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| Adjustable Precision Shunt Regulator ST432 DESCRIPTION ST432 is low-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 (1.24V) and 20V with two external resistors. These devices have a typical output impedance of 0.25. Active output circuitry provides a very sharp turn-on characteristic, making the ST432 excellent replacements for low-voltage Zener diodes in many applications, including onboard regulation and adjustable power supplies. FEATURES Low-Voltage Operation down to 1.24 V Drivers augmentation Voltage, VOUT= Vref Adjustable Output to 20 V Low Operational Cathode Current 80uA 0.25 Typical Output Impedance PIN CONFIGURATION SOT-23 TO-92 SOT-23-5L SOT-353 ( SC-70 ) APPLICATIONS Battery Power Equipment Linear Regulators Switch Power Supply Cellular Phone Digital Camera Computer Disk PART MARKING SOT-23 TO-92 SOT-23-5L SOT-353 ( SC-70 ) STANSON TECHNOLOGY 120 Bentley Square, Mountain View, Ca 94040 USA http://www.stansontech.com ST432 2007. V1 Adjustable Precision Shunt Regulator ST432 PIN DESCRIPTION Pin 1 2 3 Symbol R C A Description REF CATHODE ANODE ORDERING INFORMATION Part Number Voltage Tolerance Package Part Marking ST432AS23RG 0.5% SOT-23 32AYW ST432BS23RG 1.0% SOT-23 32BYW ST432AS25RG 0.5% SOT-23-5L 32AYW ST432BS25RG 1.0% SOT-23-5L 32BYW ST432BT92AG 1.0% TO-92 SP432B ST432AS35RG 0.5% SOT-353 32AYW ST432BS35RG 1.0% SOT-353 32BYW Week Code : A ~ Z ( 1 ~ 26 ) ; a ~ z ( 27 ~ 52 ) ST432XS23RG : X: Tolerance; R: Tape Reel; A: Tape Ammo; G: Pb - Free STANSON TECHNOLOGY 120 Bentley Square, Mountain View, Ca 94040 USA http://www.stansontech.com ST432 2007. V1 Adjustable Precision Shunt Regulator ST432 TYPICAL APPLICATION CIRCUIT BLOCK DIAGRAM ABSOULTE MAXIMUM RATINGS (TA=25 Parameter Cathode Voltage Continuous Cathode Current Reference Current Operation Junction Temperature Range Storage Temperature Range Lead Temperature Range (Soldering 10sec.) Thermal Resistance JA unless otherwise specified) Symbol VZ IZ IREF TJ TSTG TSOL TO-92 SOT-23 SOT-23-5L SOT-353 Value 20 100 3 -40 ~ +150 -65 ~ +150 260 140 206 206 252 /W Unit V mA mA 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. STANSON TECHNOLOGY 120 Bentley Square, Mountain View, Ca 94040 USA http://www.stansontech.com ST432 2007. V1 Adjustable Precision Shunt Regulator ST432 ELECTRICAL CHARACTERISTICS (TA=25 Parameter Symbol , unless otherwise specified) Min. 1.234 1.222 1.228 1.215 Typ. Max. Unit 1.24 1.246 V 1.258 1.24 1.252 V 1.265 10 -1.0 0.15 0.1 0.5 0.25 30 25 -2.7 0.5 0.4 1.0 0.4 80 mV mV/ V uA uA uA uA SP432AS23RG & SP432AS25RG & SP432AS35RG Conditions VZ = VREF TA=25 Reference Voltage for 432A VREF IZ = 10mA TA=-40 ~+80 VZ = VREF TA=25 Reference Voltage for 432B VREF IZ = 10mA TA=-40 ~+80 TA=-40 ~+80 VREF Temp Deviation VDEV VZ = VREF , IZ = 10mA Ratio of change in VREF to VREF / IZ = 10mA change in Cathode voltage VZ VZ = 16V ~ VREF Reference Input Current IREF Temp Deviation Off state Cathode Current Dynamic output impedance Minimum Operation Current IREF IREF(DEV) IZ(OFF) RZ IZ(MIN) R1=10K, R2= ,IZ= 10mA TA=-40 ~+80 R1=10K,R2=, IZ = 10mA VZ = 6V VREF = 0V VZ = 12V f < 1KHZ , VZ = VREF IZ = 1mA ~ 100mA VZ = VREF APPLICATION CIRCUIT STANSON TECHNOLOGY 120 Bentley Square, Mountain View, Ca 94040 USA http://www.stansontech.com ST432 2007. V1 Adjustable Precision Shunt Regulator ST432 APPLICATION CIRCUIT To improve the stability of output voltage, a 0.1uf capacitor is recommended between cathodes to anode STANSON TECHNOLOGY 120 Bentley Square, Mountain View, Ca 94040 USA http://www.stansontech.com ST432 2007. V1 Adjustable Precision Shunt Regulator ST432 PERFORMANCE CHARACTERISTICS STANSON TECHNOLOGY 120 Bentley Square, Mountain View, Ca 94040 USA http://www.stansontech.com ST432 2007. V1 Adjustable Precision Shunt Regulator ST432 PERFORMANCE CHARACTERISTICS STANSON TECHNOLOGY 120 Bentley Square, Mountain View, Ca 94040 USA http://www.stansontech.com ST432 2007. V1 Adjustable Precision Shunt Regulator ST432 PERFORMANCE CHARACTERISTICS STANSON TECHNOLOGY 120 Bentley Square, Mountain View, Ca 94040 USA http://www.stansontech.com ST432 2007. V1 Adjustable Precision Shunt Regulator ST432 PERFORMANCE CHARACTERISTICS STANSON TECHNOLOGY 120 Bentley Square, Mountain View, Ca 94040 USA http://www.stansontech.com ST432 2007. V1 Adjustable Precision Shunt Regulator ST432 SOT-23 PACKAGE OUTLINE STANSON TECHNOLOGY 120 Bentley Square, Mountain View, Ca 94040 USA http://www.stansontech.com ST432 2007. V1 Adjustable Precision Shunt Regulator ST432 SOT-23-5L PACKAGE OUTLINE STANSON TECHNOLOGY 120 Bentley Square, Mountain View, Ca 94040 USA http://www.stansontech.com ST432 2007. V1 Adjustable Precision Shunt Regulator ST432 TO-92 PACKAGE OUTLINE STANSON TECHNOLOGY 120 Bentley Square, Mountain View, Ca 94040 USA http://www.stansontech.com ST432 2007. V1 Adjustable Precision Shunt Regulator ST432 SOT-353 PACKAGE OUTLINE STANSON TECHNOLOGY 120 Bentley Square, Mountain View, Ca 94040 USA http://www.stansontech.com ST432 2007. V1 |
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