LTC3370EUH#PBF

LTC3370 is a highly flexible multioutput power supply IC. This device includes four synchronous buck converters, configured to share eight 1A power stages, each of which is powered from independent 2.25V to 5.5V inputs. The DC/DCs are assigned to one of eight power configurations via pin programmable C1-C3 pins. The common buck switching frequency may be programmed with an external resistor, synchronized to an external oscillator, or set to a default internal 2MHz clock. The operating mode for all DC/DCs may be programmed via the PLL/MODE pin for Burst Mode or forced continuous mode operation. A PGOODALL output indicates when all enabled DC/DCs are within a specified percentage of their final output value. To reduce input noise, the buck converters are phased in 90° steps. Precision enable pin thresholds facilitate reliable power-up sequencing. It is used in application such as general purpose multichannel power supplies: automotive, industrial, distributed power systems etc.

• VCC input supply current is 2.5µA maximum at (all switching regulators in shutdown)
• 8 unique output configurations (1A to 4A per channel)
• Precision enable pin thresholds for autonomous sequencing
• Temp monitor indicates die temperature
• Synchronization frequency is 1MHz to 3MHz
• Overtemperature shutdown is 170°C typical
• PMOS current limit (1A buck regulators) is 2.3A typical
• Soft-start time (1A buck regulator) is 1A typical
• Operating junction temperature is -40°C to 125°C
• Package style is 32-lead plastic QFN

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