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MIC943x0 Ripple Blocker™ IC

Ripple Blocker™ integrated circuit with low-frequency ripple attenuation from Micrel
Micrel's MIC943x0 Ripple Blocker™ ICMicrel's 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. MIC94310 Datasheet

The MIC94300 is an integrated load switch that incorporates Micrel's Ripple Blocker™ active filter technology. The MIC94300 provides high-frequency ripple attenuation (switching noise rejection) for applications where a switching noise cannot be tolerated by sensitive downstream circuits such as in RF applications. A low-voltage logic enable pin disconnects the pass element and places the MIC94300 into a low current-shutdown state when disabled. MIC94300 Datasheet


Features
  • 1.8 V to 3.6 V input voltage range
  • Active noise rejection over a wide frequency band
    • >50 dB from 10 Hz to 10 MHz at 200 mA load
  • Rated to 200 mA output current
  • Fixed output voltages
  • Current-limit and thermal-limit protected
  • Ultra-small 0.88 mm x 0.88 mm 4-ball CSP
  • 1.2 mm x 1.6 mm, 4-pin Thin MLF®
  • Logic-controlled enable pin
  • −40°C to +125°C junction temperature range

Digi-Key P/N Manufacturer P/N Description
576-4011-1-ND MIC94300YMT TR IC LOAD SWITCH 200MA 4MLF
576-4012-1-ND MIC94310-GYMT TR IC REG LDO 200MA 1.8V 4MLF
576-4338-1-ND MIC94310-4YCS TR IC REG LDO 1.2V .2A 4CSP
576-4339-1-ND MIC94310-FYCS TR IC REG LDO 1.5V .2A 4CSP
576-4353-1-ND MIC94310-PYCS TR IC REG LDO 3V .2A 4CSP
576-4354-1-ND MIC94310-SYCS TR IC REG LDO 3.3V .2A 4CSP