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参数资料
| 型号： | MAX8784ETL+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 2/24页 |
| 文件大小： | 0K |
| 描述： | IC REG STP UP W/AMP 40-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 应用： | LCD 电视机/监控器 |
| 电源电压： | 4 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 40-WFQFN 裸露焊盘 |
| 供应商设备封装： | 40-TQFN-EP（5x5） |
| 包装： | 带卷 (TR) |
Step-Up Regulator, Internal Charge Pumps, Switch
Control, and Operational Amplifier for TFT LCDs
ABSOLUTE MAXIMUM RATINGS
V CC , CTL, HVS, SHDN , ADEL, GDEL to AGND ....-0.3V to +7.5V
REF, COMP, FB, FBN, FBP to AGND .........-0.3V to (V CC + 0.3V)
POS1, NEG1, POS2, NEG2, POS3, OUT1, OUT2,
OUT3 to AGND .......................................-0.3V to (V SUP + 0.3)
PGND, BGND to AGND.........................................-0.3V to +0.3V
LX, RSET to PGND .................................................-0.3V to +22V
SUP to AGND .........................................................-0.3V to +22V
DRVN to AGND.........................................-0.3V to (V SUP + 0.3V)
C1N, C2N to AGND ..................................-0.3V to (V SUP + 0.3V)
C1P to AGND .........................................................-0.3V to +30V
POUT to C2P, C1P to C2P......................................-0.3V to +22V
C2P, POUT to AGND..............................................-0.3V to +40V
DRN to GON............................................................-30V to +30V
REF Short Circuit to AGND.........................................Continuous
RMS V CC Current ................................................................50mA
RMS DRVN Current...........................................................400mA
LX, PGND RMS Current Rating.............................................2.4A
Continuous Power Dissipation (T A = +70°C)
40-Pin TQFN (derate 35.7mW/°C above +70°C) .......2857mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) .......................................+260°C
GON, DRN to AGND ..............................................-0.3V to +40V
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V CC = +5V, Circuit of Figure 1, AVDD = SUP = +14V, T A = 0°C to +85°C . Typical values are at T A = +25°C, unless otherwise noted.)
PARAMETER
V CC Input Supply Range
V CC Undervoltage Lockout Threshold
CONDITIONS
V CC rising, typical hysteresis = 50mV
MIN
4.0
2.4
TYP
2.6
MAX
5.5
2.8
UNITS
V
V
V FB = 1.3V, not switching
1.0
V CC Quiescent Current
V FB = 1.1V, switching, no load, V SUP disconnected,
V FBP = V CC , V FBN = 0V
4
6
mA
SHDN = GND
0.05
SHDN Input Low Voltage
SHDN Input High Voltage
1.8
0.8
V
V
SHDN Input Current
-1
+1
μA
REFERENCE
REF Output Voltage
No external load
1.238
1.250
1.262
V
REF Load Regulation
REF Sink Current
0 < I LOAD < 50μA
In regulation
10
10
mV
μA
REF Undervoltage Lockout Threshold
Rising edge, typical hysteresis = 200mV
1.0
1.15
V
OSCILLATOR AND TIMING
Frequency
Oscillator Maximum Duty Cycle
Duration to Trigger Fault Condition
ADEL, GDEL Capacitor Charge Current
ADEL, GDEL Turn-On Threshold
1000
87
47
4
1200
90
55
5
1.25
1400
93
65
6
1.32
kHz
%
ms
μA
V
STEP-UP REGULATOR
FB Regulation Voltage
FB Fault-Trip Level
FB Load Regulation
FB Line Regulation
FB Input Bias Current
FB = COMP, C COMP = 1nF
FB = COMP, C COMP = 1nF, +25°C to +85°C
Falling edge
0 < I LOAD < full
V CC = 4.5V to 5.5V
V FB = 1.25V
1.235
1.238
0.96
1.246
1.246
1.00
-1
0.25
100
1.256
1.256
1.04
200
V
V
%
%/V
nA
2
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