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PDF IC5205BM5 Data sheet ( Hoja de datos )
| Número de pieza | IC5205BM5 | |
| Descripción | MIC5205BM5 | |
| Fabricantes | Micrel Semiconductor | |
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MIC5205
www.DataSheet4U.com
Micrel
MIC5205
150mA Low-Noise LDO Regulator
General Description
The MIC5205 is an efficient linear voltage regulator with ultra-
low-noise output, very low dropout voltage (typically 17mV at
light loads and 165mV at 150mA), and very low ground
current (600µA at 100mA output). The MIC5205 offers better
than 1% initial accuracy.
Designed especially for hand-held, battery-powered devices,
the MIC5205 includes a CMOS or TTL compatible enable/
shutdown control input. When shutdown, power consump-
tion drops nearly to zero. Regulator ground current increases
only slightly in dropout, further prolonging battery life.
Key MIC5205 features include a reference bypass pin to
improve its already excellent low-noise performance, re-
versed-battery protection, current limiting, and
overtemperature shutdown.
The MIC5205 is available in fixed and adjustable output
voltage versions in a small SOT-23-5 package.
For low-dropout regulators that are stable with ceramic
output capacitors, see the µCap MIC5245/6/7 family.
Features
• Ultra-low-noise output
• High output voltage accuracy
• Guaranteed 150mA output
• Low quiescent current
• Low dropout voltage
• Extremely tight load and line regulation
• Very low temperature coefficient
• Current and thermal limiting
• Reverse-battery protection
• “Zero” off-mode current
• Logic-controlled electronic enable
Applications
• Cellular telephones
• Laptop, notebook, and palmtop computers
• Battery-powered equipment
• PCMCIA VCC and VPP regulation/switching
• Consumer/personal electronics
• SMPS post-regulator/dc-to-dc modules
• High-efficiency linear power supplies
Ordering Information
Part Number
Marking Voltage Accuracy Junction Temp. Range*
MIC5205BM5
LBAA
Adj
1%
–40°C to +125°C
MIC5205-2.5BM5
MIC5205-2.7BM5
MIC5205-2.8BM5
MIC5205-2.85BM5
LB25
LB27
LB28
LB2J
2.5V
2.7V
2.8V
2.85V
1%
1%
1%
1%
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
MIC5205-2.9BM5
MIC5205-3.0BM5
MIC5205-3.3BM5
LB29
LB30
LB33
2.9V
3.0V
3.3V
1%
1%
1%
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
MIC5205-3.6BM5
MIC5205-3.8BM5
MIC5205-4.0BM5
MIC5205-5.0BM5
LB36
LB38
LB40
LB50
3.6V
3.8V
4.0V
5.0V
1%
1%
1%
1%
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
Other voltages available. Contact Micrel for details.
Typical Application
VIN
MIC5205-x.xBM5
15
VOUT
Enable
Shutdown
EN
EN (pin 3) may be
connected directly
to IN (pin 1).
2
3
COUT = 2.2µF
4 tantalum
CBYP
Low-Noise Operation:
CBYP = 470pF, COUT ≥ 2.2µF
Basic Operation:
CBYP = not used, COUT ≥ 1µF
Package
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
Ultra-Low-Noise Regulator Application
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com
June 2000
1
MIC5205
1 page  
MIC5205
www.DataSheet4U.com
Typical Characteristics
Noise Performance
10
10mA, COUT = 1µF
1
0.1
0.01
1mA
COUT = 1µF
CBYP = 10nF
0.001
VOUT = 5V
0.0001
1E1+01 11E0+02 1E1+k3 11E0+k4 11E0+05k 11EM+6 11E0+M7
FREQUENCY (Hz)
Noise Performance
10
1 100mA
0.1 10mA
0.01
0.001
VOUT = 5V
COUT = 10µF
1mA
electrolytic
0.0001
1E10+1 11E0+02 1E1k+3 11E0+k4 11E0+0k5 1E1M+6 11E0+M7
FREQUENCY (Hz)
Noise Performance
10
1
100mA
0.1
0.01 VOUT = 5V
1mA
0.001
COUT = 10µF
electrolytic
10mA
CBYP = 100pF
0.0001
1E10+1 11E0+02 1E1k+3 11E0+k4 11E0+0k5 1E1M+6 11E0+M7
FREQUENCY (Hz)
Noise Performance
10
1 10mA
100mA
0.1
0.01 VOUT = 5V
1mA
COUT = 10µF
0.001 electrolytic
CBYP = 1nF
0.0001
1E10+1 11E0+02 1E1k+3 11E0+k4 11E0+0k5 1E1M+6 11E0+M7
FREQUENCY (Hz)
Micrel
Noise Performance
10
1
10mA
0.1 100mA
0.01 VOUT = 5V
0.001
COUT = 22µF
tantalum
1mA
CBYP = 10nF
0.0001
1E10+1 11E0+02 1E1k+3 11E0+k4 11E0+0k5 1E1M+6 11E0+M7
FREQUENCY (Hz)
Noise Performance
10
1
100mA
0.1
0.01 VOUT = 5V
1mA
0.001
COUT = 10µF
electrolytic
10mA
CBYP = 10nF
0.0001
1E1+01 11E0+02 1E1k+3 11E0+k4 11E0+05k 1E1M+6 11E0+M7
FREQUENCY (Hz)
June 2000
5
MIC5205
5 Page 
MIC5205
www.DataSheet4U.com
Micrel
June 2000
11
MIC5205
11 Page | ||
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| PDF Descargar | [ Datasheet IC5205BM5.PDF ] | |
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