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PDF MIC5256-3.3BM5 Data sheet ( Hoja de datos )
| Número de pieza | MIC5256-3.3BM5 | |
| Descripción | 150mA UCap LDO with Error Flag | |
| Fabricantes | Micrel Semiconductor | |
| Logotipo |  |
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MIC5256
Micrel
MIC5256
150mA µCap LDO with Error Flag
Final Information
General Description
The MIC5256 is an efficient, precise CMOS voltage regula-
tor. It offers better than 1% initial accuracy, extremely low-
dropout voltage (typically 135mV at 150mA) and low ground
current (typically 90µA) over load. The MIC5256 features an
error flag that indicates an output fault condition such as
overcurrent, thermal shutdown and dropout.
Designed specifically for handheld and battery-powered de-
vices, the MIC5256 provides a TTL-logic-compatible enable
pin. When disabled, power consumption drops nearly to zero.
The MIC5256 also works with low-ESR ceramic capacitors,
reducing the amount of board space necessary for power
applications, critical in hand-held wireless devices.
Key features include current limit, thermal shutdown, faster
transient response, and an active clamp to speed up device
turnoff. Available in 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 MIC5256
offers a range of output voltages.
Features
• Input voltage range: 2.7V to 6.0V
• Thin SOT package: 1mm height
• Error flag indicates fault condition
• Stable with ceramic output capacitor
• Ultralow dropout: 135mV @ 150mA
• High output accuracy:
1.0% initial accuracy
2.0% over temperature
• Low quiescent current: 90µA
• Tight load and line regulation
• Thermal shutdown and current limit protection
• “Zero” off-mode current
• TTL logic-controlled enable input
Applications
• Cellular phones and pagers
• Cellular accesories
• Battery-powered equipment
• Laptop, notebook, and palmtop computers
• Consumer/personal electronics
Typical Application
Ordering Information
Part Number
Marking Voltage
MIC5256-2.6BM5
LX26
2.6V
MIC5256-2.7BM5
LX27
2.7V
MIC5256-2.8BM5
LX28
2.8V
MIC5256-2.85BM5
LX2J
2.85V
MIC5256-3.0BM5
LX30
3.0V
MIC5256-3.3BM5
LX33
3.3V
MIC5256-2.85BD5
NX2J
2.85V
Other voltages available. Contact Micrel for details.
Junction 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
–40°C to +125°C
Package
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
TSOT-23-5
CIN = 1.0µF VIN
Ceramic
Enable
Shutdown
EN (pin 3) may be
connected directly
to IN (pin 1).
EN
MIC5256-x.xBM5
15
2
34
VOUT
COUT = 1.0µF
Ceramic
FLG
Low-Noise Regulator Application
IttyBitty is a trademark of Micrel, Inc.
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 2003
1
MIC5256
1 page  
MIC5256
Typical Characteristics
Power Supply Rejection Ratio
70
60
50
40 100µA*
50mA*
30 100mA*
20 150mA*
*ILOAD
10 COUT = 1.0µF Ceramic
0
FREQUENCY (Hz)
Ground Pin Current
130
125
120
115
110
105
1000.1
V = V + 1V
IN OUT
1 10 100 1000
OUTPUT CURRENT (mA)
Ground Pin Current
140
120
100
80
60
40
20
I
LOAD
=
100µA
00 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
INPUT VOLTAGE (V)
Dropout Voltage
0.14
0.12
0.1
0.08
0.06
0.04
0.02
I
LOAD
=
100µA
-040 -20 0 20 40 60 80 100120140
TEMPERATURE (°C)
June 2003
Power Supply Rejection Ratio
70
60
50
40 100µA*
50mA*
30 100mA*
20 150mA*
10 *ILOAD
COUT = 4.7µF Ceramic
0
FREQUENCY (Hz)
Ground Pin Current
115
113
111
109
107
105
103
101
99
97
I
LOAD
=
100µA
9-540 -20 0 20 40 60 80 100120140
TEMPERATURE (°C)
Ground Pin Current
140
120
100
80
60
40
20
I = 150mA
LOAD
00 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
INPUT VOLTAGE (V)
Dropout Voltage
180
160
140
120
100
80
60
40
20 I = 150mA
LOAD
-040 -20 0 20 40 60 80 100120140
TEMPERATURE (°C)
5
Micrel
PSRR vs. Voltage Drop
70
ILOAD = 100µA
60
50
40 ILOAD = 150mA
30
20
10
COUT = 1µF
00 200 400 600 800 1000
VOLTAGE DROP (mV)
Ground Pin Current
125
120
115
110
105
100
I = 150mA
LOAD
9-540 -20 0 20 40 60 80 100120140
TEMPERATURE (°C)
Dropout Characteristics
3.5
3
I
LOAD
=
100µA
2.5
2
I = 150mA
LOAD
1.5
1
0.5
00 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
INPUT VOLTAGE (V)
Dropout Voltage
180
T = –40C
160
140
120
100
80 T = 25C
60
T = 125C
40
20
00 20 40 60 80 100 120 140 160
OUTPUT CURRENT (mA)
MIC5256
5 Page 
MIC5256
Package Information
1.90 (0.075) REF
0.95 (0.037) REF
1.75 (0.069) 3.00 (0.118)
1.50 (0.059) 2.60 (0.102)
3.02 (0.119)
2.80 (0.110)
0.50 (0.020)
0.35 (0.014)
1.30 (0.051)
0.90 (0.035)
0.15 (0.006)
0.00 (0.000)
10°
0°
SOT-23-5 (M5)
DIMENSIONS:
MM (INCH)
0.20 (0.008)
0.09 (0.004)
0.60 (0.024)
0.10 (0.004)
2.90BSC
1.90BSC
1.90BSC
0.30
0.45
DIMENSIONS:
Millimeter
0.90
0.80
1.90BSC
1.00
0.90
1.60BSC
0.10
0.01
TSOT-23-5 (D5)
0.20
0.12
0.30
0.50
1.60BSC
Micrel
MICREL, INC. 1849 FORTUNE DRIVE SAN JOSE, CA 95131 USA
TEL + 1 (408) 944-0800 FAX + 1 (408) 944-0970 WEB http://www.micrel.com
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.
© 2003 Micrel, Incorporated
June 2003
11
MIC5256
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet MIC5256-3.3BM5.PDF ] | |
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