MAX20021ATIA/V+

DC/DC开关稳压器, 固定, 同步, 4输出, 3V至5V输入, 3.3V/1A输出, 3.2Mhz, TQFN-28

The from Products 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 1ACH1, CH4, 0.5ACH2, 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