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PDF LMZ22005 Data sheet ( Hoja de datos )
| Número de pieza | LMZ22005 | |
| Descripción | 5A SIMPLE SWITCHER Power Module | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LMZ22005 (archivo pdf) en la parte inferior de esta página. Total 22 Páginas | ||
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LMZ22005
April 5, 2011
5A SIMPLE SWITCHER® Power Module with 20V Maximum
Input Voltage
Easy to use 7 pin package
Performance Benefits
■ High efficiency reduces system heat generation
■ Complies with EN55022 Class B(Note 5)
■ Low component count, only 5 external components
■ Low output voltage ripple
■ Uses PCB as heat sink, no airflow required
TO-PMOD 7 Pin Package
30132986
10.16 x 13.77 x 4.57 mm (0.4 x 0.542 x 0.18 in)
θJA = 12°C/W, θJC = 1.9°C/W
RoHS Compliant
Electrical Specifications
■ 30W maximum total output power
■ Up to 5A output current
■ Input voltage range 6V to 20V
■ Output voltage range 0.8V to 6V
■ Efficiency up to 92%
Key Features
■ Integrated shielded inductor
■ Simple PCB layout
■ Frequency synchronization input (650 kHz to 950 kHz)
■ Flexible startup sequencing using external soft-start,
tracking and precision enable
■ Protection against inrush currents and faults such as input
UVLO and output short circuit
■ – 40°C to 125°C junction temperature range
■ Single exposed pad for easy mounting and manufacturing
■ Fast transient response for powering FPGAs and ASICs
■ Fully enabled for Webench® Power Designer
■ Pin compatible with LMZ23605/LMZ23603/LMZ22003
Applications
■ Point of load conversions from 12V input rail
■ Time critical projects
■ Space constrained / high thermal requirement applications
■ Negative output voltage applications (see AN-2027)
System Performance
Efficiency VIN = 12V VOUT = 5.0V
100
90
80
70
60
50
40
30
20
10
0
0
1234
OUTPUT CURRENT (A)
5
4
3
2
1
0
5
Thermal derating curve
VIN = 12V VOUT = 5.0V
6
30132903
5
4
3
2
1
θJA=12°C/W
0
30 40 50 60 70 80 90 100 110 120 130
AMBIENT TEMPERATURE (°C)
30132989
Radiated EMI (EN 55022)
of Demo Board (See AN-2125)
50
40
30
20
10
0
0
Class A Limit
Class B Limit
Horiz Peak
Horiz Quasi-Peak
200 400 600 800 1000
FREQUENCY (MHz)
30132950
© 2011 National Semiconductor Corporation 301329
www.national.com
Free Datasheet http://www.datasheet4u.com/
1 page  
Symbol Parameter
PERFORMANCE PARAMETERS(Note 7)
ΔVO Output voltage ripple
ΔVO/ΔVIN
ΔVO/ΔIOUT
η
η
Line regulation
Load regulation
Peak efficiency
Full load efficiency
Conditions
Min
(Note 3)
Typ
(Note 4)
Max
(Note 3)
Units
Cout = 220uF w/ 7 milliohm ESR +
100uF X5R + 2 x 0.047uF BW@ 20 MHz
VIN = 12V to 20V, IO= 0.001A
VIN = 12V, Io=0.001A to 5A
VIN = 12V VO = 3.3V IO = 1A
VIN = 12V VO = 3.3V IO = 5A
9
±0.02
1
86
81.5
mV PP
%
mV/A
%
%
Note 1: Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions under which operation of the
device is intended to be functional. For guaranteed specifications and test conditions, see the Electrical Characteristics.
Note 2: The human body model is a 100pF capacitor discharged through a 1.5 kΩ resistor into each pin. Test method is per JESD-22-114.
Note 3: Min and Max limits are 100% production tested at 25°C. Limits over the operating temperature range are guaranteed through correlation using Statistical
Quality Control (SQC) methods. Limits are used to calculate National’s Average Outgoing Quality Level (AOQL).
Note 4: Typical numbers are at 25°C and represent the most likely parametric norm.
Note 5: EN 55022:2006, +A1:2007, FCC Part 15 Subpart B: 2007. See AN-2125 and layout for information on device under test. Vin = 12V, Vo = 3.3V, Io = 5A
Note 6: Theta JA measured on a 3.5” x 3.5” four layer board, with three ounce copper on outer layers and two ounce copper on inner layers, sixty 10 mil thermal
vias, no air flow, and 1W power dissipation. Refer to application note layout diagrams.
Note 7: Refer to BOM in Table 1.
5 www.national.com
Free Datasheet http://www.datasheet4u.com/
5 Page 
Efficiency 1.5V output @ 85°C ambient
80
70
60
50
40
30
20
0
6 Vin
9 Vin
12 Vin
20 Vin
1234
OUTPUT CURRENT (A)
5
30132936
Efficiency 1.2V output @ 85°C ambient
80
70
60
50
40
30
20
0
6 Vin
9 Vin
12 Vin
20 Vin
1234
OUTPUT CURRENT (A)
5
30132938
Efficiency 1.0V output @ 85°C ambient
75
65
55
45
35
25
15
0
6 Vin
9 Vin
12 Vin
20 Vin
1234
OUTPUT CURRENT (A)
5
30132940
Dissipation 1.5V output @ 85°C ambient
6 20 Vin
12 Vin
5
9 Vin
6 Vin
4
3
2
1
0
012345
OUTPUT CURRENT (A)
30132937
Dissipation 1.2V output @ 85°C ambient
6 20 Vin
12 Vin
5
9 Vin
6 Vin
4
3
2
1
0
012345
OUTPUT CURRENT (A)
30132939
Dissipation 1.0V output @ 85°C ambient
6 20 Vin
12 Vin
5
9 Vin
6 Vin
4
3
2
1
0
012345
OUTPUT CURRENT (A)
30132941
11 www.national.com
Free Datasheet http://www.datasheet4u.com/
11 Page | ||
| Páginas | Total 22 Páginas | |
| PDF Descargar | [ Datasheet LMZ22005.PDF ] | |
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