RC5041
PRODUCT SPECIFICATION
Electrical Specifications
(continued)
(V
CCA
= 5V, V
OUT
= 2.8V, f
osc
= 300 KHz, and T
A
= +25
°
C using circuit in Figure 1, unless otherwise noted)
The
•
denotes specifications which apply over the full operating temperature range.
Parameter
Output Voltage Regulation
Steady State
1
Transient
2
Efficiency
Output Driver Rise and Fall Time
Turn-on Response Time
Oscillator Range
Oscillator Frequency
Maximum Duty Cycle
Conditions
V
OUT
= 2.8V, I
LOAD
= 0 to 10A
I
LOAD
= 0.8 to 9.5A, 30A/
µ
S
I
LOAD
= 10A, V
OUT
= 2.8V
See Figure 2
I
LOAD
= 0A to 10A
80
C
EXT
= 100 pF
90
300
300
95
•
•
•
Min.
2.74
2.70
80
Typ.
2.80
2.80
85
50
10
1000
Max.
2.90
2.90
Units
V
V
%
ns
ms
KHz
KHz
%
Preliminary Information
Notes:
1. Steady State Voltage Regulation includes Initial Voltage Setpoint, DC load regulation, outut ripple/noise and temperature drift.
2. These specifications assume a minimum of 20, 1
µ
F ceramic capacitors are placed directly next to the CPU in order to provide
adequate high-speed decoupling. For motherboard applications, the PCB layout must exhibit no more than 0.5m parasitic
Ω
resistance and 1nH parasitic inductance between the converter output and the CPU.
Test Circuits
L2
VCC
2.5µH
C4
0.1µF
CIN
DS2
C8
0.1µF
+12V
C12
1µF
9
10
11
VREF
C7
GND
0.1µF
12
13
14
15
16
U1
RC5041
8
7
6
5
4
3
2
1
CEXT
100pF
C6
1.0µF
M1
L1
1.0µH
RSENSE
VO
6mΩ
COUT
DS1
VID3
VID2
VID1
VID0
R1
R2
R3
R4
10K
10K
10K
10K
VCC
C11
0.1µF
R6
10KΩ
VCC
PWRGD
65-5041-03
Figure 1. Standard Test or Application Schematic
4
RAYTHEON [ RAYTHEON COMPANY ]
