Texas Instruments LM61495-Q1 Handleiding

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LM6x4xx-Q1 Pin-Compatible, 6A, 8A, 10A, Automotive Buck Converter Optimized for

Power Density and Low EMI

1 Features

•AEC-Q100 qualified for automotive applications:

–Temperature grade 1: –40°C to +125°C, T

A

•Functional Safety-Capable

–Documentation available to aid functional safety

system design

•Input voltage range from 3V to 36V

•RESET output with filter and delayed release

•Designed for low EMI:

–CISPR 25 class 5 compliant EVM

–Pin-configurable spread spectrum

–Adjustable SW node rise time

–Above and below AM band operation: pin

configurable 400kHz and 2.2MHz fixed or

adjustable from 200kHz – 2.2MHz

–Low EMI symmetrical pinout

–Light load mode is pin-configurable for constant

frequency or pulse frequency modulation (PFM)

•High-efficiency design

–95% efficient for an 8A load

–5µA input current while unloaded in auto mode

–< 1µA shutdown current (typical)

•High power density

–Built-in compensation, soft start, current limit,

thermal shutdown, and UVLO

–4.5mm × 3.5mm wettable flank QFN package

–ϴ

JA

= 21.6°C/W, measured on

LM61495RPHEVM

•Pin-to-pin compatible with LM61480T-Q1 and

LM61495T-Q1 for dual-side cooling providing

enhanced thermal performance

2 Applications

•Automotive infotainment

•Instrument cluster

•Advanced driver assistance systems (ADAS)

3 Description

The LM6x4xx-Q1 buck regulator family are

automotive-focused regulators providing either fixed

or an adjustable output voltage which can be set

from 1 V to 95% of expected input voltage. These

regulators operate under a wide input voltage range of

3 to 36V and has transient tolerance up to 42 V.

The family is designed for low EMI. The device

incorporates pin selectable spread spectrum, and an

adjustable SW node rise time. Dual Random Spread

Spectrum (DRSS) frequency hopping is set to ±4%

(typical), drastically reducing peak emissions through

a combination of triangular and pseudorandom

modulation, and includes advanced techniques to

reduce output voltage ripple caused by spread

spectrum modulation.

An open-drain RESET output, with filtering and

delayed release, gives a true indication of system

status. In auto mode the device automatically

transitions between Fixed frequency Pulse Width

Modulation (FPWM) and Pulse Frequency Modulation

(PFM) modes of operation, allowing an unloaded

current consumption of only 5 µA (typical).

Electrical characteristics are specified over a junction

temperature range of –40°C to +150°C.

Device Information

PART NUMBER

(3)

PACKAGE

(1)

PACKAGE SIZE

(2)

LM61495-Q1

RPH (VQFN-HR, 16)4.5mm × 3.5mmLM61480-Q1

LM62460-Q1

(1)For more information, see Section 11.

(2)The package size (length × width) is a nominal value and

includes pins, where applicable.

(3)See the Device Comparison Table.

RESET

EN

PGND1

AGND

VCC

CBOOT

SW

FB

BIAS

RBOOT

3.0 V to 36 V input

VIN1

PGND2

VIN2

MODE/SYNC

RT

SPSP

Simplified Schematic

EVM Efficiency: V

OUT

= 5V, F

SW

= 2.2MHz

LM61480-Q1, LM61495-Q1, LM62460-Q1

SNVSBA0E – FEBRUARY 2020 – REVISED OCTOBER 2025

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 specificaties