LTC3374 Power Output Side Key Features

• Flexible output current paralleling, single channel rated 1A, supports master-slave configuration, multiple channels share a single inductor for paralleling, maximum single output 4A.

• 8 channels can be allocated as needed for 1A, 2A, 3A, or 4A output without changing the power IC.

• Output voltage range 0.8V to VIN, adjustable; internal feedback reference 0.8V, external resistor divider sets any output value.

• 8 buck regulators switch with 90° phase-shifted interleaving, reducing output ripple and input noise, delivering cleaner output power quality.

• Operating mode programmable via MODE pin: Burst Mode (high efficiency at light load, slightly higher ripple); pulse-skipping or forced continuous mode (fixed frequency, low and predictable ripple, suitable for noise-sensitive analog circuits).

• Power-up sequencing independently controlled; each channel’s EN pin allows external resistor divider to set precise startup voltage threshold, enabling independent control of power-up and power-down sequencing.

• Global output status monitoring: PGOOD_ALL open-drain pin is pulled high (requires external pull-up resistor) when all 8 channels are stable within regulation range, providing a global power-good signal.

• Each buck regulator has its own VIN input pin (VIN1~VIN8), allowing each output rail to come from a different input source (2.25V~5.5V), enhancing supply architecture flexibility and isolation.

• For specific output channel requirements (e.g., 4A parallel configuration) or feedback resistor calculation, further details can be provided.