MICROCHIP MIC94355-GYMT-TR

The MIC94325, MIC94345, and MIC94355 Ripple Blocker devices are monolithic integrated circuits that provide low-frequency ripple attenuation (switching noise rejection) to a regulated output voltage. This is important for applications where a DC/DC switching converter is required to lower or raise a battery voltage, but where switching noise cannot be tolerated by sensitive downstream circuits such as in RF applications. The MIC94325/45/55 maintain high power supply ripple rejection (PSRR) with input voltages operating near the output voltage level to improve overall system efficiency. A low-voltage logic enable pin facilitates ON/OFF control at typical GPIO voltage levels. The MIC94325/45/55 operate from an input voltage of 1.8V to 3.6V. Options include fixed (MIC94345/55) or adjustable (MIC94325) output voltages. The MIC94355 version offers an auto-discharge to discharge the output capacitor when the part is disabled. Packaged in a 6-pin 1.6 mm×1.6 mm Thin DFN, the MIC94325/45/55 have a junction operating temperature range of -40℃ to +125℃.

• 1.8V to 3.6V Input Voltage Range
• Active Noise Rejection over a Wide Frequency Band - >50dB from 10 Hz to 5 MHz at 500 mA Load
• Rated to 500 mA Output Current
• Fixed and Adjustable Output Voltages
• Optional Output Auto-Discharge when Disabled
• Current-Limit and Thermal-Limit Protection
• 1.6 mm×1.6 mm, 6-Pin Thin DFN
• Logic-Controlled Enable Pin
• -40℃ to +125℃ Junction Temperature Range

• Smart Phones
• Tablet PC/Notebooks and Webcams
• Digital Still and Video Cameras
• Global Positioning Systems
• Mobile Computing
• Automotive and Industrial Applications