Ultra-Low Power LRA Haptic Driver with Multiple Input Triggers and Software-Free Operation

R15DS0040EE0320 Rev.3.20

June 16, 2026

CFR0011-120-00

Page 4

Figures

Figure 1. System diagrams...................................................................................................................................... 2

Figure 2. DA7283 block diagram ............................................................................................................................. 6

Figure 3. DA7283 pinout diagrams (top view) for WLCSP and QFN ...................................................................... 7

Figure 4. LRA output acceleration swept in frequency with constant power input signal...................................... 11

Figure 5. System state diagram............................................................................................................................. 13

Figure 6. Simple GPI behavior............................................................................................................................... 14

Figure 7. Generating 100 ms sequence using GPI_1 ........................................................................................... 15

Figure 8. Complex sequence generation using GPIs............................................................................................ 15

Figure 9. 200 ms haptic sequence oscilloscope image......................................................................................... 15

Figure 10. Optional calibration sequence .............................................................................................................. 16

Figure 11. Automatic output limiting ...................................................................................................................... 16

Figure 12. WLCSP package outline drawing......................................................................................................... 17

Figure 13. QFN package outline drawing .............................................................................................................. 18

Figure 14. External components diagram.............................................................................................................. 21

Figure 15: WLCSP example PCB layout ............................................................................................................... 22

Figure 16: QFN example PCB layout .................................................................................................................... 22

Tables

Table 1. DA728x feature comparison ...................................................................................................................... 5

Table 2. Pin description ........................................................................................................................................... 7

Table 3. Pin type definition ...................................................................................................................................... 7

Table 4. Absolute maximum ratings ........................................................................................................................ 8

Table 5. Recommended operating conditions ......................................................................................................... 8

Table 6. Current consumption ................................................................................................................................. 9

Table 7. Electrical characteristics ............................................................................................................................ 9

Table 8. Timing characteristics .............................................................................................................................. 10

Table 9. WLCSP thermal ratings ........................................................................................................................... 10

Table 10. QFN thermal ratings .............................................................................................................................. 10

Table 11. GPI drive level behavior ........................................................................................................................ 14

Table 12. GPI trigger ranges ................................................................................................................................. 14

Table 13. MSL classification .................................................................................................................................. 19

Table 14. Ordering information .............................................................................................................................. 20