Synchronous Buck Switching Controller


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.

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  • 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



SP6133 Synchronous Buck Controller


Evaluation Board Manual

Spice Models - OrCAD

Orcad Spice Model

Spice Models - Generic

Generic Spice Model

Product Brief

Product Brief

Chip Shot

Chip Shot

Product Brochure

Power Management Brochure


Design Tools

Simulation Models
Reference Designs


Pkg Code Details Quantities Dimensions PDF
QFN16 3x3
  • JEDEC Reference: MO-220
  • MSL Pb-Free: L1 @ 260ºC
  • MSL SnPb Eutectic: n/a
  • ThetaJA: 33.3ºC/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 12 x 8
  • Tape & Reel Unit Orientation: Pin 1 at sprocket hole.
  • Dimensions: mm
  • Length: 3.00
  • Width: 3.00
  • Thickness: 0.90
  • Lead Pitch: 0.50

Parts & Purchasing

Part Number Pkg Code RoHS Min Temp Max Temp Status Buy Now Order Samples
SP6133ER1 QFN16 -40 85 OBS
SP6133ER1/TR QFN16 -40 85 OBS
SP6133ER1-ES QFN16 -40 85 OBS
SP6133ER1-L QFN16 3x3 -40 85 OBS Suggested:
SP6133ER1-L/TR QFN16 3x3 -40 85 Active
SP6133EB Board -40 85 Active
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
02/14/2017 Qualification of alternate assembly subcon, GREATEK, Taiwan. PCN 17-0102-01 Greatek-1033.pdf
01/05/2017 Addition of an alternate qualified location, ANST, China. PCN 16-0835-01 ANST-1033.pdf
07/26/2016 Product discontinuation notification. Discontinued. PDN 16-0626-01-1033.pdf