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Preliminary Specification
limited characterization. They may change without notice. Contact Fairchild Semiconductor for current information.
describes products that are not in full production at the time of printing. Specifications are based on design goals and
P
www.fairchildsemi.com
Rev. 0.8.0
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 simutaneously
¥ Adaptive Break-before-Make
¥ Integrated Power Good
¥ Drives all N-Channel MOSFETs plus NPN
¥ Latched overcurrent protection for outputs, functional
during startup too
¥ 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
Description
The RC5060 is an ACPI Switch Controller for the Camino and
Whitney 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 reg-
ulation without expensive external components. 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 Main
+5V Standby
+5V Dual (USB)
+3.3V Main
+5V Standby
+3.3V Dual (PCI)
19
18
17
6
7
8
+12V
20
-
+
-
+
REF
REF
Over Current
PWRGD
+5V Standby
PWROK
SLP S3#
12
10
5
2
1
14
16
Softstart
13
3.3V MAIN
2.5V Dual
(RAMBUS)
REF
Over Current
9
15
11
SLP S5#
REF
3.3V Main
3.3V SDRAM
Ove
r Current
Ref
-
+
4
3
Osc
-
+
-
+
-
+
-
+
RC5060
ACPI S witc h Controller