NCP3135MNTXG

NCP3135 is a fully integrated synchronous buck converter for 3.3 V and 5 V step−down applications. It can provide up to 5 A DC load and 6 A instantaneous load current. NCP3135 supports high efficiency, fast transient response and provides power good indicator. The control scheme includes two operation modes: FCCM and automatic CCM/DCM. In automatic CCM/DCM mode, the controller can smoothly switch between CCM and DCM, where converter runs at reduced switching frequency with much higher efficiency. NCP3135 is available in 3 mm x 3 mm QFN−16 pin package. NCP3135 is a low input voltage 5 A high performance synchronous buck converter with two integrated N−MOSFETs. NCP3135’s output voltage range is from 0.6 V to 0.84 x Vin and it has wide input voltage range from 2.9 V to 5.5 V. The features of NCP3135 include supporting pre−bias start−up to protect sensitive loads, cycle−by−cycle over−current limiting and short circuit protection, power good monitor, over voltage and under voltage protection, built in output discharge and thermal shutdown. NCP3135 provides two operation modes to fit various application requirements. The automatic CCM/DCM mode operation provides reduced power loss and increases the efficiency at light load. The adaptive power control architecture enables smooth transition between light load and heavy load while maintaining fast response to load transients.

Applications

• 5 V Step Down Rail
• 3.3 V Step Down Rail

Key features

• High Efficiency in both CCM and DCM
• High Operation Frequency at 1.1 MHz
• Support MLCC Output Capacitor
• Small Footprint, 3 mm×3 mm, 16−pin QFN Package
• Up to 5 A Continuous Output Current
• 6 A Instantaneous Load Current
• 2.9 V to 5.5 V Wide Conversion Voltage Range
• Output Voltage Range from 0.6 V to 0.84 X Vin
• Internal 1 ms Soft−Start
• Automatic Power−Saving Mode
• Voltage Mode Control
• Support Pre-bias Start−up Functionality
• Output Discharge Operation
• Over−Temperature Protection
• Built−in Over−Voltage, Under−Voltage and Over-Current Protection
• Power Good Indicator
• This is a Pb−Free Device