DRV2605L

Part: DRV2605L — Texas Instruments

Type: Haptic Driver (LRA/ERM) with Effect Library

Description: 2–5.2 V haptic driver for LRA and ERM actuators with I²C-controlled playback engine, integrated Immersion TouchSense 2200 effect library (over 100 effects), and Smart-Loop closed-loop architecture.

Operating Conditions:

• Supply voltage: 2–5.2 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): 5.5 V
• Digital pin voltage (EN, SDA, SCL, IN/TRIG): -0.3 V to VDD + 0.3 V
• Max operating junction temperature: 150 °C
• Storage temperature: -65 to 150 °C

Key Specs:

• REG pin voltage: 1.83 V typ (TA = 25 °C, VDD = 3.6 V)
• Shutdown current: 4 μA typ, 7 μA max (EN = 0 V)
• Standby current: 4.1 μA typ, 7 μA max (EN = 1.8 V, STANDBY = 1)
• Quiescent current: 0.5 mA typ, 0.65 mA max (EN = 1.8 V, STANDBY = 0, no signal)
• Average battery current, 90% duty, no load: 2.4 mA typ (LRA), 2.3 mA typ (ERM); 3.5 mA max
• Start-up time: 0.7 ms (GO bit or trigger to output); 1.5 ms (EN high to output, PWM/analog modes)
• PWM output frequency: 19.5–21.5 kHz (20.5 kHz typ)
• I²C clock: up to 400 kHz
• Overcurrent load impedance threshold: 4 Ω typ
• Thermal resistance RθJA: 145.2 °C/W (DSBGA)

Features:

• Flexible haptic driver for LRA and ERM
• I²C-controlled digital playback engine with waveform sequencer and trigger
• Real-time playback mode through I²C
• I²C dual-mode drive (open and closed loop)
• Smart-Loop architecture: automatic overdrive and braking, resonance tracking and reporting (LRA), actuator diagnostics, level calibration
• Licensed Immersion TouchSense 2200 effect library (6 ERM libraries and 1 LRA library) and Audio-to-Vibe
• Drive compensation over battery discharge
• Efficient differential switching output drive
• PWM input with 0–100% duty-cycle control range
• Hardware trigger input
• 1.8-V compatible, VDD-tolerant digital interface

Applications:

• Mobile phones and tablets
• Watches and wearable technology
• Remote controls, mice, and peripheral devices
• Touch-enabled devices
• Industrial human-machine interfaces
• Electronic point of sale (ePOS)

Package:

• DSBGA (9), YZF, 1.50 mm × 1.50 mm max body, 0.5 mm pitch
• VSSOP (10), 3.00 mm × 3.00 mm max body

• 1 · Flexible Haptic and Vibration Driver
• -LRA (Linear Resonance Actuator)
• -ERM (Eccentric Rotating Mass)
• I 2 C-Controlled Digital Playback Engine
• -Waveform Sequencer and Trigger
• -Real-Time Playback Mode through I 2 C
• -I 2 C Dual-Mode Drive (Open and Closed Loop)
• Smart-Loop Architecture (Patent Pending Control Algorithm)
• -Automatic Overdrive and Braking
• -Automatic Resonance Tracking and Reporting (LRA Only)
• -Automatic Actuator Diagnostic
• -Automatic Level Calibration
• -Wide Support for Actuator Models
• Licensed Immersion TouchSense ® 2200 Features:
• -Integrated Immersion Effect Library
• -Audio-to-Vibe
• Drive Compensation Over Battery Discharge
• Wide Voltage Operation (2 V to 5.2 V)
• Efficient Differential Switching Output Drive
• PWM Input with 0% to 100% Duty-Cycle Control Range
• Hardware Trigger Input
• Fast Startup Time
• 1.8-V Compatible, VDD-Tolerant Digital Interface

• Mobile Phones and Tablets
• Watches and Wearable Technology
• Remote Controls, Mice, and Peripheral Devices
• Touch-Enabled Devices
• Industrial Human-Machine Interfaces
• Electronic Point of Sale (ePOS)

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

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 DRV2605L 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 58 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 59 shows a typical haptic system implementation supporting audio-to-vibe.

Figure 58. I 2 C Control with Optional PWM Input or External Trigger

Figure 59. I 2 C Control With Audio-to-Vibe Input and Optional AC Coupling

Table 32. Recommended External Components