TPS61020 LDO LED

Linh Dang74

Other Parts Discussed in Thread: TPS61020

Hi. I have a 3V3 output on my TPS61020. What would be the best way to include a simple LED on the LDO? I have LDI set at 2V trigger.

over 9 years ago

0 Jasper Li over 9 years ago

TI__Mastermind 46905 points

sorry, but don't understand your meaning. what LDO you refer, and what is LDI mean. could you draw a picture to show what you want to achieve?

0 Linh Dang74 over 9 years ago in reply to Jasper Li

Prodigy 60 points

LDI and LDO are for "Low Battery Detector" pins on TPS61020. You set a threshold voltage on LDI pin using a resistive divider. When the LDI threshold is triggers, the LDO open-drain output goes active low.

0 Jasper Li over 9 years ago in reply to Linh Dang74

TI__Mastermind 46905 points

they are LBI and LBO. I think you should use LBO to drive the NPN/PNP, or a MOSFET. then the NPN/PNP, or MOSFET to drive a LED. the current through the LBO should be lower than 100uA.

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TPS61020 LDO LED