LMQ66430-Q1

Name: LMQ66430-Q1
Brand: TI
SKU: LMQ66430-Q1
Price: 1.55 USD

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Convertidor reductor síncrono bajo de 36 V y 3 A de grado automotriz con IQ de 1,5 µA

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Hoja de datos

document-pdfAcrobat LMQ664x0-Q1 , 36-V, 1-A, 2-A, and 3-A, Ultra-Small, Synchronous Automotive Step-Down Converter With Integrated VIN Bypass and CBOOT Capacitors datasheet (Rev. C) (Inglés) PDF | HTML

LMQ66430-Q1

ACTIVO

Hoja de datos

Haga su pedido ahora

Detalles del producto

Iout (max) (A)

3

Vin (min) (V)

3

Vin (max) (V)

36

Topology

Buck

Type

Converter

Switching frequency (min) (kHz)

200

Switching frequency (max) (kHz)

2200

Features

Enable, Fixed Output, Forced PWM, Frequency synchronization, Light Load Efficiency, Low Noise, Over Current Protection, Power good, Soft Start Fixed, Spread Spectrum, Synchronous Rectification, UVLO adjustable, Wettable flanks package

Control mode

current mode

Vout (min) (V)

1

Vout (max) (V)

35

Rating

Automotive

Operating temperature range (°C)

-40 to 150

Iq (typ) (A)

0.0000015

Iout (max) (A)

3

Vin (min) (V)

3

Vin (max) (V)

36

Topology

Buck

Type

Converter

Switching frequency (min) (kHz)

200

Switching frequency (max) (kHz)

2200

Features

Enable, Fixed Output, Forced PWM, Frequency synchronization, Light Load Efficiency, Low Noise, Over Current Protection, Power good, Soft Start Fixed, Spread Spectrum, Synchronous Rectification, UVLO adjustable, Wettable flanks package

Control mode

current mode

Vout (min) (V)

1

Vout (max) (V)

35

Rating

Automotive

Operating temperature range (°C)

-40 to 150

Iq (typ) (A)

0.0000015

VQFN-FCRLF (RXB)

14

6.76 mm² 2.6 x 2.6

Functional Safety-Capable
- Documentation available to aid functional safety system design
AEC-Q100-qualified for automotive applications:
- Temperature grade 1: –40°C to +125°C, TA
Optimized for low EMI requirements:
- Facilitates CISPR 25 class 5 compliance
- Integrated bypass and boot capacitors reduce EMI
- Dual random spread spectrum reduces peak emissions
- Enhanced HotRod™ QFN package minimizes switch node ringing
Greater than 85% efficiency at 1 mA
Designed for automotive applications:
- Junction temperature range: –40°C to +150°C
- NC pin between critical pins for better reliability
- Best in-class pin FMEA
- Supports 42-V automotive load dump transients
- Supports 3-VIN for automotive cold crank
Miniature design size and low component cost:
- Integrated input bypass capacitors and bootstrap capacitor reducing EMI
- 2.6-mm × 2.6-mm enhanced HotRod QFN package with wettable flanks
- Internal control loop compensation

Functional Safety-Capable
- Documentation available to aid functional safety system design
AEC-Q100-qualified for automotive applications:
- Temperature grade 1: –40°C to +125°C, TA
Optimized for low EMI requirements:
- Facilitates CISPR 25 class 5 compliance
- Integrated bypass and boot capacitors reduce EMI
- Dual random spread spectrum reduces peak emissions
- Enhanced HotRod™ QFN package minimizes switch node ringing
Greater than 85% efficiency at 1 mA
Designed for automotive applications:
- Junction temperature range: –40°C to +150°C
- NC pin between critical pins for better reliability
- Best in-class pin FMEA
- Supports 42-V automotive load dump transients
- Supports 3-VIN for automotive cold crank
Miniature design size and low component cost:
- Integrated input bypass capacitors and bootstrap capacitor reducing EMI
- 2.6-mm × 2.6-mm enhanced HotRod QFN package with wettable flanks
- Internal control loop compensation

The LMQ664x0-Q1 is the industry smallest 36-V, 3-A (available in 2-A and 1-A variants) synchronous step-down DC/DC converter with an integrated bypass and bootstrap capacitor in an enhanced HotRod QFN package. This easy-to-use converter supports a wide input voltage range of 2.7 V to 36 V (after start-up or after operating) with transients up to 42 V.

The LMQ664x0-Q1 is specifically designed to meet low standby power requirements for always-on, automotive applications. Auto mode enables frequency foldback when operating at light loads, allowing an unloaded typical current consumption of 1.5 µA at 13.5 VIN and high light load efficiency. A seamless transition between PWM and PFM modes along with very low MOSFET ON resistances makes sure there is exceptional efficiency across the entire load range. The control architecture (peak current mode) and feature set are optimized for an ultra-small design size with minimal output capacitance. The device minimizes input filter size by using dual-random spread spectrum (DRSS), a low-EMI enhanced HotRod QFN package, and an optimized pin-out. The MODE/SYNC pin can be used to set or synchronize the frequency to avoid noise sensitive frequency bands. There are NC pins between critical high voltage pins, reducing potential failures (optimal pin FMEA). The rich feature set of the LMQ664x0-Q1 is designed to simplify implementation for a wide range of automotive end equipment.

The LMQ664x0-Q1 is the industry smallest 36-V, 3-A (available in 2-A and 1-A variants) synchronous step-down DC/DC converter with an integrated bypass and bootstrap capacitor in an enhanced HotRod QFN package. This easy-to-use converter supports a wide input voltage range of 2.7 V to 36 V (after start-up or after operating) with transients up to 42 V.

The LMQ664x0-Q1 is specifically designed to meet low standby power requirements for always-on, automotive applications. Auto mode enables frequency foldback when operating at light loads, allowing an unloaded typical current consumption of 1.5 µA at 13.5 VIN and high light load efficiency. A seamless transition between PWM and PFM modes along with very low MOSFET ON resistances makes sure there is exceptional efficiency across the entire load range. The control architecture (peak current mode) and feature set are optimized for an ultra-small design size with minimal output capacitance. The device minimizes input filter size by using dual-random spread spectrum (DRSS), a low-EMI enhanced HotRod QFN package, and an optimized pin-out. The MODE/SYNC pin can be used to set or synchronize the frequency to avoid noise sensitive frequency bands. There are NC pins between critical high voltage pins, reducing potential failures (optimal pin FMEA). The rich feature set of the LMQ664x0-Q1 is designed to simplify implementation for a wide range of automotive end equipment.

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Documentación técnica

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	Tipo	Título		Fecha
*	Data sheet	LMQ664x0-Q1 , 36-V, 1-A, 2-A, and 3-A, Ultra-Small, Synchronous Automotive Step-Down Converter With Integrated VIN Bypass and CBOOT Capacitors datasheet (Rev. C)	PDF \| HTML	11 dic 2023
	White paper	Addressing Performance Challenges in Nano-IQ Systems (Rev. A)	PDF \| HTML	13 feb 2024
	Application brief	Step-Down Converter Capacitor Integration Reducing Effort for CISPR 25 Class 5 Compliance	PDF \| HTML	18 ene 2023
	Functional safety information	LMQ664x0 and LMQ664x0-Q1 Functional Safety FIT Rate, FMD and Pin FMA	PDF \| HTML	16 dic 2022
	Technical article	How buck regulators with integrated capacitors help lower EMI and save board space	PDF \| HTML	16 mar 2022
	User guide	LMQ66430-Q1 Buck Controller Evaluation Module User's Guide	PDF \| HTML	02 feb 2022
	Certificate	LMQ66430EVM-2M EU RoHS Declaration of Conformity (DoC)		21 oct 2021

Diseño y desarrollo

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Placa de evaluación

LMQ66430-2EVM — Módulo de evaluación LMQ66430 para convertidor reductor síncrono de 36 V y 3 A con HotRod™ QFN mejor

El módulo de evaluación (EVM) LMQ66430-2EVM ayuda a los diseñadores a evaluar el funcionamiento y el rendimiento del dispositivo LMQ66430-Q1, un convertidor CC/CC reductor síncrono capaz de conducir hasta 3 A de corriente de carga a partir de una tensión de entrada de hasta 36 V. El LMQ66430-Q1 (...)

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