4
Rev. 0
Figure 2. Efficiency vs Load Current at 2MHz Switching Frequency (Input from V
IN
Terminal)
TYPICAL PERFORMANCE CHARACTERISTICS
V
IN
= 24V
V
IN
= 12V
I
OUT
(A)
0
0.5
1
1.5
2
2.5
3
60
65
70
75
80
85
90
95
EFFICIENCY (%)
DC2688A F02
f
SW
= 2MHz
PULSE SKIPPING MODE
L = XFL5030-222
R
SENSE
= 8mΩ
PERFORMANCE SUMMARY
Specifications are at T
A
= 25°C
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
IN
Input Supply Range
6.0
42
V
V
BUS
USB 5V Bus Voltage
Without Cable Drop Compensation
4.8
5
5.2
V
USB 5V Bus Voltage
With Cable Drop Compensation
6.2
V
I
BUS
Maximum Output Current
R
SENSE
= 10mΩ
2.4
A
Maximum Output Current
R
SENSE
= 8mΩ
3.0
A
f
SW
Switching Frequency
1.95
2
2.05
MHz
EFE
Efficiency at DC
V
IN
= 12V, I
BUS1
= 1.5A
92.7
%
