Part Number: LP8552 Hello guys,
One of my customers is considering using LP8552 for their new products.
At this moment, they have the following question. Could you please give me your reply?
Q. What is different point between LP8552TLE-E04/NOPB…
Hi Robin,
In that case we are planning to use LP8552 High-Efficiency LED Backlight Driver .
We have got following requirement specs for the backlight LEDs module:
In day mode, operating voltage and current are typically 28.5V and 50mA. In night…
Part Number: LP8552 Other Parts Discussed in Thread: TPS61177A , LP8556 , TPS61187 Hi,
we want to use LP8552 but we can not be sure of its operating temperature spec. In datasheet there writes -30C to +85C at section 7.3 but -40C to +85C at packaging…
Part Number: LP8552 Hi team,
My customer want to use LP8552 in their project to drive 3 string * 3LED per string, the output voltage is about 10V, 80mA current/string. LP8552 should be configured as Figure 32 in datasheet.
1.with 10V/240mA output…
Other Parts Discussed in Thread: LP8552 Hi, My customer has question about LP8552. Could you help us?
Q: How much is maximum value of minimum PWM pulse on-time at the over temperature range? *typical value is 1usec.
Best Regards,
tateo
Part Number: LP8553 Other Parts Discussed in Thread: LP8552 , LP8556 Hi TI,
I have multiple applications are possible to use this LP8553, which have 1, 2 and 4 channels.
So do you have a recommendation how to assign the channels?
Refer to your first…
Hello Sean-san,
There are additional question about LP8556.
SDA & SCL lines are connected to the 3.3V line a pull-up resistor and remain HIGH during writing.
Although when not in use I2C, 'there lines connect to GND', is it OK to pull up to 3.3V…
Hi Shimizu,
Yes, you are correct. My bad, I was thinking LP8552.
Anyway for 3 channel operation they should use LP8552 instead and connect it the way I described earlier. If they use LP8553 and leave one string floating, it will cause LED fault. Also…
Hi,
I've attached the 2013 User's Guide for power products. Starting on page 53 you will find a selection of PWM controllers. many of these teh frequency can be varied according to external criteria.
As an example if you use a UC3842 it is a simple…
Gary,
Most any of our power controllers with dual output capability will provide the control. See attached document starting at page 50 with the dual output controllers on page 53 and 54 and choose what features you want.
Regards,
John
