MIC5209
500mA Low-Noise LDO Regulator
General Description Features
The MIC5209 is an efcient linear voltage regulator with Output voltage range: 1.8V 15V
very low dropout voltage, typically 10mV at light loads and
Meets Intel Slot 1 and Slot 2 requirements
less than 500mV at full load, with better than 1% output
Guaranteed 500mA output over the full operating
voltage accuracy
temperature range
Designed especially for hand-held, battery-powered
Low 500mV maximum dropout voltage at full load
devices, the MIC5209 features low ground current to help
Extremely tight load and line regulation
prolong battery life. An enable/shutdown pin on SO-8 and
Thermally-efcient surface-mount package
TO-263-5 versions can further improve battery life with
Low temperature coefcient
near-zero shutdown current.
Current and thermal limiting
Key features include reversed-battery protection, current
Reversed-battery protection
limiting, overtemperature shutdown, ultra-low-noise
capability (SO-8 and TO-263-5 versions), and availability
No-load stability
in thermally-efcient packaging. The MIC5209 is available
1% output accuracy
in adjustable or xed output voltages.
Ultra-low-noise capability in SO-8 and TO-263-5
Datasheets and support documentation are available on
Ultra-small 3mm 3mm DFN package
Micrels web site at: www.micrel.com.
Applications
Pentium II Slot 1 and Slot 2 support circuits
Laptop, notebook, and palmtop computers
Cellular telephones
Consumer and personal electronics
SMPS post-regulator/DC-to-DC modules
High-efciency linear power supplies
Typical Application
3.3V Nominal Input Slot 1 Power Supply Ultra-Low Noise 5V Regulator
Intel is a registered trademark of Intel Corporation.
Micrel Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel +1 (408) 944-0800 fax + 1 (408) 474-1000 Micrel, Inc. MIC5209
Ordering Information
Part Number Voltage Junction Temperature Range Package Pb-Free
MIC5209-2.5YS 2.5V SOT-223 X
40C to +125C
MIC5209-3.0YS 3.0V 40C to +125C SOT-223 X
MIC5209-3.3YS 3.3V SOT-223 X
40C to +125C
MIC5209-3.6YS 3.6V 40C to +125C SOT-223 X
MIC5209-4.2YS 4.2V 40C to +125C SOT-223 X
MIC5209-5.0YS 5.0V 40C to +125C SOT-223 X
(1)
MIC5209-1.8YM 1.8V 0C to +125C SOIC-8 X
MIC5209-2.5YM 2.5V SOIC-8 X
40C to +125C
MIC5209-3.0YM 3.0V 40C to +125C SOIC-8 X
MIC5209-3.3YM 3.3V SOIC-8 X
40C to +125C
MIC5209-3.6YM 3.6V 40C to +125C SOIC-8 X
MIC5209-5.0YM 5.0V SOIC-8 X
40C to +125C
Adjustable (2.5V 15.0V) 40C to +125C
MIC5209YM SOIC-8 X
Adjustable (1.8V 2.5V) 0C to +125C
(1)
MIC5209-1.8YU 1.8V 0C to +125C TO-263-5 X
MIC5209-2.5YU 2.5V 40C to +125C TO-263-5 X
MIC5209-3.0YU 3.0V TO-263-5 X
40C to +125C
MIC5209-3.3YU 3.3V 40C to +125C TO-263-5 X
MIC5209-3.6YU 3.6V 40C to +125C TO-263-5 X
MIC5209-5.0YU 5.0V 40C to +125C TO-263-5 X
Adjustable (2.5V 15.0V) 40C to +125C
MIC5209YU TO-263-5 X
Adjustable (1.8V 2.5V) 0C to +125C
Adjustable (2.5V 15.0V) 40C to +125C
MIC5209YML 8-Pin DFN X
Adjustable (1.8V 2.5V) 0C to +125C
Note:
1. Contact Micrel for availability.
May 19, 2015 Revision 4.1
2