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SGM61431

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4.5V to 36V Input, 3A, Synchronous Buck Converter

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The SGM61430 and SGM61431 are internally compensated, synchronous Buck converters with a wide 4.5V to 36V input voltage range and 3A output current capability. These devices can be easily used in various industrial applications powered from unregulated sources. Easy compensation and cycle-by-cycle current limit are obtained by peak current mode control. With 64μA (TYP, SGM61430) quiescent current and ultra-low 0.6μA (TYP) shutdown current, they are well suited for battery powered systems to prolong battery life. Internal compensation allows quick and low component count design.

Both SGM61430 and SGM61431 can operate at fixed frequency with moderate or heavy load condition. In light load condition, the SGM61430 enters in the pulse frequency modulation (PFM) mode to improve high efficiency, while the SGM61431 works in the forced pulse width modulation (FPWM) mode to achieve low output ripple and good regulation.

The EN/SYNC employs an enable divider to establish a precision threshold that simplifies UVLO adjustment, device on/off control and power sequencing. Thermal shutdown and output short-circuit protection (hiccup mode) are also provided.

The SGM61430 and SGM61431 are both available in a Green SOIC-8 (Exposed Pad) package and can operate over -40 to +125 ambient temperature range.

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FEATURES
  • Wide 4.5V to 36V Input Voltage Range

  • Up to 3A Continuous Output Current

  • SGM61431:

    0.8V to 24V Output Voltage Range

    FPWM at Light Load Condition

  • 390kHz Switching Frequency (Normal Operation)

  • SYNC Input for External Switching Clock

  • Integrated RDSON Switches: 115mΩ/90mΩ (TYP)

  • High Efficiency at Light Load Condition

  • Ultra-Low Shutdown Current: 0.6μA (TYP)

  • Peak Current Mode Control

  • Precision Enable Threshold with UVLO Setting

  • Cycle-by-Cycle Current Limit

  • 1.5ms (TYP) Internal Soft-Start Time

  • -40 to +125 Operating Temperature Range

  • Available in a Green SOIC-8 (Exposed Pad) Package

APPLICATIONS

Industrial Power Supplies

Telecom and Datacom Systems

General Purpose Wide VIN Regulation

Ordering Information
Part Number
StatusPackagePinsPd-Free
RoHS
REACH
Green
MSL RatingOperating Temperature RangeMaterial ContentReliability Report
Unit Resale Price*
(Volume Range: in USD)
Lead Time**
(Volume Range: Days)
SGM61431XPS8G/TR
Active
SOIC-8 (Exposed Pad)
8
Yes
YesYesYesMSL3
-40℃ to +125℃
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1-24 units : $2.8/unit
25-99 units : $2.4/unit
100-249 units : $2/unit
250-499 units : $1.6/unit
500-999 units : $1.4/unit
1000-9999 units : $1.04/unit
3K-9K : 14 days
10K-99K : 35 days
100K-999K : 70 days
1000K and above : 98 days

* The unit resale price is for reference purposes only. Please contact our distributors for a formal quotation.

** The lead time provided is for reference purposes only and is subject to change based on different circumstances.

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SG Micro Corp (SGMICRO) specializes in the development, manufacturing and sales of high-performance and high-reliability integrated circuits for analog signal conditioning and system power management, offering innovative solutions to a broad range of applications in the industrial, automotive, communication, computing, consumer electronics, and medical equipment markets.
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