SC668 Datasheet, PDF (12/46 Pages) Semtech Corporation – 8 LED Light Management Unit Automatic Dropout Prevention , Ambient Light Sense Input, PWM Dimming, and 4 LDOs

Block Diagram
V_IN
IN 2
GND 3
PWM 15
Digital
LP Filter
EN 16
Current sink
control block
SDA 14
SCL 13
ADI 12
I²C
Interface
V_LDO4
ADC
Register
Space
Reg (00h)
to
Reg (16h)
AD_RISE
AD_FALL
AD_OUT
Digital
Interface
Logical
Control
LDO
DAC
Backlight
DAC
V_IN
V_{LDO_REF}
SC668
4 BL8
5 BL7
6 BL6
7 BL5
8 BL4
9 BL3
10 BL2
11 BL1
V_IN
LDO1
V_IN
LDO2
V_IN
LDO3
V_IN
LDO4
17 BYP
1 LDO1
20 LDO2
19 LDO3
18 LDO4
12