lt1186f Linear Technology Corporation, lt1186f Datasheet - Page 10

• Manufacturer Part Number: lt1186f
• Description: Dac Programmable Ccfl Switching Regulator
• Manufacturer: Linear Technology Corporation

LT1186F
10
BLOCK
SHUTDOWN
6
DIAGRAM
I
CCFL
2
CLK
W
D
SHUTDOWN
POWER-ON
CS
IN
RESET
V1
0.465V
7
9
8
+
–
CCFL
LT1186F DAC Programmable CCFL Switching Regulator
REGULATOR
2
200kHz
Q3
V
2.4V
OSC
AGND
12
CC
5
1
Q5
Q4
5
CONTROL
LATCH
LATCH
LOGIC
LOGIC
LOGIC
VOLTAGE
LOCKOUT
AND
AND
UNDER-
9
Q7
DIO
MODE SELECT
0 = PULSE
1 = SPI
UP ONLY/
UP/DN
3
SHUTDOWN
Q6
2
Q8
1
THERMAL
D1
BULB
15
REFERENCE
D2
6V
VOLTAGE
3
Q9
SHDN
Q11
CLK
UP/DN
CLK
DO(LSB)
R3
1k
BAT
14
–
8
0.1
R4
g
8-BIT COUNTER/REGISTER
m
9-BIT SHIFT REGISTER
Q10
2
ROYER
13
+
SHDN
CCFL
V
4
C
LOGIC
COMP
CURRENT
8-BIT
DAC
8
8
DRIVE
ANTI-
CURRENT
SAT
GAIN = 4.4
AMP
Q9
–
+
FULL SCALE
PGND
CCFL
50 A
CCFL
V
16
11
SW
1
LT1186F • BD
Q1
R1
0.125
I
OUT
10
D
OUT