MIC5210
Micrel
MIC5210
Dual 150mA LDO Regulator
Preliminary Information
General Description
The MIC5210 is a dual linear voltage regulator with very low
dropout voltage (typically 10mV at light loads and 140mV at
100mA), very low ground current (225碌A at 10mA output), and
better than 1% initial accuracy. It also features individual logic-
compatible enable/shutdown control inputs.
Both regulator outputs can supply up to 150mA at the same
time as long as each regulator鈥檚 maximum junction tempera-
ture is not exceeded.
Designed especially for hand-held battery powered devices,
the MIC5210 can be switched by a CMOS or TTL compatible
logic signal, or the enable pin can be connected to the supply
input for 3-terminal operation. When disabled, power con-
sumption drops nearly to zero. Dropout ground current is
minimized to prolong battery life.
Key features include current limiting, overtemperature shut-
down, and protection against reversed battery.
The MIC5210 is available in 2.7V, 2.8V, 3.0V, 3.3V, 3.6V, 4.0V
and 5.0V fixed voltage configurations. Other voltages are
available; contact Micrel for details.
Features
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Micrel Mini 8鈩?MSOP package
Up to 150mA per regulator output
Low quiescent current
Low dropout voltage
Wide selection of output voltages
Tight load and line regulation
Low temperature coefficient
Current and thermal limiting
Reversed input polarity protection
Zero off-mode current
Logic-controlled electronic enable
Cellular telephones
Laptop, notebook, and palmtop computers
Battery powered equipment
Bar code scanners
SMPS post regulator/dc-to-dc modules
High-efficiency linear power supplies
Applications
Ordering Information
Part Number
MIC5210-2.7BMM
MIC5210-2.8BMM
MIC5210-3.0BMM
MIC5210-3.3BMM
MIC5210-3.6BMM
MIC5210-4.0BMM
MIC5210-5.0BMM
Voltage
2.7
2.8
3.0
3.3
3.6
4.0
5.0
Accuracy
1.0%
1.0%
1.0%
1.0%
1.0%
1.0%
1.0%
Junction Temp. Range*
鈥?0掳C to +125掳C
鈥?0掳C to +125掳C
鈥?0掳C to +125掳C
鈥?0掳C to +125掳C
鈥?0掳C to +125掳C
鈥?0掳C to +125掳C
鈥?0掳C to +125掳C
Package
8-lead MSOP
8-lead MSOP
8-lead MSOP
8-lead MSOP
8-lead MSOP
8-lead MSOP
8-lead MSOP
Other voltages available. Contact Micrel for details.
Typical Application
MIC5210
Output A
1碌F
tantalum
Output B
2.2碌F
tantalum
1
2
3
4
8
7
6
5
Enable A
Enable B
1碌F
C
BYP
470pF
Enable may be connected to VIN
Low-Noise + Ultralow-Noise (Dual) Regulator
MM8 and Micrel Mini 8 are trademarks of Micrel, Inc.
Micrel, Inc. 鈥?1849 Fortune Drive 鈥?San Jose, CA 95131 鈥?USA 鈥?tel + 1 (408) 944-0800 鈥?fax + 1 (408) 944-0970 鈥?http://www.micrel.com
February 2000
1
MIC5210
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