MAX1549ETL Datasheet, PDF (31/35 Pages) Maxim Integrated Products – Dual, Interleaved, Fixed-Frequency Step-Down Controller with a Dynamically Adjustable Output

Dual, Interleaved, Fixed-Frequency Step-Down
Controller with a Dynamically Adjustable Output
+5V BIAS
SUPPLY
R1
20Ω
C2
1µF
R7
R6
POWER-GOOD
C_REF
0.22µF
R2
R3
R4
OUT2
R5
R8
R9
C3
UNUSED
C1
1µF
V_CC
SKIP
PGOOD1
PGOOD2
V_DD
DH2
BST2
LX2
DL2
PGND
GND
CSH2
MAX1549
REF
CSL2
OUT2
FB2
ILIM1
DH1
ILIM2
BST1
LX1
DL1
REFIN
D_BST
N_H2
C_BST
INPUT (V_IN)
N_L2 D_L2
L2
R_CS2
V_DD
D_BST
N_H1
C_BST
C_OUT2
OUTPUT 2
V_DDQ = 2.5V
N_L1 D_L1
L1
FBLANK
OD3
OD2
0D1
G0
G1
CSH1
CSL1
OUT1
CC1
C_CC1
470pF
FSEL
OPEN (300kHz)
ON1
ON2
ON OFF
R_CS1
C_OUT1
OUTPUT 1
V_TT = V_DDQ/2
POWER GROUND
ANALOG GROUND
Figure 9. Active Bus Termination
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