DIO59618A

Version 1.0, Oct 2025

www.dioo.com

© 2025 Dioo Microcircuits Co., Ltd. Jiangsu

IV

List of Figures

Figure 1. QFN3*3-20 (Top view) ..................................................................................................................... 1

Figure 2. BUCK charging efficiency vs. different battery voltage ................................................................... 7

Figure 3. BOOST efficiency vs. different battery voltage ................................................................................7

Figure 4. BUCK charging current vs. battery voltage ..................................................................................... 7

Figure 5. Charging current vs. battery voltage ................................................................................................7

Figure 6. Charge with ITC.................................................................................................................................7

Figure 7. Charge with ICC................................................................................................................................ 7

Figure 8. Charge with ICC................................................................................................................................ 8

Figure 9. BOOST operation ............................................................................................................................ 8

Figure 10. Earphone charging ........................................................................................................................ 8

Figure 11. Earphone charging .........................................................................................................................8

Figure 12. VBUS OVP and recover ................................................................................................................ 8

List of Tables

Table 1. BUCK_CFG0 register.................................................................................................................................. 11

Table 2. BUCK_CFG1 register.................................................................................................................................. 12

Table 3. BUCK_CFG2 register.................................................................................................................................. 12

Table 4. BOOST_CFG0 register............................................................................................................................... 13

Table 5. VOx_CFG0 register......................................................................................................................................14

Table 6. VOx_CFG1 register......................................................................................................................................14

Table 7. MULTI_CFG register....................................................................................................................................15

Table 8. SYS_CFG register........................................................................................................................................16

Table 9. IRQ_0 register...............................................................................................................................................17

Table 10. IRQ_1 register............................................................................................................................................ 17

Table 11. COM_CFG register.................................................................................................................................... 18

Table 12. I2C slave address....................................................................................................................................... 19

Table 13. I2C (7 bit) slave address byte................................................................................................................... 19