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MIC94310-FYCS Datasheet(PDF) 1 Page - Micrel Semiconductor |
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MIC94310-FYCS Datasheet(HTML) 1 Page - Micrel Semiconductor |
1 / 15 page MIC94310 200mA LDO with Ripple Blocker™ Technology General Description The MIC94310 Ripple Blocker™ is a monolithic integrated circuit that provides 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 MIC94310 maintains 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 MIC94310 operates from an input voltage of 1.8V to 3.6V. Packaged in a 0.88mm × 0.88mm 4-ball WLCSP, a 4-pin 1.2mm × 1.6mm Thin DFN, or a 5-pin SOT-23, the MIC94310 has a junction operating temperature range of –40 °C to +125°C. Datasheets and support documentation are available on Micrel’s web site at: www.micrel.com. Features • 1.8V to 3.6V input voltage range • Active noise rejection over a wide frequency band − >50dB from 10Hz to 10MHz at 200mA load • Rated to 200mA output current • Fixed output voltages • Current-limit and thermal-limit protected • Ultra-small 0.88mm × 0.88mm 4-ball WLCSP • 1.2mm × 1.6mm 4-pin Thin DFN • 5-pin SOT-23 • Logic-controlled enable pin − −40°C to +125°C junction temperature range Applications • Smartphones/Smart books • Tablet PC/notebooks and webcams • Digital still and video cameras • Global positioning systems • Mobile computing • Automotive and industrial applications Typical Application PSRR COUT = 1µF -120 -100 -80 -60 -40 -20 0 1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07 FREQUENCY (Hz) IOUT = 200mA IOUT = 100mA IOUT = 10mA VIN = 2.5V + 40mVpp VOUT = 1.8V 10 100 1K 10K 100K 1M 10M Ripple Blocker is a trademark of Micrel, Inc. Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com September 11, 2014 Revision 2.1 |
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