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Compact 5 V, 10 A Synchronous Silent Switcher 2 Buck Regulator Reduces Heat, EMI & Footprint in High Power Density Applications

Analog Devices announces the Power by Linear LTC3310S, a 5 V, 10 A low EMI monolithic synchronous buck converter. The device’s fixed frequency peak current mode architecture is ideal for high step-down ratio applications that demand fast transient response.

The LTC3310S uses the Silent Switcher®2 architecture with integrated hot loop bypass capacitors to deliver a highly efficient, small footprint solution at frequencies up to 5 MHz with excellent EMI performance. Multiphase operation enables direct paralleling of multiple devices for higher current. The LTC3310S’ 2.25 V to 5.5 V input range supports a wide variety of applications, including most intermediate bus voltages. Integrated low on-resistance MOSFETs deliver continuous load currents as high as 10 A with minimal thermal derating. Output voltages ranging from 0.5 V to VIN are ideal for point-of-load applications such as high current/low voltage DSP/FPGA/GPU/ASIC reference designs. Other key applications include optical networking, telecom/datacom and automotive systems, distributed power architectures and general medium to high power density systems.

The LTC3310S’ low 35 ns minimum on-time enables a high step-down ratio power supply at high frequency. 100% duty cycle operation delivers low dropout performance. The operating frequency can be synchronized to an external clock. The LTC3310S total reference voltage accuracy is ±1% over the –40 °C to 125 °C operating junction temperature range. Additional features include a power good signal when the output is in regulation, precision enable threshold, output overvoltage protection, thermal shutdown, die temperature monitor, clock synchronization, mode selection and output short-circuit protection. The LTC3310S is available in a thermally enhanced 18-lead 3 mm × 3 mm × 0.94 mm LQFN package. The E- and I- grades are specified from –40 °C to 125 °C operating junction temperature range. All versions are available from stock. For more information, visit http://www.analog.com/LTC3310S

Summary of Features: LTC3310S

  • Silent Switcher®2 Architecture: Ultralow EMI Emissions
  • High Efficiency—4.5 mΩ NMOS & 16 mΩ PMOS
  • Wide Bandwidth, Fast Transient Response
  • VIN Range: 2.25 V to 5.5V
  • VOUT Range: 0.5 V to VIN
  • VOUT Accuracy: ±1%
  • Peak Current Mode Control
  • 35 ns Minimum On-Time
  • Programmable Frequency to 5 MHz
  • Shutdown Current: 1 µA
  • Precision 400 mV Enable Threshold
  • Output Soft-Start with Voltage Tracking
  • Power Good Output
  • Die Temperature Monitor
  • Configurable for Paralleling Power Stages
  • Thermally Enhanced 18-Lead 3 mm × 3 mm LQFN Package


Pricing & Availability

Product Sample Availability Production Availability Price Each Per 1,000
LTC3310S Now Starts at $2.60 Thermally Enhanced 18-Lead 3 mm x 3 mm x 0.94 mm LQFN

Source: https://www.analog.com/en/index.html

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