LTC3630EDHC#TRPBF

The LTC3630 is a high efficiency step-down DC/DC converter with internal high side and synchronous power switches that draws only 12μA typical DC supply current while maintaining a regulated output voltage at no load. The LTC3630 can supply up to 500mA load current and features a programmable peak current limit that provides a simple method for optimizing efficiency and for reducing output ripple and component size. The LTC3630’s combination of Burst Mode operation, integrated power switches, low quiescent current, and programmable peak current limit provides high efficiency over a broad range of load currents. With its wide input range of 4V to 65V, the LTC3630 is a robust converter suited for regulating a wide variety of power sources. Additionally, the LTC3630 includes a precise run threshold and soft-start feature to guarantee that the power system start-up is well-controlled in any environment. A feedback comparator output enables multiple LTC3630s to be paralleled in higher current applications. The LTC3630 is available in the thermally-enhanced 3mm×5mm DFN and the MSE16 packages.

Applications

• Industrial Control Supplies
• Medical Devices
• Distributed Power Systems
• Portable Instruments
• Battery-Operated Devices

Key features

• Wide Operating Input Voltage Range: 4V to 65V
• Synchronous Operation for Highest Efficiency
• Internal High Side and Low Side Power MOSFETs
• No Compensation Required
• Adjustable 50mA to 500mA Maximum Output Current
• Low Dropout Operation: 100% Duty Cycle
• Low Quiescent Current: 12μA
• Wide Output Range: 0.8V to VIN
• 0.8V±1% Feedback Voltage Reference
• Precise RUN Pin Threshold
• Internal and External Soft-Start
• Programmable 1.8V, 3.3V, 5V or Adjustable Output
• Few External Components Required
• Low Profile (0.75mm) 3mm × 5mm DFN and Thermally-Enhanced MSE16 Packages