Rainbow-electronics MAX8645Y Manual do Utilizador descarregar pdf (Página 11)

MAX8645X/MAX8645Y

1x/1.5x/2x White LED Charge Pumps with Two

LDOs in 4mm x 4mm TQFN

______________________________________________________________________________________ 11

MAX8645X

MAX8645Y

1μF

10μF

0.01μF

10μF

GND

OUT

MAIN FLASH

OUTPUT

UP TO 480mA

1μF

LDO1

LDO2

C2P C2N

1μF

C1P C1N

REFBPSETM SETF PGND

ON/OFF AND

VOLTAGE

SELECTION

INPUT

2.7V TO 5.5V

ENM2

ENM1

ENF

ENLDO

4.12kΩ

6.81kΩ

Figure 3. Providing Increased LED Current per LED

MAX8645X

MAX8645Y

1μF

0.01μF

10μF

OFF

GND

OUT

MAIN FLASH

OUTPUT

UP TO 480mA

1μF

10μF

LDO1

LDO2

C2P C2N

1μF

C1P C1N

REFBPSETM SETF PGND

VOLTAGE

SELECTION

INPUT

2.7V TO 5.5V

ENM2

ENM1

ENF

ENLDO

SETF

4.12kΩ

PWM INPUT

ON/OFF

SETM

6.81kΩ

Figure 2. Dimming Using PWM Signal into ENM1

1 2 ... 6 7 8 9 10 11 12 13 14 15

MAX8645X/MAX8645Y 1
Two LDOs in 4mm x 4mm TQFN 1
LDOs in 4mm x 4mm TQFN 10
MAX8645YETI 13

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