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MIC33M350 Datasheet(PDF) 1 Page - Microchip Technology |
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MIC33M350 Datasheet(HTML) 1 Page - Microchip Technology |
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1 / 32 page  2020-2021 Microchip Technology Inc. DS20006348B-page 1 MIC33M350 Features • 2.4V to 5.5V Input Voltage Range • 3A Output Current • Pin Strapping Voltage Selection: - Three-state pins (nine voltage combinations) - 0.6V, 0.8V, 0.9V, 1.0V, 1.2V, 1.5V, 1.8V, 2.5V or 3.3V output voltage • Passes Automotive AEC-Q104 Reliability Testing • Reduced Component Count (no feedback resistors) • High Efficiency (up to 95%) • Output Discharge when Disabled • Constant On-Time Control with High Switching Frequency: - 1.2 MHz typical at 1.0V output voltage • ±1.5% Output Voltage Accuracy Over Line/Load/Temperature Range • 0.8 ms/V Soft Start Speed • Supports Safe Start-up with Pre-Biased Output • Typical 1.5 µA Shutdown Supply Current • Low Dropout Operation (100% duty cycle) • Ultra Fast Transient Response • Latch-Off Thermal Shutdown Protection • Latch-Off Current Limit Protection • Power Good (PG) Open-Drain Output • Meets CISPR32 Class B Radiated EMI • Meets CISPR 25 Class 5 Radiated EMI • Package: 3.0 mm × 4.5 mm × 1.8 mm, 24-Lead QFN Applications • Solid State Drives (SSD) • Tablets, Netbooks and Ultrabooks • FPGAs, DSP and Low-Voltage ASIC Power General Description The MIC33M350 device is a pin-selectable output voltage, high-efficiency, low-voltage input, 3A current, synchronous step-down regulator power module with integrated inductor. The Constant On-Time (COT) control architecture with HyperLight Load provides very high efficiency at light loads, while maintaining an ultra-fast transient response. The MIC33M350 output voltage is set by two VSEL (Voltage Selection) pins, between nine different values. This method eliminates the need for an external feedback resistor divider and improves the output voltage setting accuracy. The 2.4V to 5.5V input voltage range, low shutdown and quiescent currents make the MIC33M350 device 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 MIC33M350 pinout is compatible with the MIC33M356 I2C-based programmable regulator version, such that applications can be easily converted. An open-drain Power Good output is provided to indicate when the output voltage is within 9% of regulation and facilitates the interface with an MCU. If set in shutdown (EN = GND), the MIC33M350 typically draws 1.5 µA, while the output is discharged through 10 pull-down. MIC33M350 is available in a thermally efficient package: 24-Lead 3.0 mm x 4.5 mm x 1.8 mm QFN package, with an operating junction temperature range from -40°C to +125°C. MIC33M350 passes Automotive AEC-Q104 Reliability Testing. FIGURE 1: Radiated Emissions, CISPR32, Class B (VIN = 5V, VOUT = 1V, IOUT =3A). Vertical Polarization Horizontal Polarization 3A, Pin Strapping Power Module with HyperLight Load® Mode and Output Voltage Select |
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