Hi, The circuit is as the attached image. i modified C10 is 47nf same as TI application.
1. My charge waveform as below. when the SRN voltage about 8.1V, and the charge current will decrease to 0.15A. i changed the C13 to 0.47uf or higher, the charge wave is ok.
Q:if i modify the C13 capacitance, is there any impact?
2. when the battery absent, STAT always low, and the LED ON. after i Change the output capacitor(20uf,C14+C15) to 0.1uf. the STAT is blink conform to the datasheet. the power on and battery insertion waveforms are as below.
CH1—AVCC(pin4)
CH2—SW(pin1)
CH3—SRN(pin15)
CH4—STAT(pin9)
