LP3954 Datasheet, PDF (38/60 Pages) National Semiconductor (TI) – Advanced Lighting Management Unit

LP3954
SNVS340D – JUNE 2005 – REVISED MARCH 2013
Application Examples
EXAMPLE 1
+
-
C_IN
C_VDD1
10 éF 100 nF
L1
4.7 éH
D1
SW
BATTERY
V_DD2
V_DD1
C_VDDA
1 éF
V_DDA
C_REF
100 nF
V_REF
IRGB
IRT
R_RGB
MCU
C_VDDIO
100 nF
R_RT
LP3954
SO
SI
SCK/SCL
SS/SDA
SYNC/PWM
VDDIO
IF_SEL
CAMERA
AUDIO
GND
FLASH_EN
ASE
GNDS
FB
WLED1
WLED2
WLED3
WLED4
WLED5
WLED6
R1
G1
B1
R2
G2
B2
FLASH
IFLASH
• MAIN BACKLIGHT
• SUB BACKLIGHT
• AUDIO SYNCHRONIZED FUNLIGHTS
• RGB INDICATION LIGHT
• FLASH LED
Figure 43. Flip Phone
www.ti.com
I_MAX = 300...400 mA
V_OUT = 4...5.3V
C_OUT
10 éF
MAIN
&
SUB
BACKLIGHT
FUNLIGHTS
VBAT
RGB
INDICATION
LED
R_FLASH
SINGLE
WHITE
FLASH LED
300 mA
38
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