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PRODUCT SPECIFICATION
RC5031
5
P
Notes:
1. When the SWCTRL pin is HIGH or left open, the switch-mode regulator output will be preset at 3.5V using internal precision
resistors. When the SWCTRL pin is LOW, the output voltage may be programmed with external resistors. Please refer to
the Applications Section for output voltage selection information.
2. Setpoint accuracy is the initial output voltage variability under the specified conditions. When SWCTRL is LOW, the matching
of the external resistors will have a major influence on this parameter.
3. Cumulative DC accuracy includes setpoint accuracy, temperature drift, line and load regulation, and output ripple.
4. The on-time pulse width of the oscillator is preset via external capacitor C
EXT
. See Typical Operating Characteristics curves.
Typical Operating Characteristics
(VCCA = 5V, and T
A
= +25
°
C using circuit in Figure 11, unless otherwise noted)
VCCP Supply Current
Internal Power Dissipation
I
SW
= 5A
I
SW
= 5A, using Figure 11
·
20
125
25
mA
mW
·
Parameter
Conditions
Min.
Typ.
Max.
Units
Figure 2. Switcher Efficiency vs. Output Current
E
Output Current (A)
100
90
80
70
0
2
4
6
Output Current (A)
Figure 3. Switcher Output Voltage vs. Load
V
O
0
2
4
6
8
Figure 5. Output Voltage vs. Temperature
(I
SW
or I
L
= 5A)
Nom.
+0.25
+0.50
-0.25
-0.50
0
25
50
75
O
Output Current, I
SW
(A)
Figure 4. Switcher Output vs Output Current
V
O
(
4
8
10
12
14
16
3
2
1
0
8
10
10
+1.0
+0.5
Nom
-0.5
-1.0
-1.5
+1.5
100
125
3.5V
2.8V
3.5V
2.8V
Figure 6. Switcher Transient Response
(0.5 to 5.5A Load Step)
I
S
V
O
(
Time (100
m
s/division)
Figure 7. Switcher Output Ripple
(BW = 20MHz, I
SW
= 5A)
V
O
Time (2
m
s/division)