MIC5210 Datasheet, PDF (1/8 Pages) Micrel Semiconductor – Dual 150mA LDO Regulator Preliminary Information

MIC5210
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 (225µA 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’s 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
• Micrel Mini 8™ 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
Applications
• 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
Micrel
Ordering Information
Part Number
Voltage Accuracy Junction Temp. Range*
MIC5210-2.7BMM 2.7
1.0%
–40°C to +125°C
MIC5210-2.8BMM 2.8
1.0%
–40°C to +125°C
MIC5210-3.0BMM 3.0
1.0%
–40°C to +125°C
MIC5210-3.3BMM 3.3
1.0%
–40°C to +125°C
MIC5210-3.6BMM 3.6
1.0%
–40°C to +125°C
MIC5210-4.0BMM 4.0
1.0%
–40°C to +125°C
MIC5210-5.0BMM 5.0
1.0%
–40°C to +125°C
Other voltages available. Contact Micrel for details.
Package
8-lead MSOP
8-lead MSOP
8-lead MSOP
8-lead MSOP
8-lead MSOP
8-lead MSOP
8-lead MSOP
Typical Application
Output A
1µF
tantalum
Output B
2.2µF
tantalum
MIC5210
1
8
2
7 ^{Enable A}
3
6
4
C_BYP
470pF
5 ^{Enable B}
1µF
Enable may be connected to VIN
Low-Noise + Ultralow-Noise (Dual) Regulator
MM8 and Micrel Mini 8 are trademarks of Micrel, Inc.
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 [phone] • fax + 1 [phone] • http://www.micrel.com
February 2000
1
MIC5210