DRV2603 (ACTIVE)

Haptic Driver with Auto Resonance Tracking for LRA and Optimized Drive for ERM

Recommended alternative parts

  • DRV8601  -  Motor Driver (for ERMs and LRAs)

Description

The DRV2603 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 also designed for low latency, has excellent efficiency, and plenty of drive strength for actuators commonly used 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 ±2.5 Hz wide or less, so driving an LRA actuator presents a challenge. The DRV2603 solves this problem by employing auto resonance tracking, which automatically detects and tracks the optimum commutation frequency. This means that any input PWM frequency within the input range (10 kHz to 250 kHz) will automatically produce the correct resonant output frequency. As an additional benefit, the DRV2603 implements an optimal braking algorithm to stop the LRA from ringing out, leaving the user with a crisp haptic sensation.

For both ERM and LRA actuators, the automatic input level translation solves issues with low voltage PWM sources without adding additional external components, so if the digital I/O levels vary, the output voltage does not change. The DRV2603 also has supply correction that ensures no supply regulation is required for constant vibration strength, allowing an efficient, direct-battery connection.

Features

  • Flexible Haptic/Vibra Driver
    • LRA (Linear Resonance Actuator)
    • ERM (Eccentric Rotating Mass)
  • 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
  • 0% to 100% Duty Cycle Control Range
  • Fast Start Up Time
  • Differential Drive from Single-Ended Input
  • Wide Supply Voltage Range of 2.5 V to 5.2 V
  • 1.8 V Compatible, 5 V Tolerant Digital Pins
  • Available in a 2 mm × 2 mm × 0.75 mm
    leadless QFN package (RUN)

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Parametrics Compare all products in Motor Haptic Driver

 
Vs (Min) (V)
Vs (Max) (V)
Iq (Typ) (mA)
Shutdown Current (Typ) (uA)
Low-Level Input Voltage (Max) (V)
High-Level Input Voltage (Min) (V)
Startup Time (ms)
Haptic Actuator Type
Input Signal
Vout (Max) (V)
Operating Temperature Range (C)
Pin/Package
Package Group
Estimated Package Size (WxL) (mm2)
Approx. Price (US$)
DRV2603 DRV2604L DRV2605 DRV2605L
2.5     2.0     2.5     2.0    
5.2     5.2     5.5     5.2    
1.5     0.5       0.5    
1     4.0       4.0    
0.35     0.5     0.5     0.5    
1.3     1.3     1.3     1.3    
1.3     0.7     0.7     0.7    
ERM
LRA    
ERM
LRA    
ERM
LRA    
ERM
LRA    
PWM
Analog    
PWM
Analog
I2C    
PWM
Analog
I2C    
PWM
Analog
I2C    
  5.5     5.5     5.5    
-40 to 85     -40 to 85     -40 to 85     -40 to 85    
10QFN     10VSSOP
9DSBGA    
9DSBGA     10VSSOP
9DSBGA    
QFN     DSBGA
VSSOP    
DSBGA     DSBGA
VSSOP    
10QFN: 2 x 2: 4 mm2     10VSSOP: 3 x 3: 15 mm2       10VSSOP: 3 x 3: 15 mm2    
0.70 | 1ku     1.20 | 1ku     1.60 | 1ku     1.65 | 1ku    

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