MIC5255-2.9YD5 반도체 회로 부품 판매점
150mA Low Noise UCap CMOS LDO
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 Micrel Semiconductor |
MIC5255
Micrel
MIC5255
150mA Low Noise µCap CMOS LDO
General Description
The MIC5255 is an efficient, precise CMOS voltage regulator
optimized for ultra-low-noise applications. It offers 1% initial
accuracy, extremely-low dropout voltage (135mV at 150mA)
and low ground current (typically 90µA). The MIC5255 pro-
vides a very-low-noise output, ideal for RF applications
where a clean voltage source is required. A noise bypass pin
is also available for further reduction of output noise.
Designed specifically for handheld and battery-powered de-
vices, the MIC5255 provides a TTL-logic-compatible enable
pin. When disabled, power consumption drops nearly to zero.
The MIC5255 also works with low-ESR ceramic capacitors,
reducing the amount of board space necessary for power
applications, critical in handheld wireless devices.
Key features include current limit, thermal shutdown, faster
transient response, and an active clamp to speed up device
turn-off. Available in the 6-pin 2mm × 2mm MLF™ package,
the IttyBitty® SOT-23-5 package and the new Thin SOT-23-
5, which offers the same footprint as the standard IttyBitty®
SOT-23-5, but only 1mm tall. The MIC5255 offers a range of
output voltages.
All support documentation can be found on Micrel’s web
site at www.micrel.com.
Features
• Input voltage range: 2.7V to 6.0V
• Thin SOT package: 1mm height SOT-23-5
• Ultra-low output noise: 30µV(rms)
• Stability with ceramic output capacitors
• Ultra-low dropout: 135mV @ 150mA
• High output accuracy:
1.0% initial accuracy
2.0% over temperature
• Low quiescent current: 90µA
• Tight load and line regulation
• TTL-Logic-controlled enable input
• “Zero” off-mode current
• Thermal shutdown and current limit protection
Applications
• Cellular phones and pagers
• Cellular accessories
• Battery-powered equipment
• Laptop, notebook, and palmtop computers
• Consumer/personal electronics
Typical Application
CIN = 1.0µF VIN
Ceramic
Enable
Shutdown
EN
EN (pin 3) may be
connected directly
to IN (pin 1).
MIC5255-x.xBM5
15
2
34
VOUT
COUT = 1.0µF
Ceramic
ENABLE
SHUTDOWN
CBYP = 0.01µF
VIN
EN
MIC5255-x.xBML
16
25
34
CBYP
(optional)
Ultra-Low-Noise Regulator Application
VOUT
COUT
IttyBitty is a registered trademark of Micrel, Inc.
MicroLeadFrame and MLF are trademarks of Amkor Technology.
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000• http://www.micrel.com
August, 2004
1
M0385-080204
MIC5255
Ordering Information
Part Number
Standard
Pb-Free
Marking
Voltage
Standard Pb-Free
MIC5255-2.5BM5 MIC5255-2.5YM5 LW25 LW25 2.5V
MIC5255-2.6BM5 MIC5255-2.6YM5 LW26 LW26 2.6V
MIC5255-2.7BM5 MIC5255-2.7YM5 LW27 LW27 2.7V
MIC5255-2.8BM5 MIC5255-2.8YM5 LW28 LW28 2.8V
MIC5255-2.8BML MIC5255-2.8YML W28 W28
2.8V
MIC5255-2.85BM5 MIC5255-2.85YM5 LW2J LW2J
2.85V
MIC5255-2.9BM5 MIC5255-2.9YM5 LW29 LW29
2.9V
MIC5255-3.0BM5 MIC5255-3.0YM5 LW30 LW30
3.0V
MIC5255-3.0BML MIC5255-3.0YML W30 W30
3.0V
MIC5255-3.1BM5 MIC5255-3.1YM5 LW31 LW31
3.1V
MIC5255-3.2BM5 MIC5255-3.2YM5 LW32 LW32 3.2V
MIC5255-3.3BM5 MIC5255-3.3YM5 LW33 LW33 3.3V
MIC5255-2.6BD5 MIC5255-2.6YD5 NW26 NW26 2.6V
MIC5255-2.7BD5 MIC5255-2.7YD5 NW27 NW27 2.7V
MIC5255-2.8BD5 MIC5255-2.8YD5 NW28 NW28 2.8V
MIC5255-2.85BD5 MIC5255-2.85YD5 NW2J NW2J 2.85V
MIC5255-2.9BD5 MIC5255-2.9YD5 NW29 NW2J 2.9V
MIC5255-3.0BD5 MIC5255-3.0YD5 NW30 NW2J 3.0V
MIC5255-3.3BD5 MIC5255-3.3YD5 NW33 NW2J 3.3V
Temperature 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
–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
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
Micrel
Package
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
6-Pin 2×2 MLF™
SOT-23-5
SOT-23-5
SOT-23-5
6-Pin 2×2 MLF™
SOT-23-5
SOT-23-5
SOT-23-5
TSOT-23-5
TSOT-23-5
TSOT-23-5
TSOT-23-5
TSOT-23-5
TSOT-23-5
TSOT-23-5
August, 2004
2
M0385-080204
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제조업체: Micrel Semiconductor
( micrel )
MIC5255-2.9YD5 cmos
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