Monolithic 2Amp DC-DC Step-Down Regulator

The EL7562 is an integrated, synchronous step-down regulator with output voltage adjustable from 1.0V to 3.8V. It is capable of delivering 2A continuous current at up to 95 efficiency. The EL7562 operates at a constant frequency pulse width modulation (PWM) mode, making external synchronization possible. Patented on-chip resistorless current sensing enables current mode control, which provides cycle-by-cycle current limiting, over-current protection, and excellent step load response. The EL7562 is available in a fused-lead 16 Ld QSOP package. With proper external components, the whole converter fits into a less than 0.5 in2 area. The minimal external components and small size make this EL7562 ideal for desktop and portable applications.

特性 Features

? Integrated synchronous MOSFETs and current mode controller

? 2A continuous output current

? Up to 95 efficiency

? 3.3V or 5V nominal input voltage

? Adjustable output from 1V to 3.8V

? Cycle-by-cycle current limit

? Precision reference

? ±0.5 load and line regulation

? Adjustable switching frequency to 1MHz

? Oscillator synchronization possible

? Internal soft-start

? Over-temperature protection

? Under-voltage lockout

? 16 Ld QSOP package

? Pb-free plus anneal available (RoHS compliant)

Applications

? DSP, CPU core and IO supplies

? Logic/Bus supplies

? Portable equipment

? DC-DC converter modules

? GTL + Bus power supply