MAX8576 MAXIM [Maxim Integrated Products], MAX8576 Datasheet - Page 10

• Manufacturer Part Number: MAX8576
• Description: 3V to 28V Input, Low-Cost, Hysteretic Synchronous Step-Down Controllers
• Manufacturer: MAXIM [Maxim Integrated Products]

3V to 28V Input, Low-Cost, Hysteretic
Synchronous Step-Down Controllers
Figure 2. MAX8576/MAX8577 Typical Application Circuit
Figure 3. MAX8578/MAX8579 Typical Application Circuit
10
OFF
______________________________________________________________________________________
INPUT
9V TO 24V
OFF
ON
INPUT
9V TO 24V
3V TO 5.5V
ON
R4
R5
12V INPUT, 1.8V/5A OUTPUT (f
CIRCUIT IS TARGETED FOR 10.8V TO 13.2V INPUT. HOWEVER, INPUT RANGE OF 9V TO 24V
IS POSSIBLE FOR IC EVALUATION. 30V RATED MOSFET MUST BE INSTALLED IF INPUT IS
RAISED ABOVE 16V. ALL OTHER COMPONENTS CAN REMAIN UNCHANGED.
C16
Q3
R9
C4
C17
12V INPUT, 1.8V/12A OUTPUT (f
CIRCUIT IS TARGETED FOR 10.8V TO 13.2V INPUT. HOWEVER, INPUT RANGE OF 9V TO 24V
IS POSSIBLE FOR IC EVALUATION. 30V RATED MOSFET MUST BE INSTALLED IF INPUT IS
RAISED ABOVE 16V. ALL OTHER COMPONENTS CAN REMAIN UNCHANGED.
R1
C6
1
2
3
4
5
FB
SS
V
GND
DL
1
2
3
4
5
CC
FB
SS
VL
GND
DL
R13
R8
MAX8578
MAX8579
S
= 500kHz, ALL CERAMIC)
MAX8576
MAX8577
S
= 300kHz)
D2
OCSET
BST
D1
OCSET
DH
EN
LX
BST
DH
LX
IN
10
8
9
7
6
10
9
8
7
6
C5
C18
C21
C7
R10
C11
R2
Q4
Q5
Q1
Q2
C14
C15
C3
C1
C2
R12
R6
C23
C13
R11
R3
C19
C8
L2
L1
C20
R7
C12
V
1.8V/5A
OUT
C9
C22
OUTPUT
1.8V/12A
C10