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PDF MIC5203-4.0BM4 Data sheet ( Hoja de datos )
| Número de pieza | MIC5203-4.0BM4 | |
| Descripción | Cap 80mA Low-Dropout Voltage Regulator | |
| Fabricantes | Micrel Semiconductor | |
| Logotipo |  |
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MIC5203
Micrel
MIC5203
µCap™ 80mA Low-Dropout Voltage Regulator
General Description
The MIC5203 is a µCap™ 80mA linear voltage regulator with
very low dropout voltage (typically 20mV at light loads and
300mV at 80mA) and very low ground current (225µA at
20mA output), offering better than 3% initial accuracy with a
logic-compatible enable input.
The µCap™ regulator design is optimized to work with low-
value, low-cost ceramic capacitors. The outputs typically
require only 0.47µF of output capacitance for stability.
Designed especially for hand-held, battery-powered devices,
the MIC5203 can be controlled by a CMOS or TTL compatible
logic signal. When disabled, power consumption drops nearly
to zero. If on-off control is not required, the enable pin may be
tied to the input for 3-terminal operation. The ground current
of the MIC5203 increases only slightly in dropout, further
prolonging battery life. Key MIC5203 features include current
limiting, overtemperature shutdown, and protection against
reversed battery.
The MIC5203 is available in 2.8V, 3.0V, 3.3V, 3.6V, 3.8V,
4.0V, 4.5V, 4.75V, and 5.0V fixed voltages. Other voltages
are available; contact Micrel for details.
Features
• Tiny 4-lead and 5-lead surface-mount packages
• Wide Selection of output voltages
• Guaranteed 80mA output
• Low quiescent current
• Low dropout voltage
• Tight load and line regulation
• Low temperature coefficient
• Current and thermal limiting
• Reversed input polarity protection
• Zero off-mode current
• Logic-controlled shutdown
• Stability with low-ESR ceramic capacitors
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
Typical Applications
Ordering Information
Enable
Shutdown
Enable
Shutdown
LAxx
VOUT
0.47µF
SOT-143 Version
1 5 VOUT
2 0.47µF
34
SOT-23-5 Version
Part Number
Marking Voltage
MIC5203-3.0BM4
LA30
3.0V
MIC5203-3.3BM4
LA33
3.3V
MIC5203-3.6BM4
LA36
3.6V
MIC5203-3.8BM4
LA38
3.8V
MIC5203-4.0BM4
LA40
4.0V
MIC5203-4.5BM4
LA45
4.5V
MIC5203-4.7BM4
LA47
4.75V
MIC5203-5.0BM4
LA50
5.0V
MIC5203-2.8BM5
LA28
2.8V
MIC5203-3.0BM5
LK30
3.0V
MIC5203-3.3BM5
LK33
3.3V
MIC5203-3.6BM5
LK36
3.6V
MIC5203-3.8BM5
LK38
3.8V
MIC5203-4.0BM5
LK40
4.0V
MIC5203-4.5BM5
LK45
4.5V
MIC5203-4.7BM5
LK47
4.75V
MIC5203-5.0BM5
LK50
5.0V
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
–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-143
SOT-143
SOT-143
SOT-143
SOT-143
SOT-143
SOT-143
SOT-143
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
3
December 1998
3-141
1 page  
MIC5203
Micrel
Load Transient
200
0
-200 Awaiting Further
-2400 Characterization
Data
COUT = 0.1µF
VIN = VOUT + 1
0-1 0 1 2 3 4 5 6 7 8
TIME (ms)
Line Transient
3
2
1
0
-1 Awaiting Further
-32 Characterization
2 Data
1
0 CL = 0.1µF
-1 IL = 1mA
-2
-0.2 0.0 0.2 0.4 0.6 0.8 1.0
TIME (ms)
Ripple Voltage
vs. Frequency
100
80
Awaiting Further
60 Characterization
Data
40
IL = 100µA
20 CL = 0.1µF
VIN = VOUT + 1
0
FREQUENCY (Hz)
Ripple Voltage
vs. Frequency
100
80
60
40
IL = 100µA
20 CL = 1µF
VIN = VOUT + 1
0
FREQUENCY (Hz)
December 1998
Load Transient
200
0
-200
-1400
COUT = 1µF
VIN = VOUT + 1
50
0
-50
-1 0 1 2 3 4 5 6 7 8
TIME (ms)
Line Transient
3
2 CL = 1µF
1 IL = 1mA
0
-1
-82
6
4
2
-0.2 0.0 0.2 0.4 0.6 0.8 1.0
TIME (ms)
Ripple Voltage
vs. Frequency
100
80
Awaiting Further
60 Characterization
Data
40
IL = 1mA
20 CL = 0.1µF
VIN = VOUT + 1
0
FREQUENCY (Hz)
Ripple Voltage
vs. Frequency
100
80
60
40
IL = 1mA
20 CL = 1µF
VIN = VOUT + 1
0
FREQUENCY (Hz)
3-145
100
0
-100
-1200
50
0
-50
-5
Load Transient
COUT = 10µF
VIN = VOUT + 1
0 5 10 15 20
TIME (ms)
Line Transient
2
1
CL = 11µF
IL = 1mA
0
-81
6
4
2
-0.2 0.0 0.2 0.4 0.6 0.8 1.0
TIME (ms)
Ripple Voltage
vs. Frequency
100
80
Awaiting Further
60
Characterization
Data
40
IL = 50mA
20 CL = 0.1µF
VIN = VOUT + 1
0
FREQUENCY (Hz)
Ripple Voltage
vs. Frequency
100
80
60
40
IL = 50mA
20 CL = 1µF
VIN = VOUT + 1
0
FREQUENCY (Hz)
3
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet MIC5203-4.0BM4.PDF ] | |
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