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RC5058 数据表(PDF) 4 Page - Fairchild Semiconductor

部件名 RC5058
功能描述  High Performance Programmable Synchronous DC-DC Controller for Multi-Voltage Platforms
Download  18 Pages
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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) 4 Page - Fairchild Semiconductor

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RC5058
PRODUCT SPECIFICATION
4
REV. 1.0.0 6/30/00
Notes:
1. Steady State Voltage Regulation includes Initial Voltage Setpoint, Droop, Output Ripple and Output Temperature Drift and is
measured at the converter’s VFB sense point.
2. As measured at the converter’s VFB sense point. For motherboard applications, the PCB layout should exhibit no more than
0.5m
Ω trace resistance between the converter’s output capacitors and the CPU. Remote sensing should be used for optimal
performance.
3. Using the VFB pin for remote sensing of the converter’s output at the load, the converter will be in compliance with Intel’s VRM 8.4
specification of +50, –80mV. If Intel specifications on maximum plane resistance from the converter’s output capacitors to the CPU
are met, the specification of +40, –70mV at the capacitors will also be met.
Duty Cycle
0
100
%
5V UVLO
3.74
4
4.26
V
12V UVLO
7.65
8.5
9.35
V
Soft Start Current
5
10
17
µA
VTT Linear Regulator
Output Voltage
ILOAD ≤ 2A
1.455
1.5
1.545
V
Under Voltage Trip Level
Over Current
80
%VO
VCLK Linear Regulator
Output Voltage
ILOAD ≤ 2A
2.375
2.5
2.625
V
Under Voltage Trip Level
Over Current
80
%VO
VAGP Linear Regulator
Output Voltage
ILOAD ≤ 2A, TYPEDET=0V
1.425
1.5
1.575
V
Output Voltage
ILOAD ≤ 2A, TYPEDET=OPEN
3.135
3.3
3.465
V
Under Voltage Trip Level
Over Current
80
%VO
Common Functions
Oscillator Frequency
255
310
345
kHz
PWRGD Threshold
Logic HIGH, All Outputs
Logic LOW, Any Output
92
88
108
112
%VOUT
Linear Regulator Under Voltage
Delay Time
Over Current
30
µsec
Electrical Specifications (Continued)
(VCCA = 5V, VCCP = 12V, VOUT = 2.0V, and TA = +25°C using circuit in Figure 1 unless otherwise noted.)
The • denotes specifications which apply over the full operating temperature range.
Parameter
Conditions
Min.
Typ.
Max.
Units


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