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FAN5067MX
www.fairchildsemi.com FAN5067 ACPI Dual Switch Controller Features Description • Implements ACPI control with PWROK, SLP_S3 and SLP_S5 • Switch and linear regulator controller for 3.3V or 5V Dual • Linear regulator controller and linear regulator for VADJ Dual output adjustable from 2.5V to 3.5V • Break-before-Make • Drives all N-Channel MOSFETs plus NPN • Latched overcurrent protection for outputs • Power-up softstarts for the linear regulators • UVLO guarantees correct operation for all conditions • 16 pin SOIC package The FAN5067 is an ACPI Switch Controller for Pentium IV Platforms. It is controlled by PWROK, SLP_S3 and SLP_S5, and provides 3.3V or 5V Dual and VADJ Dual output for SDRAM or DDR with 200mA minimum base current for an external NPN transistor. An on-board precision low TC reference achieves tight tolerance voltage regulation without expensive external components. The FAN5067 also offers integrated Current Limiting that protects each output, and softstart for the linear regulators. The FAN5067 is available in a 16 pin SOIC. Applications • Willamette Platform ACPI Controller • Northnwood Platform ACPI Controller Block Diagram +12V +5V Standby PWR_OK 9 10 SLP_S3 SLP_S5 3 8 7 Softstart 1 2 16 Osc +5V Main 15 Over Current Main 4 14 +5V Standby + VADJ Dual (SDRAM or DDR) 13 + - + - REF 12 REF + 5 REF 6 +3.3V or 5V Dual 11 REV. 1.0.1 5/2/02
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