DRV2605YZFT

Part: DRV2605 (DRV2605YZFR) — Texas Instruments

Type: Haptic Driver for ERM and LRA

Description: Haptic driver for ERM and LRA actuators with I²C control, an integrated Immersion TouchSense 2200 library of over 100 effects, a Smart-Loop architecture, and a 2.5–5.5 V supply.

Operating Conditions:

• Supply voltage: 2.5–5.5 V
• Operating temperature: -40 to 85 °C (free-air)
• PWM input frequency: 10–250 kHz
• LRA frequency range: 125–300 Hz
• Minimum load impedance: 8 Ω (VDD = 5.2 V)

Absolute Maximum Ratings:

• Max supply voltage (VDD): 6 V
• Max voltage on EN, SDA, SCL, IN/TRIG: VDD + 0.3 V
• Max junction temperature: 150 °C
• Storage temperature: -65 to 150 °C

Key Specs:

• Supply voltage VDD: 2.5–5.5 V
• Digital input low level (EN, IN/TRIG, SDA, SCL): 0.5 V max
• Digital input high level (EN, IN/TRIG, SDA, SCL): 1.3 V min
• Analog input voltage range (IN/TRIG, analog mode): 0–1.8 V
• PWM input frequency: 10–250 kHz
• LRA frequency range: 125–300 Hz
• Load impedance: 8 Ω min (VDD = 5.2 V)

Features:

• Flexible haptic driver for LRA and ERM actuators
• Digital playback engine controlled over I²C, with a real-time playback mode
• Smart-Loop architecture: automatic overdrive/braking, resonance tracking (LRA), actuator diagnostics, and level calibration
• Licensed Immersion TouchSense 2200: integrated effect library and Audio-to-Vibe
• Optional PWM input (0–100% duty), analog input, and hardware trigger pin
• Tri-modulated, efficient output driver
• Fast start-up time
• Continuous acceleration over supply voltage
• 1.8 V compatible, VDD-tolerant digital pins

Applications:

• Mobile phones and tablets
• Watches and wearable technology
• Remote controls, mice, and peripherals
• Devices supporting haptic feedback
• Human-machine interfaces

Package:

• DSBGA (9 balls), 1.50 mm × 1.50 mm max (WCSP)

• 1 · Flexible Haptic Feedback /Vibra Drivers
• -LRA (Linear Resonant Actuator)
• -ERM (Eccentric Rotating Mass)
• Digital Playback Engine Controlled by I 2 C
• -Real-Time Playback Mode via I 2 C
• Smart-Loop Architecture (1)
• -Automatic Overdrive / Braking (ERM/LRA)
• -Automatic Resonance Tracking (LRA)
• -Automatic Actuator Diagnostics (ERM/LRA)
• -Automatic Level Calibration (ERM/LRA)
• Licensed Immersion™ TouchSense ® 2200 Features:
• -Integrated Immersion Effect Library
• -Audio-to-Vibe
• Optional Pulse Width Modulation (PWM) Input with Duty Cycle Control Range from 0% to 100%
• Optional Analog Input Control
• Optional Hardware Trigger Pin
• Efficient Output Driver
• Fast Start-Up Time
• Continuous Acceleration Over Supply Voltage
• 1.8V Compatible, VDD-Tolerant Digital Pins
• (1) Patent-pending control algorithm

• Mobile Phones and Tablets
• Watches and Wearable Technology
• Remote Controls, Mice, and Peripherals
• Devices Supporting Haptic Feedback
• Human-Machine Interfaces

YZF Package 9-Pin DSBGA With 0.5-mm Pitch (Top View)

Pin Functions

Pin Functions

TA = 25°C, VDD = 3.6 V (unless otherwise noted)

over operating free-air temperature range, TA = 25°C (unless otherwise noted)

over operating free-air temperature range (unless otherwise noted)

The typical application for a haptic driver is in a touch-enabled system that already has an application processor which makes the decision on when to execute haptic effects.

The DRV2605 device can be used fully with I 2 C communications (either using RTP or the memory interface). A system designer can chose to use external triggers to play low-latency effects (such as from a physical button) or can decide to use the PWM interface. Figure 54 shows a typical haptic system implementation. The system designer should not use the internal regulator (REG) to power any external load.

A system designer can also implement audio-to-vibe. Figure 55 shows a typical haptic system implementation supporting audio-to-vibe.

Figure 54. I 2 C Control with Optional PWM Input or External Trigger

Figure 55. I 2 C Control With Audio-to-Vibe Input and Optional AC Coupling