Datasheet

__________________________________________Typical Operating Characteristics
(Circuit of Figure 1, SKIP = GND, T
A
= +25°C, unless otherwise noted.)
100
50
0.001 0.1 10.01 10
EFFICIENCY vs.
LOAD CURRENT (3.3V/1A CIRCUIT)
60
MAX1652 toc01
LOAD CURRENT (A)
EFFICIENCY (%)
70
80
90
V+ = 6V
MAX1653
f = 300kHz
V+ = 28V
V+ = 12V
100
50
0.001 0.1 10.01 10
EFFICIENCY vs.
LOAD CURRENT (3.3V/2A CIRCUIT)
60
MAX1652 toc02
LOAD CURRENT (A)
EFFICIENCY (%)
70
80
90
V+ = 6V
V+ = 28V
V+ = 12V
MAX1653
f = 300kHz
100
50
0.001 0.1 10.01 10
EFFICIENCY vs.
LOAD CURRENT (3.3V/3A CIRCUIT)
60
MAX1652 toc03
LOAD CURRENT (A)
EFFICIENCY (%)
70
80
90
V+ = 6V
V+ = 28V
V+ = 12V
MAX1653
f = 300kHz
MAX1652–MAX1655
High-Efficiency, PWM, Step-Down
DC-DC Controllers in 16-Pin QSOP
6 _______________________________________________________________________________________
MAX1654
SHDN
DH
-5V
OUTPUT
+5V
OUTPUT
INPUT
6V TO 30V
BST
LX
DL
PGND
CSH
CSL
SS
REF
FROM
REF
SYNC
GND
V+
VL
FB
SECFB
Typical Operating Circuits (continued)