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APL1431L
Low Voltage Adjustable Precision Shunt Regulator
Features * * * * * * * *
Precise Reference Voltage to 1.24V Guaranteed 0.5% or 1% Reference Voltage Tolerance Sink Current Capability , 60mA to 100mA Quick Turn-on Adjustable Output Voltage , VO = VREF to 20V Low Operational Cathode Current , 60mA Typical 0.1 Typical Output Impedance SOT-23-5 Packages
General Description
The APL1431L is a 3-terminal low voltage adjustable precision reference with specified thermal stability over applicable commercial temperature ranges . Output voltage may be set to any value between VREF (1.24 V) and 20 V with two external resistors (see Figure 2) . When used with an photocoupler , the APL1431L is an ideal voltage reference in isolated feedback circuits for 1.24V to 12V switchingmode power supplies . This device has a typical output impedance of 0.1 . Active output circuitry provides a very sharp turn-on characteristic , making the APL1431L excellent replacements for zener diodes in many applications , including on-board regulation and adjustable power supplies .
AN O DE RE F
Applications * * *
Linear Regulators Adjustable Power Supply Switching Power Supply
5 1 2
4 3
NC
NC
C A T H O DE
Symbol
REF Anode Cathode
Functional Diagram
C athode
R EF
+ -
V REF
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.4 - May., 2003 1 www.anpec.com.tw
APL1431L
Ordering and Marking Information
APL1431L
Lead Free Code Handling Code Temp. Range Package Code Elec. Grade Elec. Grade A : 0.5% Reference Voltage Tolerance B : 1% Reference Voltage Tolerance Package Code B : SOT- 23 - 5 Temp. Range C : 0 to 70 C I : -40 to 85 C Handling Code PB : Plastic Bag TB : Tape & Box TR : Tape & Reel Lead Free Code L : Lead Free Device Blank : Original Device
APL1431L B :
1431L
Absolute Maximum Ratings
Symbol VKA IK IREF JA TJ TSTG TSOL Cathode Voltage Continuous Cathode Current Reference Current Thermal Resistance from Junction to Ambient in Free Air SOT-23-5 Operating Junction Temperature Range Storage Temperature Range Lead Temperature Range, Ts (Soldering, 10sec) Parameter Rating 20 100 3 357 -40 to 150 -65 to 150 260 Unit V mA mA C/W C C C
Electrical Characteristics
Symbol Parameter
TA= 25C ( unless otherwise noted)
APL1431L Min. Typ. Max. 1.234 1.240 1.246 1.228 1.240 1.252 1.222 1.240 1.258 1.215 1.240 1.265 5 15
Test Conditions VKA=VREF, IK=10mA TA= 25C, (Fig. 1) TA= full range (see Note 1), (Fig. 1) APL1431LA APL1431LB APL1431LA APL1431LB
Unit
VREF
Reference Voltage
V
VDEV VREF /VKA IREF
VDEF Temp Deviation
TA= full range(see Note 1), VKA =VREF , IK =10mA, (Fig. 1)
mV
Ratio of Change in VREF to Change in Cathode IK=10mA, VKA =16V to VREF (Fig. 2) Voltage Reference Input Current IK=10mA, R1=10k, R2= (Fig. 2)
-0.2 0.15
-1.0 0.5
mV/V A
Copyright ANPEC Electronics Corp. Rev. A.4 - May., 2003
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APL1431L
Electrical Characteristics
Symbol IREF(DEV) IK(off) ZKA IK(MIN) Parameter IREF Temp Deviation
TA= 25C ( unless otherwise noted)
APL1431L Min. Typ. Max. 0.05 0.01 0.01 0.1 60 0.3 0.1 0.5 0.3 80
Test Conditions
Unit A A A
TA= full range(see Note 1), R1=10k, R2= , IK=10mA, (Fig. 2) VK=6V Off-state cathode current VREF=0V, (Fig. 3) VK=16V Dynamic Output VKA =VREF , IK=100A to 100mA , Impedance f<1kHz , (Fig. 1 ) Minimum Operating VKA =VREF , (Fig. 1) Current
Note : 1. Full temperature range is 0C to 70C for APL1431LXXC, and -40C to 85C for APL1431LXXI.
Test Circuits
V IN IK VO V IN R1 I REF IK VO
V
R2
REF
V REF
Figure 1. Test Circuit for VKA=VREF, VO=VKA=VREF
Figure 2. Test Circuit for VKA>VREF, VO= VKA= VREFx (1+R1/R2) + IREF x R1
VIN IK(OFF)
VO
Figure 3. Test Circuit for IK(OFF)
Copyright ANPEC Electronics Corp. Rev. A.4 - May., 2003
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APL1431L
Application Schematic
RB V IN VO R1
V REF APL431L R2
0.1F
GND
Precision Voltage Reference
V IN RB VO
R1
VREF APL431L 0.1F R2
Precision Voltage Regulator Notes for Application Circuits: 1) 2) To improve the stability of output voltage , a 0.1F capacitor between cathode and anode of APL431L is strongly recommended. Set VO according to the following equation: VO= VREF (1+R1/ R2)+ IREF R1 Choose the value for RB as follows: The maximum limit for RB should be such that the cathode current( IK) is greater than the minimum operating current (60A) at VIN (MIN) . The minimum limit for RB should be such that the cathode current (IK) does not exceed 100mA under all load conditions, and the instantaneous turn-on value for IK does not exceed 150mA . Both of the following conditions must be met : RB,MIN VIN(MAX) / 150mA ( to limit instantaneous turn-on IK) RB,MIN VIN(MAX) - VO / IO (MIN) + 100mA (to limit IK under normal operating conditions)
* *
3)
Copyright ANPEC Electronics Corp. Rev. A.4 - May., 2003
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APL1431L
Typical Characteristics
300
150
TA=25C
200
TA=25C
100
100
Cathode Current (mA)
Cathode Current (A)
VKA=VREF
VKA=VREF
50
0
0
-100
-50
-200
-100
-300 -1 -0.5 0 0.5 1 1.5
-150 -1.5 -1 -0.5 0 0.5 1 1.5
Cathode Voltage (V)
Cathode Voltage (V)
1.248 1.246
150
Reference Input Current (nA)
IK=10mA
IK=10mA R1=10k
125
Reference Voltage (V)
1.244 1.242 1.24 1.238 1.236 1.234 -40
R2=
100
75
-20
0
20
40
60
80
100
50 -40
-20
0
20
40
60
80
100
Junction Temperature (C)
Junction Temperature (C)
Copyright ANPEC Electronics Corp. Rev. A.4 - May., 2003
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APL1431L
Typical Characteristics (Cont.)
Ratio of Delta Reference Voltage to Delta Cathode Voltage (-mV/V)
1.2
250
1 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 -40
VKA=16V to VREF
Off State Cathode Current (nA)
1.1
IK=10mA
VREF=0V
200
VKA=16V
150
100
50
0 -20 0 20 40 60 80 100 -40 -20 0 20 40 60 80 100
Junction Temperature (C)
Junction Temperature (C)
Copyright ANPEC Electronics Corp. Rev. A.4 - May., 2003
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APL1431L
Packaging Information
SOT-23-5
e1
5
4 E1 E
1
2
3
e
b
D
A2
A
a
L1
A1
L2
L
Dim A A1 A2 b D E E1 e e1 L L1 L2 N
M illimet ers M in. 0.95 0.05 0.90 0.30 2.8 2.6 1.5 0.95BSC 1.90BSC 0.35 0.20 BSC 0.5 5 0 10 0 0.7 0.020 0.55 0.014 M ax. 1.45 0.15 1.30 0.50 3.00 3.00 1.70 M in. 0.037 0.002 0.035 0.011 0.110 0.102 0.059
Inches M ax. 0.057 0.006 0.051 0.019 0.118 0.118 0.067 0.037BSC 0.074BSC 0.022 0.008 BSC 0.028 5 10
Copyright ANPEC Electronics Corp. Rev. A.4 - May., 2003
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APL1431L
Physical Specifications
Terminal Material Lead Solderability Solder-Plated Copper (Solder Material : 90/10 or 63/37 SnPb), 100%Sn Meets EIA Specification RSI86-91, ANSI/J-STD-002 Category 3.
Reflow Condition
TP
(IR/Convection or VPR Reflow)
tp C ritical Zone T L to T P
R am p-up
T e m p e ra tu re
TL T sm ax
tL
T sm in R am p-down ts Preheat
25
t 25 C to Peak
T im e
Classificatin Reflow Profiles
Profile Feature Sn-Pb Eutectic Assembly Large Body Small Body Pb-Free Assembly Large Body Small Body 3C/second max. 150C 200C 60-180 seconds 3C/second max 217C 60-150 seconds 245 +0/-5C 250 +0/-5C 10-30 seconds 20-40 seconds
Average ramp-up rate 3C/second max. (TL to TP) Preheat - Temperature Min (Tsmin) 100C - Temperature Mix (Tsmax) 150C - Time (min to max)(ts) 60-120 seconds Tsmax to TL - Ramp-up Rate Tsmax to TL - Temperature(TL) 183C - Time (tL) 60-150 seconds Peak Temperature(Tp) 225 +0/-5C 240 +0/-5C Time within 5C of actual Peak 10-30 seconds 10-30 seconds Temperature(tp) Ramp-down Rate 6C/second max. 6 minutes max. Time 25C to Peak Temperature
Copyright ANPEC Electronics Corp. Rev. A.4 - May., 2003 8
6C/second max. 8 minutes max.
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Note: All temperatures refer to topside of the package. Measured on the body surface.
APL1431L
Reliability Test Program
Test item SOLDERABILITY HOLT PCT TST ESD Latch-Up Method MIL-STD-883D-2003 MIL-STD-883D-1005.7 JESD-22-B,A102 MIL-STD-883D-1011.9 MIL-STD-883D-3015.7 JESD 78 Description 245C, 5 SEC 1000 Hrs Bias @125C 168 Hrs, 100%RH, 121C -65C~150C, 200 Cycles VHBM > 2KV, VMM > 200V 10ms, 1tr > 100mA
Carrier Tape & Reel Dimensions
t P P1 D
Po E
F W
Bo
Ao
Ko D1
T2
J C A B
T1
Application
A 178 1
B 72 1.0 D 1.5 0.1
C
J
T1 8.4 2 P1
T2 1.5 0.3 Ao
W 8.0 0.3 Bo 3.2 0.1
P 4 0.1 Ko 1.4 0.1
E 1.75 0.1 t 0.20.033 (mm)
13.0 + 0.2 2.5 0.15 D1 1.5 0.1 Po 4.0 0.1
SOT-23-5
F 3.5 0.05
2.0 0.1 3.15 0.1
Copyright ANPEC Electronics Corp. Rev. A.4 - May., 2003
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APL1431L
Cover Tape Dimensions
Application SOT- 23-5 Carrier Width 8 Cover Tape Width 5.3 Devices Per Reel 3000
Customer Service
Anpec Electronics Corp. Head Office : 5F, No. 2 Li-Hsin Road, SBIP, Hsin-Chu, Taiwan, R.O.C. Tel : 886-3-5642000 Fax : 886-3-5642050 Taipei Branch : 7F, No. 137, Lane 235, Pac Chiao Rd., Hsin Tien City, Taipei Hsien, Taiwan, R. O. C. Tel : 886-2-89191368 Fax : 886-2-89191369
Copyright ANPEC Electronics Corp. Rev. A.4 - May., 2003
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