SP6651

800mA Synchronous Buck Regulator
Data Sheets OBS (Obsolete)

Overview

Information 800mA Synchronous Buck Regulator
# of Outputs 1
IOUT (A) 0.8
VIN MIN (V) 2.7
VIN MAX (V) 5.5
IQ (µA) 20
VOUT MIN (V) 0.8
VOUT MAX (V) 5
Frequency (kHz) PFM
Accuracy (%) <4.0
Efficiency (%) 98
Package MSOP-10, DFN-10
X x Y Package Dimension (mm) -
Control Mode COT
Special Features Light Load PFM, Enable, Over Current Protection, Synchronous Rectification, Thermal Shutdown, UVLO, Soft Start Built-in, Internal Compensation, 100% Duty Cycle
Operating Temperature (°C) -40 to 85
Show more

The SP6651A is an 800mA synchronous buck regulator which is ideal for portable applications that use a Li-ion or 3-cell alkaline/NiCD/NiMH input. The SP6651A's proprietary control loop, 20μA light load quiescent current, and 0.3Ω power switches provide excellent efficiency across a wide range of output currents. As the input battery supply decreases towards the output voltage, the SP6651A seamlessly transitions into 100% duty ratio operation – further extending useful battery life. The SP6651A is protected against overload and short-circuit conditions with a precise inductor peak current limit. Other features include programmable undervoltage lockout and low battery detection, externally programmed output voltage down to 1.0V, logic level shutdown control and 140°C over temperature shutdown.

  • DFN package (3mm x 3mm)
  • Ultra-low 20µA quiescent current
  • 98% efficiency possible
  • 800mA output current
  • 2.7V to 5.5V input voltage range
  • Output adjustable down to 1.0V
  • No external FETs required
  • 1.25A inductor peak current limit
  • 100% duty ratio low dropout operation
  • 80μA light load quiescent current in dropout
  • Over temperature protection
  • Logic shutdown control
  • Programmable UVLO and adaptive battery low output

Documentation & Design Tools

All Types Data Sheets Application Notes Product Briefs & Brochures User Guides & Manuals
Type Title Version Date File Size
Data Sheets SP6651A High Efficiency 800mA Synchronous Buck Regulator 1.0.0 December 2005 157.2 KB
Application Notes ANP-22, Filter Design in Continuous Conduction Mode B January 2007 270.6 KB
User Guides & Manuals SP6651A Evaluation Board Manual 1.0.0 September 2004 148.1 KB
Product Brochures Power Management Brochure R01 November 2024 2.4 MB
Register for a myMxL account or Login to myMxL to view all Technical Documentation & Design Tools.

Parts & Purchasing

Part Number Pkg Code Min Temp Max Temp Status Suggested Replacement PDN
SP6651AER DFN10 3x3 OPT1 -40 85 OBS
SP6651AER-L DFN10 3x3 OPT1 -40 85 OBS
SP6651AER-L/TR DFN10 3x3 OPT1 -40 85 OBS
SP6651AER/TR DFN10 3x3 OPT1 -40 85 OBS
SP6651AEU MSOP10 -40 85 OBS
SP6651AEU-L MSOP10 -40 85 OBS SP6651AEU-L/TR
SP6651AEU-L/TR MSOP10 -40 85 OBS
SP6651AEU/TR MSOP10 -40 85 OBS
SP6651AEB Board 0 85 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
MSOP10
  • JEDEC Reference: MO-187
  • MSL Pb-Free: L1 @ 260ºC
  • MSL SnPb Eutectic: n/a
  • ThetaJA: 214.0ºC/W
  • Bulk Pack Style: Tube
  • Quantity per Bulk Pack:
  • Quantity per Reel: 2500
  • Quantity per Tube: 50
  • Quantity per Tray: n/a
  • Reel Size (Dia. x Width x Pitch): 330 x 12 x 8
  • Tape & Reel Unit Orientation: Pin 1 at sprocket hole.
  • Dimensions: mm
  • Length: 3
  • Width: 3
  • Thickness: 1.1
  • Lead Pitch: 0.50
DFN10 3x3 OPT1
  • JEDEC Reference:
  • MSL Pb-Free: L1 @ 260ºC
  • MSL SnPb Eutectic:
  • ThetaJA: 40.5C/W
  • Bulk Pack Style: n/a
  • 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: 3
  • Width: 3
  • Thickness: 1.00
  • Lead Pitch: 0.5

Notifications

Distribution Date Description File
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.
07/11/2017 Product Discontinuation Notification
01/05/2017 Addition of an alternate qualified location, ANST, China.
07/26/2016 Product discontinuation notification. Discontinued.
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.
08/29/2011 Material change: Mold compound and die attach material are changed and the listed parts will be fully Green (halogen-free). Migrating to green environment and material standardization.
02/28/2007 Product Obsolescence Letter and Discontinuation Notification. Discontinued.

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

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.

 
 
 

 

Company
Information
Contact Us
Careers
Maximize Your Potential

Join the MaxLinear team and help shape the future of networking and communications technology.

© 2024 MaxLinear. All Rights Reserved.