Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Question on LED Current and voltage

Status
Not open for further replies.

FreshmanNewbie

Advanced Member level 1
Joined
May 10, 2020
Messages
403
Helped
0
Reputation
0
Reaction score
3
Trophy points
18
Activity points
4,016
This is regarding this battery charger IC

In the below image, the output low voltage on the STATx pin is given as 1V. But that is for 4mA of sink current. Which translates to around 0.25ohm of internal resistance/impedance.

enter image description here

If the LED's forward current (LEDs connected to the STAT pins) is higher than the 4mA, then subsequently, the maximum output voltage on the STAT pins, would increase? How high can the output voltage go or be? Just want to understand how this works if the LED current is higher.

Please clarify
 

The word sink implies current flows into the pin. Indeed page 2 has a schematic showing pins 6-7-8 with led's connected, oriented with their other end connected to a positive supply.
Each has a 470 ohm resistor inline so it limits current going into the IC.
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top