MAX8545/MAX8546/MAX8548
Low-Cost, Wide Input Range, Step-Down
Controllers with Foldback Current Limit
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COMPONENT QTY DESCRIPTION
C1, C4 2
1µF, 10V X7R ceramic capacitors
Taiyo Yuden LMK212BJ105MG
C2 0 Not installed
C3 1
1200µF, 10V, 44mΩ, 1.25A aluminum
electrolytic capacitor
Sanyo 10MV1200AX
(10 x 16 case size)
C5, C8, C9 3
0.1µF, 10V X7R ceramic capacitors
Kemet C0603C104M8RAC
C6, C7 2
1000µF, 6.3V, 69mΩ, 0.8A aluminum
electrolytic capacitors
Sanyo 6.3MV1000AX (8 x 20 case size)
C10 1
1.5nF, 10V X7R ceramic capacitor
Kemet C0603C152M8RAC
C11 0 Not installed
D1, D2 2
30V, 100mA Schottky diodes
Central Semiconductor CMPSH-3
L1 1
4.7µH, 5.7A, 18mΩ inductor
Sumida CDRH124-4R7
Q1 1
20V/30V, 35mΩ dual N-channel
8-pin SO
V i shay S i 4966D Y ( f o r 2.7 V t o 3.6 V
IN
)
Fair chil d FD S 6912A ( f or 4 .5 V t o 5 .5 V
IN
)
R1 1 10Ω ±5% resistor
R2 1 150kΩ ±5% resistor
R3 1 5.11kΩ ±1% resistor
R4 1 4.02kΩ ±1% resistor
COMPONENT QTY DESCRIPTION
C1, C4 2
1µF, 10V X7R ceramic capacitors
Taiyo Yuden LMK212BJ105MG
C2, C3 2
1200µF, 10V, 44mΩ, 1.25A aluminum
electrolytic capacitors
Sanyo 10MV1200AX
(10 x 16 case size)
C5, C8, C9 3
0.1µF, 10V X7R ceramic capacitors
Kemet C0603C104M8RAC
C6, C7 2
1500µF, 6.3V, 44m Ω, 1.25A al um i num
el ectr ol ytic cap acitor s
S anyo 6.3M V1500AX (10 x 20 case si ze)
C10 1
1.5nF, 10V X7R ceramic capacitor
Kemet C0603C152M8RAC
C11 0 Not installed
D1, D2 2
30V, 100mA Schottky diodes
Central Semiconductor CMPSH-3
L1 1
2.1µH, 8A, 11.6mΩ inductor
Sumida CEP122-2R1
Q1 1
20V, 18m Ω d ual N- channel 8- pi n SO
Fair chil d FD S 6898A ( f or 2 .7 V t o 3 .6 V
IN
)
Fair chil d FD S 6890A ( f or 4 .5 V t o 5 .5 V
IN
)
R1 1 10Ω ±5% resistor
R2 1 110kΩ ±5% resistor
R3 1 5.11kΩ ±1% resistor
R4 1 4.02kΩ ±1% resistor
Table 1a. Component Selection for
Standard Applications for V
IN
= 2.7V to
5.5V, V
OUT
= 1.8V / 3A (Figure 1)
(MAX8546 Only)
Table 1b. Component Selection for
Standard Applications for V
IN
= 2.7V to
5.5V, V
OUT
= 1.8V / 6A (Figure 1)
(MAX8546 Only)
(34 paginas)
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