Intersil ISL85033双路3A（单路6A）降压电源解决方案

Intersil 公司的ISL85033是双路3A/单路6A的降压电源稳压器，输入电压从4.5V到28V，采用峰值电流模式控制，开关频率从300kHz到2MHz，保护特性包括过流，UVLO和热过载保护，主要用在通用POL DC/DC转换，STB，FPGA电源，DVD和HDD驱动器，LCD屏，TV电源和线缆调制解调器。本文介绍了ISL85033主要特性，功能方框图，双路3A输出电路图和单路6A输出电路图，ISL8033EVAL2Z评估板主要特性，电路图，材料清单和PCB元件布局图。

The ISL85033 is a dual standard buck regulator capable of 3A per channel continuous output current. With an input range of 4.5V to 28V, it provides a high frequency power solution for a variety of point of load applications.

The PWM controller in the ISL85033 drives an internal switching N-Channel power MOSFET and requires an external Schottky diode to generate the output voltage. The integrated power switch is optimized for excellent thermal performance up to 3A of output current. The PWM regulator switches at a default frequency of 500kHz and it can be user programmed or synchronized from 300kHz to 2MHz. The ISL85033 utilizes peak current mode control to provide flexibility in component selection and minimize solution size. The protection features include overcurrent, UVLO and thermal overload protection.

The ISL85033 is available in a small 4mmx4mm Thin Quad Flat Pb-free (TQFN) package.

ISL85033主要特性：
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