SSPPXX443311LL Precision Adjustable Shunt Regulator Precision Adjustable Shunt Regulator July 2013 Rev. 2.0.1 GENERAL DESCRIPTION APPLICATIONS The SPX431L is a 3-terminal adjustable shunt Battery Operating Equipment voltage regulator providing a highly accurate Adjustable Supplies bandgap reference. The SPX431L acts as an open-loop error amplifier with a 2.5V Switching Power Supplies temperature compensation reference. The Error Amplifiers SPX431Ls thermal stability, wide operating Single Supply Amplifier current (100mA) and temperature range (0C to 105C) makes it suitable for a variety of Monitors / VCRs / TVs applications that require a low cost, high performance solution. SPX431L tolerance of Personal Computers 0.5% is proven to be sufficient to overcome all of the other errors in the system to virtually FEATURES eliminate the need for trimming in the power supply manufacturer s assembly line and Tight Voltage Tolerance 0.5% at 10mA contribute a significant cost savings. Wide Operating Current 1mA to 100mA The output voltage may be adjusted to any Extended Temperature Range: value between VREF and 20V with two 0C to 105C external resistors. The SPX431L is available in TO-92, and SOT-89 packages. Low Temperature Coefficient 30 ppm/C Improved Replacement in Performance for TL431 and AS431 Low Cost Solution TYPICAL BLOCK DIAGRAM Fig. 1: SPX431L Precision Adjustable Shunt Regulator Exar Corporation www.exar.com 48720 Kato Road, Fremont CA 94538, USA Tel. +1 510 668-7000 Fax. +1 510 668-7001 SSPPXX443311LL PPrreecciissiioonn AAddjjuussttaabbllee SShhuunntt RReegguullaattoorr ABSOLUTE MAXIMUM RATINGS OPERATING RATINGS These are stress ratings only and functional operation of Input Voltage Range V ................................ V to 20V REF KA the device at these ratings or any other above those Cathode Current I ...........................................10ma K indicated in the operation sections of the specifications Junction Temperature Range ................................ 150 C below is not implied. Exposure to absolute maximum Thermal Resistance rating conditions for extended periods of time may affect 0 (TO-92) .................................................160C/W reliability. JA 0 (TO-92) .................................................. 80C/W JC Cathode-Anode Reverse Breakdown V .................. 20V KA Typical Derating (TO-92) ........................... 6.3 mW/C Anode-Cathode Forward Current, (<10ms) I .......... 1A AK Operating Cathode Current I ......................... 100mA KA 0 (SOT-89) ................................................110C/W JA Reference Input Current I ................................ 10mA REF 0 (SOT-89) .................................................. 8C/W JC Continuous Power Dissipation at 25C PD Typical Derating (SOT-89) ......................... 9.1 mW/C TO-92 ......................................................... 775mW SOT-89 ..................................................... 1000mW Storage Temperature T ........................-65 to 150C STG Lead Temperature (Soldering 10 sec.) T ................300C L ELECTRICAL SPECIFICATIONS Specifications with standard type are for an Operating Junction Temperature of T = 25C only limits applying over the full A Operating Junction Temperature range are denoted by a . Minimum and Maximum limits are guaranteed through test, design, or statistical correlation. Typical values represent the most likely parametric norm at T = 25C, and are provided A for reference purposes only. Unless otherwise indicated, I = 10mA V = V . K K REF Parameter Min. Typ. Max. Units Conditions SPX431LA Reference Voltage 2.503 2.515 V 2.490 1 VREF withTemp. 0.07 0.20 mV/C Ratio of Change in VREF -2.7 -1.0 VREF to 10V 0.3 mV/V to Cathode Voltage -0.4 VREF to 10V -2.0 Reference Input Current 0.7 4.0 A IREF Temp Deviation 0.4 1.2 A TJ = 0C to 105C Min IK for Regulation 0.4 1.0 mA Off State Leakage 0.04 1.0 A VREF = 0V, VKA = 20V Dynamic Output z 1kHz 0.15 0.5 Impedance IK = 1 to 100mA SPX431L Reference Voltage 2.470 2.495 2.520 V 1 VREF withTemp. 0.07 0.20 mV/C Ratio of Change in VREF -2.7 -1.0 VREF to 10V 0.3 mV/V to Cathode Voltage -2.0 -0.4 VREF to 10V Reference Input Current 0.7 4.0 A IREF Temp Deviation 0.4 1.2 A TJ = 0C to 105C Min IK for Regulation 0.4 1.0 mA Off State Leakage 0.04 1.0 A VREF = 0V, VKA = 20V Dynamic Output z 1kHz 0.15 0.5 Impedance IK = 1 to 100mA SPX431LC Reference Voltage 2.445 2.495 2.520 V 1 VREF withTemp. 0.07 0.20 mV/C Ratio of Change in VREF -1.0 VREF to 10V -2.7 0.3 mV/V to Cathode Voltage -0.4 VREF to 10V -2.0 Reference Input Current 0.7 4.0 A IREF Temp Deviation 0.4 1.2 A TJ = 0C to 105C 2013 Exar Corporation 2/11 Rev. 2.0.1