SG-Micro SGM62118 | Demoboard SGM62118 High-Efficiency Buck-Boost Converter

Description

The SGM62118 is a synchronous 4-switch Buck-Boost converter which is suitable for battery operated applications. The device’s programmable light load PFM mode and low quiescent current (18μA, TYP) offer above 90% efficiency in the 10mA to 2A output current range. The output voltage is programmable via external feedback resistor divider.The SGM62118 can operate in Buck, Boost or a novel 4-cycle Buck-Boost mode when the input voltage is close to or equal to the output voltage. The device implements pre-defined mode transition thresholds to avoid undesired toggling within modes to reduce output voltage ripple.The SGM62118 offers various protection features to improve device robustness such as over-temperature, input over-voltage and output over-current protections. These features can protect the device against unexpected system failure.The SGM62118 is available in a small Green WLCSP 2.21×1.40-15B package. High integration provides a compact solution with only six external components.

Features

• 2.2V to 5.5V Input Voltage Range
• 1.8V to 5.2V Output Voltage Range (Adjustable)
• 2A Output Current for VIN ≥ 2.5V and VOUT = 3.3V
• Above 90% Efficiency for IOUT from 10mA to 2A
• High Efficiency over the Entire Load Range
• 18μA (TYP) Quiescent Current
• Programmable Forced PWM Mode and Pulse Frequency Modulation Mode
• Real Buck, Boost and Buck-Boost Modes
• Power Good
• Internal Soft-Start
• Start-up into Pre-Biased Outputs
• Forward and Reverse Current Operation and Current Limit
• OTP, Input OVP and Output OCP Protections
• True Shutdown Function with Load Disconnect
• Available in a Green WLCSP-2.21×1.40-15B Package

Typical applications

• Battery Backup
• System Pre-Regulator, Point-of-Load Regulation, Thermoelectric Devices, Voltage Stabilizer and Converter