ISL6227 is a dual PWM controller from ISL company, which adopts synchronous buck DC/DC converter and can provide power regulation for DDR memory, chipset, graphics and other system electronics. It supports AC/DC adaptor or Li-ion battery pack and automatically switches mode under heavy load and light load to ensure high efficiency under various conditions.
The ISL6227 is a dual PWM controller designed to provide high-efficiency precision voltage regulation from two synchronous buck converters. It is specifically engineered for power regulation in DDR memory, chipsets, graphics, and other system electronics within Notebook PCs.
Key features include automatic mode transition between constant-frequency synchronous rectification at heavy loads and hysteretic diode-emulation at light loads to ensure high efficiency across a wide range of conditions. The device supports input voltage ranges from 5V to 24V or 3.3V/5V system rails, allowing direct conversion from AC/DC adapters or Li-ion battery packs.
| Output Voltage Range | 0.9V to 5.5V |
|---|---|
| Input Battery Voltage Range | 5V to 24V |
| PWM Oscillator Frequency (Typical) | 300 kHz |
| Internal Reference Voltage Accuracy | -1.0% to +1.0% |
The device provides regulated output voltages in the range of 0.9V to 5.5V.
Yes, its wide input voltage range allows for voltage conversion directly from AC/DC adapters or Li-ion battery packs.
Yes, it offers a complete DDR1 and DDR2 memory power solution with VTT tracking VDDQ/2.