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PDF MIC5209-2.5BM Data sheet ( Hoja de datos )

Número de pieza MIC5209-2.5BM
Descripción 500mA Low-Noise LDO Regulator
Fabricantes Micrel Semiconductor　
Logotipo Micrel Semiconductor Logotipo



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No Preview Available ! MIC5209-2.5BM Hoja de datos, Descripción, Manual

MIC5209
Micrel
MIC5209
500mA Low-Noise LDO Regulator
General Description
The MIC5209 is an efficient linear voltage regulator with very
low dropout voltage, typically 10mV at light loads and less
than 500mV at full load, with better than 1% output voltage
accuracy.
Designed especially for hand-held, battery-powered devices,
the MIC5209 features low ground current to help prolong
battery life. An enable/shutdown pin on SO-8 and TO-263-5
versions can further improve battery life with near-zero shut-
down current.
Key features include reversed-battery protection, current
limiting, overtemperature shutdown, ultra-low-noise capabil-
ity (SO-8 and TO-263-5 versions), and availability in ther-
mally efficient packaging. The MIC5209 is available in adjust-
able or fixed output voltages.
For space-critical applications where peak currents do not
exceed 500mA, see the MIC5219.
Features
• Meets Intel® Slot 1 and Slot 2 requirements
• Guaranteed 500mA output over the full operating
temperature range
• Low 500mV maximum dropout voltage at full load
• Extremely tight load and line regulation
• Thermally-efficient surface-mount package
• Low temperature coefficient
• Current and thermal limiting
• Reversed-battery protection
• No-load stability
• 1% output accuracy
• Ultra-low-noise capability in SO-8 and TO-263-5
Applications
• Pentium II Slot 1 and Slot 2 support circuits
• Laptop, notebook, and palmtop computers
• Cellular telephones
• Consumer and personal electronics
• SMPS post-regulator/dc-to-dc modules
• High-efficiency linear power supplies
Typical Applications
MIC5209-2.5BS
123
VIN
≥ 3.0V
VOUT
2.5V ±1%
0.1µF
22µF
tantalum
3.3V Nominal-Input Slot-1
Power Supply
ENABLE
SHUTDOWN
VIN
6V
VOUT
5V
2.2µF
tantalum
MIC5209-5.0BM
18
27
36
45
470pF
(OPTIONAL)
Ultra-Low-Noise 5V Regulator
Ordering Information
Part Number
MIC5209-2.5BS
MIC5209-3.0BS
MIC5209-3.3BS
MIC5209-3.6BS
MIC5209-4.2BS
MIC5209-5.0BS
MIC5209-1.8BM
MIC5209-2.5BM
MIC5209-3.0BM
MIC5209-3.3BM
MIC5209-3.6BM
MIC5209-5.0BM
MIC5209BM
MIC5209-2.5BU
MIC5209-3.0BU
MIC5209-3.3BU
MIC5209-3.6BU
MIC5209-5.0BU
MIC5209BU
Voltage
2.5V
3.0V
3.3V
3.6V
4.2V
5.0V
1.8V
2.5V
3.0V
3.3V
3.6V
5.0V
Adj.
2.5V
3.0V
3.3V
3.6V
5.0V
Adj.
Junct. Temp. 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
0°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
Package
SOT-223
SOT-223
SOT-223
SOT-223
SOT-223
SOT-223
SO-8
SO-8
SO-8
SO-8
SO-8
SO-8
SO-8
TO-263-5
TO-263-5
TO-263-5
TO-263-5
TO-263-5
TO-263-5
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com
August 2, 2000
1
MIC5209

1 page




MIC5209-2.5BM pdf
MIC5209
Block Diagrams
VIN IN
OUT
VOUT
COUT
Bandgap
Ref.
Current Limit
Thermal Shutdown
MIC5209-x.xBS
GND
Low-Noise Fixed Regulator (SOT-223 version only)
VIN IN
BYP
CBYP
(optional)
EN
Bandgap
VRReEfF.
Current Limit
Thermal Shutdown
MIC5209-x.xBM/U
GND
OUT
VOUT
COUT
Ultra-Low-Noise Fixed Regulator
IN
VIN
Bandgap
VRReEfF.
EN
Current Limit
Thermal Shutdown
MIC5209BM/U [adj.]
GND
OUT
R1
ADJ
R2
VOUT
COUT
CBYP
(optional)
Ultra-Low-Noise Adjustable Regulator
Micrel
August 2, 2000
5
MIC5209

5 Page





MIC5209-2.5BM arduino
MIC5209
Package Information
3.15 (0.124)
2.90 (0.114)
CL
CL
3.71 (0.146) 7.49 (0.295)
3.30 (0.130) 6.71 (0.264)
2.41 (0.095)
2.21 (0.087)
4.7 (0.185)
4.5 (0.177)
0.10 (0.004)
0.02 (0.0008)
6.70 (0.264)
6.30 (0.248)
1.04 (0.041)
0.85 (0.033)
1.70
1.52
(0.067)
(0.060)
16°
10°
10°
MAX
0.84 (0.033)
0.64 (0.025)
SOT-223 (S)
DIMENSIONS:
MM (INCH)
0.038 (0.015)
0.25 (0.010)
0.91 (0.036) MIN
0.026 (0.65)
MAX)
0.157 (3.99)
0.150 (3.81)
PIN 1
DIMENSIONS:
INCHES (MM)
0.050 (1.27)
TYP
0.020 (0.51)
0.013 (0.33)
0.0098 (0.249)
0.0040 (0.102)
45° 0.010 (0.25)
0.007 (0.18)
0.064 (1.63)
0.045 (1.14)
0.197 (5.0)
0.189 (4.8)
0°–8°
SEATING
PLANE
0.050 (1.27)
0.016 (0.40)
0.244 (6.20)
0.228 (5.79)
8-Pin SOP (M)
Micrel
August 2, 2000
11
MIC5209

11 Page







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