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Maxim > 方案 > 仪表盘

TFT偏置

设计挑战:有源矩阵薄膜晶体管(TFT)液晶显示器要求一组特殊的供电电源和适当的上电顺序,其中包括VCOM缓冲器和gamma修正电路的供电电源。

数据资料
显示 标题/型号 关键优势
QV  PDF 五/三输出TFT LCD电源,带有故障保护及VCOM缓冲器
MAX1997, MAX1998

5路/3路输出、TFT LCD供电电源,带有故障保护和VCOM缓冲
QV  PDF 四路输出、TFT LCD DC-DC转换器,带有缓冲器
MAX1778, MAX1880, MAX1881, MAX1882, MAX1883, MAX1884, MAX1885




Key Specifications:  Multifunction PMICs
Part Number Primary Topology Monitor/Control Features DC-DC/Power Features LCD/LED/Flash/CCD Features VIN
(V)
VIN
(V)
VOUT
(V)
VOUT
(V)
Max. IOUT
(A)
Max. IOUT
(A)
Oper. Freq.
(kHz)
Package/Pins Smallest Available Pckg.
(mm2)
min max min max max w/pins
MAX1997  Step-Up
Output UVP
Reset Output
Shutdown
Adj. Frequency
Current Limit
Fixed Freq./PWM
Internal Pwr. FETs
Soft Start
TFT Bias
VCOM Buffer
2.7 5.5 2.7 13 0.3 0.3 1500
TQFN/32
26
MAX1998 
Output UVP
Reset Output
Shutdown
Adj. Frequency
Current Limit
Internal Pwr. FETs
Soft Start
TFT Bias 0.3 0.3 1500
TQFN/20
26
MAX1778  Shutdown
Current Limit
Fixed Freq./PWM
Internal Pwr. FETs
Soft Start
TFT Bias
VCOM Buffer
0.75 0.75 1000
TSSOP/24
52.4
MAX1880  Shutdown
Current Limit
Fixed Freq./PWM
Internal Pwr. FETs
Soft Start
TFT Bias
VCOM Buffer
0.75 0.75 1000
TSSOP/24
52.4
MAX1881  Shutdown
Current Limit
Fixed Freq./PWM
Internal Pwr. FETs
Soft Start
TFT Bias
VCOM Buffer
0.75 0.75 500
TSSOP/24
52.4
MAX1882  Shutdown
Current Limit
Fixed Freq./PWM
Internal Pwr. FETs
Soft Start
TFT Bias
VCOM Buffer
0.75 0.75 500
TSSOP/24
52.4
MAX1883  Shutdown
Current Limit
Fixed Freq./PWM
Internal Pwr. FETs
Soft Start
TFT Bias
VCOM Buffer
0.75 0.75 1000
TSSOP/20
45.2
MAX1884  Shutdown
Current Limit
Fixed Freq./PWM
Internal Pwr. FETs
Soft Start
TFT Bias
VCOM Buffer
0.75 0.75 500
TSSOP/20
45.2
MAX1885  Shutdown
Current Limit
Fixed Freq./PWM
Internal Pwr. FETs
Soft Start
TFT Bias
VCOM Buffer
0.75 0.75 500
TSSOP/20
45.2
See All Multifunction PMICs (83)



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