SP6137

900KHz PWM Switching Controller
Data Sheets OBS (Obsolete)

Overview

Information
Max Rec. Output Current (A)
IQ (µA)
VIN MIN (V)
VIN MAX (V)
VOUT MIN (V)
VOUT MAX (V)
Frequency (kHz)
Efficiency (%)
Control Mode
Special Features
Operating Temp Range (°C)
Package
Show more

The SP6137 is a 900kHz constant frequency, voltage mode, synchronous PWM step-down controller optimized for high efficiency.

The SP6137 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 SP6137 can accommodate type II and type III compensation schemes.

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

The SP6137 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 SP6132, SP6132H, SP6134, SP6134H and SP6139 for complete details.

The SP6137 is available i-n lead free, RoHS compliant, space saving 10-pin MSOP package.

  • 2.5V to 20V step-down achieved using dual input
  • On-board 1.5Ω sink (2Ω source) NFET drivers
  • Up to 25A output capability
  • Small 10-PiMSOP package
  • Highly integrated design, minimal components
  • UVLO detects both VCC and VIN
  • Short circuit protection with auto restart
  • 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 SP6137 900KHz PWM Switching Controller 2.0.0 January 2009 725.9 KB
Application Notes ANP-16, Loop Compensation of Voltage-Mode Buck Converters A January 2008 105.3 KB
Application Notes ANP-18, Selecting Appropriate Compensation: Type-II or Type-III A December 2006 41.3 KB
Application Notes ANP-18, Type II Loop Compensation Calculator A December 2006 589 KB
Application Notes ANP-15, Voltage Mode Control: The Modulator in Continuous Current Mode (CCM) of operation D November 2006 430 KB
Application Notes ANP-20, Properly Sizing MOSFETs for PWM Controllers A November 2006 526.5 KB
Application Notes ANP-16, Type III Loop Compensation Calculator A October 2006 595 KB
User Guides & Manuals SP6137LED Evaluation Board Manual 1.0.0 May 2004 451.5 KB
Design Solutions DS-31, 900kHz Buck-Boost Controller Solution Provides 5V to -5V Conversion With 1A Output To Power Dual Supply I/O Subsystems In Set Top Box November 2007 62.5 KB
Product Brochures Power Management Brochure October 2020 2.4 MB
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Parts & Purchasing

Part Number Pkg Code Min Temp Max Temp Status Suggested Replacement PDN
SP6137CU MSOP10 0 70 OBS
SP6137CU-L MSOP10 0 70 OBS SP6137EU-L
SP6137CU-L/TR MSOP10 0 70 OBS SP6137EU-L/TR
SP6137CU/TR MSOP10 0 70 OBS
SP6137EU MSOP10 -40 85 OBS
SP6137EU-L MSOP10 -40 85 OBS SP6136
SP6137EU-L/TR MSOP10 -40 85 OBS SP6136
SP6137EU/TR MSOP10 -40 85 OBS
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.

Packaging

Pkg Code Details Quantities Dimensions PDF
MSOP10
  • 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

Notifications

Distribution Date Description File
07/20/2015 Product discontinuation notification
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).