MIC5201 Datasheet, PDF (1/12 Pages) Micrel Semiconductor – 200mA Low-Dropout Voltage Regulator

MIC5201
Micrel
MIC5201
200mA Low-Dropout Voltage Regulator
General Description
The MIC5201 is an efficient linear voltage regulator with very
low dropout voltage (typically 17mV at light loads and 200mV
at 100mA), and very low ground current (1mA at 100mA
output), offering better than 1% initial accuracy with a logic
compatible on-off switching input.
Designed especially for hand-held battery powered devices,
the MIC5201 can be switched by a CMOS or TTL compatible
enable signal. This enable control may be connected directly
to V_IN if unneeded. When disabled, power consumption
drops nearly to zero. The ground current of the MIC5201
increases only slightly in dropout, further prolonging battery
life. Key MIC5201 features include current limiting,
overtemperature shutdown, and protection against reversed
battery.
The MIC5201 is available in several fixed voltages and
accuracy configurations. It features the same pinout as the
LT1121 with better performance. Other options are available;
contact Micrel for details.
Features
• High output voltage accuracy
• Variety of output voltages
• Guaranteed 200mA output
• Low quiescent current
• Low dropout voltage
• Extremely tight load and line regulation
• Very low temperature coefficient
• Current and thermal limiting
• Reversed-battery protection
• Load-dump protection (fixed voltage versions)
• Zero off-mode current
• Logic-controlled electronic enable
• Available in SO-8 and SOT-223 packages
Applications
• Cellular telephones
• Laptop, notebook, and palmtop computers
• Battery powered equipment
• PCMCIA V_CC and V_PP regulation/switching
• Bar code scanners
• SMPS post-regulator/ dc-to-dc modules
• High-efficiency linear power supplies
Ordering Information
Part Number
Voltage Junction Temp. Range*
MIC5201BM
Adj
–40°C to +125°C
MIC5201-3.0BM
3.0
–40°C to +125°C
MIC5201-3.3BM
3.3
–40°C to +125°C
MIC5201-5.0BM
5.0
–40°C to +125°C
MIC5201-3.0BS
3.0
–40°C to +125°C
MIC5201-3.3BS
3.3
–40°C to +125°C
MIC5201-4.8BS
4.85
–40°C to +125°C
MIC5201-5.0BS
5.0
–40°C to +125°C
Other voltages available. Contact Micrel for details.
* Junction Temperature.
Package
SO-8
SO-8
SO-8
SO-8
SOT-223
SOT-223
SOT-223
SOT-223
Typical Application
ENABLE
SHUTDOWN
MIC5201-3.3
IN
OUT
EN
GND
V_OUT
3.3V
1µF
MM8 is a trademark of Micrel, Inc.
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 [phone] • fax + 1 [phone] • http://www.micrel.com
July 1998
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MIC5201