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参数资料
| 型号： | MAX8785ETI+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 5/19页 |
| 文件大小： | 0K |
| 描述： | IC CCFL CTRL 28-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | CCFL 控制器 |
| 电流 - 电源： | 1.5mA |
| 电源电压： | 4.5 V ~ 28 V |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 28-WFQFN 裸露焊盘 |
| 供应商设备封装： | 28-TQFN-EP（5x5） |
| 包装： | 带卷 (TR) |
Full-Bridge Controller for
Piezoelectric Transformers
ELECTRICAL CHARACTERISTICS (continued)
(V BATT = 12V, V DD1 = V DD2 = V SHDN , T A = -40°C to +85°C , unless otherwise noted.) (Note 1)
PARAMETER
Current-Limit Leading-Edge Blanking
IFB Regulation Point
IFB Input Bias Current
IFB Lamp-Out Threshold
IFB-to-COMP Transconductance
COMP Discharge Current During Overvoltage
Initial Startup COMP Charging Current
COMP Maximum Voltage Threshold
VFB Input Bias Current
VFB Overvoltage Threshold
VFB Short-Circuit Threshold
OLF Input Voltage Range
OLF Input Bias Current
OLF Trip Threshold
Main Oscillator Frequency
DPWM Chopping Frequency
CNTL Minimum Duty-Cycle Threshold
CNTL Maximum Duty-Cycle Threshold
CONDITIONS
0 < V IFB < +3V
-3V < V IFB < 0
Reject 1μs glitches
1V < V COMP < 3V
V IFB = 800mV, V VFB = 2.5V, V COMP = 2V
-4V < V VFB < +4V
V FB rising
V FB rising
-4V < V OLF < +4V
OLF rising
R HF = 100k Ω , V COMP = 0V
R LF = 150k Ω
MIN
240
760
-2
-225
720
50
0.5
7
3.15
-2
2.05
200
-4
-2
1.1
57
198
0.20
1.9
TYP
MAX
500
840
+2
880
150
2.0
11
3.35
+2
2.45
260
+4
+2
1.3
63
218
0.26
2.1
UNITS
ns
mV
μA
mV
μs
mA
μA
V
μA
V
mV
V
μA
V
kHz
Hz
V
V
LSYNC Input Low Voltage
LSYNC Input High Voltage
2.2
0.8
V
V
LSYNC Input Frequency Range
120
280
Hz
LSYNC Minimum Duty Cycle
SEL Input Low Voltage
SEL Input High Voltage
SHDN Input Low Voltage
SHDN Input High Voltage
10
2.2
2.2
0.8
0.8
%
V
V
V
V
V VFB > 2.4V or V IFB < 720mV;
V OLF < 1.1V; V TFLT = 2.0V
0.60
0.90
TFLT Charging Current
TFLT Sink Current
TFLT Trip Threshold
FLT Sink Current
V VFB < 2.05V and V IFB > 880mV;
V OLF < 1.1V; V TFLT = 2.0V
V VFB < 200mV or V OLF > 1.3V;
V TFLT = 2.0V
V TFLT = 2.0V
TFLT rising
V TFLT = 3.1V; V FLT = 0.4V
-1.0
2.24
80
2.90
1
-0.5
3.36
190
3.10
μA
mA
V
mA
Note 1: -40°C specifications are guaranteed by design, not production tested.
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