LT1786F Linear Technology, LT1786F Datasheet - Page 10

• Manufacturer Part Number: LT1786F
• Description: SMBus Programmable CCFL Switching Regulator
• Manufacturer: Linear Technology

LT1786F
10
BLOCK
SHDN
6
SDA
SCL 10
DIAGRAM
9
I
CCFL
2
INTERFACE
SMBus
ADR
W
SHUTDOWN
8
V1
0.465V
+
–
CCFL
LT1786F SMBus Programmable CCFL Switching Regulator
REGULATOR
1
2
200kHz
Q3
V
2.4V
AGND
OSC
12
CC
5
EN1
3-BIT LATCH
REGISTER A
POWER-ON
1
Q5
RESET
SD
Q4
5
LOCKOUT
VOLTAGE
UNDER-
9
Q7
DIO
6
3
1
SMBSUS
SHUTDOWN
Q6
2
Q8
1
THERMAL
7
D1
BULB
EN2
EN2
15
6-BIT LATCH
1-BIT LATCH
REGISTER C
REGISTER B
D2
6V
3
Q9
SHUTDOWN
Q11
R3
1k
BAT
14
SD
–
0.1
R4
g
m
Q10
2
ROYER
6
13
+
CCFL
V
4
SD
SD
C
LOGIC
COMP
REFERENCE
VOLTAGE
CURRENT
6-BIT
DAC
DRIVE
ANTI-
CURRENT
SAT
GAIN = 4.4
AMP
R
ADJ
–
+
PGND
CCFL
CCFL
11
V
16
SW
1
Q1
1786 BD
R1
0.125
I
OUT