Dual-Supply Synchronous Buck Controller
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Information 600KHz PWM Step-Down Controller
Max Rec. Output Current (A) 15
IQ (µA) 1500
VIN MAX (V) 28
VOUT MIN (V) 0.8
Frequency (kHz) 600
Efficiency (%) 94
Control Mode Voltage Mode PWM
Special Features Enable, Power Sequencing, Synchronous Rectification, Thermal Shutdown, UVLO Adjustable, Soft Start Adjustable
Operating Temp Range (°C) -40 to 85
Package MSOP-10
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The SP6134H is a 600kHz constant frequency, voltage mode, synchronous PWM step-down controller optimized for high efficiency.

The SP6134H is adequately suited for split plane applications utilizing a low power 5V rail to power the controller circuitry, minimizing power dissipation. Its wide input voltage range of 3V to 15V allows for conversions from the standard 3.3V, 5V, 9.6V and 12V power rails to an output voltage adjustable down to 0.8V. Developed around a wide bandwidth internal amplifier, the SP6134H can accommodate type II and type III compensation schemes.

Protection features include a programmable UVLO, thermal shutdown and output short circuit protection.

The SP6134H is part of a larger family of step-down controllers operating at various switching frequencies up to 1300kHz and input voltages up to 28V. Refer to Exar’s SP6134, SP6132, SP6132H, SP6137 and SP6139 for complete details.

The SP6134H is available in lead free, RoHS compliant, space saving 10-pin MSOP package.

  • 3V to 15V step-down achieved using dual Input
  • Small 10-PiMSOP package
  • 2A to 15A output capability
  • Highly integrated design, minimal components
  • UVLO detects both VCC and VIN
  • Short circuit protection with auto restart
  • On-board 1.5Ω sink (2Ω source) NFET drivers
  • Programmable soft-start
  • Fast transient response
  • High efficiency: greater than 94% possible
  • Asynchronous startup into a pre-charged output

Documentation & Design Tools

Type Title Version Date File Size
Data Sheets SP6134H Data Sheet 2.0.2 February 2022 1.5 MB
Application Notes AN200, Downloading and Installing CAD Symbols and Footprints with Ultra Librarian April 2019 1.2 MB
Product Brochures Power Management Brochure May 2024 7.1 MB
SIMPLIS Models SP6134H SIMPLIS Model May 2011 12.9 MB
Symbols & Footprints SP6134HEU-L/TR CAD File (.bxl) September 2018 85.1 KB
SIMPLIS Models Powerlab Netlists
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Parts & Purchasing

Part Number Pkg Code Min Temp Max Temp Status Buy Now Order Samples
SP6134HEU-L/TR MSOP10 -40 85 Active Order
SP6134EB Board Active

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.


Pkg Code Details Quantities Dimensions
  • JEDEC Reference: MO-187
  • MSL Pb-Free: L1 @ 260ºC
  • MSL SnPb Eutectic: n/a
  • ThetaJA: 214.0ºC/W
  • Bulk Pack Style: Tube
  • Quantity per Bulk Pack:
  • Quantity per Reel: 2500
  • Quantity per Tube: 50
  • 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
  • Width: 3
  • Thickness: 1.1
  • Lead Pitch: 0.50


Distribution Date Description File
07/26/2016 Product discontinuation notification. Discontinued.
08/29/2011 Material change: Mold compound and die attach material are changed and the listed parts will be fully Green (halogen-free). Migrating to green environment and material standardization.
03/04/2009 Notice of Obsolescence Discontinued by Exar Corporation due to low market demand
01/20/2009 Datasheet Changes Refer to PCN for more details.
02/28/2007 Product Obsolescence Letter and Discontinuation Notification. Discontinued.

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See Application Note ANP-20 (Properly Sizing MOSFETs for PWM Controllers).