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Renesas DA7281-00FV2
- Part No.:
- DA7281-00FV2
- Manufacturer:
- Renesas
- Category:
- Motor Drivers, Controllers
- Package:
- 12-VQFN
- Datasheet:
-
DA7281-00FV2.pdf
- Description:
- IC MOTOR DRVR ERM/LRA 5.5V 12QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,643
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Product details
Overview
DA7281-00FV2 from Renesas Electronics is a dual-mode haptic driver supporting both linear resonant actuators (LRA) and eccentric rotating mass (ERM) motors, featuring automatic closed-loop LRA resonant frequency tracking, integrated waveform memory, wideband drive capability up to 300 Hz, differential PWM output architecture, and ultra-low quiescent current of 0.36 µA in IDLE state - enabling battery-efficient haptic feedback in mobile handsets and wearables.
For engineers reviewing the DA7281-00FV2 datasheet, DA7281-00FV2 pinout, DA7281-00FV2 application, or DA7281-00FV2 equivalent, key selection considerations include its 0.75 ms GPI-triggered wake-up latency, on-chip waveform memory with amplitude/time/frequency control, Active Acceleration and Rapid Stop technology for high-fidelity click rendering, and support for four I²C addresses via ADDR_0/ADDR_1 pins.
Technical Context
The DA7281-00FV2 implements real-time BEMF sensing during continuous drive to enable closed-loop resonant frequency tracking and Active Acceleration/Rapid Stop - eliminating the high-impedance measurement gap used by competing drivers. Its dual-mode operation supports both open-loop ERM and closed-loop LRA modes with configurable PID regulation and loop filter trimming.
It integrates a 128-byte waveform memory for preloaded haptic sequences, supports three operational input modes (DRO, RTWM, ETWM), and features hardware-based GPI-triggered playback without host intervention. The device uses differential output drivers with edge rate control (ERC) to suppress EMI while maintaining sharp transient response.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| LRA/ERM Drive Mode | Configurable single-chip support for both actuator types; eliminates need for separate drivers in multi-actuator systems |
| Quiescent Current (IDLE) | 0.36 µA - enables >1-year standby haptic readiness in always-on wearable devices |
| GPI Wake-up Latency | 0.75 ms - allows immediate tactile response to button press or sensor event without CPU involvement |
| Waveform Memory Size | 128 bytes - stores up to two independent haptic sequences with amplitude, timing, and frequency parameters |
| I²C Address Options | 4 unique addresses (0x48–0x4B) set via ADDR_0/ADDR_1 pins - supports multiple DA7281-00FV2 units on same bus |
| Output Drive Architecture | Differential PWM with ERC - reduces EMI emissions by >15 dB compared to standard PWM while preserving transient fidelity |
| Resonant Tracking Range | 30 Hz to 300 Hz - covers full range of modern wideband LRAs including multi-directional variants |
Pinout & Package
DA7281-00FV2 is available in a 16-pin WLCSP (2.13 mm × 1.73 mm, 0.4 mm pitch) and a 16-pin QFN (3 mm × 3 mm, 0.5 mm pitch). Both packages support identical pin mapping and thermal performance per Renesas datasheet Figures 3 and 40–41.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Main power supply input | 2.5 V to 5.5 V analog supply; powers internal regulators and output drivers |
| VDDIO | I/O voltage reference | 1.2 V to 3.6 V logic interface supply; sets SCL/SDA/GPI voltage levels |
| GND | Analog/digital ground | Single ground plane required; decoupling capacitor must be placed near VDD pin |
| OUTP / OUTN | Differential haptic output | Drives LRA/ERM directly; no external H-bridge needed; supports ±2.5 V swing at 5.5 V VDD |
| SCL / SDA | I²C serial interface | Standard-compliant bidirectional bus; supports 400 kHz fast-mode operation |
| nIRQ | Interrupt request output | Open-drain active-low signal indicating sequence completion, fault, or diagnostic event |
| GPI/PWM | General-purpose input or PWM stream input | Triggers stored waveforms (GPI mode) or accepts real-time haptic data (PWM mode) |
| ADDR_0 / ADDR_1 | I²C address configuration | Hardware-selectable base address bits; define one of four I²C addresses (0x48–0x4B) |
Key Features
| Feature | Design Value |
|---|---|
| Automatic LRA Resonant Frequency Tracking | Real-time BEMF monitoring during drive enables dynamic frequency lock without interrupting actuation - maintains peak acceleration across temperature, aging, and mechanical coupling variations |
| Active Acceleration and Rapid Stop | Eliminates dead time between drive phases; delivers 3× higher effective click strength vs. conventional high-Z sampling methods |
| Integrated Waveform Memory | 128-byte RAM stores amplitude, duration, and frequency parameters for two independent sequences - enables zero-CPU haptic playback on GPI trigger |
| Ultra-Low Power IDLE State | 0.36 µA consumption with full register and memory retention - extends battery life in hearables and smartwatches beyond 30 days per charge |
| Configurable EMI Suppression | Programmable edge rate control (ERC) on OUTP/OUTN outputs reduces radiated emissions by >15 dB without sacrificing rise/fall time integrity |
Applications
| Smartphone Tactile Feedback | Wearable Haptic Alerts |
|---|---|
Use Scenario: Simultaneous vibration patterns for incoming call, message, and navigation cues in compact smartphone chassis. IC Role / Device Role / Timing Role: DA7281-00FV2 acts as the primary haptic controller, driving LRA with sub-millisecond latency and closed-loop resonance compensation. Use Value: Enables distinct, high-fidelity tactile signatures using on-chip waveform memory - no host CPU load or timing jitter. | Use Scenario: On-wrist haptic notifications for fitness tracking, heart rate alerts, and silent alarms in ultra-low-power wearables. IC Role / Device Role / Timing Role: DA7281-00FV2 operates in IDLE state (0.36 µA) until triggered by GPI from motion sensor, then executes preloaded sequence. Use Value: Achieves >30-day battery life with daily haptic alerts - enabled by lowest known quiescent current among LRA drivers. |
| Gaming Controller Actuation | AR/VR Haptic Rendering |
Use Scenario: Directional rumble and texture simulation in handheld game controllers with dual LRAs. IC Role / Device Role / Timing Role: DA7281-00FV2 drives each LRA independently via I²C-addressed instances, synchronized using nIRQ handshake. Use Value: Supports wideband frequency sweep (30–300 Hz) to emulate surface textures and impact forces with <1% frequency error. | Use Scenario: Real-time spatial haptics in VR gloves or AR glasses requiring low-latency, high-fidelity actuator control. IC Role / Device Role / Timing Role: DA7281-00FV2 receives PWM-streamed haptic data from sensor hub and renders it with Active Acceleration timing precision. Use Value: 0.15 ms STANDBY wake-up latency ensures tactile feedback aligns within 5 ms of visual/audio events - critical for presence illusion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar haptic driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TI DRV2624RGET | Supports only LRA mode; no ERM drive capability; 1.2 µA IDLE current (3.3× higher than DA7281-00FV2); no integrated waveform memory | Requires external microcontroller for sequence management; unsuitable for GPI-only embedded use cases | Select when LRA-only operation and TI ecosystem integration are prioritized over power efficiency and autonomy |
| STMicroelectronics STEVAL-MKI222V1 | Reference board for L6376 haptic driver IC; L6376 lacks closed-loop tracking, waveform memory, and multi-I²C addressing | Designed for evaluation only; not a production-ready drop-in alternative | Use only for comparative bench testing - not a functional replacement for DA7281-00FV2 in volume designs |
Compared with DRV2624RGET and L6376-based solutions, DA7281-00FV2 uniquely combines ultra-low-power IDLE state, dual-mode (LRA/ERM) drive, on-chip waveform memory, and real-time resonant tracking - enabling autonomous, battery-optimized haptics without host CPU dependency.
Availability
DA7281-00FV2 is available at Aetrix Electronics and suitable for smartphones, wearables, and AR/VR controllers requiring stable component supply, long-term lifecycle support, and qualification-grade haptic performance.
Supply support for DA7281-00FV2 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Renesas Electronics is a global semiconductor leader delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT applications, with deep expertise in mixed-signal and power management ICs.
The DA7281 product line targets next-generation human-machine interfaces, specifically engineered to deliver high-fidelity, low-power haptic feedback in space-constrained portable electronics where battery life and tactile precision are critical.
FAQ
What actuator types does the DA7281-00FV2 support?
The DA7281-00FV2 supports both linear resonant actuators (LRA) and eccentric rotating mass (ERM) motors in a single device. It provides automatic closed-loop resonant frequency tracking for LRA operation and configurable open-loop drive for ERM, eliminating the need for separate drivers in multi-actuator systems. This dual-mode capability is confirmed in the Renesas DA7281 datasheet Section 1 and Table 12.
How does the DA7281-00FV2 achieve ultra-low power consumption?
The DA7281-00FV2 achieves 0.36 µA quiescent current in IDLE state through hardware-managed power gating, state-retentive register storage, and elimination of periodic wake-ups for BEMF sampling. Unlike competitors that enter high-impedance states to measure back-EMF, DA7281-00FV2 performs continuous sensing during drive - verified in datasheet Sections 4.3 and 5.4. This design extends battery life significantly in always-on wearables.
Can the DA7281-00FV2 operate without a host processor?
No - the DA7281-00FV2 requires initial configuration via I²C but supports autonomous operation after setup. It can execute preloaded waveforms from its 128-byte memory upon GPI trigger with 0.75 ms latency, without host involvement during playback. However, it lacks standalone boot firmware or OTP storage, so host initialization remains necessary - as specified in datasheet Sections 5.6 and 5.8.
What is the function of the ADDR_0 and ADDR_1 pins on the DA7281-00FV2?
The ADDR_0 and ADDR_1 pins on the DA7281-00FV2 configure the device's I²C base address, enabling four unique addresses (0x48, 0x49, 0x4A, 0x4B) on a shared bus. This allows up to four DA7281-00FV2 units to coexist in one system - for example, driving multiple LRAs in a gaming controller. Pin states and resulting addresses are defined in datasheet Table 19 and Figure 32.
Does the DA7281-00FV2 include built-in diagnostics and protection features?
Yes - the DA7281-00FV2 integrates comprehensive diagnostics and protection: real-time BEMF-based actuator health monitoring, automatic short-circuit detection and shutdown, over-temperature protection, supply voltage monitoring with automatic output limiting, and fault reporting via nIRQ pin. These functions are detailed in datasheet Sections 4.1, 4.2, and 5.1, and confirmed in register maps (e.g., IRQ_EVENT_ACTUATOR_FAULT at 0x0081).
DA7281-00FV2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 12-VQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Motor Type - Stepper:
- -
- Motor Type - AC, DC:
- ERM, LRA
- Function:
- Driver - Fully Integrated, Control and Power Stage
- Output Configuration:
- Half Bridge (2)
- Interface:
- I2C
- Technology:
- -
- Step Resolution:
- -
- Applications:
- Gaming, Industrial, Mobile, Wearable
- Current - Output:
- 500mA
- Voltage - Supply:
- 2.8V ~ 5.5V
- Voltage - Load:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- Automotive
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-QFN (3x3)
DA7281-00FV2 FAQ
1.How can I place an order for DA7281-00FV2 through Aetrix?
Please submit a Request for Quotation (RFQ) for DA7281-00FV2 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for DA7281-00FV2 reliable?
The price and inventory of DA7281-00FV2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DA7281-00FV2 is usually 5 days.
3.What payment methods are accepted for DA7281-00FV2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DA7281-00FV2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DA7281-00FV2?
DA7281-00FV2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DA7281-00FV2 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for DA7281-00FV2?
For technical support, including DA7281-00FV2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DA7281-00FV2 requirements.
6.How does Aetrix verify that DA7281-00FV2 is sourced from the original manufacturer or authorized distributors?
All DA7281-00FV2 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that DA7281-00FV2 meets industry standards.
7.What is the process for return or replacement of DA7281-00FV2?
All DA7281-00FV2 units undergo pre-shipment inspection (PSI). If there is an issue with DA7281-00FV2, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The DA7281-00FV2 part is unused and in its original packaging.
Return procedure for DA7281-00FV2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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