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| AAT3112 Datasheet, PDF (14/16 Pages) Advanced Analogic Technologies – 500mA High Efficiency Charge Pump for White LED Flash Applications | |||
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Application Circuits
AAT3112
500mA High Efficiency Charge Pump
for White LED Flash Applications
VIN
TPULSE
100ms - 500ms
C1 = 1μF C2 = 1μF
CIN=10μF
C1+ C1- C2 + C2-
VIN
VOUT
VOUT
EN1
EN2
GND
COUT=10μF
D1
D2
D3
D4
Flash LED
R2=10
Q1
Figure 1: Flash Application.
VIN
Light/Movie
Mode Enable
CIN=10μF
TPULSE
Flash Enable
C1 = 1μF
C2 = 1μF
C1+ C1- C2+ C2-
VIN
VOUT
VOUT
EN1
EN2
GND
COUT=10μF
D1
D2
D3
D4
Flash LED
LL4148
R3=60 - 100
R2=10
R1
Q1
2K
C3
0.1μF
Figure 2: Movie Mode Light with Flash Function.
14
3112.2007.01.1.5
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