SC415: Dual Synchronous Buck Controller

The SC415 is a versatile, constant on-time, pseudo fixed frequency, dual synchronous buck PWM controller intended for notebook computers and other battery operated portable devices. The SC415 contains all the features needed to provide cost-effective control of two independent switchmode power supplies.

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Features

VIN Range 3-25V
Outputs Adjustable from 0.75 to 5.25V, or Preset Output Voltages:
- VOUT1 = 1.8 or 1.5V
- VOUT2 = 1.25 or 1.05V
Low Shutdown Power
Constant On-Time for Fast Dynamic Response
Adjustable Switching Frequency
Separated Frequencies for Minimal Switching Interaction:
- VOUT1 = up to 600kHz
- VOUT2 = up to 720kHz
Power Save or Continuous Operation at Light Load
Adjustable Soft-start Rates for Each Output
Soft-Shutdown for Each Output
Over-Voltage and Under-Voltage Fault Protection
Cycle-by-Cycle Valley Current Limit
DC Current Sense Using Low-Side RDSON Sensing, or RSENSE in Source of Low-Side MOSFET for Greater Accuracy
Separate Power Good Outputs
Separate Enable/Power Save Inputs
3.1A Non-Overlapping Gate Drive
SmartDriveTM for High-Side MOSFET
MLP 4x4 24 Pin Package
Industrial Temperature Range