www.fairchildsemi.com
FAN5067
ACPI Dual Switch Controller
Features
• Implements ACPI control with PWROK, SLP_S3 and SL...
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...