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reference designSGM61032B | Demoboard SGM61032BEVM

SG-Micro SGM61032B | Demoboard SGM61032BEVM

Low Voltage 3A High Efficiency Synchronous Buck Converter

Overview

TopologyBuck Converter
Input voltage2.5-5.5 V
Output 11.8 V / 3 A
IC revision00

Description

The SGM61032 is a high efficiency and miniature size synchronous Buck converter for low input voltage applications. It is a perfect solution for compact designs. The 2.5V to 5.5V input voltage range is suitable for almost all available battery-powered applications. It operates in PWM mode at 1.5MHz (TYP) in the medium to heavy load range and automatically enters or exits the power-save mode (PSM) at light loads to maintain its high efficiency. During shutdown, the quiescent current is 0.02μA (TYP).This device is based on an adaptive off-time architecture, but still allows a wide range of output capacitors from 10μF to 150μF and even more. This flexibility makes the device a good choice for system power rails supply. It also supports 100% duty cycle operation and enters path-through mode (PTM) when certain conditions are met. At this mode, the quiescent current is reduced to 32μA. The adaptive off-time architecture provides excellent output voltage accuracy and superb load transient response. Only external feedforward compensation capacitor is needed to obtain faster response.The SGM61032 is available in a Green SOT-563-6 package.

Features

  • 2.5V to 5.5V Input Voltage Range
  • Adjustable Output Voltage from 0.6V to VIN
  • Adaptive Off-Time Architecture
  • Up to 95% Efficiency
  • Low RDSON Internal Switches: 55mΩ/25mΩ
  • 42μA Quiescent Current
  • 32μA Quiescent Current in Path-Through Mode
  • Power-Save Mode at Light Load
  • Low Dropout with 100% Duty Cycle
  • PG Output (Except for the SGM61032A)
  • Internal Soft-Start with Pre-biased Startup
  • Output Discharge at Shutdown
  • Hiccup Mode OCP/Short-Circuit Protection
  • Thermal Shutdown Protection
  • Available in a Green SOT-563-6 Package

Typical applications

  • Set-Top Boxes, Multi-Function Printers
  • Industrial and Commercial Applications
  • General Purpose Point-of-Load Power Supplies
  • Potable Battery-Powered Applications

More information

Parts approved by SG-Micro

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
L(µH)
IRP,40K(A)
ISAT,30%(A)
RDC typ.(mΩ)
fres(MHz)
VOP(V)
Mount
SamplesAvailability & Sample
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74438356010
SPECWE-MAPI SMT Power Inductor, 1 µH, 10.1 A
Simu­lation
Availability
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Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-MAPI SMT Power Inductor
Inductance1 µH
Performance Rated Current10.1 A
Saturation Current @ 30%11.5 A
DC Resistance12 mΩ
Self Resonant Frequency55 MHz
Operating Voltage80 V
MountSMT 
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