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BQ24133充不了电 ,锂电池与直流电源切换没问题 电路图参照datasheet中两芯连接电路。由于实际中是用到三芯的电池,所以做相应的更改。

Other Parts Discussed in Thread: BQ24133

锂电池:11.1V(3.7*3) 2200mAh.

输入电压直流源是12V,1.5-2A电流。

测量的各引脚的电压如下

1

SW

0.808V

 不正常?

4

AVCC

11.25V

 OK

6

ACP

11.89V

 OK

7

CMSRC

11.85V

 OK

8

ACDRV

18V

 ??

9

STAT

0.137-3.2 (闪烁)

 ??

10

TS

2.65V

 

11

TTC

1.248V

 

13

ISET

0.46

 OK

16

SRP

0.808V

 

17

ACSET

0.816V

 OK

18

OVPSET

1.371V

 OK

20

REGN

5.98V

OK 

21

BTST

5.41V

 

 

电池充不了电,问题出在哪?