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LMZ14201H_1106 Datasheet, PDF (1/20 Pages) National Semiconductor (TI) – 1A SIMPLE SWITCHER® Power Module for High Output Voltage | |||
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LMZ14201H
June 13, 2011
1A SIMPLE SWITCHER® Power Module for High Output
Voltage
Easy to use 7 pin package
Performance Benefits
â High efficiency reduces system heat generation
â Low radiated EMI (EN 55022 Class B compliant) (Note 5)
â No compensation required
â Low package thermal resistance
System Performance
TO-PMOD 7 Pin Package
30135430
10.16 x 13.77 x 4.57 mm (0.4 x 0.542 x 0.18 in)
θJA = 16°C/W, θJC = 1.9°C/W
RoHS Compliant
Electrical Specifications
â Up to 1A output current
â Input voltage range 6V to 42V
â Output voltage as low as 5V
â Efficiency up to 97%
Key Features
â Integrated shielded inductor
â Simple PCB layout
â Flexible startup sequencing using external soft-start and
precision enable
â Protection against inrush currents
â Input UVLO and output short circuit protection
â â 40°C to 125°C junction temperature range
â Single exposed pad and standard pinout for easy
mounting and manufacturing
â Low output voltage ripple
â Pin-to-pin compatible family:
LMZ14203H/2H/1H (42V max 3A, 2A, 1A)
LMZ14203/2/1 (42V max 3A, 2A, 1A)
LMZ12003/2/1 (20V max 3A, 2A, 1A)
â Fully enabled for Webench® Power Designer
Applications
â Intermediate bus conversions to 12V and 24V rail
â Time critical projects
â Space constrained / high thermal requirement applications
â Negative output voltage applications
Efficiency VOUT = 12V
100
95
90
85
80
75
70
0.0
VIN = 15V
VIN = 24V
VIN = 30V
VIN = 36V
VIN = 42V
0.2 0.4 0.6 0.8 1.0
OUTPUT CURRENT (A)
30135407
Thermal Derating VOUT = 12V, θJA = 16°C/W
1.2
1.0
0.8
0.6
0.4
0.2
VIN = 15V
VIN = 24V
VIN = 42V
0.0
-20 0 20 40 60 80 100 120 140
AMBIENT TEMPERATURE (°C)
30135432
Radiated Emissions (EN 55022 Class B)
80
70
60
50
40
30
20
10
0
0
Emissions (Evaluation Board)
EN 55022 Limit (Class B)
200 400 600 800 1000
FREQUENCY (MHz)
30135425
SIMPLE SWITCHER® is a registered trademark of National Semiconductor Corporation
© 2011 National Semiconductor Corporation 301354
www.national.com
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