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MIC5219-2.7BM5 参数 Datasheet PDF下载

MIC5219-2.7BM5图片预览
型号: MIC5219-2.7BM5
PDF下载: 下载PDF文件 查看货源
内容描述: 值为500mA的峰值输出LDO稳压器 [500mA-Peak Output LDO Regulator]
分类和应用: 稳压器
文件页数/大小: 13 页 / 97 K
品牌: MICREL [ MICREL SEMICONDUCTOR ]
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MIC5219
Micrel
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
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.
Features
• 500mA Output current capability
• SOT-23-5 package - 500mA peak
• 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 V
CC
and V
PP
regulation and switching
SMPS post-regulator/dc-to-dc modules
High-efficiency linear power supplies
Typical Applications
MIC5219-5.0BMM
ENABLE
SHUTDOWN
1
2
3
4
8
7
6
5
MIC5219-3.3BM5
V
IN
4V
ENABLE
SHUTDOWN
1
2
3
4
5
V
IN
6V
V
OUT
5V
2.2µF
tantalum
V
OUT
3.3V
2.2µF
tantalum
470pF
470pF
5V Ultra-Low-Noise Regulator
3.3V Ultra-Low-Noise Regulator
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com
April 2001
1
MIC5219