SS431 SSC | Alldatasheet
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Technical content
www.SiliconStandard.com 1 of 7 Vref Ref Cathode Anode Cathode Ref. Anode SOT-23 (Top view) SOT-89 (Top view) Cathode Reference Anode Cathode Anode Reference SS431/G Adjustable Precision Shunt Regulator PIN CONFIGURATION BLOCK DIAGRAM TO-92 (Top view) SYMBOL The SS431 is a low-voltage three-terminal adjustable shunt regulator with a guaranteed thermal stability over the applicable temperature range. The output voltage can be set to any value between VREF (approximately 2.5V) to 18V with two external resistors (see application circuit). This device has a typical output impedance of 0.2 ohms. Active output circuitry provides very sharp turn-on characteristic s, making this device an excellent replacement for Zener diodes in many applications. The SS431 is characterized for operation from 0°C to 105°C, and three package options (SOT-23, SOT-89, and TO-92) allow the designer the opportunity to select the proper package for his application. The SS431 is available with a Pb-free lead finish
DESCRIPTION
Low voltage operation (2.5V) Adjustable output voltage from VO = V REF to 18V Wide operating current range from 0.4mA to 100mA Low dynamic output impedance 0.5Ω max. ESD rating is 5.5kV (per MIL-STD 883D) Linear Regulators Adjustable Supplies Switching Power Supplies Battery Operated Computers Instrumentation Computer Disk Drives
FEATURES
APPLICATIONS
Rev.2.02 3/11/2004 - order as SS431Gxx. Pb-free lead finish available. Cathode Reference Anode
www.SiliconStandard.com 2 of 7 SS431/G Parameter Symbol Maximum Units /G04/G05/G06/G07/G08/G09/G0A/G02/G0B/G08/G0C/G06/G05/G0D/G0A/G02 /G0B/G01/G02/G02 /G01/G0E/G02 /G0B/G02 /G04/G08/G0F/G06/G10/G0F/G11/G08/G11/G12/G02/G04/G05/G06/G07/G08/G09/G0A/G02/G04/G11/G13/G13/G0A/G0F/G06/G02 /G14/G03/G01/G02/G02 /G01/G15/G16/G02 /G17/G18/G02 /G19/G0A/G1A/G0A/G13/G0A/G0F/G1B/G0A/G02/G04/G11/G13/G13/G0A/G0F/G06/G02 /G14/G03/G04/G05/G06/G02 /G01/G16/G02 /G17/G18/G02 /G1C/G1D/G0A/G13/G05/G06/G10/G0F/G0D/G02/G1E/G11/G0F/G1B/G06/G10/G08/G0F/G02/G1F/G0A/G17/G1D/G0A/G13/G05/G06/G11/G13/G0A/G02/G19/G05/G0F/G0D/G0A/G02 /G1F/G07/G02 /G01/G03/G15/G02 /G01/G02 /G20/G06/G08/G13/G05/G0D/G0A/G02/G1F/G0A/G17/G1D/G0A/G13/G05/G06/G11/G13/G0A/G02/G19/G05/G0F/G0D/G0A/G02 /G1F/G08/G09/G0A/G02 /G21/G22/G15/G02/G06/G08/G02/G01/G15/G16/G02 /G01/G02 /G1F/G07/G0A/G13/G17/G05/G0C/G02/G19/G0A/G12/G10/G12/G06/G05/G0F/G1B/G0A/G02 θ/G03/G07/G02/G02 /G01/G15/G22/G02 /G01/G02/G03/G02 /G23/G0A/G05/G09/G02/G1F/G0A/G17/G1D/G0A/G13/G05/G06/G11/G13/G0A/G02/G24/G20/G08/G0C/G09/G0A/G13/G10/G0F/G0D/G25/G02/G01/G16/G02/G12/G0A/G1B/G08/G0F/G09/G12/G02 /G1F/G0B/G05/G02/G0C/G02 /G03/G22/G16/G02 /G01/G02 /G08/G01/G0B/G19/G0B/G1A/G1B/G01/G01/G01/G01/G01 /G02/G01/G07/G01/G08/G09/G0A/G09/G07/G06 /G06 /G0A/G09/G0B/G0A/G06 /G10/G11/G07/G10/G12/G11/G0A/G01 /G0A/G09/G0B/G0A/G06/G10/G0E/G13/G14/G11/G0A/G11/G0E/G13/G0B/G06 /G01/G02/G03/G04/G05/G06/G07/G04/G01/G08/G09/G04 /G12/G13/G11/G0A/G06 /G01/G02/G03 /G04/G05/G06/G07/G03/G04/G05/G08/G09/G03/G04/G09/G04/G07/G03/G02/G03/G04/G03/G05/G03/G06/G07/G03/G08/G09/G0A/G0B/G0C/G0D/G0E/G03/G03 /G0A/G01/G02/G03/G03/G01 /G03 /G0A/G01/G02/G03/G0B/G03/G0A/G01/G02/G03/G04/G03/G03/G03/G03/G03/G03/G03/G0C/G01/G02/G03/G0B/G03/G01/G07/G0D/G0E/G03 /G0D/G0A/G03 /G0F/G10/G11/G12/G13/G14/G12/G15/G16/G03/G15/G17/G03/G18/G10/G17/G10/G18/G10/G16/G19/G10/G03 /G11/G15/G1A/G14/G13/G1B/G10/G03/G1C/G11/G10/G18/G03/G17/G1D/G1A/G1A/G03 /G14/G10/G0D/G1E/G10/G18/G13/G14/G1D/G18/G10/G03/G18/G13/G16/G1B/G10/G03 /G0A/G04/G05/G06/G07/G08/G09/G03/G03/G01 /G03 /G0A/G01/G02/G03/G0B/G03/G0A/G01/G02/G03/G04/G05/G03/G03/G03/G03/G03/G03/G03/G0C/G01/G02/G03/G0B/G03/G01/G07/G0D/G0E/G03 /G1F/G02/G03/G0B/G03/G17/G1D/G1A/G1A/G03/G18/G13/G16/G1B/G10/G03/G03/G05/G03/G04/G09/G03/G0D/G0A/G03 /G20/G13/G14/G12/G15/G03/G15/G17/G03/G19/G21/G13/G16/G1B/G10/G03/G12/G16/G03/G18/G10/G17/G10/G18/G10/G16/G19/G10/G03 /G11/G15/G1A/G14/G13/G1B/G10/G03/G14/G15/G03/G14/G21/G10/G03/G19/G21/G13/G16/G1B/G10/G03/G12/G16/G03 /G19/G13/G14/G21/G15/G22/G10/G03/G11/G15/G1A/G14/G13/G1B/G10/G03 ∆/G03/G0A /G01/G02/G03/G04 /G06/G06/G06/G06/G06/G06/G06/G06/G04 ∆/G03/G0A/G07/G08/G03 /G04/G03/G0C/G01/G02/G03/G0B/G03/G01/G07/G0D/G0E/G03 ∆/G03/G0A/G07/G08/G04/G0B/G03/G01/G07/G03/G0A/G03/G23/G03/G0A/G01/G02/G03/G03 /G03/G23/G01/G24/G05/G03/G23/G04/G24/G06/G03/G03/G0D/G0A/G25/G0A/G03/G03 /G20/G10/G17/G10/G18/G10/G16/G19/G10/G03/G19/G1D/G18/G18/G10/G16/G14/G03/G0C/G01/G02/G03/G03/G04 /G03 /G0C/G01/G02/G03/G0B/G03/G01/G07/G0D/G0E/G26/G03/G20/G01/G0B/G01/G07/G27/G01/G26/G03/G20/G04/G03/G0B/G03∞ /G03/G03/G04/G03/G05/G03 µ/G0E/G03 /G0F/G10/G11/G12/G13/G14/G12/G15/G16/G03/G15/G17/G03/G20/G10/G17/G10/G18/G10/G16/G19/G10/G03 /G19/G1D/G18/G18/G10/G16/G14/G03/G15/G11/G10/G18/G03/G17/G1D/G1A/G1A/G03/G14/G10/G0D/G1E/G10/G18/G13/G14/G1D/G18/G10/G03 /G18/G13/G16/G1B/G10/G03/G03 /G0C /G04/G05/G06/G07/G08/G09/G03/G04 /G03 /G0C/G01/G02/G03/G0B/G03/G01/G07/G0D/G0E/G26/G03/G20/G01/G0B/G01/G07/G27/G01/G26/G03/G20/G04/G03/G0B/G03∞ /G03 /G1F/G02/G03/G0B/G03/G17/G1D/G1A/G1A/G03/G18/G13/G16/G1B/G10/G03/G03/G07/G24/G05/G03/G01/G24/G04/G03µ/G0E/G03 /G28/G12/G16/G12/G0D/G1D/G0D/G03/G19/G13/G14/G21/G15/G22/G10/G03/G19/G1D/G18/G18/G10/G16/G14/G03/G03 /G17/G15/G18/G03/G18/G10/G1B/G1D/G1A/G13/G14/G12/G15/G16/G03/G0C /G09/G0A/G0B/G03/G01 /G03 /G0A/G01/G02/G03/G0B/G03/G0A/G01/G02/G03/G03/G03/G07/G24/G05/G03/G01/G03/G0D/G0E/G03 /G1C/G17/G17/G23/G29/G14/G13/G14/G10/G03/G19/G13/G14/G21/G15/G22/G10/G03/G19/G1D/G18/G18/G10/G16/G14/G03/G0C/G0C/G03/G03/G08 /G2A/G03/G0A/G01/G02/G03/G0B/G03/G01/G2B/G0A/G26/G03/G03/G03/G0A/G01/G02/G03/G04/G0B/G03/G07/G03/G03/G07/G24/G01/G03/G01/G03 µ/G0E/G03 /G0F/G2C/G16/G13/G0D/G12/G19/G03/G12/G0D/G1E/G10/G22/G13/G16/G19/G10/G03/G03/G18/G0A/G03/G01 /G03 /G0C/G01/G02/G03/G0B/G03/G01/G0D/G0E/G03/G03/G14/G15/G03/G01/G07/G07/G0D/G0E/G26/G03/G03/G0A/G01/G02/G03/G0B/G03/G0A/G01/G02/G03/G04 /G17/G03≤/G03/G01/G27/G2D/G0A/G03 /G03/G07/G24/G04/G03/G07/G24/G09/G03/G01/G03 ABSOLUTE MAXIMUM RATINGS over ambient temp. range.
ELECTRICAL CHARACTERISTICS
Rev.2.02 3/11/2004
www.SiliconStandard.com 3 of 7 SS431/G /G02/G03/G04/G05/G06/G07/G08/G01/G02/G09/G0A/G0A/G08/G0B/G04/G01 /G0C/G0D/G0E/G01 /G02/G03/G04/G05/G06/G07/G08/G01/G0C/G06/G0F/G04/G03/G10/G08/G01 /G01/G02/G03/G04/G05/G06/G07/G08/G01/G09/G0A/G0A/G07/G0B/G03/G08/G0C/G0D/G0E/G0F/G08 /G02/G11/G12/G13/G14/G15/G16/G01/G0C/G14/G17/G12/G11/G18/G16/G01/G19/G0C/G1A/G01 /G01/G02/G03/G03 /G01/G04/G05 /G01/G05/G03 /G01/G06/G05 /G03 /G06/G05 /G05/G03 /G04/G05 /G02/G03/G03 /G02/G06/G05 /G02/G05/G03 /G01 /G06/G01/G02/G03/G02/G06/G07 /G01 /G01/G02/G03/G04/G03/G05/G06/G07/G08 /G09/G02/G03/G04/G03/G0A/G0B/G02/G03 /G01/G02/G03/G04 /G01/G02/G03/G05 /G01/G02/G06/G04 /G01/G02/G06/G05 /G01/G05/G04/G04 /G01/G05/G04/G05 /G01/G05/G07/G04 /G01/G05/G07/G05 /G01/G05/G01/G04 /G08/G01/G04/G04/G01/G04/G02/G04/G09/G04/G03/G04/G07/G04/G04/G07/G01/G04 /G01/G01/G02/G03/G02/G01/G03/G04/G05 /G06/G01/G02/G07/G02/G08/G09/G0A/G0B /G0A/G08/G1B/G08/G0A/G08/G0B/G02/G08/G01/G0C/G06/G0F/G04/G03/G10/G08/G01 /G0C/G0D/G0E/G01 /G1C/G09/G0B/G02/G04/G1D/G06/G0B/G01/G04/G08/G1E/G1F/G08/G0A/G03/G04/G09/G0A/G08/G01 /G10/G07/G11/G07/G0A/G07/G0B/G12/G07/G08/G13/G05/G14/G03/G02/G15/G07/G08/G0C/G0D/G13/G0F/G08 /G1C/G20/G21/G22/G12/G23/G14/G21/G01/G04/G16/G24/G25/G16/G26/G11/G12/G20/G26/G16/G01/G19/G01/G01/G02/G1A/G01 /G01 /G01/G02/G03 /G04 /G04/G02/G03 /G05 /G05/G02/G03 /G06 /G07/G05/G01/G01/G05/G01/G08/G01/G09/G01/G0A/G01/G04/G01/G01/G04/G05/G01 /G01/G02/G03/G04/G03/G02/G05/G06/G0B /G01/G07/G03/G04/G03/G0C /G08/G01/G02/G03/G04/G02/G05/G09/G0A /G0A/G08/G1B/G08/G0A/G08/G0B/G02/G08/G01/G1D/G0B/G1F/G09/G04/G01/G02/G09/G0A/G0A/G08/G0B/G04/G01 /G0C/G0D/G0E/G01 /G1C/G09/G0B/G02/G04/G1D/G06/G0B/G01/G04/G08/G1E/G1F/G08/G0A/G03/G04/G09/G0A/G08/G01 /G10/G07/G11/G07/G0A/G07/G0B/G12/G07/G08/G01/G09/G0A/G0A/G07/G0B/G03/G08/G0C/G16/G0E/G0F/G08 /G1C/G20/G21/G22/G12/G23/G14/G21/G01/G04/G16/G24/G25/G16/G26/G11/G12/G20/G26/G16/G01/G19/G01/G01/G02/G1A/G01 /G02/G03/G04/G05/G06/G07/G08/G01/G02/G09/G0A/G0A/G08/G0B/G04/G01 /G0C/G0D/G0E/G01 /G02/G03/G04/G05/G06/G07/G08/G01/G0C/G06/G0F/G04/G03/G10/G08/G01 /G01/G02/G03/G04/G05/G06/G07/G08/G01/G09/G0A/G0A/G07/G0B/G03/G08/G0C/G16/G0E/G0F/G08 /G02/G11/G12/G13/G14/G15/G16/G01/G0C/G14/G17/G12/G11/G18/G16/G01/G19/G0C/G1A/G01 /G08/G01/G04/G04 /G04 /G01/G04/G04 /G02/G04/G04 /G09/G04/G04 /G03/G04/G04 /G08 /G07/G04/G07/G01/G0A /G01/G17/G15/G02/G03/G02/G01/G04/G05/G06 /G07/G15/G02/G03/G02/G08/G09/G13/G0A TYPICAL PERFORMANCE CHARACTERISTICS Rev.2.02 3/11/2004
www.SiliconStandard.com 4 of 7 SS431/G /G01 /G0D/G01/G02/G03 /G01/G02/G03/G04/G05 /G0E/G0D /G01/G0E/G0D /G0A/G01/G02 /G0A/G0B/G0C/G0D /G0E/G0F/G10/G11/G12 /G0E/G01/G02 /G0E/G0B/G0C/G0D /G0E/G0F /G0E/G10 /G0D/G01/G02/G11/G0D/G01/G02/G03/G04/G12/G0F/G13/G04/G0E/G0F/G14/G0E/G10/G04/G15/G04/G13/G04/G16/G01/G02/G03/G04/G17/G04/G0E/G0F /G01/G01/G02/G03/G04/G05 /G01/G02 /G01/G02/G03/G03 /G02/G03/G04/G05/G01/G06/G07/G08/G09/G0A/G07/G05/G01/G0B/G0C/G01 /G0D/G0A/G08/G04/G0E/G01/G0D/G08/G03/G0F/G01 /G02/G03/G04/G05/G01/G06/G07/G08/G09/G0A/G07/G05/G01/G10/G0C/G01 /G0D/G0A/G08/G04/G04/G11/G01/G0D/G08/G03/G0F/G01 /G02/G03/G04/G05/G01/G06/G07/G08/G09/G0A/G07/G05/G01/G12/G0C/G01 /G13/G0F/G0F/G01/G14/G05/G15/G05/G03/G01/G06/G0A/G08/G08/G03/G16/G05/G01
APPLICATION INFORMATION
VDEV = VMAX-VMIN VMIN TEMPERATURE Deviation of reference input voltage, V DEV, is defined as the maximum variation of the reference input voltage over the full temperature range. The average temperature coefficient of the reference in- put voltage, α VREF is defined as: T1 T2 C)25 (atV V T1 T2 610 C)25 (atV V-V C ppmV REF DEV REF MINMAX REF =°Δ Where: T2− T1=full temperature change. α VREF can be positive or negative depending on whether the slope is positive or negative. Example: VDEV= 7.0mV, VREF= 2495mV, T2− T1= 105°C, slope is negative. C27ppm/V C105 610 2495mV 7.0mV REF °− = = °a Note 4. The dynamic output impedance, Rz, is de- fined as: RZ = Z ZV IΔ Δ When the device is programmed with two external r e- sistors, R1 and R2, (see Fig. 2), the dynamic output impedance of the overall circuit, is defined as: [ ] R11RzI Vzr +≅Δ Rev.2.02 3/11/2004
www.SiliconStandard.com 5 of 7 R1A R2A R2B R1B VIN Output turns ON when Low Limit <VIN < High Limit + VBE SS431 SS431 R4 R5 Low Limit≅ VREF ( 1+ R1B/ R2B )+ VBE High Limit ≅ VREF ( 1+ R1A/ R2A ) Over-Voltage/Under-Voltage Protection Circuit RCL IOUT VIN SS431 R VIN S SS431 IOUT=VREF/ RCL IOUT=VREF /RS Current Limiter or Current Source Constant-Current Sink VOUT VIN SS431 RIN VIN VOUT FUSE SS431 VOUT ≅ (1+R1/R2) x VREF VLIMIT ≅ (1+R1/R2) x VREF Higher-Current Shunt Regulator Crow Bar APPLICATION EXAMPLES SS431/G Rev.2.02 3/11/2004
www.SiliconStandard.com 6 of 7 SS431/G PHYSICAL DIMENSIONS SOT-23 SOT-89 /G01 /G02/G03 /G02 /G01 /G01/G02 /G04 /G04/G03 /G05 /G05/G03 /G05/G06/G05/G07 /G01 /G1C/G1D/G1E/G1F/G20/G21/G1E/G22/G11/G11/G20/G1E/G1E/G0A/G23 /G0A /G24/G25/G0F/G24/G24/G25/G15/G24/G24/G25/G14/G24 /G0A/G0E /G26/G26 /G24/G25/G24/G24 /G26/G26 /G0A/G0F /G26/G26 /G24/G25/G0E/G24 /G26/G26 /G0A/G15 /G24/G25/G27/G24/G24/G25/G28/G24/G24/G25/G29/G24 /G12/G0E /G24/G25/G15/G24/G24/G25/G14/G24/G24/G25/G2A/G24 /G07 /G0E/G25/G27/G24/G0F/G25/G24/G24/G0F/G25/G15/G24 /G12 /G0F/G25/G28/G24/G0F/G25/G29/G24/G15/G25/G24/G24 /G2B /G0F/G25/G0F/G2A/G0F/G25/G2A/G24/G0F/G25/G27/G2A /G2B/G0E /G0E/G25/G14/G24/G0E/G25/G2A/G24/G0E/G25/G2C/G24 /G21 /G0F/G25/G0F/G2A/G0F/G25/G2A/G24/G0F/G25/G27/G2A /G21/G0E /G0E/G25/G14/G24/G0E/G25/G2A/G24/G0E/G25/G2C/G24 /G01 /G26/G26 /G0F/G07 /G26/G26 /G01/G02 /G03/G02 /G04/G02 /G05/G02 /G02/G02/G02/G06/G02 /G07/G02 /G08/G02 /G09/G02 /G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G05/G13/G14/G15/G16/G01/G16/G17/G17/G01 /G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G05/G13/G14/G15/G16/G01/G16/G17/G17/G01 /G02/G03/G04/G05/G06/G07/G01/G04/G08/G09/G01 /G04/G0A/G0B/G01 /G0A/G01/G0C/G0D/G0C/G0E/G01/G0C/G0D/G0F/G0E/G01 /G05/G01/G0C/G0D/G0E/G10/G01/G0C/G0D/G11/G10/G01 /G12/G01/G13/G0D/G10/G0E/G01/G13/G0D/G14/G0E/G01 /G15/G01/G11/G0D/G0C/G0E/G01/G11/G0D/G0F/G0E/G01 /G16/G01/G0E/G0D/G17/G13/G01/G0E/G0D/G0C/G0F/G01 /G18/G01/G13/G0D/G0C/G19/G01/G13/G0D/G10/G11/G01 /G1A/G01/G11/G0D/G1B/G0F/G01/G17/G0D/G0E/G0C/G01 /G1C/G01/G13/G0D/G0C/G0E/G01/G13/G0D/G0F/G0E/G01 /G08/G01/G0E/G0D/G17/G10/G01/G0E/G0D/G0C/G13/G01 Rev.2.02 3/11/2004
www.SiliconStandard.com 7 of 7 Information furnished by Silicon Standard Corporation is believed to be accurate and reliable. However, Silicon Standard Corporation makes no guarantee or warranty, expre ss or implied, as to the reliability, accuracy, timeliness or completeness of such information and assumes no responsibility for its use, or for infringement of any patent or other intellectual property rights of third parties that may result from its use. Silicon Standard reserves the right to make changes as it deems necessary to any products described herein for any reason, including without limitation enhancement in reliability, functionality or design. No license is granted, whether expressly or by implication, in relation to the use of any products described herein or to the use of any information provided herein, under any patent or other intellectual property rights of Silicon Standard Corporation or any third parties. SS431/G PHYSICAL DIMENSIONS TO-92
ORDERING INFORMATION
/G01 /G01 /G01 /G02 /G03 /G02/G03/G01/G04/G05/G06/G07 /G08/G09/G01/G06/G03 /G0A /G0B /G0B/G0C /G01/G02/G03/G04/G05/G06/G03/G07/G08/G08/G05/G03/G03/G09/G0A /G09/G0B/G0C/G0D/G0E/G0B/G0C/G0E/G0F/G0B/G0C/G0F/G0F /G09/G10/G10/G0C/G11/G11/G10/G0C/G0B/G10/G0C/G0B/G12 /G13/G14/G15/G0C/G0B/G16/G14 /G17/G10/G0D/G0C/G11/G12/G0D/G0C/G0E/G11/G0D/G0C/G12/G16 /G17/G0D/G0C/G10/G0D/G0D/G0C/G11/G18/G0D/G0C/G0D/G0E /G19/G0D/G0C/G0B/G11/G0D/G0C/G0E/G12/G0D/G0C/G16/G0B /G1A/G14/G10/G0C/G11/G12/G14 /G06/G10/G11/G0C/G18/G16/G10/G0B/G0C/G0D/G18/G10/G0D/G0C/G15/G15 /G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G01/G05/G13/G14/G15/G16/G01/G17/G17/G01 Bandgap tolerance B = 1% Package type N = SOT-23-3 T = TO-92 G = SOT-89 Lead finish option: G for Pb-free lead finish TR: Tape and Reel Packing Example: SS431GNBTR SS431 with 1% tolerance in SOT-23-3 with pb-free lead SS431(G)xBxx Rev.2.02 3/11/2004 finish shipped on tape and reel