FAN5067

www.fairchildsemi.com FAN5067 ACPI Dual Switch Controller Features 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 Description 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 +5V Standby PWR_OK 9 SLP_S3 7 SLP_S5 8 3 1 2 16 +12V 10 Softstart Osc +5V Main 15 Over Current Main 4 14 + VADJ Dual (SDRAM or DDR) 13 + REF + 11 + REF 5 6 +5V Standby 12 REF +3.3V or 5V Dual REV. 1.0.1 5/2/02 FAN5067 PRODUCT SPECIFICATION Pin Assignments QCAP PUMP 5VSTBY DUALOUT1 DUALOUT2 DUALVFB SLP_S3 SLP_S5 1 2 3 4 5 6 7...