RC5058(1999) Ver la hoja de datos (PDF) - Fairchild Semiconductor
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RC5058
(Rev.:1999)
(Rev.:1999)
Fairchild Semiconductor
RC5058 Datasheet PDF : 19 Pages
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RC5058
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
5V UVLO
12V UVLO
Soft Start Current
VTT Linear Regulator
Output Voltage
Under Voltage Trip Level
ILOAD ≤ 2A
Over Current
VCLK Linear Regulator
Output Voltage
Under Voltage Trip Level
ILOAD ≤ 2A
Over Current
VAGP Linear Regulator
Output Voltage
Output Voltage
Under Voltage Trip Level
ILOAD ≤ 2A, TYPEDET=0V
ILOAD ≤ 2A, TYPEDET=OPEN
Over Current
Common Functions
Oscillator Frequency
PWRGD Threshold
Logic HIGH, All Outputs
Logic LOW, Any Output
Linear Regulator Under Voltage Over Current
Delay Time
Min.
• 3.74
• 7.65
•5
Typ.
4
8.5
10
Max.
4.26
9.35
17
Units
V
V
µA
• 1.425 1.5 1.575
V
80
%VO
• 2.375 2.5 2.625
V
80
%VO
• 1.425 1.5 1.575
V
• 3.135 3.3 3.465
V
80
%VO
• 255 310 345 kHz
• 93
• 88
107 %VOUT
112
30
µsec
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
0.5mΩ 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.
4
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