SP431

SP431 High Voltage Adjustable Precision Shunt Regulators DESCRIPTION The SP431 is high-voltage three-terminal adjustable voltage references, with specified thermal stability over applicable industrial and commercial temperature ranges. Output voltage can be set to any value between VREF (2.5V) and 36V with two external resistors. These devices have a typical output impedance of 0.25Ω. Active output circuitry provides a very sharp turn-on characteristic, making the SP431 excellent replacements for low-voltage Zener diodes in many applications, including onboard regulation and adjustable power supplies. APPLICATIONS Battery Power Equipment Linear Regulators Switch Power Supply Cellular Phone Digital Cameras Computer Disk Drivers Instrumentation FEATURES Low Output Noise Adjustable Output Voltage, VO = Vref to 36 V Low Operational Cathode Current 0.2Ω Typical Output Impedance PIN CONFIGURATION ( TO-92 ) PART MARKING ( TO-92 ) 2007/07/15 Ver.3 Page 1 SP431 High Voltage Adjustable Precision Shunt Regulators PIN DESCRIPTION Pin 1 2 3 Symbol R C A Description REF CATHODE ANODE ORDERING INFORMATION Part Number Voltage Tolerance Package SP431AT92AG 1.0% TO-92 SP431BT92AG 0.5% TO-92 ※ Week Code : A ~ Z ( 1 ~ 26 ) ; a ~ z ( 27 ~ 52 ) ※ SP431AT92AG / SP431BT92AG : Tape Ammo ; Pb-Free Part Marking SP431A SP431B BLOCK DIAGRAM 2007/07/15 Ver.3 Page 2 SP431 High Voltage Adjustable Precision Shunt Regulators ABSOULTE MAXIMUM RATINGS (TA=25℃ Unless otherwise specified) Parameter Cathode Voltage Continuous Cathode Current Reference Current Operation Junction Temperature Range Storage Temperature Range Lead Temperature Range (Soldering 10sec.) Thermal Resistance Symbol VZ IZ IREF TJ TSTG TSOL ӨJA Value 37 150 10 -40 ~ +150 -65 ~ +150 260 140 Unit V mA mA ℃ ℃ ℃ ℃/W The IC has a protection circuit against static electricity. Do not apply high static electricity or high voltage that exceeds the performance of the protection circuit to the IC. ELECTRICAL CHARACTERISTICS (TA=25℃ , Unless otherwise specified) SP431XT92AG Parameter Reference Voltage VREF Temp Deviation Symbol VREF VDEV VZ = VREF IZ = 10mA Conditions SP431AT92AG SP431BT92AG Min. 2.475 2.487 Typ. 2.5 2.5 10 -1.4 2 0.8 0.1 0.25 0.4 Max. 2.525 V 2.513 25 -2.7 4 2.5 0.5 0.5 0.7 mV mV / V uA uA uA Ω mA Unit TA=-40℃~+80℃ VZ = VREF , IZ = 10mA Ratio of change in VREF to change ΔVREF / IZ = 10mA in Cathode voltage ΔVZ ΔVZ = 36V ~ VREF R1=10KΩ , R2 = ∞ , Reference Input IREF Current IZ = 10mA TA=-40℃~+80℃ IREF Temp Deviation IREF(DEV) R1=10KΩ , R2 = ∞ , IZ = 10mA Off state Cathode Current IZ(OFF) VREF = 0V VZ = 36V f < 1KHZ , VZ = VREF Dynamic output impedance RZ IZ = 1mA ~ 100mA Minimum Operation Current IZ(MIN) VZ = VREF 2007/07/15 Ver.3 Page 3 SP431 High Voltage Adjustable Precision Shunt Regulators TESTING CIRCUIT 2007/07/15 Ver.3 Page 4 SP431 High Voltage Adjustable Precision Shunt Regulators APPLICATION CIRCUIT Shunt Regulator Single-Supply Comparator With Temperature-Compensated Threshold Precision High-Current Series Regulator 2007/07/15 Ver.3 Page 5 SP431 High Voltage Adjustable Precision Shunt Regulators APPLICATION CIRCUIT Output Control of a Three-Terminal Fixed Regulator High-Current Shunt Regulator Precision 5-V 1.5-A Regulator 2007/07/15 Ver.3 Page 6 SP431 High Voltage Adjustable Precision Shunt Regulators APPLICATION CIRCUIT PWM Converter With Reference Voltage Monitor Delay Timer 2007/07/15 Ver.3 Page 7 SP431 High Voltage Adjustable Precision Shunt Regulators PERFORMANCE CHARACTERISTICS 2007/07/15 Ver.3 Page 8 SP431 High Voltage Adjustable Precision Shunt Regulators PERFORMANCE CHARACTERISTICS 2007/07/15 Ver.3 Page 9 SP431 High Voltage Adjustable Precision Shunt Regulators PERFORMANCE CHARACTERISTICS 2007/07/15 Ver.3 Page 10 SP431 High Voltage Adjustable Precision Shunt Regulators TO-92 PACKAGE OUTLINE 2007/07/15 Ver.3 Page 11 SP431 High Voltage Adjustable Precision Shunt Regulators Information provided is alleged to be exact and consistent. SYNC Power Corporation presumes no responsibility for the penalties of use of such information or for any violation of patents or other rights of third parties which may result from its use. No license is granted by allegation or otherwise under any patent or patent rights of SYNC Power Corporation. Conditions mentioned in this publication are subject to change without notice. This publication surpasses and replaces all information previously supplied. SYNC Power Corporation products are not authorized for use as critical components in life support devices or systems without express written approval of SYNC Power Corporation. ©The SYNC Power logo is a registered trademark of SYNC Power Corporation ©2004 SYNC Power Corporation – Printed in Taiwan – All Rights Reserved SYNC Power Corporation 9F-5, No.3-2, Park Street NanKang District (NKSP), Taipei, Taiwan 115 Phone: 886-2-2655-8178 Fax: 886-2-2655-8468 ©http://www.syncpower.com 2007/07/15 Ver.3 Page 12