SC416 Datasheet | SEMTECH

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 - Proportional or Coincident Tracked Start-up and Shutdown of Both Outputs .. - Adjustable Soft-start Rates for Each Output - Regulated Shutdown for Each Output - Low Shutdown Power - Constant On-Time for Fast Dynamic Response - Adjustable Switching Frequency - Separated Frequencies for Minimal Switching Interaction: VOUT1 = up to 600k Hz VOUT2 = up to 720k Hz - Power Save or Continuous Operation at Light Load - 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 - Smart Drive TM for High-side MOSFET - MLP 4x4 24 Pin Lead-free Package - Industrial Temperature Range - WEEE and Ro HS pliant - - Dual Synchronous Buck Controller with Tracking Start-up/Shutdown Description The SC416 is a versatile, constant on-time, pseudofixed-frequency, dual synchronous buck PWM controller intended for notebook puters and other battery operated portable devices. The SC416 contains all the Features needed to provide cost-effective control of two independent switchmode power supplies. The SC416 provides adjustable voltage tracking during start-up and shut-down, making it an effective solution for a variety of applications where the voltage differential between supply rails must meet defined limits during all operating conditions including start-up and shutdown. The SC416 supports proportional tracking which gives equal start-up and shut-down times for both outputs, and can also provide coincident tracking where the two output voltages are equal during the lower voltage’s start-up and shut-down ramp. The two DC outputs are adjustable from 0.75V to 5.25V. Additional Features for each output include cycle-bycycle current...