APL1431L Low Voltage Adjustable Precision Shunt Regulator Features 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 0.1Ω . 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 . 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 • • 0.1Ω Typical Output Impedance SOT-23-5 Packages Applications • • • AN O DE RE F 5 4 Linear Regulators Adjustable Power Supply Switching Power Supply Symbol 1 2 3 NC NC C A T H O DE Functional Diagram REF Anode C athode Cathode + 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 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 Lead Free Code Handling Code Temp. Range Package Code Elec. Grade APL1431L B : 1431L Absolute Maximum Ratings Symbol VKA IK IREF Rating Unit Cathode Voltage Parameter 20 V Continuous Cathode Current 100 mA 3 mA Reference Current Thermal Resistance from Junction to Ambient in Free Air SOT-23-5 Operating Junction Temperature Range 357 °C/W -40 to 150 °C TSTG Storage Temperature Range -65 to 150 °C TSOL Lead Temperature Range, Ts (Soldering, 10sec) 260 °C θJA TJ Electrical Characteristics Symbol Parameter TA= 25°C ( unless otherwise noted) Test Conditions VKA=VREF, IK=10mA TA= 25°C, (Fig. 1) APL1431LA APL1431LB APL1431LA APL1431LB VREF Reference Voltage VDEV VDEF Temp Deviation ∆VREF /∆VKA Ratio of Change in VREF to Change in Cathode IK=10mA, ∆VKA =16V to VREF (Fig. 2) Voltage Reference Input Current IK=10mA, R1=10kΩ, R2=∞ (Fig. 2) IREF Copyright ANPEC Electronics Corp. Rev. A.4 - May., 2003 TA= full range (see Note 1), (Fig. 1) TA= full range(see Note 1), VKA =VREF , IK =10mA, (Fig. 1) 2 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 Unit V 5 15 mV -0.2 -1.0 mV/V 0.15 0.5 µA www.anpec.com.tw APL1431L Electrical Characteristics Symbol IREF(DEV) IK(off) ZKA IK(MIN) Parameter TA= 25°C ( unless otherwise noted) Test Conditions APL1431L Min. Typ. Max. Unit 0.05 0.3 µA 0.01 0.01 0.1 0.5 µA 0.1 0.3 Ω 60 80 µA TA= full range(see Note 1), R1=10kΩ, R2=∞ , IK=10mA, (Fig. 2) VK=6V Off-state cathode current VREF=0V, (Fig. 3) VK=16V Dynamic Output VKA =VREF , IK=100µA to 100mA , Impedance f<1kHz , (Fig. 1 ) Minimum Operating VKA =VREF , (Fig. 1) Current IREF Temp Deviation Note : 1. Full temperature range is 0°C to 70°C for APL1431LXXC, and –40°C to 85°C for APL1431LXXI. Test Circuits V IN VO V IN IK V VO R1 I REF R2 V REF REF Figure 1. Test Circuit for VKA=VREF, VO=VKA=VREF IK Figure 2. Test Circuit for VKA>VREF, VO= VKA= VREF× (1+R1/R2) + IREF × R1 V IN VO IK(OFF) Figure 3. Test Circuit for IK(OFF) Copyright ANPEC Electronics Corp. Rev. A.4 - May., 2003 3 www.anpec.com.tw APL1431L Application Schematic RB V IN VO R1 0.1µF V REF APL431L R2 GND Precision Voltage Reference V IN VO RB R1 VREF APL431L 0.1µF R2 Precision Voltage Regulator Notes for Application Circuits: 1) 2) 3) • • To improve the stability of output voltage , a 0.1µF 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 (60µA) 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) Copyright ANPEC Electronics Corp. Rev. A.4 - May., 2003 4 www.anpec.com.tw APL1431L Typical Characteristics 150 300 TA=25°C TA=25°C 100 VKA=VREF Cathode Current (mA) Cathode Current (µA) 200 100 0 -100 -200 -300 VKA=VREF 50 0 -50 -100 -150 -1 -0.5 0 0.5 1 1.5 -1.5 -1 Cathode Voltage (V) IK=10mA Reference Input Current (nA) Reference Voltage (V) 0.5 1 1.5 150 1.244 1.242 1.24 1.238 1.236 1.234 -40 0 Cathode Voltage (V) 1.248 1.246 -0.5 -20 0 20 40 60 80 R1=10kΩ 125 R2=∞ 100 75 50 -40 100 Junction Temperature (°C) Copyright ANPEC Electronics Corp. Rev. A.4 - May., 2003 IK=10mA -20 0 20 40 60 80 100 Junction Temperature (°C) 5 www.anpec.com.tw APL1431L 250 1.2 1.1 IK=10mA 1 Off State Cathode Current (nA) Ratio of Delta Reference Voltage to Delta Cathode Voltage (-mV/V) Typical Characteristics (Cont.) ∆VKA=16V to VREF 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 VREF=0V VKA=16V 200 150 100 50 0 -40 -20 0 20 40 60 80 -40 100 Junction Temperature (°C) Copyright ANPEC Electronics Corp. Rev. A.4 - May., 2003 -20 0 20 40 60 80 100 Junction Temperature (°C) 6 www.anpec.com.tw APL1431L Packaging Information SOT-23-5 e1 5 4 E1 1 E 3 2 e b D A2 A a A1 Dim A A1 A2 b D E E1 e e1 L L1 L2 N α L 2 L M illimet ers M in. 0.95 0.05 0.90 0.30 2.8 2.6 1.5 Inches 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 0.55 0.014 0.7 0.020 0.20 BSC 0.5 Copyright ANPEC Electronics Corp. Rev. A.4 - May., 2003 0.022 0.008 BSC 5 0° M ax. 0.057 0.006 0.051 0.019 0.118 0.118 0.067 0.037BSC 0.074BSC 0.95BSC 1.90BSC 0.35 L 1 0.028 5 10° 7 0° 10° www.anpec.com.tw 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 (IR/Convection or VPR Reflow) tp TP C ritical Zone T L to T P T e m p e ra tu re R am p-up TL tL T sm ax 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 Average ramp-up rate 3°C/second max. (TL to TP) Preheat - Temperature Min (Tsmin) 100°C - Temperature Mix (Tsmax) 150°C - Time (min to max)(ts) 60-120 seconds Tsmax to TL - Ramp-up Rate Tsmax to TL - Temperature(TL) 183°C - Time (tL) 60-150 seconds Peak Temperature(Tp) 225 +0/-5°C 240 +0/-5°C Time within 5°C of actual Peak 10-30 seconds 10-30 seconds Temperature(tp) Ramp-down Rate 6°C/second max. 6 minutes max. Time 25°C to Peak Temperature Pb-Free Assembly Large Body Small Body 3°C/second max. 150°C 200°C 60-180 seconds 3°C/second max 217°C 60-150 seconds 245 +0/-5°C 250 +0/-5°C 10-30 seconds 20-40 seconds 6°C/second max. 8 minutes max. Note: All temperatures refer to topside of the package. Measured on the body surface. Copyright ANPEC Electronics Corp. Rev. A.4 - May., 2003 8 www.anpec.com.tw 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 245°C, 5 SEC 1000 Hrs Bias @125°C 168 Hrs, 100%RH, 121°C -65°C~150°C, 200 Cycles VHBM > 2KV, VMM > 200V 10ms, 1tr > 100mA Carrier Tape & Reel Dimensions t D P Po E P1 Bo F W Ko Ao D1 T2 J C A B T1 Application SOT-23-5 A B C J 178 ±1 72 ± 1.0 F D D1 Po 3.5 ± 0.05 1.5± 0.1 1.5± 0.1 4.0 ± 0.1 13.0 + 0.2 2.5 ± 0.15 T1 T2 W P E 8.4 ± 2 1.5 ± 0.3 8.0 ± 0.3 4 ± 0.1 1.75± 0.1 P1 Ao Bo Ko t 3.2± 0.1 1.4± 0.1 0.2±0.033 2.0 ± 0.1 3.15 ± 0.1 (mm) Copyright ANPEC Electronics Corp. Rev. A.4 - May., 2003 9 www.anpec.com.tw 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 10 www.anpec.com.tw