MAX20021ATIA/V+

The MAX20021ATIA/V+ is an Automotive quad, low-voltage step-down DC to DC converter in 28 pin TQFN-EP package. This power-management IC (PMIC) integrates four low-voltage, high-efficiency, step-down DC to DC converters. It offers four factory-preset output voltages to achieve ±3% output-voltage accuracy without using expensive 0.1% resistors and can deliver up to 1A of current. It features fixed-frequency PWM-mode operation with a switching frequency of 3.2MHz. The low-resistance on-chip switches ensure high efficiency at heavy loads while minimizing critical inductances, making the layout a much simpler task with respect to discrete solutions. Two of four buck converters operate 180° out-of-phase with the internal clock. This feature reduces the necessary input capacitance and improves EMI as well. All four buck converters operate in constant-PWM mode outside the AM band. It offers a SYNC input to synchronize to an external clock.

• Operates from 3V to 5.5V makes it ideal for automotive point-of-load and post regulation application
• Current configuration is 1A(CH1, CH4), 0.5A(CH2, CH3)
• Output voltage is 3.3V, 1.25V, 2.65/1.80V, 1.8V respectively
• Active time out period is 20,480cycles
• Individual enable inputs and power-good outputs to simplify sequencing
• I/P overvoltage protection, undervoltage monitoring, undervoltage lockout, overtemperature shutdown
• Cycle-by-cycle current limiting
• Soft-start and supply sequencing reduces inrush current
• Internal current sensing and loop compensation reduce board space and system cost
• Operating temperature range from -40°C to +125°C

Applications

Automotive, Power Management, Industrial

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party