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 0.25Ω Typical Output Impedance PIN CONFIGURATION ( SOT-23 ) ( SOT-89 ) ( TO-92 ) PART MARKING ( SOT-23 ) 2013/03/13 Ver.4 ( SOT-89 ) ( TO-92 ) Page 2 SP431 High Voltage Adjustable Precision Shunt Regulators PIN DESCRIPTION: SP431AS23RGB/SP431BS23RGB/ SP431AS89RGB/ SP431BS89RGB Pin Symbol Description 1 R REF 2 C CATHODE 3 A ANODE PIN DESCRIPTION: SP431AT92AGB/SP431BT92AGB Pin Symbol Description 1 R REF 2 A ANODE 3 C CATHODE PIN DESCRIPTION: SP431CAS23RGB/SP431CBS23RGB Pin 1 2 Symbol C R Description CATHODE REF 3 A ANODE ORDERING INFORMATION Part Number Voltage Tolerance Package SP431AS23RGB 0.5% SOT-23 SP431BS23RGB 1.0% SOT-23 SP431AS89RGB 0.5% SOT-89 SP431BS89RGB 1.0% SOT-89 SP431CAS23RGB 0.5% SOT-23 SP431CBS23RGB 1.0% SOT-23 SP431AT92AGB 0.5% TO-92 SP431BT92AGB 1.0% TO-92 ※ Week Code : A ~ Z ( 1 ~ 26 ) ; a ~ z ( 27 ~ 52 ) ※ SP431AS23RGB/SP431BS23RGB : Tape Reel ; Pb – Free; Halogen – Free ※ SP431AS89RGB/SP431BS89RGB : Tape Reel ; Pb – Free; Halogen – Free ※ SP431CAS23RGB/SP431CBS23RGB : Tape Reel ; Pb – Free; Halogen – Free ※ SP431AT92AGB/SP431BT92AGB : Tape Ammo ; Pb – Free; Halogen – Free BLOCK DIAGRAM 2013/03/13 Ver.4 Part Marking 31AYW 31BYW SP431A SP431B 31CAYW 31CBYW SP431A SP431B Page 3 SP431 High Voltage Adjustable Precision Shunt Regulators ABSOULTE MAXIMUM RATINGS (TA=25℃ Unless otherwise specified) Parameter Cathode Voltage Continuous Cathode Current Symbol VZ IZ Value 37 150 Unit V mA IREF 10 mA TJ -40 ~ +150 ℃ TSTG -65 ~ +150 ℃ TSOL 260 ℃ ӨJA 140 ℃/W Reference Current Operation Junction Temperature Range Storage Temperature Range Lead Temperature Range (Soldering 10sec.) Thermal Resistance 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) Parameter Symbol Conditions Min. SP431AS23RGB SP431AS89RGB 2.482 SP431CAS23RGB VZ = VREF SP431AT92AGB Reference Voltage VREF IZ = 10mA SP431BS23RGB SP431BS89RGB 2.47 SP431CBS23RGB SP431BT92AGB SP431AS23RGB SP431AS89RGB 2.482 SP431CAS23RGB VZ = VREF SP431AT92AGB Reference Voltage VREF IZ = 1mA SP431BS23RGB SP431BS89RGB 2.47 SP431CBS23RGB SP431BT92AGB TA=-40℃~+80℃ VREF Temp Deviation VDEV VZ = VREF , IZ = 10mA Ratio of change in VREF to change ∆VREF / IZ = 10mA in Cathode voltage ∆VZ ∆VZ = 36V ~ VREF Reference Input R1=10KΩ , R2 = ∞ , 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 2013/03/13 Ver.4 Typ. Max. 2.495 2.508 Unit V 2.495 2.52 2.495 2.508 V 2.495 2.52 10 25 mV -1.4 -2.7 mV / V 2 4 uA 0.8 2.5 uA 0.1 0.5 uA Page 4 SP431 High Voltage Adjustable Precision Shunt Regulators Dynamic output impedance RZ Minimum Operation Current IZ(MIN) f < 1KHZ , VZ = VREF IZ = 1mA ~ 100mA VZ = VREF 0.25 0.5 Ω 0.4 0.7 mA TESTING CIRCUIT 2013/03/13 Ver.4 Page 5 SP431 High Voltage Adjustable Precision Shunt Regulators APPLICATION CIRCUIT Shunt Regulator Single-Supply Comparator With Temperature-Compensated Threshold Precision High-Current Series Regulator 2013/03/13 Ver.4 Page 6 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 2013/03/13 Ver.4 Page 7 SP431 High Voltage Adjustable Precision Shunt Regulators APPLICATION CIRCUIT PWM Converter With Reference Voltage Monitor Delay Timer 2013/03/13 Ver.4 Page 8 SP431 High Voltage Adjustable Precision Shunt Regulators PERFORMANCE CHARACTERISTICS 2013/03/13 Ver.4 Page 9 SP431 High Voltage Adjustable Precision Shunt Regulators PERFORMANCE CHARACTERISTICS 2013/03/13 Ver.4 Page 10 SP431 High Voltage Adjustable Precision Shunt Regulators PERFORMANCE CHARACTERISTICS 2013/03/13 Ver.4 Page 11 SP431 High Voltage Adjustable Precision Shunt Regulators SOT-23 PACKAGE OUTLINE 2013/03/13 Ver.4 Page 12 SP431 High Voltage Adjustable Precision Shunt Regulators SOT-89 PACKAGE OUTLINE 2013/03/13 Ver.4 Page 13 SP431 High Voltage Adjustable Precision Shunt Regulators TO-92 PACKAGE OUTLINE 2013/03/13 Ver.4 Page 14 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 7F-2, No.3-1, Park Street NanKang District (NKSP), Taipei, Taiwan 115 Phone: 886-2-2655-8178 Fax: 886-2-2655-8468 ©http://www.syncpower.com 2013/03/13 Ver.4 Page 15