Other Parts Discussed in Thread: TPS61500,
Im using a tps61500 part for another application
I see the TPS61169 part for a new design but am really unclear what the total current dissipation can be. Datasheet says look at a thermal table but its cryptic
application is a single lipoly 3.7vdc min 2400mA 1C discharge cell
want to drive up to 9 LEDs with max Vf of 2.7vdc at up to 400mA
constant - CW --- no dimming needed at all (i see the min duty says 1% but we wont have any externally fed PWM signal.)
environment is ambient 25C
driving a single string below the stated 1.2A I minimum limit where i have close to 10 watts- in this string--is this possible with this internal FET because i dont see any thermal pad on the bottom side.
there is also a note that internal thermal derating of Iout occurs at 100C
I must be missing something here.
is there maybe another part with integrated FET drive that can work better?