MIC33M656-FAYMP-TR

The MIC33M656 is an I²C programmable, high-efficiency, low-voltage input, 6A current, synchronous step-down regulator power module with integrated inductor. The Constant-On-Time (COT) control architecture with HyperLight Load mode provides very high efficiency at light loads, while still having ultra-fast transient response. The I²C interface allows programming the output voltage, between 0.6V and 1.28V with 5mV resolution, or between 0.6V and 3.84V with 10mV and 20mV resolution. Three different default voltage options (0.6V, 0.9V and 1.0V) are provided so that the application can be started with a safe voltage level and then moved to high-performance modes under I²C control. An open-drain Power Good output facilitates output voltage monitoring and sequencing. If set in shutdown (EN = GND), the MIC33M656 typically draws 1.5μA, while the output is discharged through a 10Ω pull-down (if the output discharge feature is enabled). The MIC33M656 pinout is compatible with the MIC33M650, so that applications can be easily converted. The 2.4V to 5.5V input voltage range, low shutdown and quiescent currents make the MIC33M656 ideal for single-cell Li-ion battery-powered applications. The 100% duty cycle capability provides low dropout operation, extending operating range in portable systems. The MIC33M656 is available in a thermally efficient, 53-Lead, 6mm×10mm×3mm B1QFN package, with an operating junction temperature range from -40°C to +125°C.

Applications

• Solid-State Drives (SSD)
• FPGAs, DSP and Low-Voltage ASIC Power

Key features

• Input Voltage Range: 2.4V to 5.5V
• 6A Output Current
• Multiple Faults Indication through I²C
• I²C Programmable:
• Output voltage: 0.6V - 1.28V, 5mV resolution; 0.6V - 3.84V, 10/20mV resolution
• Slew rate: 0.2ms/V - 3.2ms/V
• On time (switching frequency)
• High-side current limit: 3.5A - 10A
• Enable delay: 0.2ms - 3ms
• Output discharge when disabled (EN = GND)
• High Efficiency (up to 95%)
• Ultra-Fast Transient Response
• ±1.5% Output Voltage Accuracy Over Line/Load/Temperature Range
• Safe Start-up with Pre-Biased Output
• Typical 1.5μA Shutdown Supply Current
• Low Dropout (100% Duty Cycle) Operation
• I²C Speed, Up to 3.4MHz
• Latch-Off Thermal Shutdown Protection
• Latch-Off Current Limit Protection
• Meets CISPR32 Class B Emissions
• Power Good (PG) Open-Drain Output
• Package: 53-Lead, 6mm×10mm B1QFN