Diodes Incorporated – Power IC optimised for driving LRA and ERM haptic feedback devices

Pg14_DiodesINC

DiodesINC
The new PAM8016 from Diodes Inc is a driver IC which has features optimised for driving the Linear Resonance Actuator (LRA) and Eccentric Rotating Mass (ERM) haptic elements that are commonly used to provide tactile feedback such as vibration alerts in portable devices.

The PAM8016 is notable for its low latency and high output current capable of driving haptic loads. The efficient, filterless output-drive configuration achieves efficiency of up to 90% when driving an 8Ω load.

Start-up time is just 4ms. The driver operates from a supply-voltage range of 2.8V to 5.5V, compatible with the typical supply rail of a battery-operated device. It supports differential, single-ended or PWM inputs for easy integration with a host microcontroller.

The PAM8016 requires no external output filter and few other components, and a driver circuit based on the device occupies a small PCB area. This results in lower system cost and a simpler circuit design.

FEATURES

  • <1μA shut-down current
  • 5mA quiescent current
  • 95dB signal-to-noise ratio
  • -70dB power-supply rejection ratio
  • Under-voltage lock-out
  • Short-circuit and thermal protection functions

APPLICATIONS

  • Watches and other wearable devices
  • Joysticks and mice
  • Touch-sensing enabled products
  • Human-machine interfaces

white_spacer

Leave a Reply

Your email address will not be published. Required fields are marked *

Protected by WP Anti Spam