sc656 Semtech Corporation, sc656 Datasheet - Page 11

• Manufacturer Part Number: sc656
• Description: Backlight Driver For 7 Leds With Charge Pump And Pwm Control
• Manufacturer: Semtech Corporation

Block Diagram
BANK2
BANK1
ISETM
ISETS
GND
ENM
ENS
IN
14
20
13
12
2
3
4
1
Configuration
Digital LPF
Digital LPF
Converter,
Converter,
LED Bank
Interface,
Interface,
Current
Current
Control
Setting
Setting
Control
Level
Block
Block
Level
Logic
V
IN
C1+ C1- C2+ C2-
17
Fractional Charge Pump
(1x, 1.5x, 2x)
Oscillator
16
18
15
V
OUT
19
10
11
5
6
7
8
9
OUT
BL1
BL2
BL3
BL4
BL5
BL6
BL7