신규

LM64440-Q1

Name: LM64440-Q1
Brand: TI
SKU: LM64440-Q1
Price: 1.95 USD

활성

핀 조정 가능 저부하 모드를 지원하는 오토모티브, 3V~36V, 4A 저 EMI 동기 벅 컨버터

지금 주문

데이터 시트

document-pdfAcrobat LM644x0-Q1 3V to 36V, 4A and 6A, Automotive, Synchronous Buck DC/DC Converters With Pin Selectable Light-Load Mode, Optimized for Reliability and Low EMI datasheet (Rev. B) (영어) PDF | HTML

LM64440-Q1

활성

데이터 시트

지금 주문

제품 상세 정보

Rating

Automotive

Operating temperature range (°C)

-40 to 150

TI functional safety category

Functional Safety-Capable

Topology

Buck

Type

Converter

Iout (max) (A)

4

Vin (min) (V)

3

Vin (max) (V)

36

Switching frequency (min) (kHz)

200

Switching frequency (max) (kHz)

2200

Features

Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Soft Start Fixed, Spread Spectrum, Synchronous Rectification, Wettable flanks package

EMI features

Low parasitic Hotrod packaging, Spread Spectrum

Vout (min) (V)

1

Vout (max) (V)

34.2

Iq (typ) (µA)

7

Duty cycle (max) (%)

87

Rating

Automotive

Operating temperature range (°C)

-40 to 150

TI functional safety category

Functional Safety-Capable

Topology

Buck

Type

Converter

Iout (max) (A)

4

Vin (min) (V)

3

Vin (max) (V)

36

Switching frequency (min) (kHz)

200

Switching frequency (max) (kHz)

2200

Features

Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Soft Start Fixed, Spread Spectrum, Synchronous Rectification, Wettable flanks package

EMI features

Low parasitic Hotrod packaging, Spread Spectrum

Vout (min) (V)

1

Vout (max) (V)

34.2

Iq (typ) (µA)

7

Duty cycle (max) (%)

87

VQFN-FCRLF (RYF)

22

14 mm² 4 x 3.5

AEC-Q100 qualified for automotive applications
- Device temperature grade 1: –40°C to +125°C ambient operating temperature
Functional Safety-Capable
- Documentation available to aid functional safety system design
Versatile synchronous buck DC/DC converter
- Wide input voltage range of 3V to 36V with tolerance for load-dump transients up to 42V
- 4A and 6A options available
- 1% accurate, fixed 3.3V, 5V, or adjustable output voltage from 1V to 95% VIN
- 150°C maximum junction temperature
- Fixed 2.1MHz switching frequency (adjustable from 200kHz to 2.2MHz using a SYNC signal)
Improved reliability with optimized pinout design and clearance for short-circuit-to-adjacent-pin test
Designed for low EMI requirements
- Enhanced HotRod™ QFN package with dual input paths reduces switch-node ringing
- Pin-configurable spread spectrum modulation
- Selectable FPWM or PFM mode at light loads
High efficiency across the full load range
- 92.5% at 13.5VIN, 5VOUT, 6A, 2.1MHz
- 7µA typical at 3.3VOUT no-load input current
- 0.6µA typical shutdown quiescent current
- 0.6V typical dropout at full load
- External bias option for improved efficiency
Create a custom regulator design using the LM644x0-Q1 with WEBENCH Power Designer

AEC-Q100 qualified for automotive applications
- Device temperature grade 1: –40°C to +125°C ambient operating temperature
Functional Safety-Capable
- Documentation available to aid functional safety system design
Versatile synchronous buck DC/DC converter
- Wide input voltage range of 3V to 36V with tolerance for load-dump transients up to 42V
- 4A and 6A options available
- 1% accurate, fixed 3.3V, 5V, or adjustable output voltage from 1V to 95% VIN
- 150°C maximum junction temperature
- Fixed 2.1MHz switching frequency (adjustable from 200kHz to 2.2MHz using a SYNC signal)
Improved reliability with optimized pinout design and clearance for short-circuit-to-adjacent-pin test
Designed for low EMI requirements
- Enhanced HotRod™ QFN package with dual input paths reduces switch-node ringing
- Pin-configurable spread spectrum modulation
- Selectable FPWM or PFM mode at light loads
High efficiency across the full load range
- 92.5% at 13.5VIN, 5VOUT, 6A, 2.1MHz
- 7µA typical at 3.3VOUT no-load input current
- 0.6µA typical shutdown quiescent current
- 0.6V typical dropout at full load
- External bias option for improved efficiency
Create a custom regulator design using the LM644x0-Q1 with WEBENCH Power Designer

The LM644x0-Q1 derives from a family of automotive, synchronous, buck, DC/DC converters with excellent efficiency and ultra-low IQ. With integrated high-side and low-side MOSFETs, up to 6A of output current is delivered over a wide input voltage range from 3V to 36V, with support for load-dump transients up to 42V. The converter implements soft recovery from dropout to eliminate overshoot on the output.

The LM644x0-Q1 incorporates numerous features for excellent EMI performance, including spread-spectrum frequency modulation, a low-EMI Enhanced HotRod QFN package that mitigates switch-node ringing, and a symmetrical pinout for excellent input capacitor placement. The switching frequency is synchronizable between 200kHz and 2.2MHz to avoid sensitive frequency bands, while optimizing efficiency or design size based on the specific requirements of the application.

PFM mode enables frequency foldback during light-load operation, allowing an unloaded current consumption of only 7µA (typical) and high light-load efficiency. A seamless transition between PWM and PFM modes, along with low MOSFET on-resistances and an external bias input, provides exceptional efficiency and thermal performance across the entire load range. The package has several NC pins between critical power pins, which improve the Failure Modes and Effects Analysis (FMEA) result.

The LM644x0-Q1 derives from a family of automotive, synchronous, buck, DC/DC converters with excellent efficiency and ultra-low IQ. With integrated high-side and low-side MOSFETs, up to 6A of output current is delivered over a wide input voltage range from 3V to 36V, with support for load-dump transients up to 42V. The converter implements soft recovery from dropout to eliminate overshoot on the output.

The LM644x0-Q1 incorporates numerous features for excellent EMI performance, including spread-spectrum frequency modulation, a low-EMI Enhanced HotRod QFN package that mitigates switch-node ringing, and a symmetrical pinout for excellent input capacitor placement. The switching frequency is synchronizable between 200kHz and 2.2MHz to avoid sensitive frequency bands, while optimizing efficiency or design size based on the specific requirements of the application.

PFM mode enables frequency foldback during light-load operation, allowing an unloaded current consumption of only 7µA (typical) and high light-load efficiency. A seamless transition between PWM and PFM modes, along with low MOSFET on-resistances and an external bias input, provides exceptional efficiency and thermal performance across the entire load range. The package has several NC pins between critical power pins, which improve the Failure Modes and Effects Analysis (FMEA) result.

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기타 AC/DC 및 DC/DC 컨버터(통합 FET) 찾기

다운로드 스크립트와 함께 비디오 보기 동영상

기술 자료

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3개 모두 보기

	유형	직함		날짜
*	Data sheet	LM644x0-Q1 3V to 36V, 4A and 6A, Automotive, Synchronous Buck DC/DC Converters With Pin Selectable Light-Load Mode, Optimized for Reliability and Low EMI datasheet (Rev. B)	PDF \| HTML	2024/08/23
	Functional safety information	LM644X0-Q1 Functional Safety FIT Rate, FMD and Pin FMA (Rev. A)	PDF \| HTML	2024/06/04
	User guide	LM63460-Q1 and LM64460-Q1 EVM User's Guide	PDF \| HTML	2021/12/16

설계 및 개발

추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.

평가 보드

LM64460EVM — LM64460-Q1 평가 모듈 오토모티브 3V~36V, 6A 저 EMI 동기 스텝다운 컨버터

LM64460EVM-2MHZ 고밀도 평가 모듈(EVM)은 LM64460-Q1 고성능 차량용 동기 벅 DC/DC 컨버터의 성능을 보여주도록 설계되었습니다. EVM은 5.5V~36V의 넓은 입력 전압 범위에서 작동하여 1% 이상의 설정값 정확도와 최대 6A 출력 전류를 가진 고정 5V 출력을 제공합니다. 고장 상태 시 레귤레이터를 보호하기 위한 여러 기능에는 저전압 잠금(UVLO), 내부 소프트 시작, 히컵 모드 과전류 보호(OCP), 오픈 드레인 PGOOD 표시기 및 열 셧다운 등이 있습니다. 확산 스펙트럼 주파수 변조 및 (...)

사용 설명서: PDF | HTML

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계산 툴

LM63460-LM64460DESIGN-CALC — LM63460-Q1 및 LM64460-Q1 빠른 시작 설계 툴

LM63460-Q1 및 LM64460-Q1 컨버터 빠른 시작 설계 툴을 시작합니다. 이 독립형 툴은 이 동기식 벅 전원 컨버터 제품군에 기반한 DC/DC 벅 레귤레이터 설계를 통해 전원 공급 장치 엔지니어를 용이하게 하고 지원합니다. 따라서 사용자는 애플리케이션 요구 사항을 충족하기 위해 최적화된 설계에 신속하게 도착할 수 있습니다.

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