RC5060 Datasheet | Fairchild Semiconductor

Features - Implements ACPI control with PWROK, SLP_S3# and SLP_S5# - Switch and linear regulator controller for 3.3V Dual (PCI) - Linear regulator controller and linear regulator for 2.5V Dual (RAMBUS) - Two switch controller for 5V Dual (USB) - Switch controller and linear regulator for 3.3V SDRAM - Provides SDRAM and RAMBUS power simultaneously - Adaptive Break-before-Make - Integrated Power Good - 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 - 20 pin SOIC package Applications - Camino Platform ACPI Controller - Whitney Platform ACPI Controller - Tehama Platform ACPI Controller Description The RC5060 is an ACPI Switch Controller for the Camino, Whitney and Tehama Platforms. It is controlled by PWROK, SLP_S3# and SLP_S5#, and provides 3.3V Dual for PCI, 3.3V for SDRAM, 2.5V Dual for RAMBUS, and 5V Dual voltages. An on-board precision low TC reference achieves tight tolerance voltage regulation without expensive external ponents. The RC5060 also offers integrated Power Good and Current Limiting that protects each output, and softstart for the linear regulators. The RC5060 is available in a 20 pin SOIC. Block Diagram +5V Standby PWROK 3.3V Main 3 +5V Main 4 3.3V SDRAM 13 9 PWRGD Over Current +3.3V Main 3.3V MAIN 16 Over Current + REF + 14 + + REF 7 8 +3.3V Dual (PCI) 6 +5V Standby Softstart + + Over Current Ref + 19 Osc 18 17 REF +5V Dual (USB) +5V Standby 12 SLP_S3# 10 SLP_S5# 11 5 1 2 20 +12V 15 2.5V Dual (RAMBUS) REV. 1.0.2 9/14/01 PRODUCT SPECIFICATION Pin Assignments QCAP PUMP SDRAMOUT SDRAMFB 5VSTBY 3VOUT1 3VOUT2 3VFB PWRGD SLP_S3# 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 VCCP 5VOUT1 5VOUT2 5VFB RAMBUSOUT RAMBUSFB GND SS PWROK SLP_S5# Pin Definitions Pin Number 1 2 3 4 Pin Name QCAP PUMP SDRAMOUT SDRAMFB Pin Function Description Charge pump cap. Attach flying capacitor between this...