LTC3311SIV#TRMPBF

LTC®3311S is a very small low noise monolithic step-down DC/DC converter. This device employs silent switcher 2 architecture with internal hot loop bypass capacitors to achieve both low EMI and high efficiency at switching frequencies as high as 5MHz. For systems with higher power requirements, multi-phasing parallel converters is readily implemented. The LTC3311S uses a constant frequency, peak current mode control architecture for fast transient response. A 500mV reference allows for low voltage outputs. Its 100% duty cycle operation delivers low dropout. Other features include a power good signal when the output is in regulation, precision enable threshold, output overvoltage protection, thermal shutdown, a temperature monitor, clock synchronization, mode selection and output short circuit protection. Typical applications are automotive/industrial/communications, servers, telecom power supplies, distributed DC power systems (POL), FPGA, ASIC, µP core supplies.

• Ultralow EMI emissions, 4.5mohm NMOS and 16mohm PMOS
• Wide bandwidth, fast transient response, die temperature monitor
• Safely tolerates inductor saturation in overload, peak current mode control
• Operating supply voltage (VIN) of 2.25V to 5.5V, VOUT range from 0.5V to VIN
• VOUT accuracy of ±1% with remote sense, Temperature range from –40°C to 125°C
• Minimum on-time is 35ns
• Shutdown current of 1µA, output soft-start with voltage tracking
• Configurable for paralleling power stages in forced continuous mode
• 18-lead (3mm × 3mm) LQFN (laminate package with QFN footprint) package
• Pin compatible with LTC3310/LTC3310S and LTC3311

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party