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

1 of 26

© 2022 Renesas Electronics

General Description

DA7283 is a linear resonant actuator (LRA) haptic driver offering automatic closed-loop LRA

resonant frequency tracking. The feature guarantees consistency across LRA production tolerances,

operating temperature, aging, and mechanical coupling. DA7283 does not require any programming

to drive LRA motors within its supported range and will automatically lock to the correct LRA

resonant frequency without any actuator information being provided to the device.

The differential output drive architecture and continuous actuator motion sensing enable efficient

playback. Featuring three low-latency (0.75 ms) wake-up on general purpose input (GPI) sequence

triggers, DA7283 automatically returns to a low quiescent current state (typically 0.68

µA) between

playbacks. In OFF mode the device consumes only 5 nA, making it the appropriate choice for low

power and long standby applications.

Three different types of haptic feedback effects can be triggered via the GPIs. Time domain control of

these GPIs allows complex haptic effects playback capability at two different drive levels without the

need for another digital interface to the device. This feature makes DA7283 perfectly suited for

products that require unconditional haptic feedback like security applications or industrial products

and small software footprint solutions like wearables or home automation.

Key Features

■ LRA drive capability

■ No device programming required

■ Three GPI pins for triggering clicks and

complex patterns at two drive levels

■ Automatic LRA resonant frequency tracking

■ Ultra-low power consumption, IQ = 5 nA,

when the device is disabled

■ Low latency (0.75 ms) GPI wake-up

from low power consumption IDLE state,

IQ = 0.68

µA

■ Differential PWM output drive

■ Edge rate control for EMI suppression

■ Current driven system to deliver constant

actuator power

■ Automatic short circuit protection

■ Automatic over-temperature protection

■ Automatic under-voltage lockout protection

■ Automatic haptic playback timeout in case of

host disappearance

■ Supply monitoring and automatic output

limiting

■ Small solution footprint requiring only one

decoupling capacitor in both WLCSP and QFN