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参数资料
| 型号： | MAX8784ETL+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 18/24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： | 60 |
| 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： | 管件 |
Step-Up Regulator, Internal Charge Pumps, Switch
Control, and Operational Amplifier for TFT LCDs
HVS Mode
HVS mode is designed as a special operating mode for
end-of-line panel testing. In HVS mode, higher than
normal voltages are forced to the power-supply outputs
to expose faults in the LCD panel. HVS pin is forced
logic-high to enable HVS mode. In HVS mode opera-
tion, FBP is ignored and the positive charge-pump reg-
ulates to a fixed-output voltage of 30V. To raise the
step-up regulator output voltage in HVS operation, the
open-drain RSET pin is pulled to GND. In Figure 1, resis-
tor R8 becomes parallel to R10, which reduces the feed-
back resistance during HVS operation. This special
feature allows the customer to select a resistor that sets
an appropriate HVS voltage according to the panel
requirements. The negative charge pump operates nor-
mally. Figure 7 shows the typical application circuit in
HVS mode.
VIN = 5V
10 μ F
10 μ F
3 μ H
10 μ F
10 μ F
AVDD
17V, 0.65A
V CC
LX
1 μ F
POS1
PGND
205k ?
AVDD
VCOM
NEG1
OUT1
POS2
FB
COMP
20k ?
10k ? VCOM
NEG2
OUT2
100k ?
330pF
POS3
10k ?
VCOM
OUT3
RSET
82k ?
RSET = LOW
GDEL
VIN
HVS
MAX8784
ADEL
0.01 μ F
0.1 μ F
REF
0.22 μ F
11k ?
AGND
FBN
CTL
SHDN
GON
FROM TCON
FROM SYSTEM
VGON
30V, 20mA
VGOFF
-9V, 20mA
10 μ F
102k ?
C4
1 μ F
DRVN
PGND
DRN
POUT
FBP
V POUT = 30V
432k ?
FBP IGNORED
1 μ F
AVDD
SUP
C1N
C1P C2N
C2P
20k ?
Figure 7. HVS Mode Operation
AVDD
0.1 μ F 0.1 μ F
0.1 μ F
18
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| MAX8784ETL+ | 功能描述:显示驱动器和控制器 Reg, CP, Op Amp for TFT LCDs RoHS:否 制造商:Panasonic Electronic Components 工作电源电压:2.7 V to 5.5 V 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:QFN-44 封装:Reel |
| MAX8784ETL+T | 功能描述:显示驱动器和控制器 Reg, CP, Op Amp for TFT LCDs RoHS:否 制造商:Panasonic Electronic Components 工作电源电压:2.7 V to 5.5 V 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:QFN-44 封装:Reel |
| MAX8784EVKIT+ | 功能描述:显示开发工具 MAX8784 Eval Kit RoHS:否 制造商:4D Systems 产品:4Display Shields 工具用于评估:?OLED-160-G1, ?OLED-160-G2 接口类型:Serial 工作电源电压:5 V |
| MAX8785AETI+ | 功能描述:显示驱动器和控制器 Full-Bridge CCFL Controller RoHS:否 制造商:Panasonic Electronic Components 工作电源电压:2.7 V to 5.5 V 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:QFN-44 封装:Reel |
| MAX8785AETI+T | 功能描述:显示驱动器和控制器 Full-Bridge CCFL Controller RoHS:否 制造商:Panasonic Electronic Components 工作电源电压:2.7 V to 5.5 V 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:QFN-44 封装:Reel |
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