LT1768IGN Linear Technology, LT1768IGN Datasheet - Page 20

• Manufacturer Part Number: LT1768IGN
• Description: IC CTRLR CCFL SGL/MULT HP 16SSOP
• Manufacturer: Linear Technology
• Type: CCFL Controllerr

Specifications of LT1768IGN

• Frequency: 300 ~ 410 kHz
• Current - Supply: 7mA
• Current - Output: 1.5A
• Voltage - Supply: 9 V ~ 24 V
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 16-SSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

LT1768
TYPICAL
RELATED PARTS
20
PART NUMBER
LT1170
LT1182/LT1183
LT1184
LT1186
LT1372
LT1373
LT1786F
V
IN
= 9V TO 24V
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] FAX: [phone]
0V TO 5V OR
1kHz PWM
APPLICATION
PROG
DESCRIPTION
Current Mode Switching Regulator
CCFL/LCD Contrast Switching Regulators
CCFL Current Mode Switching Regulator
CCFL Current Mode Switching Regulator
500kHz, 1.5A Switching Regulator
250kHz, 1.5A Switching Regulator
SMBus Controlled CCFL Switching Regulator
C1
33 F
49.9k
C2
0.047 F
C3
0.22 F
R1
C4
10 F
1
2
3
4
5
6
7
8
U
PGND
DI02
DI01
SENSE
V
AGND
C
PROG
C
T
LT1768
www.linear.com
FAULT
SHDN
R
PWM
GATE
R
V
MAX
MIN
V
REF
IN
4 Watt Single Lamp CCFL Supply
16
15
14
13
12
11
10
9
31.6k
R4
FAULT
SHUTDOWN
C6
1 F
R2
39.2k
R3
61.9k
5V
C5
0.1 F
124k
COMMENTS
5.0A, 100kHz
3V V
Open Lamp Protection, Positive or Negative Contrast
1.25A, 200kHz
1.25A, 100kHz, SMBus Interface
Small 4.7 H Inductor, Only 0.5 Square Inch of PCB
1mA I
Precision 100 A Full Scale Current DAC
R5
Q
IN
at 250kHz, Regulates Positive or Negative Outputs
30V, CCFL Switch: 1.25A, LCD Switch: 625mA,
499
R7
X1
MBRS130LT3
CTX110607
T1
LAMP
C8
1000pF
D2
sn1768 1768fs LT/TP 0901 2K • PRINTED IN USA
LINEAR TECHNOLOGY CORPORATION 2000
33pF
100
C9
R2
Q1A
ZDT1048
0.33 F
C7
Q2
Si3456DV
R6
0.05
L1
33 H
ZDT1048
Q1B
1768 TA09