MIC5318
High Performance 300mA
µCap ULDO™
General Description
Features
The MIC5318 is a high performance, single output
ultra low drop-out (ULDO™) regulator, offering low
total output noise in an ultra-small Thin MLF®
package. The MIC5318 is capable of sourcing 300mA
output current and offers high PSRR and low output
noise, making it an ideal solution for RF applications.
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Ultra low dropout voltage 110mV @ 300mA
Input voltage range: 2.3V to 6.0V
300mA guaranteed output current
Stable with ceramic output capacitors
Ultra low output noise – 30µVrms
Low quiescent current – 85µA total
High PSRR > 70dB@1kHz
Ideal for battery operated applications, the MIC5318
offers 2% initial accuracy, extremely low dropout
voltage (110mV @ 300mA), and low ground current
(typically 85µA total). The MIC5318 can also be put
into a zero-off-mode current state, drawing no current
when disabled.
Less than 35µs turn-on time
High output accuracy
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± 2% initial accuracy
± 3% over temperature
The MIC5318 is available in the 1.6mm x 1.6mm Thin
MLF® package, occupying only 2.56mm2 of PCB area,
fully a 36% reduction in board area when compared to
SC-70 and 2mm x 2mm MLF® packages.
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Thermal shutdown and current limit protection
Tiny 6-pin 1.6mm x 1.6mm Thin MLF® package
Thin SOT23-5 package
The MIC5318 has an operating junction temperature
range of –40°C to +125°C and is available in fixed and
adjustable output voltages in lead-free (RoHS
compliant) Thin MLF® and Thin SOT23-5 packages.
Applications
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Mobile phones
PDAs
Data sheets and support documentation can be found
on Micrel’s web site at: www.micrel.com.
GPS receivers
Portable electronics
Digital still and video cameras
Typical Application
MIC5318-x.xYMT
VIN
VIN
VOUT
EN
BYP
GND
1µF
1µF
0.01µF
Portable Application
ULDO 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 +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
M9999-092810-B
September 2010