Rainbow Electronics MAX8645Y - Manual (Page 11)

MAX8645X/MAX8645Y
1x/1.5x/2x White LED Charge Pumps with Two
LDOs in 4mm x 4mm TQFN
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MAX8645X
MAX8645Y
1 μF
10 μF
0.01 μF
10 μF
PIN
IN
GND
P1
P2
OUT
MAIN FLASH
OUTPUT
UP TO 480mA
1 μF
1 μF
LDO1
LDO2
C2P C2N
1 μF
C1P C1N
REFBP SETM SETF PGND
ON/OFF AND
VOLTAGE
SELECTION
INPUT
2.7V TO 5.5V
ENM2
ENM1
ENF
ENLDO
M1
M2
M3
M4
M5
M6
F1
F2
4.12k Ω 6.81k Ω
Figure 3. Providing Increased LED Current per LED
MAX8645X
MAX8645Y
C4
1 μF
C8
0.01
μF
C1
10 μF
PIN
IN
ON
OFF
GND
P1
P2
OUT
MAIN FLASH
OUTPUT
UP TO 480mA
C6
1
μF
C7
1
μF
C5
10
μF
LDO1
LDO2
C2P C2N
C3
1 μF
C1P C1N
REFBP SETM SETF PGND
VOLTAGE
SELECTION
INPUT
2.7V TO 5.5V
ENM2
ENM1
ENF
ENLDO
M1
M2
M3
M4
M5
M6
F1
F2
R SETF
4.12k Ω
PWM INPUT
ON/OFF
ON/OFF
R SETM
6.81k Ω
Figure 2. Dimming Using PWM Signal into ENM1