Datasheet

MAX1953/MAX1954/MAX1957
Low-Cost, High-Frequency, Current-Mode PWM
Buck Controller
12 ______________________________________________________________________________________
ILIM
COMP
GND
BST
DH
LX
DL
PGND
FB
IN
MAX1953
V
OUT
2.5V AT 3A
V
IN
3V TO 5.5V
N1
D1
C5
4.7µF
C6
10µF
C1
10µF
C2
0.1µF
C3
10µF
C4
10µF
L1
1µH
C
C
270pF
R
C
33kΩ
R1
16.9kΩ
R2
8.06Ω
Figure 1. Typical Application Circuit for the MAX1953
HSD
COMP
GND
BST
DH
LX
DL
PGND
FB
IN
MAX1954
V
OUT
1.7V AT 3A
V
IN
3V TO 5.5V
N1
D1
V
HSD
5.5V TO 13.2V
C2
10µF
L1
2.7µH
C3
0.1µF
C4
180µF
R1
9.09kΩ
R2
8.06kΩ
C1
0.22µF
C
C
1000pF
C
f
47pF
R
C
62kΩ
Figure 2. Typical Application Circuit for the MAX1954