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MIC5209YM-TR Datasheet, PDF (1/13 Pages) Micrel Semiconductor – 500mA Low-Noise LDO Regulator | |||
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MIC5209
500mA Low-Noise LDO Regulator
General Description
The MIC5209 is an efï¬cient linear voltage regulator with very
low dropout voltage, typically 10mV at light loads and less
than 500mV at full load, with better than 1% output voltage
accuracy.
Designed especially for hand-held, battery-powered devices,
the MIC5209 features low ground current to help prolong
battery life. An enable/shutdown pin on SO-8 and TO-263-
5 versions can further improve battery life with near-zero
shutdown current.
Key features include reversed-battery protection, current
limiting, overtemperature shutdown, ultra-low-noise capability
(SO-8 and TO-263-5 versions), and availability in thermally
efï¬cient packaging. The MIC5209 is available in adjustable
or ï¬xed output voltages.
For space-critical applications where peak currents do not
exceed 500mA, see the MIC5219.
Features
⢠Meets Intel® Slot 1 and Slot 2 requirements
⢠Guaranteed 500mA output over the full operating
temperature range
⢠Low 500mV maximum dropout voltage at full load
⢠Extremely tight load and line regulation
⢠Thermally-efï¬cient surface-mount package
⢠Low temperature coefï¬cient
⢠Current and thermal limiting
⢠Reversed-battery protection
⢠No-load stability
⢠1% output accuracy
⢠Ultra-low-noise capability in SO-8 and TO-263-5
⢠Ultra-small 3mm x 3mm MLF⢠package
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-efï¬ciency linear power supplies
Typical Applications
MIC5209-2.5BS
1
2
3
VIN
⥠3.0V
VOUT
2.5V ±1%
0.1µF
22µF
tantalum
3.3V Nominal-Input Slot-1
Power Supply
ENABLE
SHUTDOWN
VIN
6V
VOUT
5V
2.2µF
tantalum
MIC5209-5.0BM
1
8
2
7
3
6
4
5
470pF
(OPTIONAL)
Ultra-Low-Noise 5V Regulator
Micrel, Inc. ⢠2180 Fortune Drive ⢠San Jose, CA 95131 ⢠USA ⢠tel + 1 (408) 944-0800 ⢠fax + 1 (408) 474-1000 ⢠http://www.micrel.com
June 2006
1
M9999-060906
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