Dual Mobile-Friendly PWM Controller with DDR Option

The ISL6227 dual PWM controller delivers high efficiency precision voltage regulation from two synchronous buck DC/DC converters. It was designed especially to provide power regulation for DDR memory, chipsets, graphics and other system electronics in Notebook PCs. The ISL6227’s wide input voltage range capability allows for voltage conversion directly from AC/DC adaptor or Li-Ion battery pack.

Features

• Provides Regulated Output Voltage in the Range 0.9V to 5.5V

• Operates From an Input Battery Voltage Range of 5V to 28V or From 3.3V/5V System Rail

• Complete DDR1 and DDR2 Memory Power Solution with VTT Tracking VDDQ/2 and a VDDQ/2 Buffered Reference Output

• Flexible PWM or HYS Plus PWM Mode Selection with HYS Diode Emulation at Light Loads for Higher System Efficiency

• rDS(ON) Current Sensing

• Excellent Dynamic Response With Voltage Feed-Forward and Current Mode Control Accommodating Wide Range LC Filter Selections

• Undervoltage Lock-Out on VCC Pin

• Power-Good, Overcurrent, Overvoltage, Undervoltage Protection for Both Channels

• Synchronized 300kHz PWM Operation in PWM Mode

• Pb-Free Available (RoHS compliant)

Applications

• Notebook PCs and Desknotes

• Tablet PCs/Slates

• Hand-Held Portable Instruments

ISL6227IA属于集成电路（IC） > 特殊用途稳压器。瑞萨科技有限公司制造生产的ISL6227IA特殊用途稳压器该系列产品用于电源控制、某种形式的转换，适用于特定的复杂应用。因此，各种产品特性集差异较大，包括空燃比传感器接口、汽车交流发电机电压调节、DDR 端接、液体透镜控制、摩托车转向信号控制、热电 (peltier) 冷却器控制、压电触觉控制、阀门控制、小型发动机管理等。