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reference designSGM61433 | Demoboard SGM61433 Demo Board

SG-Micro SGM61433 | Demoboard SGM61433 Demo Board

4.5V to 42V Input, 3.5A Buck Converter

Overview

TopologyBuck Converter
Input voltage4.5-42 V
Switching frequency100-2500 kHz
Output 13.3 V / 3.5 A
IC revision1

Description

The SGM61433 is a current mode controlled non-synchronous Buck converter with 4.5V to 42V input range and 3.5A continuous output current. A low RDSON N-MOSFET is integrated as high-side switch. The quiescent current is as low as 148μA. The shutdown current drops to 2.65μA during shutdown (EN = low). The internal under-voltage lockout (UVLO) threshold is 4.2V and can be adjusted (increased) by an external resistor divider. An internal soft-start circuit controls the output voltage start-up ramp. Switching frequency can be selected over a wide range (0.1MHz to 2.5MHz) to allow desired tradeoff among efficiency, component sizes and conversion voltage ratio. Protection against over-voltage transient is provided to limit the startup or other transient overshoots. Secure operation in overload conditions is ensured by cycle-by-cycle current limit, frequency fold-back and thermal shutdown protection.The SGM61433 is available in a Green SOIC-8 (Exposed Pad) package.

Features

  • 4.5V to 42V Input Voltage Range
  • 0.8V to 36V Adjustable Output Voltage Range
  • Integrated 68mΩ High-side MOSFET Supports up to 3.5A Continuous Output Current
  • Programmable Switching Frequency: 100kHz to 2500kHz
  • Ultra-Low Quiescent Current: 148μA (TYP)
  • Low Shutdown Current: 2.6μA (TYP)
  • Power-Save Mode for High Light Load Efficiency
  • Frequency Synchronization to External Clock
  • Programmable UVLO Threshold
  • Over-Voltage Transient Protection
  • Cycle-by-Cycle Current Limit
  • Frequency Fold-Back Protection
  • Integrated BOOT Recharge FET for Low Light Load Dropout
  • Thermal Shutdown (+176℃)
  • Available in a Green SOIC-8 (Exposed Pad) Package

Typical applications

  • Battery Chargers
  • Industrial Power Supplies

More information

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Data­sheet
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Status
Product series
L(µH)
IRP,40K(A)
ISAT,10%(A)
ISAT,30%(A)
RDC(mΩ)
fres(MHz)
Material
Qty.
SamplesAvailability & Sample
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744325550
SPECWE-HCI SMT Flat Wire High Current Inductor, 5.5 µH, 12 A
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Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-HCI SMT Flat Wire High Current Inductor
Inductance5.5 µH
Performance Rated Current12 A
Saturation Current @ 10%4.5 A
Saturation Current @ 30%12 A
DC Resistance10.3 mΩ
Self Resonant Frequency30 MHz
MaterialSuperflux 
Packaging Unit700 
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