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LTC3615EUF

6A Monolithic Synchronous Buck, 2.25-5.5V, 4MHz, 22mOhm, QFN-28

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Pieza del fabricante：

LTC3615EUF

Paquete：

QFN-28 (4 x 5 x 0.75 mm, exposed pad)

Marca：
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Compromiso de calidad
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Descripción

Productos

The LTC3615EUF from Analog Devices is a 6 A, 2.25 V to 5.5 V input monolithic synchronous buck regulator with 22 mOhm on-resistance switches, operating at up to 4 MHz switching frequency in a QFN-28 package.

Especificaciones

Topology Monolithic Synchronous Buck
Input Voltage 2.25 V to 5.5 V
Output Voltage 0.6 V to 5.5 V (Adjustable)
Corriente de salida 6 A
Switching Frequency 500 kHz to 4 MHz (Programmable)
Internal Switch RDS(on) 22 mOhm (top + bottom combined)
Efficiency Up to 95%
Reference Voltage 0.6 V (±1%)
Paquete QFN-28 (4 x 5 mm)
Temperatura de funcionamiento -40°C to 85°C

Características

  • 6 A output current with 22 mOhm integrated MOSFETs
  • Programmable frequency from 500 kHz to 4 MHz
  • Selectable Burst Mode or forced continuous mode
  • Synchronizable switching frequency
  • 100% duty cycle for low dropout

Aplicaciones

  • Point-of-load regulation for FPGAs and processors
  • Server and storage system power supplies
  • Portable instruments and battery-powered devices
  • Telecom and networking equipment

The LTC3615EUF from Analog Devices is a high-current monolithic synchronous step-down DC/DC converter delivering up to 6 A output from a 2.25 V to 5.5 V input. The device integrates 22 mOhm combined on-resistance top and bottom MOSFET switches in a compact QFN-28 package. Switching frequency is programmable from 500 kHz to 4 MHz via an external RT resistor and can be synchronized to an external clock. The device supports Burst Mode operation for high efficiency at light loads, or forced continuous operation for lower output ripple. The 0.6 V reference voltage allows output voltages as low as 0.6 V. 100% duty cycle operation enables low dropout in applications where VIN approaches VOUT.

The LTC3615EUF uses a constant-frequency current-mode control architecture. The internal oscillator sets the switching frequency (500 kHz to 4 MHz) via the RT pin. The integrated top and bottom MOSFET switches (22 mOhm combined RDS(on)) alternate to step down the input voltage. Current-mode control simplifies loop compensation and provides cycle-by-cycle current limiting. In Burst Mode, the device delivers energy in controlled bursts and enters sleep between bursts, reducing switching losses at light loads. The MODE/SYNC pin selects operating mode and accepts an external clock for synchronization. The 0.6 V feedback reference is compared against the output voltage divided by the external resistor divider. The 100% duty cycle capability keeps the top switch on continuously when VIN drops close to VOUT, minimizing dropout voltage.

Grupo Pin Nombre Tipo Función
1 RUN Entrada Enable / run control
2 ITH E/S Error amplifier compensation
3 VFB Entrada Feedback voltage (0.6V reference)
4 SGND Suelo Signal ground
5-8 SW Salida Switch node (4 pins)
9-12 PGND Suelo Power ground (4 pins)
13-16 PVIN Potencia Power input supply (4 pins)
17 SVIN Potencia Signal input supply
18 RT Entrada Frequency set resistor
19 MODE/SYNC E/S Mode select / external sync
20 PGOOD Salida Power good indicator
21 BST Potencia Bootstrap for top switch
22-23 TR/SS E/S Soft-start / tracking
24-28 NC/GND -/Ground No-connect and ground
  • FPGA and processor core voltage POL regulation (1.0V, 1.2V, 1.8V)
  • Server and storage system DDR memory power
  • Portable instrument DC-DC conversion from Li-ion
  • Networking equipment point-of-load supplies
  • Battery-powered systems with high-efficiency buck regulation
Fabricante Número de pieza Paquete Notas
Dispositivos analógicos LTC3615IUF QFN-28 -40°C to 125°C I-grade
Dispositivos analógicos LTC3414EFE#PBF TSSOP-20 EP 4A version, same family
Texas Instruments TPS62160DRVR WSON-6 3A, 3-17V input
Monolithic Power MP8860DN-LF-Z QFN-22 8A, 4MHz synchronous buck
Richtek RT8012AGQW WQFN-20 4A, 1.5MHz synchronous buck
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Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China

 

Envíos y pagos

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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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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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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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