RC5057M Fairchild Semiconductor, RC5057M Datasheet - Page 4

• Manufacturer Part Number: RC5057M
• Description: DC/DC Switching Controllers Syn DC-DC Controller Programmable
• Manufacturer: Fairchild Semiconductor

Specifications of RC5057M

• Number Of Outputs: 1
• Output Voltage: 1.3 V to 3.5 V
• Output Current: 18 A
• Mounting Style: SMD/SMT
• Package / Case: SOIC-16
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

RC5057
Electrical Specifications
unless otherwise noted.)
Notes:
1. Steady State Voltage Regulation includes Initial Voltage Setpoint, Droop, Output Ripple and Output Temperature Drift and is
2. As measured at the converter’s VFB sense point. For motherboard applications, the PCB layout should exhibit no more than
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
4. Includes gate current.
4
Output Voltage
Output Current
Initial Voltage Setpoint
Output Temperature Drift
Line Regulation
Internal Droop
Output Ripple
Total Output Variation,
Total Output Variation,
Short Circuit Detect Current
Efficiency
Output Driver Rise & Fall Time
Output Driver Deadtime
Oscillator Frequency
Duty Cycle
PWRGD Threshold
V
V
V
V
Soft Start Current
CCA
CCP
CCA
CCP
measured at the converter’s VFB sense point.
0.5m trace resistance between the converter’s output capacitors and the CPU. Remote sensing should be used for optimal
performance.
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.
Steady State
Transient
UVLO
UVLO
Supply Current
Supply Current
Parameter
2
3
1
4
See Table 1
I
T
V
V
20MHz BW, I
V
V
I
I
See Figure 4 for t
See Figure 7 for t
Logic HIGH
Logic LOW
LOAD
LOAD
LOAD
A
CCA
OUT
OUT
OUT
(V
= 0 to 70°C, V
CCA
= 4.75V to 5.25V, V
at I
= 2.000V
= 1.550V
= 0.8A, V
= 0.8A to I
= I
max
= 5V, V
LOAD
, V
V
V
LOAD
OUT
OUT
= 0.8A to I
OUT
V
3
OUT
CCP
Conditions
OUT
max
OUT
R
DT
= I
= 2.000V
= 1.550V
= 2.0V
and t
= 12V, V
= 2.400V
,V
V
= 1.550V
max
OUT
= 2.000V
OUT
F
max
OUT
= 1.550V
= 2.000V
OUT
= 2.000V
= 2.0V, and T
3
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
A
2.394
2.000
1.550
1.940
1.480
1.900
1.480
= +25°C using circuit in Figure 1,
Min.
3.74
7.65
255
-44
1.3
45
93
88
0
5
2.424
2.020
1.565
PRODUCT SPECIFICATION
Typ.
300
-40
8.5
+8
+6
±2
18
11
85
50
50
19
40
10
4
REV. 1.2.0 2/10/00
2.454
2.040
1.580
2.070
1.590
2.100
1.590
Max.
4.26
9.35
345
100
107
112
-36
3.5
60
17
mVpk
%V
Units
nsec
nsec
kHz
mV
mV
mV
mV
mA
mA
µA
µA
%
%
V
A
V
V
V
V
V
V
V
out