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MIC5311

Micrel Semiconductor
Part Number MIC5311
Manufacturer Micrel Semiconductor
Description LowQ Mode Dual 300mA LDO
Published Feb 26, 2007
Detailed Description MIC5311 LowQ™ Mode Dual 300mA LDO General Description The MIC5311 is a high performance, dual µCap low dropout regulato...
Datasheet PDF File MIC5311 PDF File

MIC5311
MIC5311

Overview
MIC5311 LowQ™ Mode Dual 300mA LDO General Description The MIC5311 is a high performance, dual µCap low dropout regulator offering ultra-low operating current and a second, even lower operating current mode, LowQ™ mode, reducing operating current by 75%.
Each regulator can source up to 300mA of output current maximum.
Ideal for battery operated applications, the MIC5311 offers 1% accuracy, extremely low dropout voltage (60mV @ 150mA), and low ground current (typically 28µA total).
When put into LowQ™ mode, the internal current draw drops down to 7µA total.
The MIC5311 also comes equipped with a TTL logic compatible enable pin that allows the part to be put into a zero-offmode current state, drawing no current when disabled.
The MIC5311 is a µCap design, operating with very small ceramic output capacitors for stability, reducing required board space and component cost.
The MIC5311 is available in fixed output voltages in the 3mm x 3mm MLF-10 leadless package.
Data sheets and support documentation can be found on Micrel’s web site at www.
micrel.
com.
Features • Input voltage range: 2.
5V to 5.
5V • LowQ™ Mode - 7µA total quiescent current - 10mA output current capable LowQ™ mode - Logic level control with external pin • Stable with ceramic output capacitor • 2 LDO Outputs – 300mA each • Tiny 3mm x 3mm MLF™-10 package • Low dropout voltage of 60mV @ 150mA • Ultra-low quiescent current of 28µA total in Full Current Mode • High output accuracy - ±1.
0% initial accuracy - ±2.
0% over temperature • Thermal Shutdown Protection • Current Limit Protection Applications • Cellular/PCS phones • Wireless modems • PDAs • MP3 Players Typical Application VIN EN1 EN2 LOWQ BYP GND VOUT1 VOUT2 VCORE VI/O Baseband µProcessor MIC5311-xxBML MLF and MicroLeadFrame are trademarks of Amkor Technology, 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 March 2006 M9999-032706 (408) 955-1690 Micrel, In...


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