LMZ22005 Datasheet, PDF (1/22 Pages) National Semiconductor (TI) – 5A SIMPLE SWITCHER Power Module with 20V Maximum Input Voltage

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)
θ_JA = 12°C/W, θ_JC = 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 V_IN = 12V V_OUT = 5.0V
100
5
90
80
4
70
60
3
50
40
2
30
20
1
10
0
0
0
1
2
3
4
5
OUTPUT CURRENT (A)
Thermal derating curve
V_IN = 12V V_OUT = 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
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