MIC94300 Datasheet, PDF (1/13 Pages) Micrel Semiconductor – 200mA Switch with Ripple Blocker™ Technology

MIC94300
200mA Switch
with Ripple Blocker™ Technology
General Description
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.
The MIC94300 operates from an input voltage of 1.8V to
3.6V, allowing true load switching of low-voltage power
rails in any electronic device. The output voltage (V_OUT) is
set at a fixed drop (typically 170mV) from the input voltage
(V_OUT = V_IN – 170mV). This maintains high efficiency
independent of given load conditions and currents.
Packaged in a 0.88mm x 0.88mm 4-ball CSP or 4-pin
1.2mm x 1.6mm Thin MLF^® package, the MIC94300 has a
junction operating temperature range of −40°C to +125°C.
Data sheets and support documentation can be found 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
− >60dB from 40kHz to 5MHz
• Rated to 200mA output current
• Current-limit and thermal-limit protected
• Ultra-small 0.88mm x 0.88mm 4-ball CSP
• 1.2mm x 1.6mm, 4-pin Thin MLF^®
• Logic-controlled enable pin
• −40°C to +125°C junction temperature range
Applications
• Smart phones
• Tablet PC/notebooks and webcams
• Digital still and video cameras
• Videoconferencing
• Bar-code scanners
• Global positioning systems
• Automotive and industrial applications
_________________________________________________________________________________________________
Typical Application
PSRR C_OUT = 1µF
0
-10
-20
-30
-40
V_IN = 3.6V
-50
-60
V_IN = 1.8V
-70
-80
V_IN = 2.5V
-90 ^{VIN = VIN(NOM) + 40mVpp}
LOAD = 100mA
-100
1.E1+001 1.1E0+002 1.E1K+03 1.1E0+K04 11.0E0+K05 1.1EM+06 11.E0M+07
FREQUENCY (Hz)
Ripple Blocker is a trademark of Micrel, Inc
MLF and MicroLeadFrame are registered trademarks of Amkor Technology, Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel [phone] • fax + 1 [phone] • http://www.micrel.com
February 2012
M9999-020312-A