MIC33M656 6A, Power Module Buck Converter 2 with HyperLight Load and I C Interface 2 The I C interface allows programming the output Features voltage, between 0.6V and 1.28V with 5 mV resolution, Input Voltage Range: 2.4V to 5.5V or between 0.6V and 3.84V with 10 mV and 20 mV 6A Output Current resolution. Three different default voltage options 2 (0.6V, 0.9V and 1.0V) are provided so that the applica- Multiple Faults Indication through I C 2 tion can be started with a safe voltage level and then I C Programmable: 2 moved to high-performance modes under I C control. - Output voltage: 0.6V-1.28V, 5 mV resolution An open-drain Power Good output facilitates output 0.6V-3.84V, 10/20 mV resolution voltage monitoring and sequencing. If set in shutdown - Slew rate: 0.2 ms/V-3.2 ms/V (EN = GND), the MIC33M656 typically draws 1.5 A, - On time (switching frequency) while the output is discharged through a 10 pull-down - High-side current limit: 3.5A-10A (if the output discharge feature is enabled). - Enable delay: 0.2 ms-3 ms The MIC33M656 pinout is compatible with the - Output discharge when disabled (EN = GND) MIC33M650, so that applications can be easily High Efficiency (up to 95%) converted. Ultra-Fast Transient Response The 2.4V to 5.5V input voltage range, low shutdown and 1.5% Output Voltage Accuracy Over quiescent currents make the MIC33M656 ideal for Line/Load/Temperature Range single-cell Li-ion battery-powered applications. The 100% Safe Start-up with Pre-Biased Output duty cycle capability provides low dropout operation, extending operating range in portable systems. Typical 1.5 A Shutdown Supply Current Low Dropout (100% Duty Cycle) Operation The MIC33M656 is available in a thermally efficient, 2 53-Lead, 6 mm x 10 mm x 3 mm B1QFN package, with I C Speed, Up to 3.4 MHz an operating junction temperature range from -40C to Latch-Off Thermal Shutdown Protection +125C. 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 2 The Microchip MIC33M656 is an I C programmable, high-efficiency, low-voltage input, 6A current, synchro- nous step-down regulator power module with FIGURE 1: Radiated Emissions, integrated inductor. The Constant-On-Time (COT) con- CISPR32, Class B (V = 5V, V = 1V, IN OUT trol architecture with HyperLight Load mode provides I = 6A). OUT very high efficiency at light loads, while still having ultra-fast transient response. 2019 Microchip Technology Inc. DS20006256A-page 1MIC33M656 Package Types MIC33M656 53-Pin B1QFN* 6mm x10mm AUX A 47 27 GND OUT EP OUT 48 26 SDA OUT 49 25 EN OUT 50 24 PG P GND EP P GND V 51 23 P OUT GND A 52 22 SW GND 21 SW EP SW AUX PV 53 20 SW IN EP PGND * Includes Exposed Thermal Pads (EP) see Table 3-1. Typical Application MIC33M656 SV SW IN V OUT OUT 1.0V/6A V IN PV IN 2.4V to 5.5V 10 F 47 F 47 F AUX PV Opt. IN P GND EN EN V IN V V IN IN AUX A GND A GND 100k 2.4 k 2.4 k V OUT SDA SDA PG Power Good SCL SCL Ordering Information Default Status at Power-up Output Voltage High-Side Output Part Number Output TON 1:0 Soft Start Overtemp Range/Step Current Limit Pull-Down When Voltage (ns) Speed Latch-Off (typical) Disabled MIC33M656-HAYMP 1.0V 10A 10 130 ns 800 s/V Latch-Off after Yes 0.600V-1.280V/5 mV 4 OT Cycles MIC33M656-FAYMP 0.9V 10A 10 130 ns 800 s/V Latch-Off after Yes 0.600V-1.280V/5 mV 4 OT Cycles MIC33M656-SAYMP 1.0 V 10A 10 130 ns 800 s/V Latch-Off after Yes 0.600V-1.280V/10 mV 4 OT Cycles 1.280V-3.840V/20 mV DS20006256A-page 2 2019 Microchip Technology Inc. AUX PV 1 46 AUX A IN GND P 2 45 SCL GND P 3 44 SV GND IN SV P 4 43 GND IN P 5 42 PV GND IN EP PV IN 6 41 PV SW IN 7 40 P SW GND EP P GND 8 39 P SW GND SW 9 38 OUT SW 10 37 OUT 11 SW 36 OUT 35 SW 12 OUT 13 34 SW OUT 14 33 SW OUT SW 15 32 OUT 16 31 OUT SW SW 17 30 OUT SW 18 29 OUT 19 28 OUT SW