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| 型号： | MAX8574EUT+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 9/11页 |
| 文件大小： | 0K |
| 描述： | IC CONV LCD BOOST SOT23-6 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 应用： | 转换器，LCD |
| 输入电压： | 2.7 V ~ 5.5 V |
| 输出数： | 1 |
| 输出电压： | 2.7 V ~ 28 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-23-6 |
| 供应商设备封装： | SOT-6 |
| 包装： | 带卷 (TR) |
High-Efficiency LCD Boost
with True Shutdown
For the MAX8570/MAX8571/MAX8574 a feed-forward
capacitor (C4 in Figures 2 and 4) connected from the
output to FB improves stability over a wide range of
battery voltages. A 10pF capacitor is recommended for
the MAX8571 and MAX8574. A 10pF to 47pF capacitor
is recommended for the MAX8570. Note that increasing
C4 degrades line and load regulation.
Applications Information
Negative Output Voltage for LCD Bias
A negative output voltage can be generated by adding
a diode/capacitor charge pump as shown in Figure 5. In
this configuration, the negative output is lower in magni-
tude than the positive output by a forward diode drop. If
there is little or no load on the positive output, the nega-
tive output drifts from its nominal voltage. To prevent
this, it may be necessary to preload the positive output
with a few hundred microamps, which can be done by
selecting lower than normal values of R1 and R2.
PC Board Layout
Careful printed circuit layout is important for minimizing
ground bounce and noise. Keep the GND pin and
ground pads for the input and output capacitors as
close together as possible. Keep the connection to LX
as short as possible. Locate the feedback resistors as
close as possible to the FB pin and keep the feedback
traces routed away from noisy areas such as LX. Refer
to the MAX8571EVKIT for a layout example.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX8575EUT | 制造商:Maxim Integrated Products 功能描述:HIGH-EFFICIENCY 15V LCD STEP-UP DC- - Rail/Tube |
| MAX8575EUT+ | 制造商:Maxim Integrated Products 功能描述:LCD DRVR 2.7V TO 5.5V 6PIN SOT-23 - Rail/Tube |
| MAX8575EUT+T | 功能描述:LCD 驱动器 High-Efficiency LCD Boost RoHS:否 制造商:Maxim Integrated 数位数量:4.5 片段数量:30 最大时钟频率:19 KHz 工作电源电压:3 V to 3.6 V 最大工作温度:+ 85 C 最小工作温度:- 20 C 封装 / 箱体:PDIP-40 封装:Tube |
| MAX8575EUT-T | 功能描述:LCD 驱动器 High-Efficiency LCD Boost RoHS:否 制造商:Maxim Integrated 数位数量:4.5 片段数量:30 最大时钟频率:19 KHz 工作电源电压:3 V to 3.6 V 最大工作温度:+ 85 C 最小工作温度:- 20 C 封装 / 箱体:PDIP-40 封装:Tube |
| MAX8576EUB | 功能描述:DC/DC 开关控制器 RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
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