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RC5058 数据表(PDF) 1 Page - Fairchild Semiconductor

部件名 RC5058
功能描述  High Performance Programmable Synchronous DC-DC Controller for Multi-Voltage Platforms
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制造商  FAIRCHILD [Fairchild Semiconductor]
网页  http://www.fairchildsemi.com
标志 FAIRCHILD - Fairchild Semiconductor

RC5058 数据表(HTML) 1 Page - Fairchild Semiconductor

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Pentium is a registered trademark of Intel Corporation. Programmable Active Droop is a trademark of Fairchild Semiconductor.
Rev. 1.0.0
Features
•P
rogrammable output for Vcore from 1.3V to 3.5V using
an integrated 5-bit DAC
• Controls adjustable linears for Vagp (selectable 1.5V/3.3V),
Vclock (2.5V), and Vtt (1.5V) or Vnorthbridge (1.8V)
• Meets VRM specification with as few as 5 capacitors
• Meets 1.550V +40/-70mV over initial tolerance,
temperature and transients
• Remote sense
• Programmable Active Droop™ (Voltage Positioning)
• Drives N-Channel MOSFETs
• Overcurrent protection using MOSFET sensing
• 85% efficiency typical at full load
• Integrated Power Good and Enable/Soft Start functions
• 24 pin SOIC package
Applications
• Power supply for Pentium® III Camino Platform
• Power supply for Pentium III Whitney Platform
• VRM for Pentium III processor
• Programmable multi-output power supply
Description
The RC5058 is a synchronous mode DC-DC controller IC
which provides a highly accurate, programmable set of output
voltages for multi-voltage platforms such as the Intel Camino,
and provides a complete solution for the Intel Whitney and other
high-performance processors. The RC5058 features remote
voltage sensing, independently adjustable current limit, and a
proprietary Programmable Active Droopfor optimal converter
transient response. The RC5058 uses a 5-bit D/A converter
to program the output voltage from 1.3V to 3.5V. The RC5058
uses a high level of integration to deliver load currents in excess
Block Diagram
VID3
VID2
VID1
16
VID0
GNDP
23
22
2
18
24
1
17
-
+
-
+
OSC
1.24V
Reference
Digital
Control
Power
Good
5-Bit
DAC
VID4
87 6 5 4
+5V
+12V
PWRGD
-
+
ENABLE/SS
VCC
GNDA
3
LODRV
HIDRV
VCCP
21
VCCA
+5V
20
-
REF
REF
PWRGD,
OCL
PWRGD,
OCL
+3.3V
+1.5V
10
9
+2.5V
12
11
19
OCL
-
+
VCCP
PWRGD, OCL
V
3.3/1.5V
15
14
13
RD
RS
-
+
+
-
+
-
+
RC5058
High Performance Programmable Synchronous
DC-DC Controller for Multi-Voltage Platforms


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