6A, 600KHz Buck Regulator


The SP7663 is a synchronous voltage mode PWM step-down (buck) regulator capable of a constant output current up to 6A. A wide 5V to 22V single input voltage range allows for single supply operations from industry standard 5V, 12V and 18V power rails. Operations down to 3V are supported with an additional biasing voltage.

With a 600kHz constant operating frequency and integrated high and low side switch, the SP7663 reduces the overall component count and solution footprint. In addition to a 1% output set point accuracy, this device provides high efficiency, low ripple and excellent line and load regulation. An enable function and soft-start feature allow for controlled power up sequencing implementation.

Built-in current limiting, UVLO, output short-circuit and over temperature protection ensure safe operation under abnormal operating conditions.

The SP7663 is offered in a RoHS compliant, lead free 26-pin 7mm x 4mm DFN package.

Read More


  • 4.5V to 5.5V or 4.75V to 22V input voltage range using single supply
  • 3V to 22V input voltage range using dual supply
  • ±1% 0.8V reference
  • 6A output capability
  • Current limiting using inductor DCR
  • Built in low RDS(ON) power switches
  • 600 kHz fixed frequency operation
  • Over temperature protection
  • Short-circuit protection with auto restart
  • Wide BW Amp allows type II or III compensation
  • Programmable soft-start
  • Fast transient response
  • High efficiency: greater than 95% possible
  • Non-synchronous start up into a pre-charged output
  • Available in RoHS compliant, lead free packaging: small 7mm x 4mm DFN package
  • U.S. patent #6,922,041


Spice Models - Generic

Generic Spice Model

Chip Shot

Chip Shot

Product Brochure

Power Management Brochure


Design Tools

Simulation Models
Technical Library
Reference Designs


Pkg Code Details Quantities Dimensions PDF
DFN26 7x4
  • JEDEC Reference: n/a
  • MSL Pb-Free: L3 @ 260ºC
  • MSL SnPb Eutectic: n/a
  • ThetaJA: 36ºC/W
  • Bulk Pack Style: Canister
  • 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 16 x 8
  • Tape & Reel Unit Orientation: Pin 1 at sprocket hole
  • Dimensions: mm
  • Length: 7
  • Width: 4
  • Thickness: 0.9
  • Lead Pitch: 0.5

Parts & Purchasing

Part Number Pkg Code RoHS Min Temp Max Temp Status Buy Now Order Samples
SP7663ER/TR DFN26 -40 85 OBS
SP7663ER-L DFN26 7x4 -40 125 OBS Suggested:
SP7663ER-L/TR DFN26 7x4 -40 125 EOL Suggested:
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.
Distribution Date Description File
07/11/2017 Product Discontinuation Notification PDN_17-0623-01-1033.pdf
07/26/2016 Product discontinuation notification. Discontinued. PDN 16-0626-01-1033.pdf
09/14/2015 Metal layer change Yield improvement PCN 15-0414-01-1033.pdf
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. PCN_13-0522-04-1033.pdf
04/19/2012 Change in FET supplier. Due to unavailability of the ANPEC FETs. PCN_12-0419-02-1033.pdf
02/26/2010 Material Change; Datasheet Change; Wafer fab transfer Due to unavailability of the controller chip in Polar fab, a new controller has been designed and fabricated in Jazz to replace the existing chip. FET chips have also been replaced to match the new controller. PCN_10-0224-02-1033.pdf
02/21/2007 Adding minimum and maximum oscillator frequency to the specification Datasheet Change PCN 07-0214-01-1033.pdf