MIC2133 - Microchip

MIC2133 Advanced COT Buck Controller

The MIC2133 is a constant on-time, dual phase, synchronous buck controller featuring a unique adaptive on-time control architecture with HyperLight Load and phase shedding features enabled. The MIC2133 operates over an input supply range from 8V to 75V. The output voltage is adjustable down to 0.6V with an ensured accuracy of ±1% at the FBS pin. The device o.

Features

• Input Voltage Range: 8V to 75V
• Input Down to 2V when VDD = 5V from External Supply
• Adjustable Output Voltage from 0.6V to 28V
• Adaptive Constant On-Time Control: - High Delta V operation - Any Capacitor™ stable
• 0.6V Internal Reference with ±1% Accuracy
• Ripple Injection from Third Node Allows Greater than 50% Duty Cycles
• HyperLight Load® and Automatic Phase Shedding
• Ability to Interface with External MCU
• Accurate Current Balancing Between Phases
• Accurate 180° Phasing of Outputs
• 100 kHz to 1 MHz Switching Frequency per Phase
• High-Voltage Internal 5V LDO for Single-Supply O.