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 V_IN 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.

• View the LTC3310S product page, download the data sheet, order samples and evaluation boards: http://www.analog.com/LTC3310S

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
• V_IN Range: 2.25 V to 5.5V
• V_OUT Range: 0.5 V to V_IN
• V_OUT 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