SPX432

Precision Adjustable Shunt Regulator

Overview

Information Precision Adjustable Shunt Regulator
Package SOT23-3, TO92-3
Temperature Range (°C) 0 to 105
Reference Voltage Adjustable, Fixed
VOUT (V) -
VOUT Adj MIN (V) 1.24
VOUT Adj MAX (V) 18
Operating Current (MAX) (mA) 80
Operating Current (MIN) (mA) 1
IQ (µA) 1000
Initial Accuracy (%) 1.0
IREF (µA) 3
Temperature Coefficient (ppm/°C) 50
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The SPX432 is a 3-terminal adjustable shunt voltage regulator providing a highly accurate 1.24V bandgap reference with 0.5% tolerance. The SPX432’s thermal stability, wide operating current (80mA) and temperature range (0°C to 105°C) makes it suitable for a variety of applications. SPX432 tolerance of 0.5% is proven to be sufficient to overcome all of the other errors in the system to virtually eliminate the need for trimming in the power supply manufactures’ assembly lines and contribute a significant cost savings.

 
The SPX432 is an ideal voltage reference in an isolated feedback circuit for switch mode power supplies. SPX432 offers many advantages over the TLV431 such as wider output voltage (18V vs. 6V), higher output current (80mA vs. 15mA) and a wider operating temperature range with a tighter tolerance down to 0.5%. 

  • Low Voltage Operation, 1.24V 
  • Trimmed Bandgap to 0.5% and 1%
  • Wide Operating Current, 1mA to 80mA
  • Adjustable Output Voltage, VREF to 18V
  • Extended Temp. Range: 0°C to 105°C
  • Low Temperature Coefficient, 50 ppm/°C
  • Offered in TO-92, SOIC, SOT-23-3
  • Replacement for TLV431, AS432

  • Switching Power Supplies
  • Adjustable Supplies
  • Error Amplifiers
  • Single Supply Amplifier
  • Monitors / VCRs / TVs
  • Personal Computers
  • Voltage References

Documentation & Design Tools

Type Title Version Date File Size
Data Sheets SPX432 1.24V Precision Adjustable Shunt Regulator 1.0.0 December 2006 139.4 KB
Application Notes AN200, Downloading and Installing CAD Symbols and Footprints with Ultra Librarian April 2019 1.2 MB
Product FAQs SPX432 FAQ 1.0.0 March 2007 165 KB
Product Brochures Power Management Brochure October 2020 2.4 MB
Symbols & Footprints SPX432M-L/TR CAD File (.bxl) September 2018 60.1 KB
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Quality & RoHS

Part Number RoHS | Exempt RoHS Halogen Free REACH TSCA MSL Rating / Peak Reflow Package
SPX432M-L/TR N Y Y Y Y L1 / 260ᵒC SOT-23-3

Click on the links above to download the Certificate of Non-Use of Hazardous Substances.

Additional Quality Documentation may be available, please Contact Support.

Parts & Purchasing

Part Number Pkg Code Min Temp Max Temp Status Suggested Replacement Buy Now Order Samples PDN
SPX432AM SOT-23-3 0 105 OBS
SPX432AM/TR SOT-23-3 0 105 OBS
SPX432AM1 SOT-89-3 OBS
SPX432AM1/TR SOT-89-3 OBS
SPX432AM1-L SOT-89-3 OBS
SPX432AM5 SOT-23-5 OBS
SPX432AM5/TR SOT-23-5 OBS
SPX432AM5-L SOT-23-5 OBS
SPX432AM-L SOT-23-3 0 105 OBS SPX432AM-L/TR
SPX432AM-L/TR SOT-23-3 0 105 OBS SPX432M-L/TR
SPX432AN TO-92-3 OBS
SPX432AN/TR TO-92-3 0 105 OBS
SPX432AN-L TO-92-3 0 105 OBS SPX432N-L
SPX432AN-L/TR TO-92-3 0 105 OBS SPX432N-L/TR
SPX432AS NSOIC8 OBS
SPX432AS/TR NSOIC8 OBS
SPX432AS-L NSOIC8 OBS
SPX432AS-L/TR NSOIC8 OBS
SPX432M SOT-23-3 0 105 OBS
SPX432M/TR SOT-23-3 0 105 OBS
SPX432M1 SOT-89-3 OBS
SPX432M1/TR SOT-89-3 OBS
SPX432M1-L SOT-89-3 OBS
SPX432M5 SOT-23-5 OBS
SPX432M5/TR SOT-23-5 OBS
SPX432M5-L SOT-23-5 OBS
SPX432M-L SOT-23-3 0 105 OBS SPX432M-L/TR
SPX432M-L/TR SOT-23-3 0 105 Active Order
SPX432N TO-92-3 0 105 OBS
SPX432N/TR TO-92-3 OBS
SPX432N-L TO-92-3 0 105 OBS SPX432M-L/TR
SPX432N-L/TR TO-92-3 0 105 OBS SPX432M-L/TR
SPX432S NSOIC8 OBS
SPX432S/TR NSOIC8 OBS
SPX432S-L NSOIC8 0 105 OBS
SPX432S-L/TR NSOIC8 OBS
Show obsolete parts
Part Status Legend
Active - the part is released for sale, standard product.
EOL (End of Life) - the part is no longer being manufactured, there may or may not be inventory still in stock.
CF (Contact Factory) - the part is still active but customers should check with the factory for availability. Longer lead-times may apply.
PRE (Pre-introduction) - the part has not been introduced or the part number is an early version available for sample only.
OBS (Obsolete) - the part is no longer being manufactured and may not be ordered.
NRND (Not Recommended for New Designs) - the part is not recommended for new designs.

Packaging

Pkg Code Details Quantities Dimensions PDF
NSOIC8
  • JEDEC Reference: MS-012
  • MSL Pb-Free: L1 @ 260ºC
  • MSL SnPb Eutectic: n/a
  • ThetaJA: 128.4ºC/W (std); 96.8ºC/W (fused)
  • Bulk Pack Style: Tube
  • Quantity per Bulk Pack: 98
  • Quantity per Reel: 2500
  • Quantity per Tube: 98
  • Quantity per Tray: n/a
  • Reel Size (Dia. x Width x Pitch): 330 x 12 x 8
  • Tape & Reel Unit Orientation: Quadrant 1
  • Dimensions: mm
  • Length: 4.90
  • Width: 3.90
  • Thickness: 1.75
  • Lead Pitch: 1.27
SOT-23-3
  • JEDEC Reference: TO-236
  • MSL Pb-Free: L1 @ 260ºC
  • MSL SnPb Eutectic: n/a
  • ThetaJA: n/a
  • Bulk Pack Style: Canister
  • Quantity per Bulk Pack: n/a
  • Quantity per Reel: 3000
  • Quantity per Tube: n/a
  • Quantity per Tray: n/a
  • Reel Size (Dia. x Width x Pitch): 180 x 8 x 4
  • Tape & Reel Unit Orientation: Single Pin at sprocket hole.
  • Dimensions: mm
  • Length: 2.90
  • Width: 1.30
  • Thickness: 1.12
  • Lead Pitch: 0.95
SOT-23-5
  • JEDEC Reference: MO-178
  • MSL Pb-Free: L1 @ 260ºC
  • MSL SnPb Eutectic: n/a
  • ThetaJA: 191ºC/W
  • Bulk Pack Style: Canister
  • Quantity per Bulk Pack: n/a
  • Quantity per Reel: 3000
  • Quantity per Tube: n/a
  • Quantity per Tray: n/a
  • Reel Size (Dia. x Width x Pitch): 180 x 8 x 12
  • Tape & Reel Unit Orientation: 3 Pins at sprocket hole.
  • Dimensions: mm
  • Length: 2.90
  • Width: 1.60
  • Thickness: 1.45
  • Lead Pitch: 0.95
SOT-89-3
  • JEDEC Reference: TO-243
  • MSL Pb-Free: L2 @ 260ºC
  • MSL SnPb Eutectic: n/a
  • ThetaJA: 107.1ºC/W
  • Bulk Pack Style: Canister
  • Quantity per Bulk Pack: n/a
  • Quantity per Reel: 2500
  • Quantity per Tube: n/a
  • Quantity per Tray: n/a
  • Reel Size (Dia. x Width x Pitch): 330 x 12 x 8
  • Tape & Reel Unit Orientation: Tab at sprocket hole.
  • Dimensions: mm
  • Length: 4.60 max
  • Width: 2.60 max
  • Thickness: 1.60
  • Lead Pitch: 1.50
TO-92-3
  • JEDEC Reference: n/a
  • MSL Pb-Free: n/a
  • MSL SnPb Eutectic: n/a
  • ThetaJA: 131.9ºC/W
  • Bulk Pack Style: Ammo
  • Quantity per Bulk Pack: n/a
  • Quantity per Reel: 2000
  • Quantity per Tube: n/a
  • Quantity per Tray: n/a
  • Reel Size (Dia. x Width x Pitch): Ammo
  • Tape & Reel Unit Orientation: Ammopack
  • Dimensions: inch
  • Length: 0.195 max
  • Width: 0.195 max
  • Thickness: 0.155 max
  • Lead Pitch: 0.055

Notifications

Distribution Date Description File
02/16/2018 Standard tape and reel quantity will change from 2500 pieces to 3000 pieces for SOT23-3L/5L/6L. Addendum: Remove SOT-89 parts from affected products list.
07/11/2017 Product Discontinuation Notification
04/12/2017 Qualification of alternate assembly subcon, JCET.
01/12/2017 Standard tape and reel quantity will change from 2500 pieces to 3000 pieces for SOT23-3L/5L/6L.
07/26/2016 Product discontinuation notification. Discontinued.
01/13/2014 Qualification of an alternate qualified 3L TO-92 production site, Greatek, Taiwan, in addition to the current production site, Carsem, Malaysia. Alternate assembly site.
07/30/2013 Addition of an alternate qualified assembly supplier, Carsem (Malaysia) for SOT23 package using copper wire bonding. Material Change.
12/14/2009 Material Change. Use environmental friendly Green (halogen free) material and also for standardization.
03/04/2009 Notice of Obsolescence Discontinued by Exar Corporation due to low market demand
02/28/2007 Product Obsolescence Letter and Discontinuation Notification. Discontinued.
02/02/2006 Announcing transfer of certain Power Management and Interface Products from Hillview fabrication facility to wafer foundary BCD. See attached Product List Power Management and Interface products as listed are being transfer to external wafer foundry, due to cessation of operations of the sipex Hillview Fabrication manufacturing site
12/22/2004 Sipex has qualified CET to perform assembly operation fot the SOT23 -3 L package. Some of the CET SOT23 3 L pkg. dimensions are slightly different than the Jedec To-236 Variation AB std. Improve manufacturability

FAQs & Support

Search our list of FAQs for answers to common technical questions.
For material content, environmental, quality and reliability questions review the Quality tab or visit our Quality page.
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Type the part into the search, and click on one of the part numbers from the drop down menu. Then you can look for the Product Discontinuation Notice, which generally is at the top of the list, for example:

 
 
 

If you see this, it tells you that this particular orderable part has been discontinued and when the last order date is, or was. If you click on the file, then you can view the notice we sent about this if you purchased the part in the recent past. It may also advise of a replacement part. When an orderable part first becomes discontinued, Product Discontinuation Notices are sent are sent to those who have purchased the parts in the recent past, if purchased directly, with a dated opportunity to place a last order.