参数资料
| 型号： | LT1768IGN#TR |
| 厂商： | Linear Technology |
| 文件页数： | 2/20页 |
| 文件大小： | 0K |
| 描述： | IC CTRLR CCFL SGL/MULT HP 16SSOP |
| 标准包装： | 2,500 |
| 类型： | CCFL 控制器 |
| 频率： | 300 ~ 410 kHz |
| 电流 - 电源： | 7mA |
| 电流 - 输出： | 1.5A |
| 电源电压： | 9 V ~ 24 V |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 16-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SSOP |
| 包装： | 带卷 (TR) |
LT1768
ABSOLUTE
(Note 1)
AXI U RATI GS
PACKAGE/ORDER I FOR ATIO
Input Voltage (V IN Pin) ............................................ 28V
SHDN Pin Voltage .................................................... 28V
TOP VIEW
ORDER PART
NUMBER
FAULT Pin Voltage ................................................... 28V
PGND
1
16 GATE
PROG Pin Voltage ................................................... 5.5V
PWM Pin Voltage .................................................... 4.5V
DI01
DI02
2
3
15 V IN
14 V REF
LT1768CGN
LT1768IGN
GN PART
MARKING
1768I
C T Pin Voltage ........................................................ 4.5V
SENSE Pin Voltage .................................................... 1V
DIO1, DIO2 Input Current ................................... ± 50mA
R MAX Pin Source Current ..................................... 750 μ A
R MIN Pin Source Current ..................................... 750 μ A
V REF Pin Source Current ....................................... 10mA
Operating Junction Temperature Range
LT1768C ................................................ 0 ° C to 125 ° C
LT1768I ............................................ – 40 ° C to 125 ° C
Storage Temperature Range ................. – 65 ° C to 150 ° C
Lead Temperature (Soldering 10 sec)................... 300 ° C
SENSE 4 13 FAULT
VC 5 12 SHDN
AGND 6 11 R MIN
C T 7 10 R MAX
PROG 8 9 PWM
GN PACKAGE 1768
16-LEAD PLASTIC SSOP
T JMAX = 125 ° C, θ JA = 100 ° C/W
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T A = 25 ° C, V VIN = 12V, I DIO1/2 = 250 μ A, V PROG = 0V, V PWM = 2.5V, I RMAX = –100 μ A,
I RMIN = –100 μ A, unless otherwise specified.
SYMBOL
I Q
I SHDN
PARAMETER
Supply Current
Supply Current in Shutdown
CONDITIONS
9V< V VIN < 24V
V SHDN = 0V
q
q
MIN
TYP
7
65
MAX
8
100
UNITS
mA
μ A
SHDN Pin Pull-Up Current
SHDN Threshold Voltage
SHDN Threshold Hysteresis
V IN Undervoltage Lockout
V IN Undervoltage Lockout
V SHDN = 0V
V SHDN Off to On
V IN Off to On
V IN On to Off
q
q
q
q
q
4
0.6
100
7.2
7.1
7
1.26
200
7.9
7.4
12
1.8
300
8.2
7.6
μ A
V
mV
V
V
V REF
V RMAX
V RMIN
FSW
REF Voltage
REF Line Regulation
REF Load Regulation
R MAX Pin Voltage
R MIN Pin Voltage
Switching Frequency
I REF = –1mA
? V VIN 8V to 24V I REF = –1mA
? I REF –1mA to –10mA
V PROG = 0.75V, V SENSE = 0V
q
q
q
q
q
q
4.9
1.225
1.22
300
5
7
10
1.25
1.26
350
5.1
20
20
1.275
1.30
410
V
mV
mV
V
V
kHz
Maximum Duty Cycle
Minimum ON Time
V PROG = 0.75V, V SENSE = 0V
V PROG = 0.75V, V SENSE = 150mV
93
125
%
ns
I PROG
PROG Pin Input Bias Current
V PROG = 5V
q
100
500
nA
V PROG
PROG Pin Voltage for Zero Lamp Current
PROG Pin Voltage for Minimum Lamp Current
PROG Pin Voltage for Maximum Lamp Current
(Note 2)
(Note 3)
(Note 4)
q
q
q
0.45
0.9
3.8
0.5
1
4
0.55
1.1
4.2
V
V
V
2
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