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RC5060 Datasheet

  • RC5060

  • ACPI Switch Controller

  • 15頁

  • FAIRCHILD

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www.fairchildsemi.com
RC5060
ACPI Switch Controller
Features
樓 Implements ACPI control with PWROK, SLP_S3# and
SLP_S5
#
樓 Switch and linear regulator controller for 3.3V Dual (PCI)
樓 Linear regulator controller and linear regulator for 2.5V
Dual (RAMBUS)
樓 Two switch controller for 5V Dual (USB)
樓 Switch controller and linear regulator for 3.3V SDRAM
樓 Provides SDRAM and RAMBUS power simultaneously
樓 Adaptive Break-before-Make
樓 Integrated Power Good
樓 Drives all N-Channel MOSFETs plus NPN
樓 Latched overcurrent protection for outputs
樓 Power-up softstarts for the linear regulators
樓 UVLO guarantees correct operation for all conditions
樓 20 pin SOIC package
Applications
樓 Camino Platform ACPI Controller
樓 Whitney Platform ACPI Controller
樓 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 toler-
ance voltage regulation 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 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)
REF
REV. 1.0.2 9/14/01

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