XXRRPP443311LL PPrreecciissiioonn AAddjjuussttaabbllee SShhuunntt RReegguullaattoorr September 2010 Rev. 1.2.0 GENERAL DESCRIPTION APPLICATIONS The XRP431L is a three-terminal adjustable Charger shunt voltage regulator providing a highly Switching Power Supplies accurate bandgap reference. Graphic Cards The XRP431L acts as an open-loop error Monitors, VCRs, TVs amplifier with a 1.24V temperature compensation reference. The XRP431L has thermal stability, wide operating current of FEATURES 100mA and broad temperature range of -40C to 125C, making it suitable for a variety of 0.5% Precise Output Voltage applications which require a low-cost, high Adjustable 1.24V to 18V performance solution. The XRP431L tolerance Wide Operating Current of 0.5% is proven to be sufficient to overcome all other errors in the system to virtually 0.1mA to 100mA eliminate the need for trimming in the power Low Temperature Coefficient supply manufacturer s assembly line and at 20ppm/C contribute a significant cost savings. The output voltage may be adjusted to any value Extended Temperature Range between V and 18 volts with two external REF -40C to +125C resistors. RoHS Compliant Green/Halogen Free The XRP431L is available in RoHS compliant, 5-pin SOT23 Package green/halogen free 5-pin SOT23 package. TYPICAL APPLICATION DIAGRAM Fig. 1: XRP431L Application Diagram Exar Corporation www.exar.com 48720 Kato Road, Fremont CA 94538, USA Tel. +1 510 668-7000 Fax. +1 510 668-7001 XXRRPP443311LL PPrreecciissiioonn AAddjjuussttaabbllee SShhuunntt RReegguullaattoorr ABSOLUTE MAXIMUM RATINGS OPERATING RATINGS These are stress ratings only and functional operation of Cathode-Anode Voltage V .................................... <18V KA the device at these ratings or any other above those Operating Cathode Current (cont.) I ................ <100mA KA indicated in the operation sections of the specifications Ambient Temperature Range .................... -40C to 125C below is not implied. Exposure to absolute maximum Thermal Resistance (SOT23-5) ................... 84.8C/W JC rating conditions for extended periods of time may affect reliability. Cathode-Anode Voltage V ..................................... 20V KA Operating Cathode Current (cont.) I ................... 100mA KA Reference Input Current Range I ......................... 10mA REF Power Dissipation (Cont. 25C) P ....................... 770mW D Junction Temperature .......................................... 150C Storage Temperature T ........................ -65C to 150C STG ESD Rating (HBM - Human Body Model) .................... 2kV ELECTRICAL SPECIFICATIONS Specifications with standard type are for an Operating Ambient Temperature of T = 25C only limits applying over the full A Operating Ambient 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. Parameter Min. Typ. Max. Units Conditions Test circuit 1 Reference Voltage 1.234 1.240 1.246 V V =V , I =10mA KA REF KA Test circuit 1 2 10 mV V =V , I =10mA, 0C T 70C KA REF KA A Test circuit 1 V with temperature T 3 10 mV REF C V =V , I =10mA, -40C T 85C KA REF KA A Test circuit 1 4 15 mV V =V , I =10mA, -40C T 125C KA REF KA A Ratio of change in V to Test circuit 2 REF -1.5 -0.5 mV/V Cathode Voltage V / V V V 16V, I =10mA REF KA REF KA KA Test circuit 2 Reference Input Current I 0.15 0.4 A REF I =10mA, R1=10k , R2= KA Test circuit 2 I Temperature Deviation I 0.1 0.4 A REF REF I =10mA, R1=10k , R2= KA Minimum I for Regulation Test circuit 1 KA 55 80 A I V =V KA(MIN) KA REF Test circuit 3 40 100 nA V =18V, V =0V KA REF Off State Leakage I KA(OFF) Test circuit 3 10 50 nA V =6V, V =0V KA REF Test circuit 1 Dynamic Output Impedance Z 0.05 0.15 KA V =V , f 1KHz, I =1 to 100mA KA REF Z KA 2010 Exar Corporation 2/8 Rev. 1.2.0