Because of the holidays, TI E2E™ design support forum responses will be delayed from Dec. 25 through Jan. 2. Thank you for your patience.

  • State TI Thinks Resolved
  • Locked Locked
  • Replies 2 replies
  • Answers 1 answer
  • Subscribers 64 subscribers
  • Views 1846 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

BQ24070: BQ24070 BAT no output

WU YISYUAN
Expert 2165 points
Part Number: BQ24070

Hi,

    I have a question in apply BQ24070,Vin=5V, when start up,the out PIN = 4.4V, but BAT pin=0.6V(Equivalent to no output),

   I find IN pin have a pulse current about 3.8A at start up(the waveform as below). So I think that BAT pin no output is cause by pulse current.

  because the current over the BAT pin max rating.

   Or have other explanation? Thanks.

SCH

Reduce C4,C5 caps from 220uF *2 to 22uF*1.

Ch1:+5V Vout, Ch2: 12V, Ch3:+5V Io.