MIC5528 Datasheet, PDF (1/14 Pages) Micrel Semiconductor – High-Performance 500mA LDO

MIC5528
High-Performance 500mA LDO
in Thin and Extra Thin DFN Packages
General Description
The MIC5528 is a low-power, µCap, low dropout regulator
designed for optimal performance in a very-small footprint.
It is capable of sourcing up to 500mA of output current
while only drawing 38µA of operating current. This high-
performance LDO is a µCap design in a thermally
enhanced 1.2mm × 1.2mm extra thin (0.4mm ht.) DFN
package. It operates with small ceramic output capacitor
for stability, thereby reducing required board space.
Ideal for battery-operated applications, the MIC5528 offers
±2% accuracy, extremely low dropout voltage (260mV @
500mA), and can regulate output voltages down to 1.0V.
Equipped with a TTL logic-compatible enable pin, the
MIC5528 can be put into a zero-off-mode current state,
drawing no current when disabled.
The MIC5528 is a µCap design, operating with very small
ceramic output capacitors for stability, reducing required
board space and component cost for space-critical
applications. The MIC5528 has an operating junction
temperature range of –40°C to 125°C.
Datasheets and support documentation are available on
Micrel’s web site at: www.micrel.com.
Features
• Input voltage range: 2.5V to 5.5V
• Fixed output voltages down to 1.0V
• ±2% Room temperature accuracy
• Low quiescent current 38µA
• Stable with 2.2µF ceramic output capacitors
• Low dropout voltage 260mV @ 500mA
• Auto discharge and internal enable pulldown
• Thermal-shutdown and current-limit protection
• 6-pin 1.2mm × 1.2mm extra thin DFN package
• 6-pin 1.2mm × 1.2mm thin DFN package
Applications
• Portable communication equipment
• DSC, GPS, PMP, and PDAs
• Portable medical devices
• 5V POL applications
Typical Application
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel [phone] • fax + 1 [phone] • http://www.micrel.com
May 5, 2014
Revision 1.1