LMR50410-Q1 SIMPLE SWITCHER® 4-V to 36-V, 1-A Buck Converter in SOT-23-6

package

1 Features

• 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 output option

• Create a custom design using the LMR50410-Q1

with the WEBENCH® Power Designer

2 Applications

• Body electronics and lighting

• Infotainment and cluster

• ADAS

• General purpose wide VIN power supplies

3 Description

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 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.

Device Information (1)

PART NUMBER

PACKAGE

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.

CB

SW

L

FB

VIN

EN

GND

Simplified Schematic

0.001 0.002

0.005 0.01 0.02

0.05

0.1

0.2 0.3 0.5

1

40

50

60

70

80

90

100

2.1MHz , PFM

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LMR50410-Q1

SLUSDW4 – JULY 2020

Copyright © 2020 Texas Instruments Incorporated

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LMR50410-Q1

SLUSDW4 – JULY 2020

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.