The DRV2603RUNT is a Haptic Driver designed specifically to solve common obstacles in driving both Linear Resonance Actuator (LRA) and Eccentric Rotating Mass (ERM) haptic elements. The DRV2603 is designed for low latency, high efficiency and more drive strength for actuators commonly used for tactile feedback in the portable market. LRA actuators typically have a narrow frequency band over which they have an adequate haptic response. This frequency window is typically ±2.5Hz wide or less, so driving an LRA actuator presents a challenge. The driver solves this problem by employing auto resonance tracking, which automatically detects and tracks the LRA resonant frequency in real time. This means that any input PWM frequency within the input range will automatically produce the correct resonant output frequency. As an additional benefit, the driver implements an automatic braking algorithm to prevent LRA ringing at the end of waveforms, leaving the user with a crisp haptic sensation.
Auto resonance tracking for LRA
No frequency calibration required
Automatic drive commutation
Automatic braking algorithm
Wide input PWM frequency range
Constant vibration strength over supply
Automatic input level translation
Fast start-up time
Differential drive from single-ended input
Immersion touch sense 3000 compatible
Green product and no Sb/Br
This device has limited built-in ESD protection, leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.
