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LMR14030SQDPRRQ1 Datasheet(PDF) 1 Page - Texas Instruments

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Part # LMR14030SQDPRRQ1
Description  LMR14030-Q1 SIMPLE SWITCHER짰 40 V, 3.5 A Step-Down Converter with 40 關A IQ
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

LMR14030SQDPRRQ1 Datasheet(HTML) 1 Page - Texas Instruments

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IOUT (A)
0.001
0.01
0.1
1
10
0
10
20
30
40
50
60
70
80
90
100
D001
VIN = 12 V, gSW = 500 kHz
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
Product
Folder
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Buy
Technical
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Community
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.
LMR14030-Q1
SNVSAG3A – NOVEMBER 2015 – REVISED JULY 2016
LMR14030-Q1 SIMPLE SWITCHER® 40 V, 3.5 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
3.5 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
8-Pin HSOIC with PowerPAD™ Package
2 Applications
Automotive Battery Regulation
Industrial Power Supplies
Telecom and Datacom Systems
General Purpose Wide Vin Regulation
space
3 Description
The LMR14030-Q1 is a 40 V, 3.5 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 2 A and 5 A options in
pin-to-pin compatible packages, including LMR14020-
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 LMR14030-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)
LMR14030SQDDARQ1
HSOIC (8)
4.89 mm x 3.90 mm
LMR14030SSQDDARQ1
(Spread Spectrum)
HSOIC (8)
4.89 mm x 3.90 mm
LMR14030QDPRRQ1
WSON (10)
4.10 mm x 4.10 mm
LMR14030SQDPRRQ1
(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 data sheet.
Simplified Schematic
Efficiency vs Output Current


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