MIC5219 Micrel Semiconductor, MIC5219 Datasheet
MIC5219
Manufacturer Part Number
MIC5219
Description
500mA-Peak Output LDO Regulator
Manufacturer
Micrel Semiconductor
Datasheet
1.MIC5219.pdf
(12 pages)
Available stocks
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MIC5219-1.8YM5
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MICREL/麦瑞
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MIC5219-2.5BMM
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MIC5219-2.5YM5
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MICREL
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MIC5219-2.6BM5
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MICREL
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MIC5219-2.6BM5TR
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MICREL/麦瑞
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Part Number:
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MICREL
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6 550
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Part Number:
MIC5219-2.7BM5
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MICREL
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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
startup 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 shut-
down, and low noise performance with an ultra-low-noise
option.
The MIC5219 is available in adjustable or fixed output volt-
ages in space-saving SOT-23-5 and MM8™ 8-lead power
MSOP packages. For higher power requirements see the
MIC5209 or MIC5237.
July 2000
Typical Applications
MIC5219
SHUTDOWN
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com
ENABLE
V
OUT
V
tantalum
IN
6V
5V
2.2µF
5V Ultra-Low-Noise Regulator
470pF
1
2
3
4
MIC5219-5.0BMM
8
7
6
5
1
Features
• Guaranteed 500mA-peak output over the full operating
• 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 V
• SMPS post-regulator/dc-to-dc modules
• High-efficiency linear power supplies
temperature range
500mA-Peak Output LDO Regulator
SHUTDOWN
ENABLE
3.3V Ultra-Low-Noise Regulator
CC
V
IN
and V
4V
MIC5219
MIC5219-3.3BM5
PP
1
2
3
regulation and switching
5
4
470pF
2.2µF
tantalum
V
OUT
3.3V
MIC5219
Micrel
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