Hi Hiroaki,
The document is the latest that I have, if there is mismatch with your board, you may need to identify the connection. The mark on picture shows the "PWM" and "GND" connection is right.
LP8556 only has EPROM inside which can be only written…
Hi Yihung,
No we don't suggest to do this, since the control loop is not very fast, it is not suitable to adopt this way for direct PWM dimming. You can check our LP8556/ TPS61177A/ TPS61187 which can support direct PWM dimming.
Regards
Sean
Hi Chin,
You can try with TPS61177A / TPS61187 / LP8556 since it can change the switching frequency, it may help to achieve better efficiency.
Regards
Sean
Hi Serkan,
It may cause some parametrs not very stable or can't meet the specs on datasheet. But you can refer to LP8556 or TPS61177A/TPS61187 for choice.
Regards
Sean
Hi Shinsuke,
For TPS61196, we recommend to adjust the maximum current pre channel from 50mA to 400mA. Because we can confirm very good accuracy and match within this range. For your application, I suggest you to set the maximum current to 50mA per channel…
Hi Bogey,
You can try with TPS61177A/TPS61187/LP8556 since it can change the switching frequency, it may help to achieve better efficiency.
Can you share us what's the detail application? What's the efficiency now? And what's the target efficiency…
Part Number: LM36274 Other Parts Discussed in Thread: TPS61176 , LP8556 , Hi,
we are looking into LM32674 and other chips to drive WLEDs with up to 50mA.
We have 2 or 3 LED-strings consisting of 4 to 6 WLEDs, each.
They shall independently be…
Part Number: LM36922 Hi,
We are seeking schematic design review for the following schematic design of LM36922 which contains in the Custom board.
This post is continuation with this post: https://e2e.ti.com/support/power-management-group/power-management…
Terry,
Yes, all versions of LP8556 have a i2c slave function. The LP8556 has an EPROM to store its default configuration. Table 1 shows different ordering numbers for different default EPROM configurations. Some configurations have the brightness control…
