XRP7674

2A, 18V PFM/PWM Step-Down Regulator

Description

The XRP7674 is a 2A capable synchronous current-mode PWM step-down (buck) voltage regulator with improved light current load efficiency. A wide 4.5V to 18V input voltage range allows for single supply operations from industry standard 5V and 12V power rails.

With a 340kHz constant operating frequency and integrated high and low-side 100mΩ/100mΩ MOSFETs, the XRP7674 reduces the overall component count and solution footprint. Current-mode control provides fast transient response and cycle-by-cycle OCP. An adjustable soft-start prevents inrush current at turn-on, and in shutdown mode the supply current drops to 0.1µA. At light current loads, the XRP7674 operates in Discontinuous Conduction Mode (DCM) and is complemented by a Pulse Frequency Modulation (PFM) mode to provide excellent conversion efficiency.

Built-in output overvoltage (open load), over temperature, cycle-by-cycle overcurrent, undervoltage lockout (UVLO) and hiccup mode short-circuit protection insures safe operation under abnormal operating conditions.

The XRP7674 is offered in a RoHS compliant, "green"/halogen free 8-pin SOIC package.

Read More

Features

  • 2A continuous output current
  • 4.5V to 18V wide input voltage
    • 0.925V to 16V adjustable output voltage
    • 2% accuracy
  • PWM current mode control
    • 340kHz constant operations
    • Up to 95% efficiency
  • Light load efficiency
  • Programmable soft-start and enable function
  • Built-in thermal, overcurrent, UVLO and output overvoltage protections
  • Pin/function upgrade to Exar XRP7664 and MPS MP1482/2305
  • RoHS compliant, "green"/halogen free 8-pin SOIC package

Application

  • Distributed power architecture
  • Energy Star compliant equipment
  • Portable equipment
  • Point of Load (POL) converter
  • Audio video equipment

Design Tools

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

Parts & Purchasing

Part Number Pkg Code RoHS Min Temp Max Temp Status Buy Now Order Samples
XRP7674IDTR-F NSOIC8 -40 85 OBS Suggested:
XRP7664IDTR-F
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.

Quality Documents

Part NumberREACH
XRP7674IDTR-FDownload
Additional Quality Documentation may be available, please contact customersupport@exar.com.
Distribution Date Description File
07/11/2017 Product Discontinuation Notification PDN_17-0623-01-1033.pdf

Frequently Asked Questions

The best way to determine this is to go to exar.com and type the part into the search function. At or near the top of the results you should see something that looks like
 
 

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.

Didn't find what you are looking for? Click here to post a new question.