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LMR14020SSQDDAQ1 データシート(PDF) 1 Page - Texas Instruments

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部品番号 LMR14020SSQDDAQ1
部品情報  LMR14020-Q1 SIMPLE SWITCHER짰 40 V, 2 A Step-Down Converter with 40 關A IQ
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メーカー  TI1 [Texas Instruments]
ホームページ  http://www.ti.com
Logo TI1 - Texas Instruments

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IOUT (A)
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D001
VIN = 12 V, gSW = 1 MHz
VOUT = 5 V
VOUT = 3.3 V
BOOT
SW
L
CBOOT
FB
VIN
VIN up to 40 V
GND
COUT
EN
CIN
SS
RT/SYNC
VOUT
CSS
D
RFBT
RFBB
RT
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An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
LMR14020-Q1
SNVSAG4A – NOVEMBER 2015 – REVISED JULY 2016
LMR14020-Q1 SIMPLE SWITCHER® 40 V, 2 A Step-Down Converter with 40 µA IQ
1
1 Features
1
Qualified for Automotive Applications
AEC-Q100 Qualified With the Following Results:
- Device Temperature Grade 1: -40 °C to 125 °C
Ambient Operating Temperature Range
- Device HBM ESD Classification Level H1C
- Device CDM ESD Classification Level C4A
4 V to 40 V Input Range
2 A Continuous Output Current
Ultra-low 40 µA Operating Quiescent Current
90 m
Ω High-Side MOSFET
Minimum Switch-On Time: 75 ns
Current Mode Control
Adjustable Switching Frequency from 200 kHz to
2.5 MHz
Frequency Synchronization to External Clock
Spread Spectrum Option for Reduced EMI
Internal Compensation for Ease of Use
High Duty Cycle Operation Supported
Precision Enable Input
1 µA Shutdown Current
External Soft-start
Thermal, Overvoltage and Short Protection
2 Applications
Automotive Battery Regulation
Industrial Power Supplies
Telecom and Datacom Systems
General Purpose Wide Vin Regulation
space
3 Description
The LMR14020-Q1 is a 40 V, 2 A step down
regulator with an integrated high-side MOSFET. With
a wide input range from 4 V to 40 V, it’s suitable for
various applications from industrial to automotive for
power conditioning from unregulated sources. An
extended family is available in 3.5 A and 5 A options
in
pin-to-pin
compatible
packages,
including
LMR14030-Q1 and LMR14050-Q1. The regulator’s
quiescent current is 40 µA in Sleep-mode, which is
suitable for battery powered systems. An ultra-low 1
μA current in shutdown mode can further prolong
battery life. A wide adjustable switching frequency
range allows either efficiency or external component
size to be optimized. Internal loop compensation
means that the user is free from the tedious task of
loop compensation design. This also minimizes the
external components of the device. A precision
enable input allows simplification of regulator control
and system power sequencing. The device also has
built-in protection features such as cycle-by-cycle
current limit, thermal sensing and shutdown due to
excessive power dissipation, and output overvoltage
protection.
The LMR14020-Q1 is available in an 8-pin HSOIC or
10-pin WSON package with exposed pad for low
thermal resistance.
Device Information (1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
LMR14020SQDDARQ1
HSOIC (8)
4.89 mm x 3.90 mm
LMR14020SSQDDARQ1
(Spread Spectrum)
HSOIC (8)
4.89 mm x 3.90 mm
LMR14020QDPRRQ1
WSON (10)
4.10 mm x 4.10 mm
LMR14020SQDPRRQ1
(Spread Spectrum)
WSON (10)
4.10 mm x 4.10 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Simplified Schematic
Efficiency vs Output Current


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