6225CA Datasheet (Intersil Corporation)

6225CA, ISL6225CA

GND (Pin 1) Signal ground for the IC.

LGATE1, LGATE2 (Pin 2, 27) These are outputs of the lower MOSFET drivers.

PGND1, PGND2 (Pin 3, 26) These pins provide the return connection for lower gate drivers.

These pins are connected to sources of the lower MOSFETs of their respective converters.

DDR (P

www.DataSheet4U.com ® ISL6225 Data Sheet September 2003 FN9049.4 Dual Mobile-Friendly PWM Controller with DDR Memory Option The ISL6225 dual PWM controller delivers high efficiency and tight regulation from two voltage regulating synchronous buck DC/DC converters.

The ISL6225 PWM power supply controller was designed especially for DDR DRAM, SDRAM, and graphic chipset applications in high performance desknote PCs, notebook PCs, sub-notebook PCs, and PDAs.

Automatic mode selection of constant-f

6225CA Features

* Provides regulated output voltage in the range of 0.9V-5.5V - High efficiency over wide load range - Synchronous buck converter with hysteretic operation at light load - Inhibit Hysteretic mode on one, or both channels

* Complete DDR memory power solution - VTT tracks VDDQ/2 - VDDQ