MIC5396 Datasheet, PDF (1/2 Pages) Micrel Semiconductor – Low-Power Dual 300mA LDO

MIC5396/7/8/9
Low-Power Dual 300mA LDO
Revision 1.1
General Description
Features
The MIC5396/7/8/9 is an advanced dual LDO ideal for
powering general purpose portable devices. The
MIC5396/7/8/9 provides two high-performance,
independent 300mA LDOs in a single package. This
makes it possible to improve system efficiency by
• 2.5V to 5.5V input voltage range
• Independent power inputs
• Output voltage range from 1V to 3.3V
• Two 300mA outputs
providing two independent supply inputs that can be • High output accuracy (±2%)
optimized for each individual LDO. The MIC5396/7/8/9
also features a wide output voltage range down to 1.0V.
Its full feature set and low dropout voltage make it ideal for
battery-powered applications. The MIC5396/7/8/9 offers
2% accuracy, low dropout voltage (160mV at 300mA), and
low ground current (typically 42μA per LDO at full load).
The MIC5396/7/8/9 can also be put into a zero off mode
current state, drawing virtually no current when disabled.
When the MIC5397/9 is disabled an internal resistive load
is automatically applied to the output to discharge the
output capacitor. In addition, the MIC5398/9 offers an
• Low quiescent current – 37µA typical/LDO
• Stable with 1µF ceramic output capacitors
• Low dropout voltage (160mV at 300mA)
• Independent enable pins
• Internal enable pull-down (MIC5398, MIC5399)
• Output discharge circuit (MIC5397, MIC5399)
• Thermal-shutdown protection
• Current-limit protection
• 8-pin 1.2mm x 1.6mm Extra Thin DFN package
internal enable pull-down resistor to ensure that the output
is disabled when the enable is in tri-state mode. These
LDO’s also offer fast transient response and high PSRR
while consuming a minimum operating current. The family
Applications
• Smart phones
is available in a tiny 8-pin, 1.2mm x 1.6mm leadless Extra • DSC, GPS, PMP and PDAs
Thin DFN package.
• Medical devices
Data sheets and support documentation can be found on
Micrel’s web site at www.micrel.com.
• Portable electronics
• 5V systems
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Typical Application
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel [phone] • fax + 1 [phone] • http://www.micrel.com
January 14, 2013
Revision 1.1