Datasheet

Maxim Integrated │ 17
MAX17503 4.5V-60V, 2.5A, High-Efciency,
Synchronous Step-Down DC-DC Converter
With Internal Compensation
www.maximintegrated.com
Typical Application Circuits
RESET
V
IN
V
IN
V
IN
BSTRT
SYNC
MODE
V
CC
SGND
CF SS
FB
PGNDPGNDPGND
LX
LX
LX
EN/UVLO
MAX17503
L1
10µH
C5
0.1µF
C4
22µF
R3
178kΩ
R4
39kΩ
V
OUT
5V, 2.5A
V
IN
(6.5V TO 60V)
C1
2.2µF
C3
5.6nF
C2
2.2µF
f
SW
= 500kHz
Figure 4a - 5V Output, 500kHz Switching Frequency
Figure 4b - 3.3V Output, 500kHz Switching Frequency
RESET
V
IN
V
IN
V
IN
BSTRT
SYNC
MODE
V
CC
SGND
CF SS
FB
PGNDPGNDPGND
LX
LX
LX
V
IN
(6.5V TO 60V)
EN/UVLO
MAX17503
L1
6.8µH
C5
0.1µF
C4
47µF
R3
127kΩ
R4
47.5k
Ω
V
OUT
3.3V, 2.5A
C1
2.2uF
C3
5600pF
C2
2.2
µF
f
SW
= 500kHz
V
IN