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PDF MIC5350 Data sheet ( Hoja de datos )
| Número de pieza | MIC5350 | |
| Descripción | Dual 300mA/500mA LDO | |
| Fabricantes | Micrel Semiconductor | |
| Logotipo |  |
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MIC5350
Dual 300mA/500mA LDO
in 2mm x 2mm Thin MLF®
General Description
Features
The MIC5350 is a tiny Dual Ultra Low-Dropout (ULDO™)
linear regulator ideally suited for portable electronics due
to its low output noise. The MIC5350 integrates two high-
performance; 300mA (VOUT1) and 500mA
into a tiny 2mm x 2mm leadless Thin
(VMOLUFT2®)
ULDOs™
package,
which provides exceptional thermal characteristics.
The MIC5350 is designed to be stable with small ceramic
output capacitors thereby reducing required board space
and component cost. The combination of extremely low-
drop-out voltage, low output noise and exceptional thermal
package characteristics makes it ideal for powering RF
and noise-sensitive circuitry, cellular phone camera
modules, imaging sensors for digital still cameras, PDAs,
MP3 players and WebCam applications.
The MIC5350 ULDO™ is available in fixed-output voltages
in the tiny 8-pin 2mm x 2mm leadless Thin MLF® package
which occupies less than half the board area of a single
SOT23-6 package. Additional voltage options are
available. For more information, contact Micrel marketing.
Data sheets and support documentation can be found on
Micrel’s web site at www.micrel.com.
• 2.6V to 5.5V input voltage range
• Ultra-low dropout voltage: 75mV @ 300mA and 125mV
@ 500mA
• Ultra-low output noise: 30µVRMS
• ±2% initial output accuracy
• Tiny 8-pin 2mm x 2mm Thin MLF® leadless package
• Excellent Load/Line transient response
• Fast start-up time: 30µs
• µCap stable with 2.2µF ceramic capacitors
• Thermal shutdown protection
• Low quiescent current: 130µA with both outputs at
maximum load
• Current-limit protection
Applications
• Mobile phones
• PDAs
• GPS receivers
• Portable electronics
• Portable media players
• Digital still and video cameras
_________________________________________________________________________________________________________________________
Typical Application
RF Power Supply Circuit
ULDO is a trademark of Micrel, Inc
MLF and MicroLeadFrame are registered trademarks of Amkor Technology, Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
June 2010
M9999-060410
1 page  
Micrel, Inc.
Typical Characteristics
Ground Current
vs. Output Current
100
95
90
85
80
0
VOUT2 = 2.8V
VIN = 4.3V
100 200 300 400
OUTPUT CURRENT (mA)
500
Output Voltage
vs. Input Voltage
3
100μA
2.8
2.6
500mA
2.4
2.2
2
1.8
1.6
1.4
2.5
VOUT2 = 2.8V
CIN = COUT = 2.2µF
3 3.5 4 4.5 5
INPUT VOLTAGE (V)
5.5
Dropout Voltage vs.
Output Current
140
120
100
80
60
40
20
0
0
VOUT2 = 2.8V
VEN1 = 0.0V
50 100 150 200 250 300 350 400 450 500
OUTPUT CURRENT (mA)
MIC5350
Ground Current
vs. Temperature
140
135 IOUT1 = 300mA and IOUT2 = 500mA
130
125
120
115
110
105 IOUT1 = 300mA
100
95
IOUT2 = 500mA
90
-40 -20 0 20 40 60 80 100 120 140
TEMPERATURE (°C)
Current Limit
vs. Input Voltage
1000
900
VOUT2
800
700
600
VOUT1
500
400
2.5 3 3.5 4 4.5 5 5.5
Input Voltage(V)
Output Voltage vs.
Output Current
3.6
3.4
VOUT1
3.2
3
2.8
2.6
2.4
0
VOUT2
VIN = 4.3V
CIN = COUT = 2.2μF
50 100 150 200 250 300 350 400 450 500
OUTPUT CURRENT (mA)
Output Voltage
vs. Input Voltage
3.6
3.4
3.2 100μA
3
2.8 300mA
2.6
2.4
2.2
2
1.8 VOUT1 = 3.3V
1.6 CIN = COUT = 2.2µF
1.4
2.5 3 3.5 4 4.5 5 5.5
INPUT VOLTAGE (V)
Dropout Voltage vs.
T emperature
180
160
140 VOUT2 = 500mA
120
100 VOUT1, 2 = 300mA
80
60
40
VOUT1, 2 = 150mA
20
0
-40 -20
0 20 40 60 80
TEMPERATURE (°C)
100 120
Output Noise Spectral Density
10
1
0.1
0.01 VIN = 4.5V
COUT = 2.2μF
VOUT1 = 2.8V
ILOAD = 75mA
0.001
10 100 1,000
10,000 100,000 1,000,000 10,000,000
FREQUENCY (Hz)
June 2010
5 M9999-060410
5 Page 
Micrel, Inc.
PCB Layout Recommendations
MIC5350
TOP LAYER
June 2010
BOTTOM LAYER
11
M9999-060410
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet MIC5350.PDF ] | |
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