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LED Driver as adjustable current source IC recommendation

Hello,

I'm looking into LED Driver to act as a adjustable current source to drive my resistive load.

Can you recommend some ICs which can achieve my requirements please:

1. Load 1: buck-boost configuration

  • R = 6,5Ohm
  • I = 2,5A

2. Load 2: boost configuration

  • R = 400Ohm
  • I = 250mA

Input: +12V

Input control signal: DAC output 0..2,5V

Thank you very much in advance.