RC5052 View Datasheet(PDF) - Fairchild Semiconductor
Part Name
Description
Manufacturer
RC5052
Fairchild Semiconductor
RC5052 Datasheet PDF : 18 Pages
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RC5052
PRODUCT SPECIFICATION
Electrical Specifications (VCCA = 5V, VCCP = VCCQP = 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
Output Voltage
See Table 1
• 1.3
3.5
V
Output Current
18
A
Initial Voltage Setpoint
Output Temperature Drift
Line Regulation
Internal Droop3
Output Ripple
Total Output Variation,
Steady State1
Total Output Variation,
Transient2
Short Circuit Detect Current
ILOAD = 0.8A, VOUT = 2.400V
VOUT = 2.000V
VOUT = 1.550V
TA = 0 to 70°C, VOUT = 2.000V
VOUT = 1.550V
VCCA = 4.75V to 5.25V, VOUT = 2.000V
VOUT at ILOAD = 0.8A to Imax
20MHz BW, ILOAD = Imax
VOUT = 2.000V
VOUT = 1.550V3
ILOAD = 0.8A to Imax,VOUT = 2.000V
VOUT = 1.550V3
2.397 2.424 2.454 V
2.000 2.020 2.040 V
1.550 1.565 1.580 V
•
+8
mV
•
+6
mV
•
±2
mV
-44 -40 -36 mV
11
mVpk
• 1.940
• 1.480
2.070 V
1.590
• 1.900
• 1.480
2.100 V
1.590
• 45
60
µA
Efficiency
Output Driver Rise & Fall Time
Output Driver Deadtime
Oscillator Frequency
Oscillator Range
ILOAD = Imax, VOUT = 2.0V
See Figure 5 for tR and tF
RDTA = OPEN. See Figure 3 for tDT
ROSC = OPEN
• 255
80
85
%
50
nsec
50
nsec
300 345 kHz
1000 MHz
Duty Cycle
0
100 %
Dead Time Range
50
120 nsec
PWRGD Threshold
Logic HIGH
Logic LOW
• 93
• 88
107 %Vout
112
VCCA UVLO
VCCP UVLO
VCCA Supply Current
VCCP Supply Current4
Soft Start Current
• 3.74 4 4.26 V
• 7.65 8.5 9.35 V
19
mA
40
mA
•5
10
17
µA
OVP Ouput High Current
V = 1.5V
37.5
mA
OVP Trigger Threshold
115 120 125 %Vout
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 capac-
itors to the CPU are met, the specification of +40, -70mV at the capacitors will also be met.
4. Includes gate current.
4
REV. 1.3.2 8/27/01
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