ST432

ST432 STANSON | Alldatasheet

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Technical content

Adjustable Precision Shunt Regulator STANSON TECHNOLOGY

120 Bentley Square, Mountain View, Ca 94040 USA

http://www.stansontech.com ST432 2007. V1

DESCRIPTION

ST432 is low-voltage three-te rminal 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 Ω. 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. Drivers augmentation PIN CONFIGURATION SOT-23 TO-92 SOT-23-5L SOT-353 ( SC-70 ) PART MARKING SOT-23 TO-92 SOT-23-5L SOT-353 ( SC-70 )

FEATURES

z Low-Voltage Operation down to 1.24 V z Adjustable Output Voltage, V OUT= Vref to 20 V z Low Operational Cathode Current 80uA z 0.25Ω Typical Output Impedance

APPLICATIONS

Adjustable Precision Shunt Regulator STANSON TECHNOLOGY http://www.stansontech.com ST432 2007. V1 PIN DESCRIPTION Pin Symbol Description

1 R REF

2 C CATHODE

3 A 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

Adjustable Precision Shunt Regulator STANSON TECHNOLOGY http://www.stansontech.com ST432 2007. V1 TYPICAL APPLICATION CIRCUIT BLOCK DIAGRAM ABSOULTE MAXIMUM RATINGS (TA=25Ċ unless otherwise specified) Parameter Symbol Value Unit Cathode Voltage V Z 20 V Continuous Cathode Current I Z 100 mA Reference Current I REF 3 mA Operation Junction Temperature Range T J -40 ~ +150 Ċ Storage Temperature Range T STG -65 ~ +150 Ċ Lead Temperature Range (Soldering 10sec.) TSOL 260 Ċ TO-92 140 SOT-23 206 SOT-23-5L 206 Thermal Resistance ӨJA SOT-353 252 Ċ/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.

Adjustable Precision Shunt Regulator STANSON TECHNOLOGY http://www.stansontech.com ST432 2007. V1 ELECTRICAL CHARACTERISTICS (TA=25Ċ, unless otherwise specified) SP432AS23RG & SP432AS25RG & SP432AS35RG Parameter Symbol Conditions Min. Typ. Max. Unit TA=25Ċ 1.234 1.24 1.246 Reference Voltage for 432A V REF VZ = VREF IZ = 10mA TA=-40Ċ~+80Ċ 1.222 1.258 V TA=25Ċ 1.228 1.24 1.252 Reference Voltage for 432B V REF VZ = VREF IZ = 10mA TA=-40Ċ~+80Ċ 1.215 1.265 V VREF Temp Deviation V DEV TA=-40Ċ~+80Ċ VZ = VREF , IZ = 10mA 10 25 mV Ratio of change in V REF to change in Cathode voltage ∆VREF / ∆VZ IZ = 10mA ∆VZ = 16V ~ VREF -1.0 -2.7 mV/ V Reference Input Current I REF R1=10K Ω, R2= ∞,IZ= 10mA 0.15 0.5 uA IREF Temp Deviation I REF(DEV) TA=-40Ċ~+80Ċ R1=10KΩ,R2=∞, IZ = 10mA 0.1 0.4 uA VZ = 6V Off state Cathode Current I Z(OFF) V REF = 0V VZ = 12V 0.5 1.0 uA Dynamic output impedance R Z f < 1KHZ , VZ = VREF IZ = 1mA ~ 100mA 0.25 0.4 Ω Minimum Operation Current IZ(MIN) V Z = VREF 30 80 uA APPLICATION CIRCUIT

Adjustable Precision Shunt Regulator STANSON TECHNOLOGY http://www.stansontech.com ST432 2007. V1 APPLICATION CIRCUIT To improve the stability of output voltage, a 0.1uf capacitor is recommended between cathodes to anode

Adjustable Precision Shunt Regulator STANSON TECHNOLOGY http://www.stansontech.com ST432 2007. V1 PERFORMANCE CHARACTERISTICS

Adjustable Precision Shunt Regulator STANSON TECHNOLOGY http://www.stansontech.com ST432 2007. V1 PERFORMANCE CHARACTERISTICS

Adjustable Precision Shunt Regulator STANSON TECHNOLOGY http://www.stansontech.com ST432 2007. V1 PERFORMANCE CHARACTERISTICS

Adjustable Precision Shunt Regulator STANSON TECHNOLOGY http://www.stansontech.com ST432 2007. V1 PERFORMANCE CHARACTERISTICS

Adjustable Precision Shunt Regulator STANSON TECHNOLOGY http://www.stansontech.com ST432 2007. V1 SOT-23 PACKAGE OUTLINE

Adjustable Precision Shunt Regulator STANSON TECHNOLOGY http://www.stansontech.com ST432 2007. V1 SOT-23-5L PACKAGE OUTLINE

Adjustable Precision Shunt Regulator STANSON TECHNOLOGY http://www.stansontech.com ST432 2007. V1 TO-92 PACKAGE OUTLINE

Adjustable Precision Shunt Regulator STANSON TECHNOLOGY http://www.stansontech.com ST432 2007. V1 SOT-353 PACKAGE OUTLINE