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PDF MAQ5280 Data sheet ( Hoja de datos )
| Número de pieza | MAQ5280 | |
| Descripción | 25mA 120V - Low IQ High PSRR LDO | |
| Fabricantes | MICREL | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de MAQ5280 (archivo pdf) en la parte inferior de esta página. Total 14 Páginas | ||
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MAQ5280
25mA, 120V, Low IQ, High PSRR LDO
Automotive
General Description
The MAQ5280 is a high performance low dropout
regulator, offering a very low noise output with a very wide
input voltage operating range, up to 120V DC input
voltage.
Ideal for high input voltage applications such as
automotive and telecom, the MAQ5280 offers 2% initial
accuracy, extremely high power supply rejection ratio
(PSRR > 80dB) and low ground current (typically 31µA).
The MAQ5280 can also be put into a zero-off-mode
current state, drawing a minuscule amount of current when
disabled.
The MAQ5280 has a very wide input voltage range, with a
DC rating from –24V to 120V. This wide input range
covers the automotive load dump range and the MAQ5280
is optimized for line transient response, making it ideal for
harsh environment applications.
The MAQ5280 has an operating junction temperature
range of –40°C to +125°C and is available in an adjustable
output voltage version in a lead-free (RoHS compliant) 8-
pin EPAD SOIC packaging. This part is also AEC-Q100
Qualified for automotive applications.
Data sheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
Features
• Wide Input Voltage Range: 4.5V to 120V DC
• Very Low Quiescent Current: 31µA typical
• 25mA guaranteed output current
• Adjustable Output from 1.215V to 5V
• DC voltage protection down to -24V
• Ability to withstand up to +120V DC at the input
• Stable with ceramic output capacitors
• Ultra High PSRR > 80dB for RF Applications
• High output accuracy
– ± 2% initial accuracy
– ± 3% over temperature (–40°C to +125°C)
• Thermal shutdown and current limit protection
• Thermally efficient 8-pin EPAD SOIC package
• AEC-Q100 qualified
Applications
• Automotive Systems
• Industrial Applications
• Remote Keyless Entry Power Supply
• Telecom Applications
• Off-line Power Supplies
___________________________________________________________________________________________________________
Typical Application
www.DataSheet4U.com
Automotive Application
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 2008
M9999-102708-B
1 page  
Micrel, Inc.
Typical Characteristics
Power Supply
Rejection Ratio
120
100µA
100
80
60 10mA 25mA
1mA
40
20
010 100 1000 10000 100000
FREQUENCY (Hz)
Feedback Voltage
1.225
vs. Temperature
1.224
1.223
1.222
1.221
Load=100µA
1.220
1.219
Load=25mA
1.218
1.217
1.216
1.21-540 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
Dropout Voltage
vs. Output Current
1.4
1.2
1.0
0.8
0.6
0.4
0.2
00
VIN = 4.5V
CIN = 0.18µF
COUT = 2.2µF
5 10 15 20 25
OUTPUT CURRENT (mA)
Current Limit
vs. Temperature
80
77
74
71 VIN=12V
68
65
www.Dat6a2Sheet4U.com
59 VIN=4.5V
56
53
5-040 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
October 2008
3.155
3.154
3.153
3.152
3.151
3.150
3.149
3.148
3.147
3.146
3.1450
Output Voltage
vs. Input Voltage
VOUT = 3.15V
CIN = 0.18µF
COUT = 2.2µF
Load = 100µA
20 40 60 80 100 120
INPUT VOLTAGE (V)
Ground Current
vs. Output Current
300
250
200
150
100
50
00
–40°C
120°C
25°C
VIN = 12V
VOUT = 5V
CIN = 0.18µF
COUT = 2.2µF
5 10 15 20 25
OUTPUT CURRENT (mA)
Dropout Voltage
vs. Temperature
1.2
1.1
1.0
Load=25mA
0.9
0.8
0.7 Load=10mA
0.6
0.5
0.4
0.3 Load=100µA
0.2
0.1
-040 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
Adjust Pin Current
vs. Temperature
3.40
3.37
3.34
3.31
3.28
3.25
3.22
3.19
3.16
3.13
3.1-040 -20
0
20 40
VEN = 12V
60 80 100 120
TEMPERATURE (°C)
5
MAQ5280
5.010
5.008
5.006
5.004
5.002
5.000
4.998
4.996
4.994
4.992
4.9900
Output Voltage
vs. Load Current
EN = VBYP
VIN = 12V
VOUT = 5V
CIN = 0.18µF
COUT = 2.2µF
5 10 15 20 25
LOAD CURRENT (mA)
Ground Current
vs. Temperature
35
VIN=120V
32
VIN=12V
29
26 VIN=4.5V
23
EN = VIN
2-040 -20
0
20 40
Load = 100µA
60 80 100 120
TEMPERATURE (°C)
Current Limit
vs. Input Voltage
79
76
73
70
67
64
61
58 VOUT = 3.15V
COUT = 2.2µF
550 20 40 60 80 100 120
INPUT VOLTAGE (V)
Enable Threshold
vs. Temperature
1.1
Load = 100µA
1.0
0.9
0.8
0.7
0.6
0.5
0.-440 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
M9999-102708-B
5 Page 
Micrel, Inc.
MAQ5280
Figure 1. MAQ5280 EN Always Enabled
Figure 2. Enable Connected to VIN Application
www.DataSheet4U.com
October 2008
11 M9999-102708-B
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet MAQ5280.PDF ] | |
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