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APL1431a3

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APL1431

Adjustable Precision Shunt RegulatorFeatures

• Precise Reference Voltage to 2.500V

• Guaranteed 0.5% or 1% Reference Voltage

Tolerance

General Description

The APL1431 is a 3-terminal adjustable voltage ref-erence with specified thermal stability over applicablecommercial temperature ranges. Output voltage maybe set to any value between Vref (2.5 V) and 20 V withtwo external resistors (see Figure 2). When usedwith an photocoupler, the APL1431 is an ideal volt-age reference in isolated feedback circuits for 2.5Vto 12V switching-mode power supplies. This devicehas a typical output impedance of 0.1Ω. Active out-put circuitry provides a very sharp turn-oncharacteristic, making the APL1431 excellent replace-ments for zener diodes in many applications, includ-ing on-board regulation and adjustable powersupplies.

ANODE3

• Sink Current Capability , 1mA to 100mA• Quick Turn-on

• Adjustable Output Voltage , VO = VREF to 20V• Low Operational Cathode Current , 250µA

Typical

• 0.1Ω Typical Output Impedance

• SOT-23 , SOT-89 and TO-92 Packages

Applications

• Linear Regulators

• Adjustable Power Supply• Switching Power Supply

12CATHODEREF

SOT-23 (Top View)

Symbol

REFAnodeCathode123

CATHODEANODEREF

Functional Diagram

CathodeSOT-89 (Top View)

REF

2ANODE

REF+_3

CATHODE

VrefTO-92 (Top View)

AnodeANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advisecustomers to obtain the latest version of relevant information to verify before placing orders.Copyright  ANPEC Electronics Corp.Rev. A.3 - May., 2003

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APL1431

Ordering and Marking Information

APL1431Lead Free CodeHandling CodeTemp. RangePackage CodeElec. GradeElec. Grade A : 0.5% Reference Voltage Tolerance B : 1% Reference Voltage TolerancePackage Code A : SOT-23 D : SOT-89 E : TO-92 Y : Chip FormTemp. Range°° C : 0 to 70 CI : -40 to 85 CHandling Code PB : Plastic Bag TB : Tape & Box TR : Tape & ReelLead Free Code L : Lead Free Device Blank : Original Device APL1431APL1431 E :XXXXX - Date CodeXXXXXAPL1431 A :1431APL1431 D :APL1431XXXXXXXXXX- Date CodeAbsolute Maximum Ratings

SymbolVKAIKIREFθJAParameterCathode voltageContinuous cathode current rangeReference current rangeThermal Resistance from Junction to Ambient in Free Air SOT-23 SOT-89 TO-92Ambient temperature range APL1431XXC APL1431XXIJunction temperature range APL1431XXC APL1431XXIStorage Temperature RangeLead temperature range, Ts (Soldering, 10sec)Rating2012034162502500 to 70-40 to 850 to 150-40 to 150-65 to 150260UnitVmAmA°C/WTATjTSTGTSOL°C°C°C°CElectrical Characteristics TA= 25°C ( unless otherwise noted)

SymbolVREF∆VREF/T∆VREF / ∆VKAAPL1431Min.Typ.Max.APL431A2.4872.5002.513VKA=VREF,Reference voltageIK=10mA*1APL431B2.4752.5002.525VKA=VREF, IK=10mAReference voltageT= 0 to 70°C*120drift over temp. rangeA30TA= -40 to 85°C*1IK=10mA, VKA=VREF to 10V*2-1.5-3Voltage ratio (open*2loop gain)IK=10mA, VKA=VREF to 20V-1.2-2.5ParameterTest Conditions2

UnitVmVmV/VCopyright  ANPEC Electronics Corp.

Rev. A.3 - May., 2003

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APL1431

Electrical Characteristics Cont. TA= 25°C ( unless otherwise noted)

SymbolIREF∆IREF/TIK(min)IK(off)|ZKA|IKParameterReference currentReference currentdriftMin. cathode currentOff-state cathodecurrentDynamic impedanceCathode currentTest ConditionsIK=10mA,R1=10kΩ, R2=open*2IK=10mA, R1=10kΩ,R2=open, TA= -40 to 85°C*2VKA=VREF*1VKA= 20V, VREF= 0V*3VKA=VREFIK=1mA to 100mA, f ≤1kHz*1VKA=VREF+ 50mV*2APL1431Min.Typ.1.00.30.250.10.1Max.310.510.4100UnitµAµAmAµAΩmANotes :

*1 : use Figure 1*2 : use Figure 2*3 : use Figure 3

Test figures

VINIKVREFFigure 1. Test Circuit for VKA=VREF , VO=VKA=VREF

Figure 3. Test Circuit for IK(off)

VoVINIK(off)VoApplication schematic

VINIKR1R2IREFVREF27.5kΩ0.1%VoVIN5-Volt Precision Regulator

RbVo27.5kΩ0.1%Figure 2. Test Circuit for VKA>VREF, VO= VKA= VREF× (1+R1/R2) + IREF × R1

∗ Rb should provide cathode current large than

1mA to maintain APL431 work properly.

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APL1431

Typical Characteristics

Reference Current vs.Temperature125800Cathode Current vs. Cathode Voltage600Reference Current -µA100Cathode Current -µA400IK-MIN20075050-40-20020406080100-200-10123°Temperature - CCathode Voltage (V)Cathode Current vs. Cathode Voltage1002.522.515Cathode Current -mAReference Voltage -V502.512.5052.52.4952.492.4852.482.475-100-10123Reference Voltage vs. Temperature0-502.47-40-20020406080100Cathode Voltage -V°Temperature ( C)Copyright  ANPEC Electronics Corp.

Rev. A.3 - May., 2003

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APL1431

Typical Characteristics (Cont.)

Small-Signal Voltage Amplification vs Frequency60 Small-Signal Voltage Amplification- dB50 Input and Output Voltage - V6Input54outputPulse Response40302010013210310100100045678910111213 Frequency - kHzTime - µsOff-State Cathode Current vsTemperature0.5 Off-State Cathode Current - µAVKA = 20VVREF = 0 Ratio of Delta Reference Voltage to Delta Cathode Voltage vs Temperature0-0.25Ratio of Delta Reference Voltage to Delta Cathode Voltage - mV/V-0.5-0.75-1-1.25-1.5-1.75-2-40-20020406080100120VKA= VREF to 20VIK = 10mA0.40.30.20.10-40-20020406080100°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 Voltage2500Off-State Cathode Current (µA)2000150010005000-500-5100m1kVREF=0 Reference Impedance - ΩIK= 10mA500mTA= 25°C Reference Impedance vs Frequency1300m200m0510152025302k5k10k20k50k100k200kCathode Voltage (V)Figure 9

FrequencyFigure 10Stability Boundary Conditions

10090 Cathode Current -mAVkA=VREF807060504030201000.0010.010.11VkA=3.3VTA= 25°CStable Load Capacitance - µF

Figure 11

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APL1431

Packaging Information

SOT-23

DB3E12HSeAA1LCDimAA1BCDEeHLMillimetersMin.1.000.000.350.102.701.401.90 BSC2.400.373.000.0940.0015Max.1.300.100.510.253.101.80Min.0.0390.0000.0140.0040.1060.055InchesMax.0.0510.0040.0200.0100.1220.0710.075 BSC0.118Copyright  ANPEC Electronics Corp.Rev. A.3 - May., 2003

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APL1431

Packaging Information

SOT-89

DD1aHE123LB1ee1CBAaDimABB1CDD1ee1EHLαMillimetersMin.1.400.400.350.354.401.351.50 BSC3.00 BSC2.293.750.802.604.251.2010°0.0900.1480.031Max.1.600.560.480.444.601.83Min.0.0550.0160.0140.0140.1730.053InchesMax.0.0630.0220.0190.0170.1810.0720.059 BSC0.118 BSC0.1020.1670.04710°Copyright  ANPEC Electronics Corp.Rev. A.3 - May., 2003

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APL1431

Packaging Information

TO-92

3Jee121L1QESDb2bSALSEATING PLANEDimAφ bφ b2φ DEee1JLL1QSMillimetersMin.Max.4.3185.3340.4060.4064.4453.1752.4131.1433.42912.701.272.9212.0322.6670.5590.5595.2074.1912.6671.397InchesMin.0.1700.0160.0160.1750.1250.0950.0450.1350.5000.0500.1150.0800.105Max.0.2100.0220.0220.2050.1650.1050.055Copyright  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), 100%Sn Meets EIA Specification RSI86-91, ANSI/J-STD-002 Category 3. Reflow Condition (IR/Convection or VPR Reflow)

Ramp-uptpCritical ZoneTL to TP TemperatureTL

TsmaxtLTsminRamp-downtsPreheat25

° t 25 C to PeakTime

Classificatin Reflow Profiles

Profile Feature Sn-Pb Eutectic Assembly Large Body Small Body Pb-Free Assembly Large Body Small Body Average ramp-up rate 3°C/second max. 3°C/second max. (TL to TP) Preheat - Temperature Min (Tsmin) 100°C 150°C - Temperature Mix (Tsmax) 150°C 200°C - Time (min to max)(ts) 60-120 seconds 60-180 seconds Tsmax to TL 3°C/second max - Ramp-up Rate Tsmax to TL - Temperature(TL) 183°C 217°C - Time (tL) 60-150 seconds 60-150 seconds Peak Temperature(Tp) 225 +0/-5°C 240 +0/-5°C 245 +0/-5°C 250 +0/-5°C Time within 5°C of actual Peak 10-30 seconds 10-30 seconds 10-30 seconds 20-40 seconds Temperature(tp) Ramp-down Rate 6°C/second max. 6°C/second max. 6 minutes max. 8 minutes max. Time 25°C to Peak Temperature Note: All temperatures refer to topside of the package. Measured on the body surface. Copyright  ANPEC Electronics Corp.

Rev. A.3 - May., 2003

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APL1431

Reliability Test Program

Test item Method Description SOLDERABILITY MIL-STD-883D-2003 245°C, 5 SEC HOLT MIL-STD-883D-1005.7 1000 Hrs Bias @125°C PCT JESD-22-B,A102 168 Hrs, 100%RH, 121°C TST MIL-STD-883D-1011.9 -65°C~150°C, 200 Cycles ESD MIL-STD-883D-3015.7 VHBM > 2KV, VMM > 200V Latch-Up JESD 78 10ms, 1tr > 100mA Carrier Tape & Reel Dimensions

tPP1DPoEFWBoAoKoD1T2JCABT1ApplicationA178±1B60 ± 1.0D1.5 +0.1B70 ± 2D1.5± 0.1C12.0D10.1MIN£pCJT1T21.4Ao3.1T21.3 ± 0.3Ao4.8 ± 0.12.5 ± 0.159.0 ± 0.5Po4.0JP12.0 ± 0.05T114 ± 2P12.0 ± 0.1W8.0+ 0.3- 0.3Bo3.0W12 + 0.312 - 0.1Bo4.5± 0.1P4.0Ko1.3P8 ± 0.1KoE1.75t0.2±0.03E1.75± 0.1tSOT-23F3.5 ± 0.05ApplicationA178 ±113.5 ± 0.153 ± 0.15D11.5± 0.1Po4.0 ± 0.1SOT-89F5.5 ± 0.051.80± 0.10.3±0.013 (mm)

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APL1431

Carrier Tape & Reel Dimensions

H2H2H2AH2D2AW2LL1H3H4HW1WH1DT2TT1F1F2P1PP2D1ApplicationA3.18~12H3D4.0±0.2H4D1D20.36~0.539.0 MAXLL12.5 MINW20.5 MAXF1,F22.5+0.2 -0.1P12.7±0.2H16±0.5P16.35±0.4H19±0.5P2H20.5 MAXTH2A0.5 MAXT1TO-9227.0 MAX20.0 MAX11.0 MAXT2WW15.0~7.050.8±0.50.55 MAX1.42 MAX0.36~0.6817.5~19 (mm)

Cover Tape Dimensions

ApplicationSOT- 23SOT- 89TO-92Carrier Width81217.5~19Cover Tape Width5.39.35.0~7.0Devices Per Reel300010002000Customer Service

Anpec Electronics Corp.Head Office :

5F, No. 2 Li-Hsin Road, SBIP,Hsin-Chu, Taiwan, R.O.C.Tel : 886-3-5642000Fax : 886-3-5642050

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