MIC5219-2.7BM5 Micrel Semiconductor, MIC5219-2.7BM5 Datasheet
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MIC5219-2.7BM5
Manufacturer Part Number
MIC5219-2.7BM5
Description
Manufacturer
Micrel Semiconductor
Specifications of MIC5219-2.7BM5
Case
SOT-23
Date_code
04
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MIC5219-2.7BM5
Manufacturer:
MICREL
Quantity:
496
Part Number:
MIC5219-2.7BM5
Manufacturer:
MICREL/麦瑞
Quantity:
20 000
Company:
Part Number:
MIC5219-2.7BM5TR
Manufacturer:
MICREL
Quantity:
16 184
MM8 is a trademark of Micrel, Inc.
MicroLeadFrame and MLF are trademarks of Amkor Technology.
General Description
The MIC5219 is an effi cient 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-
battery protection, current limiting, overtemperature shutdown,
and low noise performance with an ultra-low-noise option.
The MIC5219 is available in adjustable or fi xed output voltages
in the space-saving 6-pin (2mm × 2mm) 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.
January 2005
Typical Applications
Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
SHUTDOWN
E N A B L E
V
5V Ultra-Low-Noise Regulator
OUT
V
tantalum
IN
6V
5V
2.2µF
SHUTDOWN
ENABLE
470pF
1
2
3
4
MIC5219-5.0BMM
V
EN
IN
Ultra-Low-Noise Regulator
8
7
6
5
MIC5219-x.xBML
1
2
3
1
Features
• 500mA output current capability
• 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 coeffi cient
• 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 V
• SMPS post-regulator/DC-to-DC modules
• High-effi ciency linear power supplies
SOT-23-5 package - 500mA peak
2mm×2mm MLF package - 500mA continuous
MSOP-8 package - 500mA continuous
6
5
4
SHUTDOWN
500mA-Peak Output LDO Regulator
E N A B L E
V
C
(optional)
3.3V Ultra-Low-Noise Regulator
CC
IN
BYP
4V
and V
MIC5219-3.3BM5
MIC5219
MIC5219
PP
1
2
3
C
regulation and switching
OUT
V
OUT
4
5
470pF
2.2µF
tantalum
V
OUT
3.3V
M0371-121003