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LM36923H: mode of operation for pre-programming current

Josh%20Mandich
Intellectual 1155 points
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 any moment with preprogrammed current
  • Can I  not  connect and not use the LCM driver for the LM36274

from a control perspective, the desire is to control this with I2C.

If there is a better part to recommend for the above objectives, see design parameters:

VIN range: 2V-3V

Vout: 6.5V max – single UV LED (per channel)

Iout: 50mA max per channel

  • 0
    TI__Mastermind 22745 points
    Hi Josh,
    (1). No, LM36923H/Lm36274 use the global current control, you can't control each current seperately;
    (2).No,as upon reason.
    (3).Yes, you can just use the backlight boost part and leave the LCM alone;
    How may channels that you need, I want to know the LED configuration. TPS61042 maybe a good choice.
    Regards
    Sean