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MIC33M656

Microchip

Power Module Buck Converter

MIC33M656 6A, Power Module Buck Converter with HyperLight Load® and I2C Interface Features • Input Voltage Range: 2.4V...


MIC33M656

Microchip


Octopart Stock #: O-1526273

Findchips Stock #: 1526273-F

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Description
MIC33M656 6A, Power Module Buck Converter with HyperLight Load® and I2C Interface 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, 5 mV resolution; 0.6V-3.84V, 10/20 mV resolution - Slew rate: 0.2 ms/V-3.2 ms/V - On time (switching frequency
More View ) - High-side current limit: 3.5A-10A - Enable delay: 0.2 ms-3 ms - 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 1.5 µA Shutdown Supply Current • Low Dropout (100% Duty Cycle) Operation • I2C Speed, Up to 3.4 MHz • Latch-Off Thermal Shutdown Protection • Latch-Off Current Limit Protection • Meets CISPR32 Class B Emissions • Power Good (PG) Open-Drain Output • Package: 53-Lead, 6 mm x 10 mm B1QFN Applications • Solid-State Drives (SSD) • FPGAs, DSP and Low-Voltage ASIC Power General Description The Microchip 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 5 mV resolution, or between 0.6V and 3.84V with 10 mV and 20 mV 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 1.5 µA, while the output is discharged through a 10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, 6 mm x 10 mm x 3 mm B1QFN package, with an operating junction temperature range from -40°C to +125°C. FIGURE 1: Radiated Emissions, CISPR32, Class B (VIN = 5V, VOUT = 1V, IOUT = 6A).  2019 Microchip Technology Inc. DS20006256A-page 1 MIC33M656 Package Types MIC33M656 53-Pin B1QFN* 6 mm x 10 mm 46 AUX_AGND 45 SCL 44 SVIN 43 SVIN 42 PVIN 41 PVIN 40 PGND 39 PGND 38 OUT 37 OUT 36 OUT 35 OUT 34 OUT 33 OUT 32 OUT 31 OUT 30 OUT 29 OUT 28 OUT






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