MAX1549ETL Datasheet, PDF (16/35 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
C1
1µF
D_BST
N_H1
C_BST
0.1µF
D_L1
L1
N_L1
2.5µH
V_DD
DH1
BST1
LX1
DL1
R_CS1
12mΩ
OUTPUT 1
V_OUT1 = V_REFIN
C_OUT1
470µF
C_REF
0.22µF
R2
100kΩ
R3
100kΩ
CSH1
CSL1
OUT1
C_CC1
470pF
CC1
REF
R4
100kΩ
R5
100kΩ
ILIM1
ILIM2
DH2
BST2
LX2
DL2
PGND
GND
CSH2
MAX1549
CSL2
OUT2
FB2
SKIP
FSEL
ON1
ON2
V_CC
PGOOD1
PGOOD2
REFIN
OD3
DYNAMIC OUT1
G0
CONTROL INPUTS
G1
OD2
OPEN (100µs)
FBLANK
OD1
POWER GROUND
D_BST
N_H2
C_BST
0.1µF
INPUT (V_IN)
5V TO 16V
C_IN
(2) 10µF
D_L2
N_L2
L2
4.7µH
R_CS2
15mΩ
OUTPUT 2
V_OUT2 = 2.5V
C_OUT2
330µF
OPEN (300kHz)
R1
20Ω
C2
1µF R6
100kΩ
ON OFF
+5V BIAS
SUPPLY
R7
100kΩ
R10
66.5kΩ
R8
100kΩ
POWER-GOOD
REF
R11
150kΩ
R12
487kΩ
C_REFIN
470pF
R9
301kΩ
ANALOG GROUND
SEE TABLE 1 FOR COMPONENT SPECIFICATIONS.
Figure 1. Standard Applications Circuit
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