Electronic Components Datasheet Search |
|
MAX8574EUT Datasheet(PDF) 9 Page - Maxim Integrated Products |
|
MAX8574EUT Datasheet(HTML) 9 Page - Maxim Integrated Products |
9 / 10 page 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 |
Similar Part No. - MAX8574EUT |
|
Similar Description - MAX8574EUT |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |