SPX3819

500mA Low-Noise LDO Voltage Regulator
Data Sheets Active
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Overview

Information 500mA Low-Noise LDO Voltage Regulator
Output Option Adjustable, Fixed
VOUT (V) 1.2, 1.5, 1.8, 2.5, 3.0, 3.3, 5.0, Adj
VOUT Adj MIN (V) 1.235
VOUT Adj MAX (V) 15.45
IOUT (mA) 500
VIN MIN (V) 2.5
VIN MAX (V) 16
IQ (µA) 90
Accuracy (%) 1%
Vdrop (mV) 340
Output Noise (µVRMS) 40
PSRR (dB) 70
Junction Temp Range (°C) -40 to 125
Package SOT23-5, DFN-8, NSOIC-8
Features Enable,Reverse battery protection,Current limit and thermal protection
Show more

The SPX3819 is a positive voltage regulator with a low dropout voltage and low noise output. In addition, this device offers a very low ground current of 800μA at 100mA output. The SPX3819 has an initial tolerance of less than 1% max and a logic compatible on/off switched input. When disabled, power consumption drops to nearly zero. Other key features include reverse battery protection, current limit and thermal shutdown. The SPX3819 includes a reference bypass pin for optimal low noise output performance. With its very low output temperature coefficient, this device also makes a superior low power voltage reference.

The SPX3819 is an excellent choice for use in battery powered applications such as cordless telephones, radio control systems and portable computers. It is available in several fixed output voltage options or with an adjustable output voltage.

This device is offered in 8-pin NSOIC, 8-pin DFN and 5-pin SOT-23 packages.

  • Low noise: 40µV possible
  • High accuracy: 1%
  • Reverse battery protection
  • Low dropout: 340mV at full load
  • Low quiescent current: 90µA
  • Zero off-mode current
  • Fixed output: 1.2V, 1.5V, 1.8V, 2.5V, 3.0V, 3.3V, 5.0V
  • 5-pin SOT-23, 8-pin nSOIC and 8-pin 2 x 3 DFN packages

Documentation & Design Tools

All Types Data Sheets Application Notes Product Briefs & Brochures Symbols & Footprints
Type Title Version Date File Size
Data Sheets SPX3819 500mA Low-Noise LDO Voltage Regulator REV 2.0.5 January 2020 1.2 MB
Application Notes AN200, Downloading and Installing CAD Symbols and Footprints with Ultra Librarian April 2019 1.2 MB
Application Notes ANP-02, Thermal Considerations for Linear Regulators A November 2006 351 KB
Product Flyers Power Management & Interface Products for Cable, Satellite and IP STB/Home Gateway March 2018 2 MB
Product Brochures Power Management Brochure R01 November 2024 2.4 MB
Product FAQs SPx3819 FAQ 1.0.0 September 2006 200.9 KB
Symbols & Footprints SPX3819M5-L/TR CAD File (.bxl) September 2018 82.2 KB
Symbols & Footprints SPX3819M5-L-1-2/TR CAD File (.bxl) September 2018 82.2 KB
Symbols & Footprints SPX3819M5-L-1-5/TR CAD File (.bxl) September 2018 81.7 KB
Symbols & Footprints SPX3819M5-L-1-8/TR CAD File (.bxl) September 2018 81.7 KB
Symbols & Footprints SPX3819M5-L-2-5/TR CAD File (.bxl) September 2018 81.7 KB
Symbols & Footprints SPX3819M5-L-3-0/TR CAD File (.bxl) September 2018 81.7 KB
Symbols & Footprints SPX3819M5-L-3-3/TR CAD File (.bxl) September 2018 81.7 KB
Symbols & Footprints SPX3819M5-L-5-0/TR CAD File (.bxl) September 2018 81.7 KB
Symbols & Footprints SPX3819R2-L/TR CAD File (.bxl) September 2018 24.7 KB
Symbols & Footprints SPX3819R2-L-1-2/TR CAD File (.bxl) September 2018 24.7 KB
Symbols & Footprints SPX3819S-L/TR CAD File (.bxl) September 2018 75.5 KB
Symbols & Footprints SPX3819S-L-5-0/TR CAD File (.bxl) September 2018 75.5 KB
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Quality & RoHS

Part Number RoHS | Exempt RoHS Halogen Free REACH TSCA MSL Rating / Peak Reflow Package
SPX3819R2-L/TR N Y Y Y Y L1 / 260ᵒC DFN8 2x3
SPX3819R2-L-1-2/TR N Y Y Y Y L1 / 260ᵒC DFN8 2x3
SPX3819M5-L-5-0/TR N Y Y Y Y L1 / 260ᵒC SOT-23-5
SPX3819S-L-5-0/TR N Y Y Y Y L1 / 260ᵒC NSOIC8
SPX3819S-L/TR N Y Y Y Y L1 / 260ᵒC NSOIC8
SPX3819M5-L-1-2/TR N Y Y Y Y L1 / 260ᵒC SOT-23-5
SPX3819M5-L-1-5/TR N Y Y Y Y L1 / 260ᵒC SOT-23-5
SPX3819M5-L-1-8/TR N Y Y Y Y L1 / 260ᵒC SOT-23-5
SPX3819M5-L-2-5/TR N Y Y Y Y L1 / 260ᵒC SOT-23-5
SPX3819M5-L-3-0/TR N Y Y Y Y L1 / 260ᵒC SOT-23-5
SPX3819M5-L-3-3/TR N Y Y Y Y L1 / 260ᵒC SOT-23-5
SPX3819M5-L/TR N Y Y Y Y L1 / 260ᵒC SOT-23-5

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
SPX3819A1-3-3 DFN8 2x3 OBS
SPX3819A1-3-3/TR DFN8 2x3 OBS
SPX3819A1-L-3-3 DFN8 2x3 OBS
SPX3819M3-1-8 SOT-223-3 OBS
SPX3819M3-3-0 SOT-223-3 OBS
SPX3819M3-3-1 SOT-223-3 OBS
SPX3819M3-3-3 SOT-223-3 OBS
SPX3819M3-L-1-8 SOT-223-3 OBS
SPX3819M3-L-3-0 SOT-223-3 OBS
SPX3819M3-L-3-1 SOT-223-3 OBS
SPX3819M3-L-3-3 SOT-223-3 OBS
SPX3819M5 SOT-23-5 -40 125 OBS
SPX3819M5-1-2 SOT-23-5 -40 125 OBS
SPX3819M5-1-2/TR SOT-23-5 -40 125 OBS
SPX3819M5-1-5 SOT-23-5 OBS
SPX3819M5-1-5/TR SOT-23-5 -40 125 OBS
SPX3819M5-1-8 SOT-23-5 -40 125 OBS
SPX3819M5-1-8/TR SOT-23-5 -40 125 OBS
SPX3819M5-2-5 SOT-23-5 -40 125 OBS
SPX3819M5-2-5/TR SOT-23-5 -40 125 OBS
SPX3819M5-2-5/TRR SOT-23-5 -40 125 OBS
SPX3819M5-3-0 SOT-23-5 -40 125 OBS
SPX3819M5-3-0/TR SOT-23-5 -40 125 OBS
SPX3819M5-3-1 SOT-23-5 OBS
SPX3819M5-3-1/TR SOT-23-5 OBS
SPX3819M5-3-3 SOT-23-5 -40 125 OBS
SPX3819M5-3-3/TR SOT-23-5 -40 125 OBS
SPX3819M5-5-0 SOT-23-5 -40 125 OBS
SPX3819M5-5-0/TR SOT-23-5 -40 125 OBS
SPX3819M5-L SOT-23-5 -40 125 OBS SPX3819M5-L/TR
SPX3819M5-L-1-2 SOT-23-5 -40 125 OBS SPX3819M5-L-1-2/TR
SPX3819M5-L-1-2/TR SOT-23-5 -40 125 Active Order
SPX3819M5-L-1-5 SOT-23-5 -40 125 OBS SPX3819M5-L-1-5/TR
SPX3819M5-L-1-5/TR SOT-23-5 -40 125 Active Order
SPX3819M5-L-1-8 SOT-23-5 -40 125 OBS SPX3819M5-L-1-8/TR
SPX3819M5-L-1-8/TR SOT-23-5 -40 125 Active Order
SPX3819M5-L-2-5 SOT-23-5 -40 125 OBS SPX3819M5-L-2-5/TR
SPX3819M5-L-2-5/TR SOT-23-5 -40 125 Active Order
SPX3819M5-L-3-0 SOT-23-5 -40 125 OBS SPX3819M5-L-3-0/TR
SPX3819M5-L-3-0/TR SOT-23-5 -40 125 Active Order
SPX3819M5-L-3-1 SOT-23-5 -40 125 OBS SPX3819M5-L
SPX3819M5-L-3-1/TR SOT-23-5 -40 125 OBS SPX3819M5-L/TR
SPX3819M5-L-3-3 SOT-23-5 -40 125 OBS Order
SPX3819M5-L-3-3/TR SOT-23-5 -40 125 Active Order
SPX3819M5-L-5-0 SOT-23-5 -40 125 OBS SPX3819M5-L-5-0/TR
SPX3819M5-L-5-0/TR SOT-23-5 -40 125 Active Order
SPX3819M5-L/TR SOT-23-5 -40 125 Active Order
SPX3819M5/TR SOT-23-5 -40 125 OBS
SPX3819R2 DFN8 2x3 OBS
SPX3819R2-1-2 DFN8 2x3 -40 125 OBS
SPX3819R2-1-2/TR DFN8 2x3 OBS
SPX3819R2-1-5 DFN8 2x3 OBS
SPX3819R2-1-5/TR DFN8 2x3 OBS
SPX3819R2-1-8 DFN8 2x3 OBS
SPX3819R2-1-8/TR DFN8 2x3 OBS
SPX3819R2-2-5 DFN8 2x3 OBS
SPX3819R2-2-5/TR DFN8 2x3 OBS
SPX3819R2-3-0 DFN8 2x3 OBS
SPX3819R2-3-1 DFN8 2x3 OBS
SPX3819R2-3-3 DFN8 2x3 OBS
SPX3819R2-3-3/TR DFN8 2x3 OBS
SPX3819R2-5-0 DFN8 2x3 OBS
SPX3819R2-L DFN8 2x3 -40 125 OBS SPX3819R2-L/TR
SPX3819R2-L-1-2 DFN8 2x3 -40 125 OBS SPX3819R2-L-1-2/TR
SPX3819R2-L-1-2/TR DFN8 2x3 -40 125 Active Order
SPX3819R2-L-1-5 DFN8 2x3 -40 125 OBS SPX3819R2-L
SPX3819R2-L-1-5/TR DFN8 2x3 -40 125 OBS SPX3819R2-L/TR
SPX3819R2-L-1-8 DFN8 2x3 -40 125 OBS SPX3819R2-L-1-8/TR
SPX3819R2-L-1-8/TR DFN8 2x3 -40 125 OBS SPX3819R2-L/TR
SPX3819R2-L-2-5 DFN8 2x3 -40 125 OBS SPX3819R2-L
SPX3819R2-L-2-5/TR DFN8 2x3 -40 125 OBS SPX3819R2-L/TR
SPX3819R2-L-3-0 DFN8 2x3 OBS
SPX3819R2-L-3-1 DFN8 2x3 OBS
SPX3819R2-L-3-3 DFN8 2x3 -40 125 OBS SPX3819R2-L
SPX3819R2-L-3-3/TR DFN8 2x3 -40 125 OBS SPX3819R2-L/TR
SPX3819R2-L-5-0 DFN8 2x3 -40 125 OBS SPX3819R2-L
SPX3819R2-L-5-0/TR DFN8 2x3 -40 125 OBS SPX3819R2-L/TR
SPX3819R2-L/TR DFN8 2x3 -40 125 Active Order
SPX3819S NSOIC8 -40 125 OBS
SPX3819S-1-8 NSOIC8 -40 125 OBS
SPX3819S-1-8/TR NSOIC8 OBS
SPX3819S-2-5 NSOIC8 -40 125 OBS
SPX3819S-2-5/TR NSOIC8 -40 125 OBS
SPX3819S-3-0 NSOIC8 OBS
SPX3819S-3-0/TR NSOIC8 OBS
SPX3819S-3-1 NSOIC8 OBS
SPX3819S-3-1/TR NSOIC8 OBS
SPX3819S-3-3 NSOIC8 -40 125 OBS
SPX3819S-3-3/TR NSOIC8 OBS
SPX3819S-5-0 NSOIC8 -40 125 OBS
SPX3819S-5-0/TR NSOIC8 OBS
SPX3819S-L NSOIC8 -40 125 OBS SPX3819S-L/TR
SPX3819S-L-1-2 NSOIC8 -40 125 OBS SPX3819S-L-1-2/TR
SPX3819S-L-1-2/TR NSOIC8 -40 125 OBS SPX3819S-L/TR
SPX3819S-L-1-5 NSOIC8 -40 125 OBS SPX3819S-L-1-5/TR
SPX3819S-L-1-5/TR NSOIC8 -40 125 OBS SPX3819S-L/TR
SPX3819S-L-1-8 NSOIC8 -40 125 OBS SPX3819S-L-1-8/TR
SPX3819S-L-1-8/TR NSOIC8 -40 125 OBS SPX3819S-L/TR
SPX3819S-L-2-5 NSOIC8 -40 125 OBS SPX3819S-L-2-5/TR
SPX3819S-L-2-5/TR NSOIC8 -40 125 OBS SPX3819S-L/TR
SPX3819S-L-3-0 NSOIC8 -40 125 OBS SPX3819S-L
SPX3819S-L-3-0/TR NSOIC8 -40 125 OBS SPX3819S-L/TR
SPX3819S-L-3-1 NSOIC8 -40 125 OBS SPX3819S-L
SPX3819S-L-3-1/TR NSOIC8 -40 125 OBS SPX3819S-L/TR
SPX3819S-L-3-3 NSOIC8 -40 125 OBS SPX3819S-L-3-3/TR
SPX3819S-L-3-3/TR NSOIC8 -40 125 OBS SPX3819S-L/TR
SPX3819S-L-5-0 NSOIC8 -40 125 OBS SPX3819S-L-5-0/TR
SPX3819S-L-5-0/TR NSOIC8 -40 125 Active Order
SPX3819S-L/TR NSOIC8 -40 125 Active Order
SPX3819S/TR NSOIC8 OBS
SPX3819T5-1-8 TO-263-5 OBS
SPX3819T5-1-8/TR TO-263-5 OBS
SPX3819T5-3-0 TO-263-5 OBS
SPX3819T5-3-1 TO-263-5 OBS
SPX3819T5-3-3 TO-263-5 OBS
SPX3819T5-3-3/TR TO-263-5 OBS
SPX3819T5-L-1-8 TO-263-5 OBS
SPX3819T5-L-3-0 TO-263-5 OBS
SPX3819T5-L-3-1 TO-263-5 OBS
SPX3819T5-L-3-3 TO-263-5 OBS
SPX3819U TO-220-3 OBS
SPX3819U-1-8 TO-220-3 OBS
SPX3819U-2-5 TO-220-3 OBS
SPX3819U-3-0 TO-220-3 OBS
SPX3819U-3-1 TO-220-3 OBS
SPX3819U-3-3 TO-220-3 OBS
SPX3819U-5-0 TO-220-3 OBS
SPX3819U-L TO-220-3 OBS
SPX3819U-L-1-8 TO-220-3 OBS
SPX3819U-L-2-5 TO-220-3 OBS
SPX3819U-L-3-0 TO-220-3 OBS
SPX3819U-L-3-1 TO-220-3 OBS
SPX3819U-L-3-3 TO-220-3 OBS
SPX3819U-L-5-0 TO-220-3 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
DFN8 2x3
  • JEDEC Reference: MO-229
  • MSL Pb-Free: L1 @ 260ºC
  • MSL SnPb Eutectic: n/a
  • ThetaJA: 59ºC/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): 330 x 12 x 8
  • Tape & Reel Unit Orientation: Quadrant 1
  • Dimensions: mm
  • Length: 2
  • Width: 3
  • Thickness: 1.00
  • Lead Pitch: 0.5
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-223-3
  • JEDEC Reference: TO-261
  • MSL Pb-Free: L1 @ 260ºC
  • MSL SnPb Eutectic: n/a
  • ThetaJA: 62.3ºC/W
  • Bulk Pack Style: Tube
  • Quantity per Bulk Pack: 78
  • Quantity per Reel: 2500
  • Quantity per Tube: 78
  • Quantity per Tray: n/a
  • Reel Size (Dia. x Width x Pitch): 330 x 12 x 8
  • Tape & Reel Unit Orientation: Heatsink by sprocket hole
  • Dimensions: mm
  • Length: 6.50
  • Width: 3.50
  • Thickness: 1.80
  • Lead Pitch: 2.30
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
TO-220-3
  • JEDEC Reference: TO-220
  • MSL Pb-Free: n/a
  • MSL SnPb Eutectic: n/a
  • ThetaJA: 29.4ºC/W
  • Bulk Pack Style: Tube
  • Quantity per Bulk Pack: n/a
  • Quantity per Reel: n/a
  • Quantity per Tube: 50
  • Quantity per Tray: n/a
  • Reel Size (Dia. x Width x Pitch): n/a
  • Tape & Reel Unit Orientation: n/a
  • Dimensions: inch
  • Length: 0.355 max
  • Width: 0.420 max
  • Thickness: 0.190 max
  • Lead Pitch: 0.10
TO-263-5
  • JEDEC Reference: TO-263
  • MSL Pb-Free: L3 @ 245ºC
  • MSL SnPb Eutectic: n/a
  • ThetaJA: 31.2ºC/W
  • Bulk Pack Style: Tube
  • Quantity per Bulk Pack: n/a
  • Quantity per Reel: 500
  • Quantity per Tube: 50
  • Quantity per Tray: n/a
  • Reel Size (Dia. x Width x Pitch): 330 x 24 x 16
  • Tape & Reel Unit Orientation: Tab away from sprocket hole.
  • Dimensions: inch
  • Length: 0.380 max
  • Width: 0.420 max
  • Thickness: 0.190
  • Lead Pitch: 0.067

Notifications

Distribution Date Description File
01/25/2024 To improve manufacturing efficiency, MaxLinear has qualified the leadframes from AAMI in Chuzhou in addition to the currently qualified AAMI factories in Shenzhen and Malaysia, for use on the products listed above. There is no change to form, fit, function and reliability of the parts.
11/01/2023 To improve manufacturing efficiency, MaxLinear has qualified mold compound GE-1030S-CJ for use on the products listed above. There is no change to form, fit, function and reliability of the parts.
07/17/2023 In 2023, MaxLinear will be converting all shipping labels for the parts noted from an EXAR format to MaxLinear’s label. During this transition customers may receive either label. This change affects only shipping and packing labels. This change will not affect the part number, part marking, manufacturing process or manufacturing sites. Only work in progress material will be converted. Existing inventory from MaxLinear’s warehouse, channel sales, distributor, and such, will not be converted. Hence, customers may experience receiving mixed shipments with both Exar and MaxLinear labels for some period until existing inventory of old labels is eventually cleared out. Situation is product to product with no predictable way to determine when all old labels will be exhausted. No change to product form, fit, function and reliability. ADDENDUM A: Fixed MBB label logo for DX204001 to MaxLinear logo. ADDENDUM B: Replaced ‘All other affected products outer box label’ with clearer pictures. Corrected Date Issued (from original PCN) issue date +90 days to August 30, 2023.
06/01/2023 In 2023, MaxLinear will be converting all shipping labels for the parts noted from an EXAR format to MaxLinear’s label. During this transition customers may receive either label. This change affects only shipping and packing labels. This change will not affect the part number, part marking, manufacturing process or manufacturing sites. Only work in progress material will be converted. Existing inventory from MaxLinear’s warehouse, channel sales, distributor, and such, will not be converted. Hence, customers may experience receiving mixed shipments with both Exar and MaxLinear labels for some period until existing inventory of old labels is eventually cleared out. Situation is product to product with no predictable way to determine when all old labels will be exhausted. No change to product form, fit, function and reliability.
06/01/2023 In 2023, MaxLinear will be converting all shipping labels for the parts noted from an EXAR format to MaxLinear’s label. During this transition customers may receive either label. This change affects only shipping and packing labels. This change will not affect the part number, part marking, manufacturing process or manufacturing sites. Only work in progress material will be converted. Existing inventory from MaxLinear’s warehouse, channel sales, distributor, and such, will not be converted. Hence, customers may experience receiving mixed shipments with both Exar and MaxLinear labels for some period until existing inventory of old labels is eventually cleared out. Situation is product to product with no predictable way to determine when all old labels will be exhausted. No change to product form, fit, function and reliability. ADDENDUM: Fixed MBB label logo for DX204001 to MaxLinear logo.
09/16/2018 The SPX3819 datasheet has been revised to correct the ESD Rating. The correct value: ESD Rating (HBM) ...1kV
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
02/15/2017 Qualification of alternate assembly subcon, ANST.
01/27/2017 Qualification of alternate assembly subcon, ANST, China.
01/12/2017 Standard tape and reel quantity will change from 2500 pieces to 3000 pieces for SOT23-3L/5L/6L.
10/06/2016 Qualification of alternate assembly subcon, JCET.
07/26/2016 Product discontinuation notification. Discontinued.
04/13/2016 Qualification of alternate assembly subcon, JCET.
08/29/2014 Alternate Assembly Site. Addition of JCET for assembly using copper wire or gold wire bonding and standard reel quantity changing from 2500 to 3000 pieces.
10/04/2013 Addition of an alternate qualified assembly site, UTAC Thailand, for assembly using copper or gold wire bonding. Material change and alternate assembly site.
07/30/2013 Addition of an alternate qualified assembly supplier, Carsem (Malaysia) for SOT23 package using copper wire bonding. Material Change.
07/02/2013 Qualification of an alternate qualified assembly supplier, ASE Chung-Li (Taiwan) for the 8L NSOIC package using copper wire bonding. Material change and alternate assembly supplier qualified.
09/29/2011 Product marking change for products in 2x3mm, 8ld DFN. To improve product traceability.
12/07/2009 Enhancement of NSOIC 8, NSOIC14 and NSOIC16 packages to Green (halogen-free) via Mold Compound & Die Attach Material. Enhance packages to be Green (halogen-free).
03/04/2009 Notice of Obsolescence Discontinued by Exar Corporation due to low market demand
08/12/2008 Datasheet Change: Line Regulation Product Re-Characterization.
12/05/2007 Announcing the re-activation of previously announced discontinued products The previously announced discontinued products listed above are being re-activated due to continuing Customer 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 and facility to wafer foundary Silan. 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

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.
For ordering information and general customer service visit our Contact Us page.

Submit a Technical Support Question As a New Question

Ceramic capacitors may be used for this part. For Tantalum or Aluminum Electrolytic types, keep the Equivalent Series Resistance (ESR) as small as possible.

A small common mode choke would be best for filtering this ripple. Variations / combinations of input capacitance might also help but bench testing would be required.

Input and output capacitance may be increased without limit.

The datasheet does not state that this device is operable in a pre-biased output condition; therefore, leakage may occur.

If the input voltage is above dropout voltage then the part will regulate for the entire output current range up to 500mA.

Yes. Try our Excel-based heat calculation spreadsheet ANP-03, Thermal Calculator
 
For further study, this spreadsheet is mentioned in the following helpful application note: ANP-02, Thermal Considerations for Linear Regulators 
  

The SPX3819 data sheet contains a graph of ground current vs load current for your review.
 
Also we suggest that you download the Thermal Considerations application note which includes a few example calculations from the SPX3819: ANP-02, Thermal Considerations for Linear Regulators
 
The Linear Regulator Heat Calculator could also prove helpful: ANP-03, Thermal Calculator
 
Customer bench testing is strongly recommended using intended application circuit to ensure proper operation. 

Visit the product page for the part you are interested in.  The part's status is listed in the Parts & Purchasing section.  You can also view Product Lifecycle and Obsolescence Information including PDNs (Product Discontinuation Notifications).
 
To visit a product page, type the part into the search window on the top of the MaxLinear website.
 
In this example, we searched for XRA1201.  Visit the product page by clicking the part number or visit the orderable parts list by clicking "Orderable Parts". 
 
 
 

 

  

The Parts & Purchasing section of the product page shows the Status of all orderable part numbers for that product.  Click Show obsolete parts, to see all EOL or OBS products.

 
 
 

 

If the bypass pin is to be used, a 10nF ceramic capacitor is suggested. You may also use the value / type mentioned. The only concern with the bypass feature is that startup time is increased. If startup time is a concern then the bypass pin should be kept open. Different values of bypass capacitors will result in different startup times.

This is a little difficult to answer without knowing how the LED will be modulated. If the enable input is used for modulation it is possible that the device may not react fast enough to provide an output. This is very true if the Bypass pin is used. If the output load exceeds the current limit trip point, then the output will be turned off to protect the device. However if the output is always on and modulation is done with some external circuitry, then adding extra capacitance to the output could satisfy the current demand of the LED so as not to cause current limit activation.
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