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RTQ2943GSP-QA

42V 3.5A buck converter, 0.8-42V out, 100kHz-2.5MHz, AEC-Q100, 8-SOP-EP

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Pieza del fabricante：

RTQ2943GSP-QA

Paquete：

8-SOP-EP (3.90 x 4.90 mm)

Marca：
Categorías de productos：
Compromiso de calidad
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Descripción

Productos

The RTQ2943GSP-QA from Richtek Technology is a 42V, 3.5A step-down DC-DC buck converter with AEC-Q100 automotive qualification. It operates from a 4V to 42V input range and provides an adjustable output voltage from 0.8V to 42V at up to 3.5A continuous output current. The switching frequency is programmable from 100kHz to 2.5MHz via an external resistor, allowing optimization of efficiency versus component size.

Especificaciones

Topology Step-Down (Buck)
Input Voltage 4V ~ 42V
Output Voltage 0.8V ~ 42V (adjustable)
Corriente de salida 3.5 A
Reference Voltage 0.8 V (typ)
Switching Frequency 100kHz ~ 2.5MHz (programmable)
Min On-Time 100 ns (típico)
HS Switch RDS(on) 150 mOhm (typ)
Spread Spectrum +6% (EMI reduction)
Paquete 8-SOP-EP (3.90 x 4.90 mm)
Temperatura de funcionamiento -40C to +150C (TJ)
Cualificación AEC-Q100 (-QA suffix)

Características

  • Wide 4V to 42V input range for automotive 12V/24V bus systems
  • AEC-Q100 qualified for automotive applications
  • Programmable switching frequency up to 2.5MHz for compact designs
  • Spread-spectrum modulation reduces peak EMI emissions
  • Power Good output with programmable threshold
  • Internal soft-start with adjustable timing
  • Cycle-by-cycle current limit and thermal shutdown protection
  • 100ns minimum on-time supports high-frequency operation

Aplicaciones

  • Automotive infotainment and ADAS power supply
  • Industrial distributed power bus conversion
  • Battery-powered equipment power management
  • Telecom 48V to logic rail conversion

The Richtek RTQ2943GSP-QA is a 42V, 3.5A step-down DC-DC buck converter with AEC-Q100 automotive qualification. It operates from a wide 4V to 42V input range, making it suitable for automotive 12V and 24V bus systems, as well as industrial distributed power architectures. The adjustable output voltage from 0.8V to 42V with 3.5A output current provides flexibility for powering various loads from logic rails to sensor supplies. The programmable switching frequency from 100kHz to 2.5MHz via a single external resistor on the RT/SYNC pin allows designers to optimize efficiency at lower frequencies or minimize inductor size at higher frequencies. Spread-spectrum modulation adds 6% dithering above the switching frequency to reduce peak EMI emissions, simplifying automotive EMC compliance. The -QA suffix confirms AEC-Q100 Grade 1 qualification for under-hood automotive applications.

The RTQ2943 uses a current-mode control architecture with an internal high-side N-Channel MOSFET. During the on-time, the HS switch connects the input voltage to the output inductor, causing inductor current to ramp up linearly. When the peak current reaches the error amplifier-controlled threshold, the HS switch turns off and the freewheeling (low-side) switch turns on, allowing inductor current to ramp down. The current-mode loop provides inherent cycle-by-cycle current limiting and fast transient response. The RT/SYNC pin programs the switching frequency through an external resistor to ground; alternatively, an external clock signal can synchronize the switching frequency. The FB pin receives the feedback voltage (0.8V reference) from the output voltage divider, and the error amplifier adjusts the peak current setpoint to regulate the output. Spread-spectrum modulation varies the switching frequency by +-6% to spread EMI energy across a wider bandwidth.

Pin Nombre Tipo Función
1 RT/SYNC Entrada Frequency setting resistor / external clock sync
2 ES Entrada Enable (active high)
3 PGOOD Salida Power good open-drain output
4 FB Entrada Feedback voltage input (0.8V reference)
5 SS/TR Entrada Soft-start / tracking capacitor
6 COMP E/S Error amplifier output (compensation)
7 GND Potencia Ground and thermal pad
8 VIN Potencia Input supply (4-42V)
  • Automotive infotainment and ADAS 12V/24V to 5V/3.3V power supply
  • Industrial distributed power bus 24V/48V step-down conversion
  • Battery-powered equipment power management from multi-cell packs
  • Telecom 48V system intermediate bus to logic rail conversion
Fabricante Número de pieza Paquete Notas
Diodos Inc AP64350QSP-13 SOP-8-EP 42V 3.5A automotive buck, similar
TI LM5164DDAR SOP-8-EP 65V 500mA buck, higher voltage
MPS MP8759GD-Z QFN-12 22V 2A sync buck, lower voltage
Richtek RTQ2942GSP-QA 8-SOP-EP Same family, 4.5A variant
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Garantía de calidad

Quality is the core foundation of our long-term global cooperation. With over 20 years of experience in the electronic component industry, Materialparts has built a strict and standardized quality management system covering component sourcing, incoming inspection, full-batch testing, packaging and delivery. We are committed to delivering 100% genuine, high-reliability electronic components for industrial control, automotive electronics, consumer electronics and medical device industries, and fully safeguarding your production and R&D projects.

1. Authorized & Genuine Sourcing Promise

All of our electronic components are procured from official authorized distributors and original manufacturers. We strictly reject counterfeits, refurbished parts, disassembled components and gray-market goods. Every product is guaranteed to be brand-new original parts and fully consistent with the original technical parameters. For branded products such as NXP IC series, we maintain complete supply channel documents to realize full product traceability.

2. Strict Full-batch Quality Inspection

We implement 100% full-batch quality control for all goods before shipment. Our professional QC team conducts multi-dimensional tests including appearance inspection, electrical parameter testing, performance verification and packaging check. Each batch of components is attached with complete inspection reports and batch records. We stick to zero-tolerance standards for defective products to ensure every piece of component meets industrial application requirements.

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Our products comply with a variety of international industry quality standards to adapt to high-standard application scenarios:
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If any product is confirmed to have non-conformity quality problems due to our reasons after receipt, we provide free return, exchange and supplementary delivery services. Our professional quality team will also conduct root cause analysis to optimize our quality control process. We respond to quality feedback within 24 hours to resolve your worries efficiently.

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Email: info@materialparts.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China

 

Envíos y pagos

Materialparts is a professional global supplier of electronic components with over 20 years of industry experience. We provide one-stop supply of passive components, integrated circuits, as well as parts for industrial control, automotive electronics, consumer electronics and medical devices. Below are the unified shipping and payment policies applicable to all orders, samples and bulk purchases worldwide.

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Contact Information

Email: info@materialparts.com

Tel / WhatsApp: +86 13760382860

Servicio y embalaje

Materialparts is a professional electronic component supplier based in Shenzhen, China, with over 20 years of global trading experience. We integrate component procurement, quality inspection, technical support, customized packaging, and global delivery services to provide one-stop supply chain solutions. Our business covers industrial control, automotive electronics, consumer electronics, medical devices and other industries. We always adhere to genuine sources, stable supply and considerate after-sales service.

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We specialize in a full range of passive and active electronic components, including SMD resistors, power resistors, connectors, aviation connectors, LED beads, flexible circuit boards, printed circuit boards, and integrated circuits. Our professional team provides BOM list consolidation, component matching, and alternative model recommendation services. We support sample orders, small-batch trial production, and mass production orders with flexible MOQs to meet diverse procurement needs.

2. Genuine Product Guarantee & Full-process Quality Inspection

All products are sourced from official authorized channels and are 100% original genuine parts. Every batch of goods undergoes strict full-process quality inspection before delivery, with complete batch records and traceability documents provided. Our products comply with AEC-Q standards for automotive electronics and high-reliability specifications for medical devices. We eliminate counterfeits, refurbished parts and defective products from the source to secure your project production.

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Our customer service team responds promptly to inquiries and quotation requests. All in-stock orders will be processed within one working day. We provide stocking reservation services for long-term cooperative customers, effectively solving problems such as component shortages and unstable supply chains.

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6. Global Logistics & Document Services

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Professional Packaging Standards

Electronic components are sensitive to static electricity, collision, moisture and dust. We adopt industry-standard anti-static packaging solutions to fully ensure the integrity of goods during transportation and storage.

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We provide value-added services including personalized packaging, custom labeling and re-reeling according to customer requirements, fully matching your production and warehouse management standards.

Contact Information

For service consultation or packaging customization, please feel free to contact us:
Email: info@materialparts.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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