Part Number: LP8556 Hi Team,
I believe EPROM registers (98h, 9Eh, A0h-AFh) can be written only when backlight is disabled. Is my understanding correct?
If the answer is yes, should I set both BL_CTL(01h, bit 0)=0 and BL_ON(A2h, bit 3)=0 before writing…
Part Number: LP8556 Hi Team, I believe EPROM registers (98h, 9Eh, A0h-AFh) can be written only when backlight is disabled. Is my understanding correct? If the answer is yes, should I set both BL_CTL(01h, bit 0)=0 and BL_ON(A2h, bit 3)=0 before writing…
Part Number: LP8556 Hi Team, The datasheet shows the following block diagram. What is the feature of "active load" (red part) block? The datasheet doesn't show the feature, so I would like to ask. Best Regards, Yaita / Japan disty
Part Number: LP8556 Hi Team, The datasheet shows no specification of leakage current of VBOOST pin. Is it possible case VBOOST leakage current shows up to 600uA when VBOOST is around 20V? It is helpful if you have any data about it or internal schematic…
Part Number: LP8556 Hello
The Layer costs for bga are coming too high. We prefer qfn therefor.
Furthermore we need:
I2C
4 LED per String (10mA)
4 Strings
Unfortuntately the spec is not detailing these requirements in ONE item.
Or is there…
Part Number: LP8556 Dear Experts,
Why is non-programmed version of LP8556(LP8556TMX-E05/NOPB) recommended only for evaluation purposes? I can't figure out why it could not be used in final design.
Rgds,
Juha
Part Number: LP8556 Hi Team, I think the following "LED_HEADROOM bits" is typo. I believe "DRIVER_HEADROOM bits" is correct. Is my understanding correct? Best Regards, Yaita / Japan disty
Part Number: LP8556 Hi Team, Could you tell me detail condition of the following "STANDBY mode"? I believe it is the condition of supplying the VDD and EN/VDDIO pins but backlight is disabled (ON register bit low [BRTMODE = 0 1, 10, 11] or PWM input is…
Part Number: LP8556 When configuring the VBOOST value in adaptive boost mode, does this value include any headroom? For example, if I set the VBOOST for 30V, does this represent the initial voltage across the LEDs, such that the actual boost voltage relative…
Part Number: LP8556
Hi Team, I understood PWM dimming frequency can be set by PWM_FREQ [3:0] or RFSET [kΩ]. Is there any tricks to decide PWM dimming frequency [Hz]? I believe it is better to keep out audible field.. May I have your advice? Best Regards…
