|Information||Quad Output Universal Customizable PMIC with PFM|
|# of Channels||4|
|Special Features||Pre-programmed only|
|VIN MIN (V)||4.75|
|VIN MAX (V)||18|
|# of Outputs||4|
|VOUT MIN (V)||0.6|
|VOUT MAX (V)||0.9*Vin|
|Junction Temp Range (°C)||-40 to 125|
|Gate Drive Pull Up/Down||4ohm / 2ohm|
|Programmable Frequency Range (MHz)||0.1 to 1.2|
|Additional Features||XRP7724 Pin compatible without I2C|
|Set Point Resolution (mV)||2.5|
|Control Technology||17 bit DPWM/DPFM|
The XRP7720 is a quad output universal customizable PMIC comprised of a quad channel Digital Pulse Width Modulated (DPWM) step-down (buck) controller and 5V LDO. A wide 4.75V to 5.5V and 5.5V to 18V input voltage dual range allows for single supply operation from standard power rails. It is pin compatible to the popular XRP7724 and provides full flexibility during the development phase while offering a cost effective option for high volume production units.
With integrated FET gate drivers, it can operate from 105kHz to 1.23MHz with independent channel-to-channel programmable operating frequency, the XRP7720 reduces overall component count and solution footprint while optimizing conversion efficiencies. A selectable Digital Pulse Frequency Mode (DPFM) and low operating current result in better than 80% efficiency down to 10mA load provides support for portable and Energy Star compliant applications. Each XRP7720 output channel is individually programmable down to a minimum 0.6V with a resolution of 2.5mV, and configurable for precise soft-start and soft-stop sequencing, including delay and ramp control.
During development, the XRP7720ILB-DEV is configured using PowerArchitectTM 5.1 (PA 5.1) through an I2C interface, allowing for short development of the power system and short time-to-market for the entire system. Once development is completed and volume production is ready to commence, Exar will assign a unique part suffix and deliver a customized XRP7720.
Built-in independent output overvoltage, over temperature, overcurrent and undervoltage lockout protections ensure safe operation under abnormal operating conditions.
The XRP7720 is offered in a RoHS compliant, “green”/halogen free 44-pin TQFN package.
- Pin compatible to XRP7724
- SMBus compliant I2C interface available on XRP7720ILB-DEV only
- Supported by PowerArchitect™ Design and Configuration Software
- XRP7720ILB-DEV only
- Quad channel step-down controller
- Digital PWM 105kHz to 1.23MHz operation
- Individual channel frequency selection
- Patented digital PFM with ultrasonic mode
- Integrated MOSFET drivers
- Programmable 5 coefficient PID control
- 4.75V to 18V input voltage
- 4.75V-5.5 and 5.5V-18V input range
- 0.6V to 5.5V output voltage
- 3 x 15V capable PSIOs + 2 x GPIOs
- Full start/stop sequencing support
- Built-in thermal, overcurrent, UVLO and output overvoltage protections
- On board 5V standby LDO
- 7x7mm TQFN44 package
- Blade servers
- Micro servers
- Network adapter cards
- Video surveillance systems
Documentation & Design Tools
|Application Notes||ANP-38, XRP7724 I2C Command Set and Programming Guide||R00||July 2019||2.5 MB|
|Application Notes||ANP-39, Loading XRP7724 RAM with Runtime Intel HEX File||1.1.0||January 2014||1.1 MB|
|Application Notes||ANP-43, XRP772X Current Measurement Application Note||1.0.1||December 2013||744.3 KB|
|Application Notes||ANP-32, Practical Layout Guidelines for PowerXR Designs||1.1.0||October 2012||1.5 MB|
|Application Notes||ANP-35, XRP77XX: Extending the MOSFET Gate Drive Conductors||1.0.0||May 2011||2 MB|
|User Guides & Manuals||XRP77xxEVB-XCM-V62 (Configuration Module)||1.0.1||October 2017||880.5 KB|
|User Guides & Manuals||XRP7720/7724/7725EVB-DEMO-1 Evaluation Board Manual||2.0.0||January 2014||3.8 MB|
|Product Flyers||Universal PMICs||April 2019||2 MB|
|Product Brochures||Power Management Brochure||October 2020||2.4 MB|
Parts & Purchasing
|Part Number||Pkg Code||Status||Suggested Replacement||PDN|
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.
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
In this example, we looked for XRA1201. Click on part number header or on the link at the bottom of the result. This brings you to the product page. For example:
Click on Parts & Purchasing, highlighted with the blue arrow 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, the legend still present:
Another method to find out if a part is OBS or EOL is to click on SUPPORT at the top:
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.