I'm about to build a batch of power supplies for internal workshop use (current/voltage regulated for a bunch of stepper motors).
I've got a couple of tubes of LT1074 and a big box of brand new 100uH inductors (8 amp).
The datasheet shows that a 50uH should be used for the LT1074 and 100uH for the LT1076 but as I have the 100uH in abundance it seems a shame not to use them.
Any ideas ? I've got a fantastic datasheet/writeup from Linear Technology which basically says:
Choosing an inductor .....
Weigh it
Look at it
Measure the resistance
Toss a coin
Use it if all above within parameters
I'm not worried if I lose a couple of % efficiency or don't use the 100uH to its full capacity but it will sure beat trying to drop a 30V DC supply down to 2.5 volts at 4 amps in a linear fashion.
I've got a couple of tubes of LT1074 and a big box of brand new 100uH inductors (8 amp).
The datasheet shows that a 50uH should be used for the LT1074 and 100uH for the LT1076 but as I have the 100uH in abundance it seems a shame not to use them.
Any ideas ? I've got a fantastic datasheet/writeup from Linear Technology which basically says:
Choosing an inductor .....
Weigh it
Look at it
Measure the resistance
Toss a coin
Use it if all above within parameters
I'm not worried if I lose a couple of % efficiency or don't use the 100uH to its full capacity but it will sure beat trying to drop a 30V DC supply down to 2.5 volts at 4 amps in a linear fashion.