The SP6133 is a synchronous step-down switching regulator controller optimized for high efficiency. The part is designed to be especially attractive for single supply step-down conversion from 5V to 24V. The SP6133 is designed to drive a pair of external NFETs using a fixed 300kHz frequency, PWM voltage mode architecture. Protection features include UVLO, thermal shutdown, output short-circuit protection and overcurrent protection with auto restart. The device also features a PWRGD output and an enable input. The SP6133 is available in a space saving 6-pin QFN and offers excellent thermal performance.
- 5V to 24V input step-down converter
- Up to 30A output capability
- Highly integrated design, minimal components
- UVLO detects both VCC and VIN
- Overcurrent circuit protection with auto restart
- Power good output, ENABLE input
- Maximum controllable duty cycle ratio up to 92%
- Wide BW amp allows type II or III compensation
- Programmable soft-start
- Fast transient response
- High efficiency: greater than 95% possible
- Available in 16-Pin QFN package
- External driver enable/disable
- U.S. Patent #6,922,041
- ANP-01, Using Sipex PWM Controllers for Boost Conversion
- ANP-15, Voltage Mode Control: The Modulator in Continuous Current Mode (CCM) of operation
- ANP-16, Loop Compensation of Voltage-Mode Buck Converters
- ANP-16, Type III Loop Compensation Calculator
- ANP-18, Selecting Appropriate Compensation: Type-II or Type-III
- ANP-18, Type II Loop Compensation Calculator
- ANP-20, Properly Sizing MOSFETs for PWM Controllers
- Downloading and Installing CAD Symbols and Footprints with Ultra Librarian
Spice Models - OrCAD
Spice Models - Generic
Parts & Purchasing
|Part Number||Pkg Code||RoHS||Min Temp||Max Temp||Status||Buy Now||Order Samples|
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.
Frequently Asked Questions
Find the product page of the part that you want to get an evaluation board for and click on Parts & Purchasing. Example:
Find the icons under Buy Now or Order Samples:
Click on the Buy Now icon and see who has stock and click on the Buy button:
Alternatively, you can click on the Order Samples
If the icons are missing, then contact Customer Support.
In this example, we looked for XRA1201. When you hover over it, it will turn grey and you can click anywhere in the grey box. This brings you to the product page. For example:
Click on Parts & Purchasing, highlighted in yellow above. The screen changes to:
Notice the status column and the “Show obsolete parts” link:
A legend tells you the definition of the different statuses. Click on the “Show obsolete parts” link to see EOL or OBS part numbers along with the Active part numbers:
Another method to find out if a part is OBS or EOL is to click on SUPPORT:
And then Product Change Notifications
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.