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MIC5219-3.6BM5 Datasheet(PDF) 1 Page - Micrel Semiconductor

Part # MIC5219-3.6BM5
Description  500mA-Peak Output LDO Regulator
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Manufacturer  MICREL [Micrel Semiconductor]
Direct Link  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

MIC5219-3.6BM5 Datasheet(HTML) 1 Page - Micrel Semiconductor

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June 2009
1
M0371-061809
Micrel, Inc.
MIC5219
Typical Applications
MIC5219
500mA-Peak Output LDO Regulator
General Description
The MIC5219 is an efficient linear voltage regulator with high
peak output current capability, very-low-dropout voltage, and
better than 1% output voltage accuracy. Dropout is typically
10mV at light loads and less than 500mV at full load.
The MIC5219 is designed to provide a peak output current for
start-up conditions where higher inrush current is demanded.
It features a 500mA peak output rating. Continuous output
current is limited only by package and layout.
The MIC5219 can be enabled or shut down by a CMOS or
TTL compatible signal. When disabled, power consumption
drops nearly to zero. Dropout ground current is minimized to
help prolong battery life. Other key features include reversed-
batteryprotection,currentlimiting,overtemperatureshutdown,
and low noise performance with an ultra-low-noise option.
The MIC5219 is available in adjustable or fixed output volt-
ages in the space-saving 6-pin (2mm × 2mm) MLF®, 6-pin
(2mm × 2mm) Thin MLF® SOT-23-5 and MM8® 8-pin power
MSOP packages. For higher power requirements see the
MIC5209 or MIC5237.
All support documentation can be found on Micrel’s web site
at www.micrel.com.
Features
• 500mA output current capability
SOT-23-5 package - 500mA peak
2mm×2mm MLF® package - 500mA continuous
2mm×2mm Thin MLF® package - 500mA
continuous
MSOP-8 package - 500mA continuous
• Low 500mV maximum dropout voltage at full load
• Extremely tight load and line regulation
• Tiny SOT-23-5 and MM8™ power MSOP-8 package
• Ultra-low-noise output
• Low temperature coefficient
• Current and thermal limiting
• Reversed-battery protection
• CMOS/TTL-compatible enable/shutdown control
• Near-zero shutdown current
Applications
• Laptop, notebook, and palmtop computers
• Cellular telephones and battery-powered equipment
• Consumer and personal electronics
• PC Card VCC and VPP regulation and switching
• SMPS post-regulator/DC-to-DC modules
• High-efficiency linear power supplies
1
2
3
4
8
7
6
5
MIC5219-5.0BMM
2.2µF
tantalum
VOUT5V
VIN6V
ENABLE
SHUTDOWN
470pF
5V Ultra-Low-Noise Regulator
1
5
2
3
4
2.2µF
tantalum
470pF
VOUT3.3V
MIC5219-3.3BM5
VIN4V
ENABLE
SHUTDOWN
3.3V Ultra-Low-Noise 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
MM8 is a registered trademark of Micrel, Inc.
MicroLeadFrame and MLF are registered trademarks of Amkor Technology, Inc..
ENABLE
SHUTDOWN
MIC5219-x.xYML
1
EN
6
CBYP
(optional)
VIN
VOUT
COUT
5
4
2
3
Ultra-Low-Noise Regulator (Fixed)
ENABLE
SHUTDOWN
MIC5219YMT
1
EN
6
470pF
VIN
VOUT
2.2µF
5
4
2
3
R1
R2
+
Ultra-Low-Noise Regulator (Adjustable)


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