1.5A Non Synchronous Step-Down Regulator
OBS (Obsolete)
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Information 1.5A Non Synchronous Step-Down Regulator
Package SOT23-6
IQ (µA) 800
Special Features Enable, Over Current Protection, Thermal Shutdown, Soft Start Built-in, Internal Compensation
VIN MIN (V) 4.5
VIN MAX (V) 18
# of Outputs 1
VOUT MIN (V) 0.81
Frequency (kHz) 1400
Efficiency (%) 92
Accuracy (%) 3.0
IOUT (A) 1.5
X x Y Package Dimension (mm) -
Control Mode Current Mode PWM
Operating Temperature (°C) -40 to 85
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The XRP7659 is a current-mode PWM step-down (buck) voltage regulator capable of delivering an output current up to 1.5Amps. A wide 4.5V to 18V input voltage range allows for single supply operation from industry standard 5V, 9.6V and 12V power rails.

With a 1.4MHz constant operating frequency, integrated high-side MOSFET and loop compensation, the XRP7659 reduces the overall component count and solution footprint. Current-mode control provides fast transient response and cycle-by-cycle current limit. An integrated soft-start prevents inrush current at turn-on, and in shutdown mode the supply current drops to 0.1µA.

Built-in output overvoltage (open load), over temperature, cycle-by-cycle over-current and undervoltage lockout (UVLO) protection insure safe operation under abnormal operating conditions.

The XRP7659 is a pin and function compatible device to Monolithic Power Systems MP2359 for input voltages below 18V.

The XRP7659 is offered in a RoHS compliant, "green"/halogen free 6-pin SOT23 package.

  • 1.5A continuous output current
  • 4.5V to 18V wide input voltage
  • PWM current-mode control
    • 1.4MHz constant operation
    • Up to 92% efficiency
  • Adjustable output voltage
    • 0.81V to 15V range
    • ±3% accuracy
  • Enable function and soft-start
  • Built-in thermal, overcurrent, UVLO and output overvoltage protection
  • Pin/function (VIN<18V) compatible to MP2359
  • RoHS compliant, "green"/halogen free 6-pin SOT23 package

  • Distributed power architectures
  • Point of Load (POL) converters
  • Audio video equipment
  • Medical and industrial equipment

Documentation & Design Tools

Type Title Version Date File Size
Application Notes AN200, Downloading and Installing CAD Symbols and Footprints with Ultra Librarian April 2019 1.2 MB
User Guides & Manuals XRP7659 Evaluation Board Manual 1.0.0 August 2012 603.5 KB
Product Brochures Power Management Brochure October 2020 2.4 MB
Symbols & Footprints XRP7659ISTR-F CAD File (.bxl) September 2018 80.2 KB
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Quality & RoHS

Part Number RoHS | Exempt RoHS Halogen Free REACH TSCA MSL Rating / Peak Reflow Package
XRP7659ISTR-F N Y Y Y Y SOT-23-6 Y

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 Min Temp Max Temp Status Suggested Replacement PDN
XRP7659ISTR-F -40 85 OBS
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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.


Distribution Date Description File
03/29/2022 Product Discontinuation Notice
02/19/2016 Material change. Qualified copper wire bonding assembly.
01/09/2015 Alternate Assembly Site Change. Qualified JCET ChuZhou for assembly of the listed parts.
07/29/2013 Qualified ABLECOAT 8008 (wafer back-side coated) die attach material in assembly to replace ABLEBOND 8290 (dispense type) die attach material. Material Change

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The -F suffix indicates ROHS / Green compliance: