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| SPX432 Ultra 1.24V Precision Adjustable Shunt Regulator FEATURES * * * * * * * * Low Voltage Operation ........................................ 1.24V Trimmed Bandgap to ...................................0.5%/ 1% Wide Operating Current ................... 1mA to 100mA Extended Temperature Range ...............0C to 105C Adjustable Output Voltage...........................VREF to 18V Low Temperature Coefficient ....................... 50 ppm/C Offered in TO-92, SOIC, SOT-23-3, SOT-23-5 Improved Replacement in Performance for TLV431 APPLICATIONS * * * * * * 3.0V to 3.3V Switching Power Supplies Adjustable Supplies Error Amplifiers Single Supply Amplifier Monitors / VCR / TV Personal Computers PRODUCT DESCRIPTION The SPX432 is a 3-terminal Adjustable Shunt Voltage Regulator providing a highly accurate 1.24V bandgap reference with 0.5% tolerance. The SPX432 thermal stability, wide operating current (80mA) and temperature range (0C to 105C) makes it suitable for abroad range of applications. SPX432 tolerance of 0.5% is proven to be sufficient to overcome other errors in the system to virtually eliminate the need for trimming in the power supply manufactures assembly line and contribute a significant cost savings. The SPX432 is an ideal voltage reference in an isolated feedback circuit for 3.0V to 3.3V switching mode power supplies. SPX432 offers many advantages over TLV431, such as, wider output voltage up to 18V vs. 6V, output current of 80mA vs. 15mA, and a wider temperature range with tighter tolerance down to 0.5%. PIN CONNECTIONS 8-Pin Surface Mount (S) CATHODE ANODE ANODE N/C 1 2 3 4 8 7 REF ANODE ANODE N/C REF ANODE CATHODE TO-92 (N) 1 2 3 SPX432 6 5 Top View SOT-23-3 (M) ANODE Bottom View SOT-23-5 (M5) ANODE REF SPX432 SPX432 REF CATHODE N/C N/C CATHODE Top View Top View Rev. 11/21/00 SPX432 CATHODE (K) REFERENCE (R) + 1.24V ABSOLUTE MAXIMUM RATINGS Parameter Cathode-Anode Reverse Breakdown Anode-Cathode Forward Current Operating Cathode Current Reference Input Current Continuous Power at 25C TO-92 8L SOIC SOT-23 Junction Temperature Storage Temperature Lead Temperature (Soldering 10 sec.) Symbol VDA IAK IKA IREF PD ANODE (A) Rating 18 1 80 1 775 750 200 150 - 65 to +150 300 Units V A mA mA mW mW mW C C C TJ TSTG TL Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability. RECOMMENDED CONDITIONS Parameter Cathode Voltage Cathode Current Symbol VKA IK Rating VREF to 18 10 Unit V mA TYPICAL THERMAL RESISTANCES Package TO-92 SOIC SOT-23 JA 160 C/W 175 C/W 575C/W JC 80 C/W 45 C/W 150C/W Typical Derating 6.3 mW/C 5.7 mW/C 1.7mW/C Rev. 11/21/00 SPX432 ELECTRICAL CHARACTERISTICS are guaranteed over the full junction temperature range (0C to 105C). Ambient temperature must be derated based upon power dissipation and package thermal characteristics. Unless otherwise specified, test conditions are: VKA = VREF and IK = 10mA. Test SPX432A SPX432 Parameter Symbol Circuit Test Condition Min Typ Max Min Typ Max Unit Output Voltage VREF 1 IK = 10mA, 1.2338 1.240 1.2462 1.2276 1.240 1.2524 V 1 Line Regulation Load Regulation Temperature Deviation Reference Input Current Reference Input Current Temperature Coefficient Minimum Cathode Current for Regulation Off State Leakage VREF VREF VREF IREF I REF IK (MIN) IK (MIN) 1 1 1 2 2 1 3 VREF = 0V, VKA = 18V TJ = 25C, VK = VREF VKA = 1.25V to 15V IK = 1 to 80mA 0 < TJ < 105C 0 < TJ < 105C 19 3 2 3 0.3 0.6 0.04 37 6 6 6 0.6 1 500 19 3 2 3 0.3 0.6 0.04 37 6 6 6 0.6 1 500 mV mV mV A A mA nA Calculating Average Temperature Coefficient (TC) ppm % mV 0 0 0 TC in mV/C = TC in %/C = VREF (mV) T A VREF VREF at 25C T A VREF VREF at 25C T A -10 5000 0.5 -20 -55 -25 0 25 50 75 100 125 TC in ppm/C = Temperature (C) 0.06 mV/C 0.002 %/C 24 ppm/C TEST CIRCUITS VIN VKA = VREF VIN VKA VIN VKA IREF IK R1 (VREF) R2 IK IREF Figure 1a. Test Circuit 1 Figure 1b. Test Circuit 2 Figure 1c. Test Circuit 3 ) ) VREF ) ) x 100 x 10 6 IK (OFF) Rev. 11/21/00 SPX432 TYPICAL APPLICATIONS +3.3V 0.1F 470F +12V PHD 3055E 500 2.7V 140 0.1F 0.1F AS432 120 0.1F INTEL I 740 1000F *If the output voltage has noise, then please add a 0.1F in between drain and gate of power MOSFET to reduce the noise. Rev. 11/21/00 SPX432 PACKAGE DRAWING SOIC-8 (S) 4.0 (0.158) 3.8 (0.150) 5.2 (0.205) 4.6 (0.181) 6.2 (0.244) 5.8 (0.228) Pin 1 1.27 (0.50) BSC 1.75 (0.069) 1.35 (0.053) 0.78 (0.031) 0.61 (0.024) 5.0 (0.197) 4.8 (0.188) 0.37 (0.015) BSC 0.77 (0.030) 0.64 (0.025) 7 (4 PLCS) 45 3-6 0.56 (0.022) 0.49 (0.019) 0.45 (0.018) 0.35 (0.014) 0.20 (0.008) 0.10 (0.004) 0.22 (0.009) 0.19 (0.007) 7 (4 PLCS) Rev. 11/21/00 SPX432 PACKAGE DRAWING SOT-23-3L (M) 0.015 - 0.018 (0.381 - 0.457) 0.047 - 0.055 0.083 - 0.098 (1.194 - 1.397) (2.108 - 2.489) 0.035 - 0.040 (0.889 - 1.016) 0.020 - 0.024 (0.508 - 0.610) 0.070 - 0.080 (1.778 - 2.032) 0.110 - 0.120 (2.794 - 3.048) 0.003 - 0.005 (0.076 - 0.127) 0.001 - 0.004 (0.025 - 0.102) 0.030 - 0.041 (0.762 - 1.041) 0.018 - 0.024 (0.457 - 0.610) Rev. 11/21/00 SPX432 PACKAGE DRAWING TO-92 (N) 0.090 (2.286) Radius typ. 2 1 3 0.145 (3.683) 0.135 (3.429) 0.055 (1.397) 0.045 (1.143) 10 typ. BOTTOM VIEW 0.185 (4.699) 0.045 (1.143) 0.085 (2.159) Diameter 5 typ. 0.185 (4.699) 0.175 (4.445) 0.090 (2.286) typ. 5 typ. Seating Plane 0.025 (0.635) Max Uncontrolled Lead Diameter 0.500 (12.70) Min. 0.016 (0.406) 0.014 (0.356) 0.055 (1.397) 0.045 (1.143) 0.105 (2.667) 0.095 (2.413) 0.0155 (0.3937) 0.0145 (0.3683) Rev. 11/21/00 SPX432 PACKAGE DRAWING SOT-23-5L (M5) D B (5 PLACES) E H e e1 A A2 A1 L SYMBOL MILLIMETERS INCHES C MIN. 0.90 0 0.30 0.10 2.70 1.40 1.70 2.50 MAX 1.30 0.10 MIN. .035 0 .012 .004 .106 .055 .066 .098 MAX. .051 .004 .019 .0137 .122 .071 .082 .118 NOTE: 1. REFER TO APPLICABLE 2. CONTROLLING DIMENTION : MILLIMETER 3. PACKAGE SURFACE FINISHING TO BE SMOOTH FINISH. A A1 A2 B C D E e e1 H L 0.80 REF 0.50 0.35 3.10 1.80 2.10 3.00 .0315 REF 0.95 BSC. .037 BSC. MIN 0.2 MIN .0078 Rev. 11/21/00 SPX432 ORDERING INFORMATION Ordering No. SPX432M SPX432AM SPX432M5 SPX432AM5 SPX432S SPX432AS SPX432N SPX432AN Precision 1% 0.5% 1% 0.5% 1% 0.5% 1% 0.5% Output Accuracy 1.24V 1.24V 1.24V 1.24V 1.24V 1.24V 1.24V 1.24V Packages 3 Lead SOT-22-3 3 Lead SOT-23-3 5 Lead SOT-22-5 5 Lead SOT-23-5 8 Lead SOIC 8 Lead SOIC 3 Lead TO-92 3 Lead TO-92 MARKING INFORMATION [For SOT-23 (3 and 5 Pin) and SOT-89 only] Device SPX432A SPX432 Marking 4321 4322 Corporation SIGNAL PROCESSING EXCELLENCE Sipex Corporation Headquarters and Main Offices: 22 Linnell Circle Billerica, MA 01821 TEL: (978) 667-8700 FAX: (978) 670-9001 e-mail: sales@sipex.com 233 South Hillview Drive Milpitas, CA 95035 TEL: (408) 935-7600 FAX: (408) 934-7500 Sipex Corporation reserves the right to make changes to any products described herein. Sipex does not assume any liability arising out of the application or use of any product or circuit described hereing; neither does it convey any license under its patent rights nor the rights of others. Rev. 11/21/00 |
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