Pages: 1 2 3 [4]   Go Down
Author Topic: SMD MOSFET to power down my SMD H-Bridge  (Read 5172 times)
0 Members and 1 Guest are viewing this topic.
United Kingdom
Offline Offline
Tesla Member
***
Karma: 227
Posts: 6639
Hofstadter's Law: It always takes longer than you expect, even when you take into account Hofstadter's Law.
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

Sorry, I've never worked with OLED displays. However, as its current consumption is so high, you can't safely drive it from an Arduino pin. Use another P-channel mosfet, although this time you can switch it directly from the Arduino instead of using an additional transistor for level shifting.

PS - don't from the data you posted, looks like the oled display is a 3.3V device, So you'll be switching 3.3V to it, not 5V. The I2C pullup resistors should be connected to the Vcc pin of the display.
« Last Edit: July 09, 2013, 02:29:27 am by dc42 » Logged

Formal verification of safety-critical software, software development, and electronic design and prototyping. See http://www.eschertech.com. Please do not ask for unpaid help via PM, use the forum.

Pages: 1 2 3 [4]   Go Up
Jump to: