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PDF MIC5303 Data sheet ( Hoja de datos )
| Número de pieza | MIC5303 | |
| Descripción | Single 300mA CMOS Ultra Small ULDO | |
| Fabricantes | Micrel Semiconductor | |
| Logotipo |  |
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MIC5303
Single 300mA CMOS
Ultra Small ULDO™
General Description
The MIC5303 is an ultra small, Ultra Low Dropout CMOS
regulator, ULDO™ that is ideal for today’s most demand-
ing portable applications including cellular phone RF
power, camera modules, imaging sensors for digital still
and video cameras, PDAs, portable media players (PMP)
and PC cameras where board space is limited. It offers
extremely low dropout voltage, very low output noise and
can operate from a 2.3V to 5.5V input while delivering up
to 300mA.
It offers 2% initial accuracy, low ground current (typically
85µA total), thermal and current limit protection. The
MIC5303 can also be put into a zero-off-mode current
state, drawing no current when disabled.
The MIC5303 is available in the ultra small 4-pin 1.2mm x
1.6mm Thin MLF® package, occupying only 1.92mm2 of
PCB area, a 50% reduction in board area compared to
SC-70 and 2mm x 2mm MLF® packages. It’s operating
junction temperature range is –40°C to +125°C and is
available in fixed output voltages in lead-free (RoHS
compliant) Thin MLF® package.
Data sheets and support documentation can be found on
Micrel’s web site at www.micrel.com.
Features
• Ultra Small 1.2mm x 1.6mm Thin MLF® package
• Low Dropout Voltage: 100mV at 300mA
• Output noise 120µVrms
• Input voltage range: 2.3V to 5.5V
• 300mA guaranteed output current
• Stable with ceramic output capacitors
• Low quiescent current 85µA total
• 35µs turn-on time
• High output accuracy
– ±2% initial accuracy
– ±3% over temperature
• Thermal shutdown and current limit protection
Applications
• Mobile Phones
• PDAs
• GPS Receivers
• Portable Media Players
• Portable Electronics
• Digital Still & Video Cameras
Typical Application
1µF
MIC5303-x.xYMT
VIN VOUT
EN
GND
1µF
RF LDO Application
Dropout Voltage
vs. Output Current
150
125
100
75
50
25 VOUT = 2.8V
00
COUT = 1µF
50 100 150 200 250 300
OUTPUT CURRENT (mA)
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
October 2006
1 M9999-102506-B
1 page  
Micrel, Inc.
Typical Characteristics
100
90
80
70
60
50
40
30
20
10
00
Ground Pin Current
vs. Output Current
VIN = VOUT + 1V
VOUT = 2.8V
COUT = 1µF
50 100 150 200 250 300
OUTPUT CURRENT (mA)
Power Supply
Rejection Ratio
-80 50mA
-70
-60 150mA
-50 300mA
-40
-30
-20 VIN = VOUT + 1V
-10 VOUT = 2.8V
00.1COUT
= 1µF
1
10
100
FREQUENCY (kHz)
1,000
Output Voltage
vs. Output Current
2.83
2.82
2.81
2.80
2.79
2.78
2.770
VIN = VOUT + 1V
VOUT = 2.8V
COUT = 1µF
50 100 150 200 250 300
OUTPUT CURRENT (mA)
500
490
480
470
460
450
440
430
420
410
4030.0
Current Limit
vs. Input Voltage
VOUT = 2.8V
COUT = 1µF
3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
October 2006
Ground Pin Current
vs. Temperature
90
88
86 300mA
84
82 100µA
80
78
76
74 VIN = VOUT + 1V
72
VOUT = 2.8V
COUT = 1µF
70 20 40 60 80
TEMPERATURE (°C)
Dropout Voltage
vs. Temperature
160
VOUT = 2.8V
140 COUT = 1µF
300mA
120
100
80
150mA
60
40
20 50mA
100µA
0 20 40 60 80
TEMPERATURE (°C)
Output Voltage
vs. Supply Voltage
3.2
2.8
2.4
2.0 100µA
1.6
1.2 300mA
0.8
0.4 COUT = 1µF
00 1 2 3 4 5 6
SUPPLY VOLTAGE (V)
Output Noise
Spectral Density
10
1
0.1
0.01 VIN = VOUT + 1V
VOUT = 2.8V
COUT = 1µF
0.0001.01 0.1 1
10 100
FREQUENCY (kHz)
1,000
5
MIC5303
100
90
80
70
60
50
40
30
20
10
30.0
Ground Pin Current
vs. Supply Voltage
300mA
100µA
3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
Dropout Voltage
vs. Output Current
150
125
100
75
50
25 VOUT = 2.8V
00
COUT = 1µF
50 100 150 200 250 300
OUTPUT CURRENT (mA)
Output Voltage
vs. Temperature
3.00
2.95
2.90
2.85
2.80
2.75
2.70
2.65
2.60
2.55
2.50
VIN = VOUT + 1V
VOUT = 2.8V
COUT = 1µF
IOUT = 100µA
20 40 60 80
TEMPERATURE (°C)
M9999-102506-B
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet MIC5303.PDF ] | |
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