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參數(shù)資料
| 型號(hào)： | MAX8572EUT-T |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類(lèi)： | 穩(wěn)壓器 |
| 英文描述： | High-Efficiency LCD Boost with True Shutdown |
| 中文描述： | 0.6 A SWITCHING REGULATOR, 800 kHz SWITCHING FREQ-MAX, PDSO6 |
| 封裝： | MO178AB, SOT-23, 6 PIN |
| 文件頁(yè)數(shù)： | 9/10頁(yè) |
| 文件大小： | 654K |
| 代理商： | MAX8572EUT-T |
M
High-Efficiency LCD Boost
with True Shutdown
_______________________________________________________________________________________
9
For the MAX8570/MAX8571/MAX8574 a feed-forward
capacitor (C4 in Figures 2 and 3) 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.
Chip Information
TRANSISTOR COUNT: 742
PROCESS: BiCMOS
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX8573 | High-Efficiency LCD Boost with True Shutdown |
| MAX8573EUT | High-Efficiency LCD Boost with True Shutdown |
| MAX8573EUT-T | High-Efficiency LCD Boost with True Shutdown |
| MAX8574 | High-Efficiency LCD Boost with True Shutdown |
| MAX8574EUT | High-Efficiency LCD Boost with True Shutdown |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX8573EUT | 制造商:Maxim Integrated Products 功能描述:HIGH-EFFICIENCY 15V LCD STEP-UP DC- - Rail/Tube |
| MAX8573EUT+ | 制造商:Maxim Integrated Products 功能描述:LCD DRVR 2.7V TO 5.5V 6PIN SOT-23 - Rail/Tube |
| MAX8573EUT+T | 功能描述:LCD 驅(qū)動(dòng)器 High-Efficiency LCD Boost RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時(shí)鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube |
| MAX8573EUT-T | 功能描述:LCD 驅(qū)動(dòng)器 High-Efficiency LCD Boost RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時(shí)鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube |
| MAX8574EUT | 制造商:Maxim Integrated Products 功能描述:HI-EFFICIENCY 15V LCD STEP-UP DC-DC - Cut Tape Product |
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