MIC33050-AYHL-TR

The MIC33050 is a high-efficiency 600 mA PWM synchronous buck (step-down) regulator with internal inductor featuring HyperLight Load, a switching scheme that offers best-in-class light load efficiency and transient performance while providing very small external components and low output ripple at all loads. The MIC33050 also has a very low typical quiescent current of 20 μA and can achieve over 85% efficiency even at 1 mA. In contrast to traditional light load schemes, the HyperLight Load architecture does not trade off control speed to obtain low standby currents and in doing so, the device only needs a small output capacitor to absorb the load transient as the powered device goes from light load to full load. At higher loads, the MIC33050 provides a nearly constant switching frequency of greater than 4 MHz while providing peak efficiencies greater than 93%. The MIC33050 is available in fixed and adjustable output voltages and comes in a 12-pin 3 mm×3 mm HDFN with a junction operating range of -40℃ to +125℃.

Applications

• MPU Power
• Portable Instrumentation
• Wearable Devices
• Space-Constrained MCU Systems
• RF Modules
• USB-Powered Devices

Key features

• Input Voltage: 2.7V to 5.5V
• 600 mA Output Current
• Fixed and Adjustable Output Voltage Options
• No External Inductor Required
• Ultra-Fast Transient Response
• 20 μA Quiescent Current
• 4 MHz Switching in PWM Mode
• Low Output Voltage Ripple
• >93% Peak Efficiency
• >85% Efficiency at 1 mA
• Micropower Shutdown
• 12-Pin 3 mm x 3 mm HDFN
• -40℃ to +125℃ Junction Temperature Range