DA7283

Ultra-Low Power LRA Haptic Driver with

Multiple Input Triggers and Software-Free

Operation

Datasheet

Revision 3.1

10-Feb-2022

CFR0011-120-00

14 of 26

© 2022 Renesas Electronics

Automatic Under-Voltage Lockout Protection

Automatic under-voltage lockout protection (UVLO) detects when VDD drops below 2.8 V and protects

DA7283 by stopping playback. The device will then attempt to drive only at the next GPI request for

playback.

Automatic Haptic Playback Timeout

The longest sequences provided by the device are 60 seconds long via GPI_1 and GPI_2. If the host

crashes after starting a pattern and does not send a negative edge to stop it, DA7283 will stop

playback after 60 seconds and return to an IDLE state. This guarantees that the haptic device will not

completely discharge the battery in case of a software crash.

Supply Monitoring and Automatic Output Limiting

DA7283 monitors the power supply voltage level and adjusts the drive voltage accordingly, so that

the output does not clip to the supply voltage. This feature guarantees controlled output allowing

continued resonant frequency tracking functionality even when the device is operating under low

power supply conditions or heavy battery load, see Section 5.3.2.

Small Solution Footprint

Available in an ultra-small 1.35 mm x 1.75 mm, 0.4 mm pitch, 0.545 mm height, 3 x 4 WLCSP, or a

3.0 mm x 3.0 mm, 0.65 mm pitch, 0.78 mm height, 12 lead QFN package, DA7283 minimizes the

required PCB size and overall solution cost. In the typical application case, only a single 100 nF

decoupling capacitor is required. See Section 8 and Section 9.