LM62440-Q1

Name: LM62440-Q1
Brand: TI
SKU: LM62440-Q1
Price: 1.589 USD

활성

오토모티브 3V~36V, 4A 저잡음 동기 스텝다운 컨버터

지금 주문

데이터시트

document-pdfAcrobat LM62440-Q1 Automotive 3-V to 36-V, 4-A, Low EMI Synchronous Step-Down Converter datasheet (Rev. E) (영어) PDF | HTML

LM62440-Q1

활성

데이터시트

지금 주문

제품 상세 정보

Iout (max) (A)

4

Vin (min) (V)

3

Vin (max) (V)

36

Topology

Buck

Type

Converter

Switching frequency (min) (kHz)

400

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

Control mode

current mode

Vout (min) (V)

1

Vout (max) (V)

34

Rating

Automotive

Operating temperature range (°C)

-40 to 150

Iq (typ) (A)

0.000007

Iout (max) (A)

4

Vin (min) (V)

3

Vin (max) (V)

36

Topology

Buck

Type

Converter

Switching frequency (min) (kHz)

400

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

Control mode

current mode

Vout (min) (V)

1

Vout (max) (V)

34

Rating

Automotive

Operating temperature range (°C)

-40 to 150

Iq (typ) (A)

0.000007

VQFN-HR (RJR)

14

14 mm² 4 x 3.5

AEC-Q100 qualified for automotive applications
- Temperature grade 1: –40°C to +150°C, T_J
Functional Safety-Capable
- Documentation available to aid functional safety system design
Optimized for ultra low EMI requirements
- HotRod™ package and parallel input path minimize switch node ringing
- Spread spectrum reduces peak emissions
- 2.1-MHz and 400-kHz factory options
- Adjustable SW node rise time
- Pin selectable FPWM mode for constant frequency at light loads
Designed for automotive applications
- Supports 42-V automotive load dump
- ±1% total output regulation accuracy
- V_OUT adjustable from 1 V to 95% of V_IN, with factory options for 5-V and 3.3-V fixed output voltages
High efficiency power conversion at all loads
- 7-µA no load current at 13.5 V_IN, 3.3 V_OUT
- 83% PFM efficiency at 1 mA, 13.5 V_IN, 5 V_OUT
- External bias option for improved efficiency
Suitable for scalable power supplies
- Pin compatible with:
  - LM61440-Q1 (36 V, 4 A, adjustable f_SW)
  - LM61460-Q1 (36 V, 6 A, adjustable f_SW)
  - LMQ62440-Q1 (36 V, 4 A, internal capacitors)

AEC-Q100 qualified for automotive applications
- Temperature grade 1: –40°C to +150°C, T_J
Functional Safety-Capable
- Documentation available to aid functional safety system design
Optimized for ultra low EMI requirements
- HotRod™ package and parallel input path minimize switch node ringing
- Spread spectrum reduces peak emissions
- 2.1-MHz and 400-kHz factory options
- Adjustable SW node rise time
- Pin selectable FPWM mode for constant frequency at light loads
Designed for automotive applications
- Supports 42-V automotive load dump
- ±1% total output regulation accuracy
- V_OUT adjustable from 1 V to 95% of V_IN, with factory options for 5-V and 3.3-V fixed output voltages
High efficiency power conversion at all loads
- 7-µA no load current at 13.5 V_IN, 3.3 V_OUT
- 83% PFM efficiency at 1 mA, 13.5 V_IN, 5 V_OUT
- External bias option for improved efficiency
Suitable for scalable power supplies
- Pin compatible with:
  - LM61440-Q1 (36 V, 4 A, adjustable f_SW)
  - LM61460-Q1 (36 V, 6 A, adjustable f_SW)
  - LMQ62440-Q1 (36 V, 4 A, internal capacitors)

The LM62440-Q1 is an automotive-focused, high-performance, DC-DC synchronous step-down converter. With integrated high-side and low-side MOSFETs, up to 4 A of output current is delivered over a wide input range of 3.0 V to 36 V; 42-V tolerance supports load dump for durations of 400 ms. The LM62440-Q1 implements soft recovery from dropout, eliminating overshoot on the output.

The LM62440-Q1 is specifically designed for minimal EMI. The device incorporates pseudorandom spread spectrum, adjustable SW node rise time, a low-EMI VQFN-HR package featuring low switch node ringing, and an optimized pinout for ease of use. The switching frequency can be synchronized between 200 kHz and 2.2 MHz to avoid noise sensitive frequency bands. In addition, either 2.1-MHz or 400-kHz frequency factory options can be selected for improved efficiency at low operating frequency or smaller solution size at high operating frequency.

Auto mode enables frequency foldback when operating at light loads, allowing an unloaded current consumption of only 7 µA (typical) and high light load efficiency. Seamless transition between PWM and PFM modes, along with very low MOSFET ON resistances and an external bias input, provides exceptional efficiency across the entire load range.

The LM62440-Q1 is an automotive-focused, high-performance, DC-DC synchronous step-down converter. With integrated high-side and low-side MOSFETs, up to 4 A of output current is delivered over a wide input range of 3.0 V to 36 V; 42-V tolerance supports load dump for durations of 400 ms. The LM62440-Q1 implements soft recovery from dropout, eliminating overshoot on the output.

The LM62440-Q1 is specifically designed for minimal EMI. The device incorporates pseudorandom spread spectrum, adjustable SW node rise time, a low-EMI VQFN-HR package featuring low switch node ringing, and an optimized pinout for ease of use. The switching frequency can be synchronized between 200 kHz and 2.2 MHz to avoid noise sensitive frequency bands. In addition, either 2.1-MHz or 400-kHz frequency factory options can be selected for improved efficiency at low operating frequency or smaller solution size at high operating frequency.

Auto mode enables frequency foldback when operating at light loads, allowing an unloaded current consumption of only 7 µA (typical) and high light load efficiency. Seamless transition between PWM and PFM modes, along with very low MOSFET ON resistances and an external bias input, provides exceptional efficiency across the entire load range.

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대안 비교

비교 대상 장치와 동일한 기능을 지원하는 핀 대 핀

LM62435-Q1

활성

오토모티브 3V~36V, 3.5A 저 EMI 동기 스텝다운 컨버터 3.5-A current limit

기술 문서

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모두 보기8

	유형	직함		날짜
*	Data sheet	LM62440-Q1 Automotive 3-V to 36-V, 4-A, Low EMI Synchronous Step-Down Converter datasheet (Rev. E)	PDF \| HTML	2022/04/18
	Functional safety information	LM62440-Q1 Functional Safety, FIT Rate, Failure Mode Distribution, and Pin FMA (Rev. A)	PDF \| HTML	2022/05/17
	Application note	How to Migrate Between LM614xx and LM624xx Product Families	PDF \| HTML	2021/11/01
	Technical article	Introduction to EMI: Standards, causes and mitigation techniques	PDF \| HTML	2021/04/21
	Selection guide	Buck Converter Quick Reference Guide (Rev. B)		2021/04/08
	Technical article	Powering levels of autonomy: a quick guide to DC/DC solutions for SAE autonomy lev		2020/11/18
	Technical article	Optimizing flip-chip IC thermal performance in automotive designs	PDF \| HTML	2019/12/11
	EVM User's guide	LM62440-Q1 EVM User's Guide		2018/06/22

설계 및 개발

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

평가 보드

LM62440EVM — 36V, 저 EMI 4A, 5V 동기, 2MHz, 스텝다운 컨버터 평가 모듈

The LM62440 evaluation module (EVM) is a fully assembled and tested circuit for evaluating the LM62440 synchronous step-down converter. The LM62440 provides exceptional efficiency, low Iq, and low EMI in small solution size.

사용 설명서: PDF

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평가 보드

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