LT1768IGN Linear Technology, LT1768IGN Datasheet - Page 2

• 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

ABSOLUTE AXI U RATI GS
LT1768
(Note 1)
Input Voltage (V
SHDN Pin Voltage .................................................... 28V
FAULT Pin Voltage ................................................... 28V
PROG Pin Voltage ................................................... 5.5V
PWM Pin Voltage .................................................... 4.5V
C
SENSE Pin Voltage .................................................... 1V
DIO1, DIO2 Input Current ................................... 50mA
R
R
V
Operating Junction Temperature Range
Storage Temperature Range ................. – 65 C to 150 C
Lead Temperature (Soldering 10 sec)................... 300 C
temperature range, otherwise specifications are at T
I
SYMBOL
I
I
V
V
V
FSW
I
V
2
ELECTRICAL CHARACTERISTICS
Q
SHDN
PROG
RMIN
REF
RMAX
RMIN
PROG
T
REF
MAX
MIN
LT1768C ................................................ 0 C to 125 C
LT1768I ............................................ – 40 C to 125 C
Pin Voltage ........................................................ 4.5V
= –100 A, unless otherwise specified.
Pin Source Current ....................................... 10mA
Pin Source Current ..................................... 750 A
Pin Source Current ..................................... 750 A
PARAMETER
Supply Current
Supply Current in Shutdown
SHDN Pin Pull-Up Current
SHDN Threshold Voltage
SHDN Threshold Hysteresis
V
V
REF Voltage
REF Line Regulation
REF Load Regulation
R
R
Switching Frequency
Maximum Duty Cycle
Minimum ON Time
PROG Pin Input Bias Current
PROG Pin Voltage for Zero Lamp Current
PROG Pin Voltage for Minimum Lamp Current
PROG Pin Voltage for Maximum Lamp Current
IN
IN
MAX
MIN
IN
Undervoltage Lockout
Undervoltage Lockout
W
Pin) ............................................ 28V
Pin Voltage
Pin Voltage
W W
U
A
= 25 C, V
The
VIN
CONDITIONS
9V< V
V
V
V
V
V
I
V
V
V
V
(Note 2)
(Note 3)
(Note 4)
denotes the specifications which apply over the full operating
REF
SHDN
SHDN
SHDN
IN
IN
PROG
PROG
PROG
PROG
V
I
REF
= 12V, I
VIN
Off to On
On to Off
= –1mA
PACKAGE/ORDER I FOR ATIO
Consult LTC Marketing for parts specified with wider operating temperature ranges.
VIN
–1mA to –10mA
8V to 24V I
= 0V
= 0V
Off to On
= 0.75V, V
= 0.75V, V
= 0.75V, V
= 5V
< 24V
DIO1/2
SENSE
PGND
AGND
PROG
DI01
DI02
VC
C
T
T
SENSE
SENSE
SENSE
REF
JMAX
= 250 A, V
16-LEAD PLASTIC SSOP
1
2
3
4
5
6
7
8
= –1mA
= 125 C,
GN PACKAGE
= 0V
= 0V
= 150mV
TOP VIEW
JA
PROG
= 100 C/W
16
15
14
13
12
11
10
= 0V, V
9
GATE
V
V
FAULT
SHDN
R
R
PWM
IN
REF
MIN
MAX
1.225
1.22
0.45
MIN
100
300
0.6
7.2
7.1
4.9
0.9
3.8
4
PWM
U
= 2.5V, I
1.26
1.25
1.26
TYP
200
350
125
100
7.9
7.4
0.5
65
10
93
7
7
5
7
1
4
ORDER PART
LT1768CGN
LT1768IGN
MARKING
W
GN PART
NUMBER
RMAX
1768
1768I
1.275
MAX
1.30
0.55
100
300
410
500
1.8
8.2
7.6
5.1
1.1
4.2
12
20
20
8
= –100 A,
UNITS
U
kHz
mA
mV
mV
mV
nA
ns
%
A
A
V
V
V
V
V
V
V
V
V