SP431. High Voltage Adjustable Precision Shunt Regulators
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1 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 36V Low Operational Cathode Current 0.25Ω Typical Output Impedance PIN CONFIGURATION ( SOT-23 ) ( SOT-89 ) ( TO-92 ) PART MARKING ( SOT-23 ) ( SOT-89 ) ( TO-92 ) 2018/07/02 Ver.6 Page 1
2 PIN DESCRIPTION: SP431AS23RGB/SP431BS23RGB Pin Symbol Description 1 R REF 2 C CATHODE 3 A ANODE PIN DESCRIPTION: SP431AS89RGB/ SP431BS89RGB/ SP431AT92AGB/SP431BT92AGB Pin Symbol Description 1 R REF 2 A ANODE 3 C CATHODE PIN DESCRIPTION: SP431CAS23RGB/SP431CBS23RGB Pin Symbol Description 1 C CATHODE 2 R REF 3 A ANODE ORDERING INFORMATION Part Number Voltage Tolerance Package Part Marking SP431AS23RGB 0.5% SOT-23 31AYW SP431BS23RGB 1.0% SOT-23 31BYW SP431AS89RGB 0.5% SOT-89 SP431A SP431BS89RGB 1.0% SOT-89 SP431B SP431CAS23RGB 0.5% SOT-23 31CAYW SP431CBS23RGB 1.0% SOT-23 31CBYW SP431AT92AGB 0.5% TO-92 SP431A SP431BT92AGB 1.0% TO-92 SP431B 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 2018/07/02 Ver.6 Page 2
3 ABSOULTE MAXIMUM RATINGS (TA=25 Unless otherwise specified) Parameter Symbol Value Unit Cathode Voltage VZ 37 V Continuous Cathode Current IZ 150 ma Reference Current IREF 10 ma Operation Junction Temperature Range TJ -40 ~ +150 Storage Temperature Range TSTG -65 ~ +150 Lead Temperature for 10 seconds TSOL 260 Thermal Resistance-Junction to Ambient (TO-92) ӨJA 140 /W Thermal Resistance-Junction to Case (TO-92) ӨJC 60 /W Thermal Resistance-Junction to Ambient (SOT-89) ӨJA 85 /W Thermal Resistance-Junction to Case (SOT-89) ӨJC 45 /W Thermal Resistance-Junction to Ambient (SOT-23) ӨJA 250 /W Thermal Resistance-Junction to Case (SOT-23) ӨJC 120 /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) Reference Voltage Reference Voltage Parameter Symbol Conditions Min. Typ. Max. Unit VREF VREF VZ = VREF IZ = 10mA VZ = VREF IZ = 1mA SP431AS23RGB SP431AS89RGB SP431CAS23RGB SP431AT92AGB SP431BS23RGB SP431BS89RGB SP431CBS23RGB SP431BT92AGB SP431AS23RGB SP431AS89RGB SP431CAS23RGB SP431AT92AGB SP431BS23RGB SP431BS89RGB SP431CBS23RGB SP431BT92AGB TA=-40 ~ VZ = VREF, IZ = 10mA VREF Temp Deviation VDEV mv TA=-40 ~ VZ = VREF, IZ = 10mA Ratio of change in VREF to change ΔVREF / IZ = 10mA mv / V in Cathode voltage ΔVZ ΔVZ = 36V ~ VREF Reference Input Current IREF R1=10KΩ, R2 =, IZ = 10mA 2 4 ua IREF Temp Deviation TA=-40 ~+85 IREF(DEV) ua R1=10KΩ, R2 =, IZ = 10mA Off state Cathode Current IZ(OFF) VREF = 0V VZ = 36V ua V V 2018/07/02 Ver.6 Page 3
4 f < 1KHZ, VZ = VREF Dynamic output impedance RZ Ω IZ = 1mA ~ 100mA Minimum Operation Current IZ(MIN) VZ = VREF ma TESTING CIRCUIT 2018/07/02 Ver.6 Page 4
5 APPLICATION CIRCUIT Shunt Regulator Single-Supply Comparator With Temperature-Compensated Threshold Precision High-Current Series Regulator 2018/07/02 Ver.6 Page 5
6 APPLICATION CIRCUIT Output Control of a Three-Terminal Fixed Regulator High-Current Shunt Regulator Precision 5-V 1.5-A Regulator 2018/07/02 Ver.6 Page 6
7 APPLICATION CIRCUIT PWM Converter With Reference Voltage Monitor Delay Timer 2018/07/02 Ver.6 Page 7
8 PERFORMANCE CHARACTERISTICS 2018/07/02 Ver.6 Page 8
9 PERFORMANCE CHARACTERISTICS 2018/07/02 Ver.6 Page 9
10 PERFORMANCE CHARACTERISTICS 2018/07/02 Ver.6 Page 10
11 SOT-23 PACKAGE OUTLINE 2018/07/02 Ver.6 Page 11
12 SOT-89 PACKAGE OUTLINE 2018/07/02 Ver.6 Page 12
13 TO-92 PACKAGE OUTLINE 2018/07/02 Ver.6 Page 13
14 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 2017 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: Fax: /07/02 Ver.6 Page 14
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