DRV2605YZFT.A

Part: DRV2605 — Texas Instruments

Type: Haptic Driver for ERM and LRA

Description: The DRV2605 is a flexible haptic driver for ERM and LRA actuators, featuring I2C control, a built-in Immersion effect library, and Smart-Loop Architecture for automatic overdrive/braking, resonance tracking, and actuator diagnostics.

Operating Conditions:

• Supply voltage: 2.5–5.5 V
• Operating temperature: -40 to 85 °C
• PWM input frequency: 10–250 kHz
• LRA Frequency Range: 125–300 Hz

Absolute Maximum Ratings:

• Max supply voltage: 6 V
• Max junction temperature: 150 °C
• Max storage temperature: 150 °C

Key Specs:

• REG pin voltage: 1.84 V (typ)
• Shutdown current: 1.75 μA (typ)
• Standby current: 1.9 μA (typ)
• Quiescent current: 0.6 mA (typ, no signal)
• Input impedance (IN/TRIG): 100 kΩ (typ)
• Load impedance threshold for over-current detection: 4 Ω
• Average battery current (LRA/ERM mode, no load, 90% duty cycle): 2.5 mA (typ)
• I2C SCL frequency: 400 kHz (max)

Features:

• Flexible Haptic/Vibra Driver for LRA and ERM
• I2C Controlled Digital Playback Engine with Real-Time Playback Mode
• Smart Loop Architecture for automatic overdrive/braking, resonance tracking, diagnostics, and level calibration
• Licensed Immersion™ TouchSense® 2200 features: Integrated Immersion Effect Library and Audio to Vibe
• Optional PWM Input with 0% to 100% Duty Cycle Control Range
• Optional Analog Input Control
• Optional Hardware Trigger Pin
• 1.8 V Compatible, VDD Tolerant Digital Pins

Applications:

• Mobile Phones and Tablets
• Watches and Wearable Technology
• Remote Controls, Mice, and Peripheral Devices
• Touch-Enabled Devices
• Human-Machine Interfaces

Package:

• DSBGA (9) - 1.50 mm × 1.50 mm

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

• Mobile Phones and Tablets
• Watches and Wearable Technology
• Remote Controls, Mice, and Peripheral Devices
• Touch-Enabled Devices
• 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

Table 30. Recommended External Components