SPX432L Ultra 1.24V Precision Adjustable Shunt Regulator FEATURES APPLICATIONS • • • • • • • • • • • • • Low Voltage Operation ......................................... 1.24V Trimmed Bandgap to ..............................................1% µA to 100mA Wide Operating Current ................ 100µ Extended Temperature Range ...............0°°C to 105°°C Adjustable Output Voltage...........................VREF to 18V Low Temperature Coefficient ....................... 50 ppm/°C Offered in TO-92, SOIC, SOT-89, SOT-23-3 3.0V to 3.3V Switching Power Supplies Adjustable Supplies Error Amplifiers Single Supply Amplifier Monitors / VCR / TV Personal Computers PRODUCT DESCRIPTION The SPX432L is a 3-terminal Adjustable Shunt Voltage Regulator providing a highly accurate 1.24V bandgap reference with 0.5% tolerance. The SPX432L thermal stability, wide operating current (100mA) and temperature range (0°C to 105°C) makes it suitable for abroad range of applications. SPX432L 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 SPX432L is an ideal voltage reference in an isolated feedback circuit for 3.0V to 3.3V switching mode power supplies. SPX432L 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) TO-92 (N) CATHODE 1 8 REF ANODE 2 7 ANODE SPX432L ANODE 3 6 ANODE N/C 4 5 N/C Top View SOT-23-3 (M) 2 1 3 REF CATHODE ANODE Bottom View SOT-89 (M1) ANODE SPX432L SPX432L 1 REF CATHODE Top View REF 2 3 ANODE CATHODE Top View Rev. 10/25/00 SPX432L CATHODE (K) REFERENCE (R) + 1.24V ANODE (A) ABSOLUTE MAXIMUM RATINGS Parameter Cathode-Anode Reverse Breakdown Anode-Cathode Forward Current Operating Cathode Current Reference Input Current Continuous Power at 25°C TO-92 8L SOIC SOT-89 SOT-23 Junction Temperature Storage Temperature Lead Temperature (Soldering 10 sec.) Symbol VDA IAK IKA IREF PD TJ TSTG TL Rating 18 1 100 1 Units V A mA mA 775 750 1000 200 150 - 65 to +150 300 mW mW mW mW °C °C °C 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 18 500 TYPICAL THERMAL RESISTANCES Unit V µA Package TO-92 SOIC SOT-89 SOT-23 θJA 160 °C/W 175 °C/W 110 °C/W 575 °C/W θJC 80 °C/W 45 °C/W 8 °C/W 150 °C/W Typical Derating 6.3 mW/°C 5.7 mW/°C 9.1 mW/°C 1.7 mW/°C Rev. 10/25/00 SPX432L ELECTRICAL CHARACTERISTICS are guaranteed over the full junction temperature range (0°C to 105°C). 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 SPX432L Parameter Symbol Circuit Test Condition Min Typ Max Unit Output Voltage VREF 1 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 1 1 1 2 2 IK (MIN) 1 IK (MIN) 3 IK = 500µA, TJ = 25°C, VK = VREF VKA = 1.25V to 15V IK = 100µA to 80mA 0 < TJ < 105°C 1.2276 0 < TJ < 105°C VREF = 0V, VKA = 18V 1.240 1.2524 V 10 3 2 3 0.3 30 6 6 0.6 mV mV mV µA µA 80 100 nA 0.04 500 nA mV % 0 ∆VREF ∆Τ -10 5000 TC in %/°C = 0.5 -20 ∆VREF (mV) TC in mV/°C = -55 -25 0 25 50 75 TC in ppm/°C = 100 125 ∆T A ∆VREF VREF at 25°C ) 0 ) 0 ppm Calculating Average Temperature Coefficient (TC) ) x 100 ∆T A ∆VREF VREF at 25°C ) x 10 6 ∆T A Temperature (°C) 0.06 mV/°C 0.002 %/°C 24 ppm/°C TEST CIRCUITS VIN VKA = VREF IREF IK VIN R1 (VREF) VKA IK VIN VKA IK (OFF) IREF R2 Figure 1a. Test Circuit 1 Figure 1b. Test Circuit 2 Figure 1c. Test Circuit 3 Rev. 10/25/00 SPX432L TYPICAL APPLICATIONS +3.3V 0.1µF 470µF PHD 3055E +12V 500Ω 2.7V 140Ω 0.1µF 0.1µF 0.1µF AS432L 120Ω INTEL I 740 1000µF *If the output voltage has noise, then please add a 0.1µF in between drain and gate of power MOSFET to reduce the noise. Rev. 10/25/00 SPX432L 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 45° 0.77 (0.030) 0.64 (0.025) 7 °(4 PLCS) 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. 10/25/00 SPX432L 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) 0.0155 (0.3937) 0.0145 (0.3683) 0.055 (1.397) 0.045 (1.143) 0.105 (2.667) 0.095 (2.413) Rev. 10/25/00 SPX432L PACKAGE DRAWING SOT-23-3L (M) 0.015 - 0.018 (0.381 - 0.457) 0.047 - 0.055 (1.194 - 1.397) 0.083 - 0.098 (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) 0.001 - 0.004 (0.025 - 0.102) 0.003 - 0.005 (0.076 - 0.127) 0.030 - 0.041 (0.762 - 1.041) 0.018 - 0.024 (0.457 - 0.610) Rev. 10/25/00 SPX432L PACKAGE DRAWING SOT-89 (M1) C A J N P 2 1 3 K B F D G -T- STYLE 1 PIN 1. BASE 2. COLLECTOR 3. EMITTER STYLE 3 PIN 1. GATE 2. ANODE 3. CATHODE STYLE 2 PIN 1. ANODE 2. CATHODE 3. NO CONNECTION STYLE 4 PIN 1. DRAIN 2. GATE 3. SOURCE DIM A B C D E F G J K L N P MILLIMETERS MIN MAX 4.40 4.60 2.29 2.60 140 160 0.36 0.48 1.62 1.80 0.44 0.53 150 BSC 0.35 0.44 0.80 1.04 300 BSC 2.04 2.28 3.94 4.25 INCHES MIN MAX 0.174 0.181 0.091 0.102 0.056 0.062 0.015 0.018 0.064 0.070 0.018 0.020 0.059 BSC 0.014 0.017 0.032 0.040 0.118 BSC 0.081 0.089 0.156 0.167 Rev. 10/25/00 SPX432L ORDERING INFORMATION Ordering No. SPX432LM SPX432LM1 SPX432S SPX432N Precision Output Voltage Packages 1% 1% 1% 1% 1.24V 1.24V 1.24V 1.24V 3 Lead SOT-23 3 Lead SOT-89 8 Lead SOIC 3 Lead TO-92 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: [email protected] 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. 10/25/00