Description

105V, 1A Low EMI Synchronous Step-Down Regulator with Fast Current Programming PassThru Features: Wide VIN Range: 4.4V to 105V (110V Abs Max) Ultralow EMI/EMC Emissions: CISPR 25 Compliant 2µA IQ When Regulating 48VIN to 3.3VOUT Fast and Accurate Output Current Programming and Monitoring with No External RSENSE Brick Wall Current Limit Low Minimum On-Time: 35ns Wide VOUT Range: 1V to VIN 100% Maximum Duty Cycle Operation Programmable Fixed Frequency: 200kHz to 2MHz Eight, Pin-Selectable Fixed (1.2V to 15V) or Adjustable Output Voltages Selectable Continuous, Pulse-Skipping, or Low Ripple Burst Mode® Operation at Light Loads PLL Synchronization to External Clock EXTVCC LDO Powers Chip from VOUT = 3.3V to 40V OPTI-LOOP® or Fixed Internal Compensation Input and Output Overvoltage Protection Thermally Enhanced (5mm × 6mm) QFN Package