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Part Number: LP8868Z-Q1 Other Parts Discussed in Thread: TPS922055DMTREVM Tool/software: Hi Teams,
The customer plans to evaluate LP8868Z-Q1 and TPS922055DMTR. Can you provide the efficiency of the IC at 12V input and 1.35A output? The customer will…
Part Number: LP8868Z-Q1 Tool/software: At the bottom of section 8.2.3.2.1 last paragraph it states "ILED = 2A, consider the efficiency as 0.9" and lists the Inductor Current Max of 0.741A
Where and how did we come up with this value of 0.741Amps…
Part Number: LP8868Z-Q1 Tool/software: Hi Teams,
Can you help review the customer's schematic and layout? Their project is quite urgent and they need to invest in PCBA
thank you
BR LP8868ZQDMTRQ1.pdf DMSIR_P0_17Mar2025A.pdf
Part Number: LP8868Z-Q1 Tool/software: Hi Zhqian,
Customer found some strange operating when VIN voltage is going up.
Please check it out and explain it if it is not normal operation.
VCSEL 1EA (@ On Time 2ms, ILED=4A )
current ( Green) and SW (Red…
Part Number: LP8868Z-Q1 Tool/software: My purpose is to reserve the UVP pin float and still detect the LED open load and short circuit. Is it possible?
After I measured，When the UVP pin is in the float state, the Fault can still detect the LED open state…
Part Number: LP8868Z-Q1 Tool/software: Hi Zhiqian,
Please review the schematic with single Vcsel LED.
Samsung changed from dual IR LED to single Vcsel LED due to single LED open protection.
They need to make sure C12 for and R2 & R3 value for OVP.…
Part Number: LP8868Z-Q1 Tool/software: What are the requirements for Ruvp1 and Ruvp2？Can I use Ruvp1=200Kohm and Ruvp2=1Mohm？
If the internal LDO drives the UVP pin, the Ruvp2=1Mohm resistance is selected, 5V/1MΩ=5uA>1uA is satisfied leakage current…
Part Number: LP8868Z-Q1 Tool/software: Hi
We are looking to use LP8868Z/W in a LED lamp application.
We are driving two high brightness LEDs from a 2S or 3S Lithium battery pack.
The cell voltage for the 2S pack will be about 6V in a close to discharged…
Part Number: TPS54201 Other Parts Discussed in Thread: LP8868Z-Q1 Hi team,
Do we have similar device with Q-grade? I can't find the Q-grade with Illumination LED drivers at ti.com.
BR,
Jimmy
