资 源 简 介
The ISL62871 and ISL62872 IC’s are Single-PhaseSynchronous-Buck PWM voltage regulators featuringIntersil’s Robust Ripple Regulator (R3) Technology™. Thewide 3.3V to 25V input voltage range is ideal for systemsthat run on battery or AC-adapter power sources. TheISL62871 and ISL62872 are low-cost soluTIons forapplicaTIons requiring dynamically selected slew-ratecontrolled output voltages. The soft-start and dynamicsetpoint slew-rates are capacitor programmed. VoltageidenTIficaTIon logic-inputs select two (ISL62871) or four(ISL62872) resistor-programmed setpoint reference voltagesthat directly set the output voltage of the converter between0.5V to 1.5V, and up to 3.3V using a feedback voltagedivider. Optionally, an external reference such as the DACoutput from a microcontroller, can be used by either IC toprogram the setpoint reference voltage, and still maintain thecontrolled slew-rate features. Robust integrated MOSFETdrivers and Schottky bootstrap diode reduce theimplementation area and lower component cost.
