LMQ66430-Q1

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

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Synchroner Abwärtswandler, 36 V, 3 A, mit niedriger EMI und 1,5-µA-Ruhestrom für die Automobilindust

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Datenblatt

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

LMQ66430-Q1

AKTIV

Datenblatt

Jetzt bestellen

Produktdetails

Rating

Automotive

Operating temperature range (°C)

-40 to 150

TI functional safety category

Functional Safety-Capable

Topology

Buck

Type

Converter

Iout (max) (A)

3

Vin (min) (V)

3

Vin (max) (V)

36

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

Iq (typ) (µA)

1.5

Duty cycle (max) (%)

98

Rating

Automotive

Operating temperature range (°C)

-40 to 150

TI functional safety category

Functional Safety-Capable

Topology

Buck

Type

Converter

Iout (max) (A)

3

Vin (min) (V)

3

Vin (max) (V)

36

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

Iq (typ) (µA)

1.5

Duty cycle (max) (%)

98

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 1mA
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 42V automotive load dump transients
- Supports 3VIN for automotive cold crank
Miniature design size and low component cost:
- Integrated input bypass capacitors and bootstrap capacitor reducing EMI
- 2.6mm × 2.6mm 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 1mA
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 42V automotive load dump transients
- Supports 3VIN for automotive cold crank
Miniature design size and low component cost:
- Integrated input bypass capacitors and bootstrap capacitor reducing EMI
- 2.6mm × 2.6mm enhanced HotRod QFN package with wettable flanks
- Internal control loop compensation

The LMQ664x0-Q1 is the industry smallest 36V, 3A (available in 2A and 1A 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 2.7V to 36V (after start-up or after operating) with transients up to 42V.

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 1.5µA at 13.5VIN 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 pinout. 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 (excellent choice 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 36V, 3A (available in 2A and 1A 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 2.7V to 36V (after start-up or after operating) with transients up to 42V.

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 1.5µA at 13.5VIN 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 pinout. 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 (excellent choice pin FMEA). The rich feature set of the LMQ664x0-Q1 is designed to simplify implementation for a wide range of automotive end equipment.

filter

Andere AC/DC- und DC/DC-Wandler (integrierter FET) suchen

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Technische Dokumentation

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	Typ	Titel		Datum
*	Data sheet	LMQ664x0-Q1 , 36V, 1A, 2A, and 3A, Ultra-Small, Synchronous Automotive Step-Down Converter With Integrated VIN Bypass and CBOOT Capacitors datasheet (Rev. D)	PDF \| HTML	25 Nov 2024
	Functional safety information	LMQ664x0 and LMQ664x0-Q1 Functional Safety FIT Rate, FMD and Pin FMA (Rev. A)	PDF \| HTML	05 Nov 2024
	White paper	Addressing Performance Challenges in Nano-IQ Systems (Rev. A)	PDF \| HTML	11 Mär 2024
	Application brief	Step-Down Converter Capacitor Integration Reducing Effort for CISPR 25 Class 5 Compliance	PDF \| HTML	18 Jan 2023
	Technical article	How buck regulators with integrated capacitors help lower EMI and save board space	PDF \| HTML	16 Mär 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 Okt 2021

Design und Entwicklung

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Evaluierungsplatine

LMQ66430-2EVM — LMQ66430-Evaluierungsmodul für 36-V, synchronen 3-A-Abwärtswandler in verbessertem HotRod™ QFN

Das Evaluierungsmodul (EVM) LMQ66430-2EVM unterstützt Entwickler bei der Evaluierung des Betriebs und der Leistung des LMQ66430-Q1-Bausteins, eines synchronen DC/DC-Abwärtswandlers, der bis zu 3 A Laststrom aus einer Eingangsspannung von bis zu 36 V erreicht. Der LMQ66430-Q1 verfügt über einen (...)

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