MIC5216 Datasheet, PDF (1/12 Pages) Micrel Semiconductor – 500mA-Peak Output LDO Regulator Preliminary Information

MIC5216
Micrel
MIC5216
500mA-Peak Output LDO Regulator
Preliminary Information
General Description
The MIC5216 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 MIC5216 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 MIC5216 has an internal undervoltage monitor with a flag
output. It also can be enabled or shutdown 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.
The MIC5216 is available in fixed output voltages in space-
saving SOT-23-5 and MM8™ 8-lead power MSOP pack-
ages. For higher power requirements see the MIC5209 or
MIC5237.
Features
• Error Flag indicates undervoltage fault
• Guaranteed 500mA-peak output over the full operating
temperature range
• Low 500mV maximum dropout voltage at full load
• Extremely tight load and line regulation
• Tiny SOT-23-5 and MM8™ power MSOP-8 package
• 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
Ordering Information
Part Number
MIC5216-3.0BMM
MIC5216-3.3BMM
MIC5216-3.6BMM
MIC5216-5.0BMM
MIC5216-3.0BM5
MIC5216-3.3BM5
MIC5216-3.6BM5
MIC5216-5.0BM5
Marking
—
—
—
—
LH30
LH33
LH36
LH50
Volts
3.0V
3.3V
3.6V
5.0V
3.0V
3.3V
3.6V
5.0V
Junction Temp. Range
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
Package
MSOP-8
MSOP-8
MSOP-8
MSOP-8
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
Typical Applications
V_IN
6V
100k
Flag
V_OUT
5V
MIC5216-5.0BMM
1
8
2
7
3
6
4
5
1.0µF
tantalum
5V Low-Noise Regulator
V_IN
4V
ENABLE
SHUTDOWN
MIC5216-3.3BM5
1
5
2
100k
3
4
V_OUT
3.3V
1.0µF
tantalum
Flag
3.3V Low-Noise Regulator
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 [phone] • fax + 1 [phone] • http://www.micrel.com
January 2000
1
MIC5216