Part Number: TPS75103 Tool/software: We are using the TPS75103 as a LCD backlight driver. We cannot use PWM for brightness control due to design constraints, so the PWM inputs is purely ON or OFF as a DC signal.
To solve the brightness changes, we…
Other Parts Discussed in Thread: TPS75103 Hello,
We are curious why some LDO's could be used to drive LED:
For TPS75103 in the above example, by definition of LDO it is "low-dropout", which means it cannot boost voltages. Then why could Vin(min…
Other Parts Discussed in Thread: TPS62200 , TPS62120 , TPS62110 , TPS75103 , TPS62240 , TPS62260 , TPS61260 Hi
I would like to use the TPS62200 sync buck regulator as a low current LED (the LED only consume 4v@20mA from a 6V battery source) driver…
This LED driver has 4 identical and independent current sinks. Instead of referring to their parameters as ID1A/ID1B/ID2A/ID2B, we simplify it and refer to the parameter for a given channel as IDx--the x means it applies to any of the four channels.
Hello,
The UCC3806 is a dual output controller though it can be used in a flyback where only one of the outputs are used to drive the switch it might be better to choose a single output controller. Look at page 46 of the attached under General Purpose…
Siyu,
I think the toggle flip-flop in the block diagram on page one of the spec should have let you know that the max you will get with this device is 50% duty.
Go to page 43 and 44 of the attached and select a more suitable part.
Peter,
i am enclosing the Power Management Guide for 2011. The section you will be interested in starts on page 43 and actual devices listed on page 46, With the minimum information you have given me I would expect that you will want something like…
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…
