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부품번호 | LMZ14203 기능 |
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기능 | Power Module | ||
제조업체 | National Semiconductor | ||
로고 | |||
전체 16 페이지수
LMZ14203
February 1, 2010
3A SIMPLE SWITCHER® Power Module with 42V Maximum
Input Voltage
Easy to use 7 pin package
Performance Benefits
■ Operates at high ambient temperature with no thermal
derating
■ High efficiency reduces system heat generation
■ Low radiated emissions (EMI) complies with EN55022
class B standard
■ Passes 10V/m radiated immunity EMI test standard
EN61000 4-3
TO-PMOD 7 Pin Package
30107086
10.16 x 13.77 x 4.57 mm (0.4 x 0.542 x 0.18 in)
θJA = 20°C/W, θJC = 1.9°C/W
RoHS Compliant
System Performance
Efficiency VIN = 24V VOUT = 5.0V
Electrical Specifications
■ 18W maximum total output power
■ Up to 3A output current
■ Input voltage range 6V to 42V
■ Output voltage range 0.8V to 6V
■ Efficiency up to 90%
Key Features
■ Integrated shielded inductor
■ Simple PCB layout
■ Flexible startup sequencing using external soft-start and
precision enable
■ Protection against inrush currents and faults such as input
UVLO and output short circuit
www.Da■taS–h4e0e°tC4Ut.oco1m25°C junction temperature range
■ Single exposed pad and standard pinout for easy
mounting and manufacturing
■ Fast transient response for powering FPGAs and ASICs
■ Low output voltage ripple
■ Pin-to-pin compatible family:
LMZ14203/2/1 (42V max 3A, 2A, 1A)
LMZ12003/2/1 (20V max 3A, 2A, 1A)
■ Fully enabled for Webench® Power Designer
Applications
■ Point of load conversions from 12V and 24V input rail
■ Time critical projects
■ Space constrained / high thermal requirement applications
■ Negative output voltage applications
30107036
Thermal derating curve
VIN = 24V, VOUT = 5.0V,
30107037
Radiated Emissions (EN 55022 Class B)
from Evaluation Board
© 2010 National Semiconductor Corporation 301070
30107038
www.national.com
Symbol
η
η
Parameter
Efficiency
Efficiency
Conditions
VIN = 24V VO = 3.3V IO = 1A
VIN = 24V VO = 3.3V IO = 3A
Min
(Note 3)
Typ
(Note 4)
92
85
Max
(Note 3)
Units
%
%
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-2024 and layout for information on device under test.
Note 6: Theta JA measured on a 1.705” x 3.0” four layer board, with one ounce copper, thirty five 12 mil thermal vias, no air flow, and 1W power dissipation.
Refer to PCB layout diagrams
Typical Performance Characteristics
Unless otherwise specified, the following conditions apply: VIN = 24V; Cin = 10uF X7R Ceramic; CO = 100uF X7R Ceramic; Tam-
bient = 25 C for efficiency curves and waveforms.
Efficiency 6V Input @ 25°C
Dissipation 6V Input @ 25°C
www.DataSheet4U.com
30107031
Efficiency 12V Input @ 25°C
30107032
Dissipation 12V Input @ 25°C
www.national.com
30107003
4
30107004
4페이지 Efficiency 36V input @ 85°C
Dissipation 36V input @ 85°C
30107046
Line and Load Regulation @ 25°C
30107047
Output Ripple
24VIN 3.3VO 3A, BW = 200 MHz
30107048
Transient Response
www.DataSheet4U.c2o4mVIN 3.3VO 0.6A to 3A Step
30107005
Thermal Derating VOUT = 3.3V
30107006
7
30107051
www.national.com
7페이지 | |||
구 성 | 총 16 페이지수 | ||
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DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |