Hi,
Iam using LM32674 EVM. I am seeing glitches in the LED current as well as inductor current. Please see waveforms below.
The setup is : VIN = 3.7V, 3P5S congif, duty cycle of PWM = 6%, rise/fall time = 5ns, Freq = 10kHz
The problem is threre for 6…
Hi Gerald,
We can only guarantee specs listed on datasheet. Your question 1-3 all need info which datasheet doesn't have. So I want to do some bench test first to give you a reference result. But unfortunately, we didn't design EVM for LM27951 previously…
hi ameenu
We have limited backlight devices supporting input voltage low to 1.8V, only TPS61042, TPS61043, but have no I2C control. For input voltage higher, Lm36922, lm36274 can be options.
Hi Sir,
I'm sorry that we only have the typical spec.
What's the application? and how about your target match performance.
You can check LP8556/TPS61177A and LM36274 which has better match performance.
Regards
Sean
Part Number: TPS65132 Other Parts Discussed in Thread: LM36274 Hi sir,
My customer asking about roadmap.
Is there Roadmap about TPS65132 (I2C)/LM36274 (I2C) series driver? Does Iout ability go higher on new chip?
Thanks, Ian.
Part Number: LM36923H Other Parts Discussed in Thread: LM36274 , TPS61042 Quick question concerning the LM36923H and LM36274 modes of operational:
Is there a way to preprogram a current for every LED out
Can you separately turn ON/OFF every LED out at…
Hi Sakai-san,
Your concern about headroom voltage is right. In normal operation, the lower one of these two IFBx is regulated to 90mV, so this is too low for NMOSFET. As in your application, I would suggest use LM36274, which is 4 channels of 30mA, supporting…
Hi Lanjie,
Thanks for choosing TPS6116X, Those devices' output current tolerance depends on the FB accuracy and the current sensor resistor accuracy. The typical FB accuracy is 2%, so it's a little difficult to warrant it's accuracy under different…