= VREFx (1+R1/R2) + IREF x R1
Rb should provide cathode current large than
1mA to maintain APL431 work properly.
Copyright ANPEC Electronics Corp. Rev. A.3 - May., 2003 3 www.anpec.com.tw
APL1431
Typical Characteristics
Reference Current vs.Temperature 125 800 Cathode Current vs. Cathode Voltage
600 Reference Current -A 100 Cathode Current -A
400 IK-MIN 200
75
0
50-40
-20
0
20
40
60
80
100
-200 -1
0
1
2
3
Temperature - C
Cathode Voltage (V)
Cathode Current vs. Cathode Voltage 100 2.52 2.515 Cathode Current -mA Reference Voltage -V 50 2.51 2.505 2.5 2.495 2.49 2.485 2.48 2.475 -100 -1 0 1 2 3
Reference Voltage vs. Temperature
0
-50
2.47 -40
-20
0
20
40
60
80
100
Cathode Voltage -V
Temperature ( C)
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APL1431
Typical Characteristics (Cont.)
Small-Signal Voltage Amplification vs Frequency 60 Small-Signal Voltage Amplification- dB 50
Input and Output Voltage - V 6 Input 5 4 output Pulse Response
40 30 20 10 0 1
3 2 1 0 3
10
100
1000
4
5
6
7
8
9
10 11 12 13
Frequency - kHz
Time - s
Off-State Cathode Current vsTemperature 0.5 Off-State Cathode Current - A VKA = 20V VREF = 0
Ratio of Delta Reference Voltage to Delta Cathode Voltage vs Temperature 0 -0.25 Ratio of Delta Reference Voltage to Delta Cathode Voltage - mV/V -0.5 -0.75 -1 -1.25 -1.5 -1.75 -2 -40 -20 0 20 40 60 80 100 120 VKA= VREF to 20V IK = 10mA
0.4
0.3
0.2
0.1
0 -40
-20
0
20
40
60
80
100
Temperature ( C)
Temperature ( C)
Copyright ANPEC Electronics Corp. Rev. A.3 - May., 2003
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APL1431
Typical Characteristics (Cont.)
Off-State Cathode Current vs Cathode Voltage 2500 Off-State Cathode Current (A) 2000 1500 1000 500 0 -500 -5 100m 1k VREF=0 Reference Impedance -
IK= 10mA 500m TA= 25C
Reference Impedance vs Frequency 1
300m 200m
0
5
10
15
20
25
30
2k
5k
10k
20k
50k 100k 200k
Cathode Voltage (V) Figure 9
Frequency
Figure 10
Stability Boundary Conditions
100 90
Cathode Current -mA
VkA=VREF
80 70 60 50 40 30 20 10 0 0.001 0.01 0.1 1 VkA=3.3V
TA= Stable 25C
Load Capacitance - F Figure 11
Copyright ANPEC Electronics Corp. Rev. A.3 - May., 2003
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APL1431
Packaging Information
SOT-23
D B
3 E 1 2 H
S e
A
A1
L
C
Dim A A1 B C D E e H L
M illim et er s M in. 1. 0 0 0. 0 0 0. 3 5 0. 1 0 2. 7 0 1. 4 0 1. 9 0 B SC 2. 4 0 0. 3 7 3. 0 0 0. 0 94 0. 0 01 5 M ax. 1. 3 0 0. 1 0 0. 5 1 0. 2 5 3. 1 0 1. 8 0 M in. 0. 0 39 0. 0 00 0. 0 14 0. 0 04 0. 1 06 0. 0 55
Inc he s M ax. 0. 0 51 0. 0 04 0. 0 20 0. 0 10 0. 1 22 0. 0 71 0. 0 75 B SC 0. 11 8
Copyright ANPEC Electronics Corp. Rev. A.3 - May., 2003
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APL1431
Packaging Information
SOT-89
D D1
a H 1 L B1 e e1 C B 2 3 E
A a
D im A B B1 C D D1 e e1 E H L
M illim eters M in. 1.40 0.40 0.35 0.35 4.40 1.35 1.50 B SC 3.00 B SC 2.29 3.75 0.80 2.60 4.25 1.20 10 0.090 0.148 0.031 M ax. 1.60 0.56 0.48 0.44 4.60 1.83 M in. 0.055 0.016 0.014 0.014 0.173 0.053
Inches M ax. 0.063 0.022 0.019 0.017 0.181 0.072 0.059 BSC 0.118 B SC 0.102 0.167 0.047 10
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APL1431
Packaging Information
TO-92
3 J e e1 2 1 L1 Q A L SEATING PLANE E S D
b2
b S
Dim A b b2 D E e e1 J L L1 Q S
Millimeters Min. Max. 4.318 5.334 0.406 0.406 4.445 3.175 2.413 1.143 3.429 12.70 1.27 2.921 2.032 2.667 0.559 0.559 5.207 4.191 2.667 1.397
Inches Min. 0.170 0.016 0.016 0.175 0.125 0.095 0.045 0.135 0.500 0.050 0 . 11 5 0.080 0.105 Max. 0.210 0.022 0.022 0.205 0.165 0.105 0.055
Copyright ANPEC Electronics Corp. Rev. A.3 - May., 2003
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APL1431
Physical Specifications
Terminal Material Lead Solderability Solder-Plated Copper (Solder Material : 90/10 or 63/37 SnPb) Meets EIA Specification RSI86-91, ANSI/J-STD-002 Category 3.
Reflow Condition
(IR/Convection or VPR Reflow)
Reference JEDEC Standard J-STD-020A APRIL 1999
temperature
Peak temperature
183C Pre-heat temperature
Time
Classification Reflow Profiles
Convection or IR/ Convection Average ramp-up rate(183C to Peak) 3C/second max. 120 seconds max Preheat temperature 125 25C) 60 - 150 seconds Temperature maintained above 183C Time within 5C of actual peak temperature 10 -20 seconds Peak temperature range 220 +5/-0C or 235 +5/-0C Ramp-down rate 6 C /second max. 6 minutes max. Time 25C to peak temperature VPR 10 C /second max. 60 seconds 215-219C or 235 +5/-0C 10 C /second max.
Package Reflow Conditions
pkg. thickness 2.5mm and all bgas Convection 220 +5/-0 C VPR 215-219 C IR/Convection 220 +5/-0 C pkg. thickness < 2.5mm and pkg. volume 350 mm pkg. thickness < 2.5mm and pkg. volume < 350mm Convection 235 +5/-0 C VPR 235 +5/-0 C IR/Convection 235 +5/-0 C
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APL1431
R e lia b ilit y te s t p r o g r a m
Te s t ite m S O L D E R A B IL IT Y H O LT PCT TST ESD L a tc h -U p M e th o d M IL -S T D -8 8 3 D -2 0 0 3 M IL -S T D -8 8 3 D -1 0 0 5 .7 J E S D -2 2 - B , A 1 0 2 M IL -S T D -8 8 3 D -1 0 11 .9 M IL -S T D -8 8 3 D -3 0 1 5 .7 JESD 78 D e s c rip tio n 2 45 C , 5 S E C 1 0 0 0 H rs B ia s @ 1 2 5 C 1 6 8 H rs , 1 0 0 % R H , 1 2 1 C -6 5 C ~ 1 5 0 C , 2 0 0 C y c le s V H B M > 2 K V, V M M > 2 0 0 V 1 0 m s , I tr > 1 0 0 m A
Carrier Tape & Reel Dimensions
t P P1 D
Po E
F W
Bo
Ao
Ko D1
T2
J C A B
T1
Application
A 1781
B 60 1.0 D 1.5 +0.1 B 70 2 D 1.5 0.1
C 12.0 D1 F0.1MIN C
J
T1
T2 1.4 Ao 3.1 T2 1.3 0.3 Ao 4.8 0.1
2.5 0.15 9.0 0.5 Po 4.0 J P1 2.0 0.05 T1 14 2 P1 2.0 0.1
W 8.0+ 0.3 - 0.3 Bo 3.0 W 12 + 0.3 12 - 0.1 Bo 4.5 0.1
P 4.0 Ko 1.3 P 8 0.1 Ko
E 1.75 t 0.20.03 E 1.75 0.1 t
SOT-23
F 3.5 0.05
Application
A 178 1
13.5 0.15 3 0.15 D1 1.5 0.1 Po 4.0 0.1
SOT-89
F 5.5 0.05
1.80 0.1 0.30.013 (mm)
Copyright ANPEC Electronics Corp. Rev. A.3 - May., 2003
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APL1431
Carrier Tape & Reel Dimensions
H2
H2
H2A H2 A
D2
W2 L L1
H3 H4 H W1 H1 W
D T2 T T1 F1F2 P1 P P2 D1
Application
A 3.18~12 H3
D 4.00.2 H4
D1
D2
0.36~0.53 9.0 MAX L L1 2.5 MIN W2 0.5 MAX
F1,F2 2.5+0.2 -0.1 P 12.70.2
H 160.5 P1 6.350.4
H1 90.5 P2
H2 0.5 MAX T
H2A 0.5 MAX T1
TO-92
27.0 MAX 20.0 MAX 11.0 MAX T2 W W1 5.0~7.0
50.80.5 0.55 MAX 1.42 MAX
0.36~0.68 17.5~19
(mm)
Cover Tape Dimensions
Application SOT- 23 SOT- 89 TO-92 Carrier Width 8 12 17.5~19 Cover Tape Width 5.3 9.3 5.0~7.0 Devices Per Reel 3000 1000 2000
Copyright ANPEC Electronics Corp. Rev. A.3 - May., 2003
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