MIC2155 Datasheet | Microchip Technology

Features - Synchronous Buck Control IC with Outputs Switching 180 Degrees Out of Phase - Remote Sensing with Internal Differential Amplifier - 4.5V-to-14.5V Input Voltage Range - Adjustable Output Voltages down to 0.7V - 1% Output Voltage Accuracy - Starts up into a Pre-biased Output - 500 k Hz PWM Operation - Adaptive Gate Drive allows Efficiencies of over 95% - Adjustable Current Limit with no Sense Resistor - Senses Low-Side MOSFET Current - Internal Drivers allow 25A per Phase - Power Good Output allows Simple Sequencing - Dual Enable Pins with Micro-Power Shutdown and UVLO - Programmable Soft-Start Pin - Output Overvoltage Protection - Works with Ceramic Output Capacitors - Multi-Input Supply Capability - Single-Output High-Current Capability with Master/Slave Current Sharing - External Synchronization - Small Footprint 32-Pin 5 mm × 5 mm VQFN - Junction Temperature Range of - 40°C to +125°C General Description The MIC2155 is a two-phase, single-output synchronous buck control IC that features small size, high efficiency, and a high level of flexibility. The IC implements a 500 k Hz Voltage mode PWM control with the outputs switching 180 degrees out of phase. The result of the out-of-phase operation is 1 MHz (or 600 k Hz) input ripple with ripple current cancellation, minimizing the required input filter capacitance. A 1% output voltage tolerance allows the maximum level of system performance. Internal drivers with adaptive gate drive allow the highest efficiency with the minimum external ponents. Two independent enable pins and a power good output are provided, allowing a high level of control and sequencing capability. The MIC2155 has an operating junction temperature ranging from - 40°C to +125°C. Data sheets and support documentation can be found on the Microchip website at .microchip.. Applications - Multi-Output Power Supplies with Sequencing - DSP, FPGA, CPU and ASIC Power Supplies - DSL Modems - Telemunications and Networking Equipment - Servers Package...