MAX1652 Datasheet, PDF (6/28 Pages) Maxim Integrated Products – High-Efficiency, PWM, Step-Down DC-DC Controllers in 16-Pin QSOP

High-Efficiency, PWM, Step-Down
DC-DC Controllers in 16-Pin QSOP
Typical Operating Circuits (continued)
INPUT
6V TO 30V
V+
SECFB
SHDN
FB
VL
MAX1654
DH
BST
LX
DL
SS
PGND
REF
CSH
GND
SYNC
CSL
FROM
REF
-5V
OUTPUT
+5V
OUTPUT
__________________________________________Typical Operating Characteristics
(Circuit of Figure 1, SKIP = GND, T_A = +25°C, unless otherwise noted.)
EFFICIENCY vs.
LOAD CURRENT (3.3V/1A CIRCUIT)
100
V+ = 6V
90
EFFICIENCY vs.
LOAD CURRENT (3.3V/2A CIRCUIT)
100
90 ^{V+ = 6V}
EFFICIENCY vs.
LOAD CURRENT (3.3V/3A CIRCUIT)
100
V+ = 6V
90
80
70
60
50
0.001
V+ = 28V
V+ = 12V
MAX1653
f = 300kHz
0.01
0.1
1
10
LOAD CURRENT (A)
80
70
60
50
0.001
V+ = 28V
V+ = 12V
MAX1653
f = 300kHz
0.01
0.1
1
10
LOAD CURRENT (A)
80
70
60
50
0.001
V+ = 12V
V+ = 28V
MAX1653
f = 300kHz
0.01
0.1
1
10
LOAD CURRENT (A)
6 _______________________________________________________________________________________