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参数资料
| 型号： | MAX8795AETJ+C7P |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 2/31页 |
| 文件大小： | 0K |
| 描述： | IC TFT-LCD DC/DC CONV 32-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 60 |
| 应用： | 转换器，TFT，LCD |
| 输入电压： | 2.5 V ~ 6 V |
| 输出数： | 8 |
| 输出电压： | 2.5 V ~ 18 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-WFQFN 裸露焊盘 |
| 供应商设备封装： | 32-TQFN-EP（5x5） |
| 包装： | 管件 |
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TFT-LCD DC-DC Converter with
Operational Amplifiers
ABSOLUTE MAXIMUM RATINGS
IN, CTL to AGND ...................................................-0.3V to +7.5V
COMP, FB, FBP, FBN, DEL, REF to AGND ....-0.3V to (V IN + 0.3V)
PGND, BGND to AGND ......................................................±0.3V
LX to PGND ............................................................-0.3V to +20V
SUP to AGND .........................................................-0.3V to +20V
DRVP to AGND.......................................................-0.3V to +36V
POS_, NEG_, OUT_ to AGND ...................-0.3V to (V SUP + 0.3V)
DRVN to AGND ...................................(V IN - 30V) to (V IN + 0.3V)
SRC to AGND .........................................................-0.3V to +40V
COM, DRN to AGND ................................-0.3V to (V SRC + 0.3V)
DRN to COM............................................................-30V to +30V
OUT_ Maximum Continuous Output Current....................±75mA
LX Switch Maximum Continuous RMS Current .....................1.6A
Continuous Power Dissipation (T A = +70°C)
32-Pin Thin QFN (derate 34.5mW/°C above +70°C) 2758mW
32-Pin LQFP (derate 48.4mW/°C above +70°C)....1652.9mW
Operating Temperature Range, E Grade ............-40°C to +85°C
Operating Temperature Range, G Grade .........-40°C to +105°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) .......................................+260°C
POS_ to NEG_ RMS Current ...................................5mA (Note 1)
Note 1: See Figure 2 for the op amp clamp structure.
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 IN = 3V, V MAIN = V SUP = 14V, V PGND = V AGND = V BGND = 0V, I REF = 25μA, T A = 0°C to +85°C . Typical values are at T A = +25°C,
unless otherwise noted.)
PARAMETER
IN Supply Range
IN Undervoltage-Lockout
Threshold
SYMBOL
V IN
V UVLO
CONDITIONS
(Note 2)
V IN rising, typical hysteresis = 50mV
MIN
2.5
2.05
TYP
2.25
MAX
6.0
2.45
UNITS
V
V
V FB = V FBP = 1.3V, V FBN = 0V,
LX not switching
0.6
1.0
IN Quiescent Current
Duration-to-Trigger Fault
Condition
I IN
V FB = 1.2V, V FBP = 1.4V, V FBN = 0V,
LX switching
FB or FBP below threshold or FBN above
threshold
2
200
3
mA
ms
REF Output Voltage
No external load
T A = +25 ° C to +85 ° C
T A = 0 ° C to +85 ° C
1.238
1.232
1.250
1.250
1.262
1.266
V
REF Load Regulation
REF Sink Current
REF Undervoltage Lockout
Threshold
Thermal Shutdown
0 < I LOAD < 50μA
In regulation
Rising edge; typical hysteresis = 160mV
Temperature rising
Hysteresis
10
+160
15
10
1.15
mV
μA
V
° C
MAIN STEP-UP REGULATOR
Output Voltage Range
V MAIN
V IN
18
V
Operating Frequency
Oscillator Maximum Duty Cycle
f OSC
1000
86
1200
90
1400
93
kHz
%
FB Regulation Voltage
FB Fault Trip Level
V FB
No load
V FB falling
T A = +25 ° C to +85 ° C
T A = 0 ° C to +85 ° C
1.221
1.212
1.10
1.233
1.233
1.14
1.245
1.248
1.17
V
V
FB Load Regulation
0 < I MAIN < full load, transient only
-1
%
FB Line Regulation
FB Input Bias Current
V IN = 2.5V to 6V
V FB = 1.233V
0.1
+100
± 0.4
+200
%/ V
nA
2
_______________________________________________________________________________________
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