MIC5210 MICREL [Micrel Semiconductor], MIC5210 Datasheet

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MIC5210

Manufacturer Part Number
MIC5210
Description
Dual 150mA LDO Regulator Preliminary Information
Manufacturer
MICREL [Micrel Semiconductor]
Datasheet

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MIC5210
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 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’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.
Typical Application
MM8 and Micrel Mini 8 are trademarks of Micrel, Inc.
February 2000
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com
Output A
Output B
tantalum
2.2µF
tantalum
1µF
Low-Noise + Ultralow-Noise (Dual) Regulator
Ordering Information
Other voltages available. Contact Micrel for details.
Part Number
MIC5210-2.7BMM
MIC5210-2.8BMM
MIC5210-3.0BMM
MIC5210-3.3BMM
MIC5210-3.6BMM
MIC5210-4.0BMM
MIC5210-5.0BMM
C
470pF
BYP
1
2
3
4
Enable may be connected to V IN
MIC5210
1
Voltage
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
2.7
2.8
3.0
3.3
3.6
4.0
5.0
8
7
6
5
Enable A
Enable B
Accuracy
Dual 150mA LDO Regulator
1.0%
1.0%
1.0%
1.0%
1.0%
1.0%
1.0%
Preliminary Information
1µF
Junction Temp. Range*
MIC5210
–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
8-lead MSOP
8-lead MSOP
8-lead MSOP
8-lead MSOP
8-lead MSOP
8-lead MSOP
8-lead MSOP
Package
MIC5210
Micrel

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MIC5210 Summary of contents

Page 1

... 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 ...

Page 2

... OUTB INB BYPB 4 5 ENB MIC5210BMM Pin Function Regulator Output A Ground. Regulator Output B Reference Bypass B: Connect external 470pF capacitor to GND to reduce output noise in regulator “B”. May be left open. Enable/Shutdown B (Input): CMOS compatible input. Logic high = enable, logic low or open = shutdown. Do not leave floating. ...

Page 3

... The maximum allowable power A . Exceeding the maximum allowable power dissipa the 8-lead MSOP (MM) is 200 C/W JA Micrel Units % % ppm %/W nV MIC5210 ...

Page 4

... Voltage Drop 100 90 80 1mA 100mA 50 OUT 40 10mA 2 OUT BYP 0 0 0.1 0.2 0.3 0.4 VOLTAGE DROP (V) MIC5210 Power Supply Rejection Ratio OUT -20 -40 -60 - 1mA OUT OUT -100 1E+1 1E+2 1E+3 1E+4 1E+5 1E+6 1E+7 1k 10k 100k 1M 10M 10 100 FREQUENCY (Hz) Power Supply Rejection Ratio 0 ...

Page 5

... Noise Performance (Regulator 100mA 0.1 0.01 1mA OUT OUT 0.001 electrolytic 10mA C = 100pF BYP 0.0001 1E+1 1E+2 1E+3 1E+4 1E+5 1E+6 1E+7 10 100 1k 10k 100k 1M 10M FREQUENCY (Hz) Dropout Voltage vs. Output Current 320 280 +125 C 240 200 +25 C 160 120 – 120 160 OUTPUT CURRENT (mA) MIC5210 ...

Page 6

... MIC5210 Block Diagram INA ENA INB ENB MIC5210 Bandgap Ref. V REF Current Limit Thermal Shutdown Bandgap Ref. V REF Current Limit Thermal Shutdown 6 OUTA OUTB BYPB C BYP GND February 2000 Micrel ...

Page 7

... The capacitor can be reduced to 0.47 F for current below 10mA or 0.33 F for currents below 1mA. No-Load Stability The MIC5210 will remain stable and in regulation with no load (other than the internal voltage divider) unlike many other voltage regulators. This is especially important in CMOS RAM keep-alive applications. ...

Page 8

... This information is believed to be accurate and reliable, however no responsibility is assumed by Micrel for its use nor for any infringement of patents or other rights of third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent right of Micrel Inc. MIC5210 0.199 (5.05) DIMENSIONS: ...

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