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参数资料
| 型号： | MAX8785ETI+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 4/19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 = 5.35V, R RATE = 190k Ω , T A = 0°C to +85°C , unless otherwise noted. See Figure 1. Typical values
are at T A = +25°C.)
PARAMETER
SHDN Input Bias Current
TFLT Charging Current
TFLT Trip Threshold
TFLT Sink Current
CONDITIONS
0 < V SHDN < 5.5V
V VFB > 2.4V or V IFB < 720mV;
V OLF < 1.1V; V TFLT = 2.0V
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
TFLT rising
V TFLT = 2.0V
MIN
-1
0.60
-1
2.24
2.90
80
TYP
0.75
-0.75
2.8
3.0
135
MAX
+1
0.90
-0.5
3.36
3.10
160
UNITS
μA
μA
mA
V
mA
FLT Sink Current
FLT Leakage Current
V TFLT = 3.1V, V FLT = 0.4V
V TFLT = 0, V FLT = 5.5V
1
1
mA
μA
ELECTRICAL CHARACTERISTICS
(V BATT = 12V, V DD1 = V DD2 = V SHDN , T A = -40°C to +85°C , unless otherwise noted.) (Note 1)
PARAMETER
BATT Input Voltage Range
BATT Quiescent Current
BATT Quiescent Current, Shutdown
V CC Output Voltage, Normal Operation
V CC Output Voltage, Shutdown
V CC Undervoltage-Lockout Threshold
CONDITIONS
V CC = V DD1 = V DD2 = open
V CC = V DD1 = V DD2 = BATT
V SHDN = 5.5V, V BATT = 28V
V SHDN = 0
V SHDN = 5.5V, 6V < V BATT < 28V,
0 < I LOAD < 20mA
V SHDN = 0, no load
V CC rising (leaving lockout)
V CC falling (entering lockout)
MIN
5.5
4.5
5.20
3.5
3.95
TYP
MAX
28.0
5.5
6
25
5.50
5.5
4.5
UNITS
V
mA
μA
V
V
V
GH1, GH2, GL1, and GL2 On-Resistance,
Low State
GH1, GH2, GL1, and GL2 On-Resistance,
High State
BST1, BST2 Leakage Current
LX1, LX2 Leakage Current
Minimum On-Time
I TEST = 10mA
I TEST = 10mA
V BST1 = 24V, V LX1 = 19V;
V BST2 = 24V, V LX2 = 19V; V BATT = 28V
V BATT = 28V
V BATT = 8V, R RATE = 190k Ω , R HF = 100k Ω
210
22
3
8
5
5
420
28
Ω
Ω
μA
μA
ns
Duty Cycle
Maximum Duty Cycle
Current-Limit Threshold
V BATT = 16V, R RATE = 190k Ω , R HF = 100k Ω
V BATT = 24V, R RATE = 190k Ω , R HF = 100k Ω
LX1 - PGND, LX2 - PGND
10.8
7.50
370
14.2
9.50
45
430
%
%
mV
4
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