SE431D

Description The SE431D is a low voltage three terminal adjustable shunt regulator with a guaranteed thermal stability over applicable temperature ranges. The output voltage can be set to any value between VREF (approximately 2.5 V) to 18V with two external resistors. This device has a typical output impedance of 0.08Ω. Active output circuitry provides a very sharp turn on characteristic, making this device excellent replacement for Zener diodes in many applications. The SE431D is characterized for operation from -40oC to 85oC, and five package options (SOT-23-3, SOT-23-5, SOP-8, TO-92 and SOT-89) allow the designer the opportunity to select the proper package for their applications. Features Low voltage operation (2.5V) Adjustable output voltage V0 = VREF to 18V Wide operating current range 150μA to 80mA Low dynamic output impedance 0.08Ω (Typ.). Trimmed bandgap design up to + 0.5%. ESD rating is 6KV(Per MIL-STD-883D). RoHS Compliant and 100% Lead (Pb)-Free. Application Linear Regulators Adjustable Supplies Switching Power Supplies Battery Operated Computers Instrumentation Computer Disk Drives Block Diagram Cathode Symbol Diagram Cathode Ref + Ref Vref Anode Anode Revision 12/4/2008 All contents are subject to change without prior notice. © Seaward Electronics, Inc., 2006. • www.seawardinc.com.cn • Page 1 Marking Information Package SOT-23-3 SC59-3L SOT-23-3 SOT-23-5L SOP-8 Marking 431x 431Sx (SE431DS) 431x SE431 XXXX-LF SE431 XXXX-LF SE431 XXXX-LF XXXX is the batch number. Lead-free package is Production Batch Number Lead-Free Package The last character is the batch number. Lead-free package is indicated by a dot on top of the last character. SOT-89 indicated by LF after XXXX. TO-92 Pin Configuration SOT-23-3 SOT-23-3L (SC59-3L) SOT-23-3 (Order as SE431DS) SOT-23-5L TO-92 SOP-8 (Top View) SOT-89 Revision 12/4/2008 All contents are subject to change without prior notice. © Seaward Electronics, Inc., 2006. • www.seawardinc.com.cn • Page 2 Absolute Maximum Ratings Parameter Cathode Voltage Continuous Cathode Current Reference Current Operating Junction Temperature Range Storage Temperature Range Symbol VKA I KA I REF TJ TSTG Maximum 18 80 1 -40 to 85 -65 to 150 120 (SOT-89) 230 (SOT-23-3) Units V mA mA °C °C Thermal Resistance θ JA 230 (SOT-23-5L) 150 (SOP-8) 220 (TO-92) °C/W Lead Temperature (Soldering) 10 seconds TLEAD 260 °C Electrical Characteristics TA=25℃, unless otherwise specified. TEST PARAMETER 0.5% Reference Voltage 1% 2% Deviation of reference voltage over full temperature range Ratio of change in reference voltage to the change in cathode voltage SYMBOL CIRCUIT TEST CONDITIONS MIN TYP MAX UNIT 2483 VREF 1 VKA = VREF, IKA = 10mA 2495 2495 2495 -14 2507 2520 2545 -mV mV 2470 2445 VI(dev) 1 VKA = VREF, IKA = 10mA TA = -40°C to 85°C IKA = 3mA, ΔVKA = 10 V - VREF IKA = 10mA, R1=10kΩ, R2 = ∞ IKA = 10mA, R1=10kΩ, R2 = ∞, TA = -40°C to 85°C VKA = VREF VKA = 18V, VREF = 0 IKA = 1mA to 80mA, -- ΔVREF ΔVKA IREF 2 -- 0.2 2.7 mV/V Reference current Deviation of Reference current over full temperature range Minimum cathode current for regulation 2 -- 0.3 4 μA μA mA μA Ω II(dev) IMIN IOFF ZKA 2 1 3 1 ----- -0.13 0.15 0.4 0.08 -0.3 1 0.7 Off-state cathode current Dynamic impedance VKA = VREF, f ≤ 1kHZ Revision 12/4/2008 All contents are subject to change without prior notice. © Seaward Electronics, Inc., 2006. • www.seawardinc.com.cn • Page 3 Typical Performance Characteristics CATHODE CURRENT Vs. CATHODE VOLTAGE 1200 Cathode Current VS. Cathode Voltage VKA=Vref TA=25 ℃ Cathode Current (uA) 75 50 VKA = Vref TA = 25oC 1000 800 600 400 200 0 Cathode Current (mA) 25 0 -25 -50 -75 - 100 -2 -1 0 1 2 3 -200 -1 Cathode Voltage (V) Cathode Voltage (V) 0 1 2 3 Reference Voltage VS Junction Temperature 2.6 2.58 2.56 2.54 2.52 2.5 2.48 2.46 2.44 2.42 2.4 -50 -25 0 25 50 75 100 Reference Voltage (V) Junction Temperature (℃) Revision 12/4/2008 All contents are subject to change without prior notice. © Seaward Electronics, Inc., 2006. • www.seawardinc.com.cn • Page 4 Test Circuits Input V KA Input I KA VKA Input VKA I off I KA R1 Iref Vref R2 Vref R1 VKA = Vref (1+ ) + Iref x R1 R2 Test Circuit 1: VKA = VREF Test Circuit 2: VKA > VREF Test Circuit 3: Off State Current Application Diagram Thermal Consideration Package Power Rating (TA=25°C) SOT-23-3 (θJA=230°C/W) SOT-23-5L (θJA=230°C/W) TO-92 (θJA=220°C/W) 1. Maximum junction temperature is 125°C 2. θJA is measured with packages mounted onboard under still-air condition with 1W power applied. 3. Power rating is calculated using PD = (TJ – TA) /θJA, where TJ denotes junction temperature and TA denotes ambient temperature. Power Rating (TA=50°C) 326mW 326mW 341mW Power Rating (TA=70°C) 239mW 239mW 250mW 435mW 435mW 455mW Revision 12/4/2008 All contents are subject to change without prior notice. © Seaward Electronics, Inc., 2006. • www.seawardinc.com.cn • Page 5 OUTLINE DRAWING SOT-23-3 C J B H DIM A B C D E F G H J K L N DIMENSIONS INCHES MM MIN MAX MIN MAX 0.110 0.047 0.083 0.035 0.070 0.018 0.015 0.0005 0.034 0.003 0.120 0.055 0.104 0.040 0.080 0.024 0.020 0.004 0.040 0.007 0.027 2.80 1.20 2.10 0.89 1.78 0.45 0.37 0.013 0.887 0.085 3.04 1.40 2.64 1.03 2.05 0.60 0.51 0.10 1.02 0.18 0.69 D A E F G K L OUTLINE DRAWING SC59-3L (SOT-23-3L) H A DIM A1 N E B e1 D L Q SC 59-3L L1 C A A1 B C D H E e e1 L1 L Q DIMENSIONS INCHE MM MIN MAX MIN MAX 0.035 0.043 0.90 1.10 0.0004 0.005 0.01 0.13 0.012 0.020 0.30 0.50 0.004 0.008 0.09 0.20 0.110 0.122 2.80 3.10 0.098 0.122 2.50 3.10 0.059 0.067 1.50 1.70 0.037REF 0.075REF 0.008 0.014 0℃ 0.022 0.031 10℃ 0.95REF 1.90REF 0.20 0.35 0℃ 0.55 0.80 10℃ OUTLINE DRAWING SOT-23-5L K B H D DIMN A B C D E F H J K DIMENSIONS INCHES MM MIN MAX MIN MAX 0.110 0.059 0.036 0.014 0.0035 0.102 0.120 0.070 0.051 0.020 0.037 0.075 0.006 0.008 0.118 2.80 1.50 0.90 0.35 0.090 2.60 3.05 1.75 1.30 0.50 0.95 1.90 0.15 0.20 3.00 A F E C J Revision 12/4/2008 All contents are subject to change without prior notice. © Seaward Electronics, Inc., 2006. • www.seawardinc.com.cn • Page 6 OUTLINE DRAWING TO-92 A B D DIMN A B E F G H J K DIMENSIONS INCHES MM MIN MAX MIN MAX 0.175 0.170 0.500 0.016 0.045 0.095 0.080 0.125 0.205 0.210 0.610 0.021 0.055 0.105 0.105 0.165 4.445 4.318 12.70 0.407 1.143 2.413 2.032 3.175 5.207 5.334 15.50 0.533 1.397 2.667 2.667 4.191 E G F H K J OUTLINE DRAWING SOP-8 1 2 D 8 7 6 B1 B DIM A A1 B B1 C D H E N 3 4 DIMENSIONS INCHES MM MIN MAX MIN MAX 0.0532 0.0688 0.0040 0.0098 0.0130 0.0200 0.050 BSC 0.0075 0.0098 0.1890 0.1968 0.2284 0.2440 0.1497 0.1574 1.35 1.75 0.10 0.25 0.33 0.51 1.27 BSC 0.19 0.25 4.80 5.00 5.80 6.20 3.80 4.00 5 A1 E H A C OUTLINE DRAWING SOT-89 N SOT-89 A C D K L M J DIM A B C D E F G H I J K L M DIMENSIONS INCHES MM MIN MAX MIN MAX 0.173 0.181 0.159 0.167 0.067 0.075 0.051 0.059 0.094 0.102 0.035 0.047 0.118REF 0.059REF 0.016 0.020 0.055 0.063 0.014 0.016 10°TYP 0.028REF 4.400 4.600 4.050 4.250 1.700 1.900 1.300 1.500 2.400 2.600 0.890 1.200 3.00REF 1.50REF 0.400 0.520 1.400 1.600 0.350 0.410 10°TYP 0.70REF B F E H G I Revision 12/4/2008 All contents are subject to change without prior notice. © Seaward Electronics, Inc., 2006. • www.seawardinc.com.cn • Page 7 Customer Support Seaward Electronics Incorporated – China Section B, 2nd Floor, ShangDi Scientific Office Complex, #22 XinXi Road Haidian District, Beijing 100085, China Tel: 86-10-8289-5700/01/05 Fax: 86-10-8289-5706 Seaward Electronics Corporation – Taiwan 2F, #181, Sec. 3, Minquan East Rd, Taipei, Taiwan R.O.C Tel: 886-2-2712-0307 Fax: 886-2-2712-0191 Seaward Electronics Incorporated – North America 1512 Centre Pointe Dr. Milpitas, CA95035, USA Tel: 1-408-821-6600 Last Updated - 12/4/2008 Revision 12/4/2008 All contents are subject to change without prior notice. © Seaward Electronics, Inc., 2006. • www.seawardinc.com.cn • Page 8