LMR50410-Q1
SLUSDW4A – OCTOBER 2019 – REVISEDLNMOVRE5M0B4E1R02-Q0210
SLUSDW4A – OCTOBER 2019 – REVISED NOVEMBER 2020
www.ti.com
LMR50410-Q1 SIMPLE SWITCHER® 4-V to 36-V, 1-A Buck Converter in SOT-23-6
Package
1 Features
2 Applications
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•
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AEC-Q100 qualified
– Temperature grade 1: –40°C to 125°C ambient
operating temperature range
Functional Safety-Capable
– Documentation available to aid functional safety
system design
Configured for rugged automotive applications
– Input voltage range: 4 V to 36 V
– 1-A continuous output current
– Minimum switching-on time: 60 ns
– 2.1-MHz fixed switching frequency
– Junction temperature range: –40°C to 150°C
– 98% maximum duty cycle
– Monotonic start-up with pre-biased output
– Internal short circuit protection with hiccup
mode
– ±1% tolerance voltage reference
– Precision enable
Small solution size and ease of use
– Integrated synchronous rectification
– Internal compensation for ease of use
– SOT-23-6 package
Pin-to-pin compatible with TPS560430-Q1
Various options in pin-to-pin compatible package
– PFM and forced PWM (FPWM) options
– Fixed 3.3-V and 5.0-V output option
Create a custom design using the LMR50410-Q1
with the WEBENCH® Power Designer
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Body electronics and lighting
Infotainment and cluster
ADAS
General purpose wide VIN power supplies
3 Description
The LMR50410-Q1 is a wide-V IN, easy-to-use
synchronous buck converter capable of driving up to
1-A load current. With a wide input range of 4 V to 36
V, the device is suitable for a wide range of
automotive applications for power conditioning from
an unregulated source.
The LMR50410-Q1 operates at 2.1-MHz switching
frequency to support use of relatively small inductors
for an optimized solution size. It has an PFM version
to realize high efficiency at light load and FPWM
version to achieve constant frequency, and small
output voltage ripple over the full load range. Soft-
start and compensation circuits are implemented
internally which allows the device to be used with
minimum external components.
•
The device has built-in protection features, such as
cycle-by-cycle current limit, hiccup mode short-circuit
protection, and thermal shutdown in case of excessive
power dissipation. The LMR50410-Q1 is available in
SOT-23-6 package.
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Device Information
PART NUMBER
PACKAGE(1)
BODY SIZE (NOM)
•
LMR50410-Q1
SOT-23-6
2.90 mm × 1.60 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
100
90
80
70
60
VIN up to 36 V
CB
VIN
CIN
CBOOT
L
VOUT
50
40
30
20
10
0
SW
FB
EN
PFM, VIN=8V
PFM, VIN=12V
PFM, VIN=24V
PFM, VIN=36V
FPWM, VIN=8V
FPWM, VIN=12V
FPWM, VIN=24V
FPWM, VIN=36V
RFBT
GND
COUT
RFBB
0.001
0.01
0.1
1
2
IOUT(A)
Efficiency versus Output Current VOUT = 5 V,
2.1MHz
Simplified Schematic
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.
Product Folder Links: LMR50410-Q1
Copyright © 2020 Texas Instruments Incorporated
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