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PDF MIC5208-3.6BMM Data sheet ( Hoja de datos )
| Número de pieza | MIC5208-3.6BMM | |
| Descripción | Dual 50mA LDO Voltage Regulator Preliminary Information | |
| Fabricantes | Micrel Semiconductor | |
| Logotipo |  |
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MIC5208
Micrel
MIC5208
Dual 50mA LDO Voltage Regulator
Preliminary Information
General Description
The MIC5208 is a dual linear voltage regulator with very low
dropout voltage (typically 20mV at light loads and 250mV at
50mA), very low ground current (225µA at 10mA output), and
better than 3% initial accuracy. It also features individual
logic-compatible enable/shutdown control inputs.
Designed especially for hand-held battery powered devices,
the MIC5208 can be switched by a CMOS or TTL compatible
logic signal, or the enable pin can be connected to the supply
input for 3-terminal operation. When disabled, power con-
sumption drops nearly to zero. Dropout ground current is
minimized to prolong battery life.
Key features include current limiting, overtemperature shut-
down, and protection against reversed battery.
The MIC5208 is available in 3.0V, 3.3V, 3.6V, 4.0V and 5.0V
fixed voltage configurations. Other voltages are available;
contact Micrel for details.
Features
• Micrel Mini 8™ MSOP package
• Guaranteed 50mA output
• Low quiescent current
• Low dropout voltage
• Wide selection of output voltages
• Tight load and line regulation
• Low temperature coefficient
• Current and thermal limiting
• Reversed input polarity protection
• Zero off-mode current
• Logic-controlled electronic enable
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 Application
Ordering Information
Part Number
Voltage Accuracy Junction Temp. Range*
MIC5208-3.0BMM 3.0
3%
–40°C to +125°C
MIC5208-3.3BMM 3.3
3%
–40°C to +125°C
MIC5208-3.6BMM 3.6
3%
–40°C to +125°C
MIC5208-4.0BMM 4.0
3%
–40°C to +125°C
MIC5208-5.0BMM 5.0
3%
–40°C to +125°C
Other voltages available. Contact Micrel for details.
Package
8-lead MSOP
8-lead MSOP
8-lead MSOP
8-lead MSOP
8-lead MSOP
Output A
Output B
1µF 1µF
MIC5208
18
27
3 6 Enable A
45
Enable B
Enable may be connected to VIN
3-168
1997
1 page  
MIC5208
Typical Characteristics
1000
Output Impedance
100
IL = 100µA
10 IL = 1mA
1
0.1
IL = 50mA
0.01
FREQUENCY (Hz)
Ripple Voltage
vs. Frequency
100
80
60
40
IL = 100µA
20 CL = 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)
Ripple Voltage
vs. Frequency
100
80
60
40
IL = 50mA
20 CL = 1µF
VIN = VOUT + 1
0
FREQUENCY (Hz)
Micrel
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
(MIC5208-3.3)
3
2 CL = 1µF
1 IL = 1mA
0
-1
-28
6
4
2
-0.2 0.0 0.2 0.4 0.6 0.8 1.0
TIME (ms)
Enable Characteristics
(MIC5208-3.3)
4.0
3.0
2.0
1.0 CL = 1µF
0.0 IL = 100µA
-1.40
2
0
-2
-2 0 2 4 6 8 10
TIME (µs)
Enable Voltage
vs. Temperature
1.50
CIN = 10µF
1.25
COUT = 1µF
IL = 1mA
1.00
0.75
VOFF
VON
0.50
-60 -30 0 30 60 90 120 150
TEMPERATURE (°C)
3-172
100
0
-100
-1200
50
0
-50
-5
Load Transient
COUT = 10µF
VIN = VOUT + 1
0 5 10 15 20
TIME (ms)
Line Transient
(MIC5208-3.3)
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)
Enable Characteristics
(MIC5208-3.3)
5
4
3
2
1 CL = 1µF
0 IL = 100µA
-41
2
0
-2
-0.2 0.0 0.2 0.4 0.6 0.8 1.0
TIME (ms)
Enable Current
vs. Temperature
40
CIN = 10µF
COUT = 1µF
30 IL = 1mA
20 VEN = 5V
10 VEN = 2V
0
-60 -30 0 30 60 90 120 150
TEMPERATURE (°C)
1997
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet MIC5208-3.6BMM.PDF ] | |
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