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bq24133不充电的问题--锂电池与充电器对后续电路供电没问题,NTC检测也没有问题,但是充电电流只有几mA



采用3节3.7V锂电池串联,10K NTC电阻,充电器使用12V、2A。单独插电池不插入充电器时STAT脚指示灯不亮;单独插充电器、电池没插入时STAT脚指示灯闪烁;充电器、电池都插入时STAT脚指示灯常亮,但检测到的充电电流才几mA,检测各脚的电压值如下:

1

SW

10.68V

 

4

AVCC

11.62V

 

6

ACP

12.46V

 

7

CMSRC

12.42V

 

8

ACDRV

17.6V

 

9

STAT

0(常亮)

 

10

TS

1.83V

 

11

TTC

1.25V

 

13

ISET

0.46

 

16

SRP

11.02V

 

17

ACSET

0.82V

 

18

OVPSET

1.06V

 

20

REGN

6.04V

 

21

BTST

15.34V

 

电路图如下:

请问是哪里出了问题?