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Renesas DA7281-00FVC
- Part No.:
- DA7281-00FVC
- Manufacturer:
- Renesas
- Category:
- Motor Drivers, Controllers
- Package:
- 12-VQFN
- Datasheet:
-
DA7281-00FVC.pdf
- Description:
- IC MOTOR DRVR ERM/LRA 5.5V 12QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,246
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Product details
Overview
DA7281-00FVC from Renesas Electronics is a programmable haptic driver IC 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, and ultra-low quiescent current of 0.36 µA in IDLE state. It enables high-fidelity tactile feedback in space-constrained mobile interfaces.
For engineers reviewing the DA7281-00FVC datasheet, DA7281-00FVC pinout, DA7281-00FVC application, or DA7281-00FVC equivalent, key selection criteria include its dual-mode actuator support, 0.75 ms GPI-triggered wake-up latency, on-chip waveform memory with amplitude/time/frequency control, Active Acceleration and Rapid Stop technology for sharper click response, and four configurable I²C addresses via ADDR_0/ADDR_1 pins.
Technical Context
The DA7281-00FVC implements real-time BEMF sensing during continuous drive to enable closed-loop resonant frequency tracking and Active Acceleration/Rapid Stop-eliminating high-impedance measurement gaps found in open-loop competitors. Its differential output architecture delivers constant current drive independent of supply variation, ensuring consistent actuator power across VDD = 2.0–5.5 V.
It supports three operational modes: Direct Register Override (DRO), Register-Triggered Waveform Memory (RTWM), and Edge-Triggered Waveform Memory (ETWM), with configurable EMI suppression and automatic short-circuit protection. The device retains state in IDLE mode and offers two low-power states: IDLE (IQ = 0.36 µA) and STANDBY (IQ = 0.8 mA).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| LRA/ERM Drive | Single-channel differential PWM driver supporting both LRA and ERM actuators with automatic mode detection |
| Resonant Tracking | Real-time closed-loop LRA frequency tracking across temperature, aging, and mechanical coupling variations |
| Quiescent Current | 0.36 µA in IDLE state with full register retention-enables multi-week battery life in always-on haptic systems |
| Wake-up Latency | 0.75 ms from IDLE to playback via GPI; 0.15 ms from STANDBY-critical for responsive UI feedback |
| I²C Addresses | Four selectable base addresses (0x48–0x4B) via ADDR_0/ADDR_1 pins-supports up to four DA7281-00FVC on one bus |
| Waveform Memory | On-chip non-volatile memory stores up to two independent haptic sequences with amplitude, time, and frequency control |
| Supply Range | VDD = 2.0–5.5 V; VDDIO = 1.65–3.6 V-compatible with modern mobile SoC I/O rails and boost supplies |
Pinout & Package
DA7281-00FVC is available in a 20-pin WLCSP package (2.13 mm × 1.73 mm, 0.4 mm pitch) and a 20-pin QFN package (3 mm × 3 mm, 0.5 mm pitch). Both packages support identical pin functions and thermal performance per Renesas datasheet Figures 3, 40, and 41.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUTP / OUTN | Differential Haptic Output | Drives LRA/ERM with current-controlled push-pull PWM; enables zero-crossing detection and BEMF sensing |
| GPI/PWM | General Purpose Input / PWM Stream | Triggers preloaded waveforms (GPI mode) or accepts real-time PWM input (PWM mode); dual-function pin |
| SCL / SDA | I²C Serial Interface | Configures registers, streams waveforms, reads diagnostics; supports standard/fast-mode I²C up to 400 kHz |
| ADDR_0 / ADDR_1 | I²C Address Selection | Hardware-configurable pins setting base I²C address (0x48–0x4B); enables multi-device coexistence |
| nIRQ | Interrupt Request Output | Active-low open-drain signal indicating sequence completion, fault conditions, or diagnostic events |
| VDD / VDDIO | Power Supplies | VDD powers analog/digital core (2.0–5.5 V); VDDIO sets I/O voltage level (1.65–3.6 V) |
| GND | Ground Reference | Dedicated analog/digital ground plane connection; requires low-impedance PCB layout per Figure 43/44 |
Key Features
| Feature | Design Value |
|---|---|
| Active Acceleration & Rapid Stop | Enables sharp, high-fidelity clicks by applying controlled acceleration ramp and immediate braking-no dead-time insertion required |
| Integrated Waveform Memory | Stores two independent haptic sequences with per-sample amplitude, duration, and frequency control-reduces host CPU load and latency |
| Wideband LRA Support | Drives LRAs across 50–300 Hz with adaptive loop filtering-optimized for multi-directional and broadband tactile effects |
| Automatic Actuator Diagnostics | Real-time BEMF analysis detects open/short circuits, impedance shifts, and mechanical faults-enables self-healing UI behavior |
| Configurable EMI Suppression | Edge rate control (ERC) on OUTP/OUTN outputs reduces radiated emissions without external filters-simplifies FCC/CE compliance |
Applications
| Smartphone Touch Feedback | Wearable Haptic Alerts |
|---|---|
Use Scenario: Simulating button press, scroll inertia, and notification taps on OLED touchscreens with no mechanical moving parts. IC Role / Device Role / Timing Role: DA7281-00FVC acts as the closed-loop haptic actuator controller, directly driving LRA via differential PWM while tracking resonance in real time. Use Value: Delivers consistent tactile strength across battery voltage drop and temperature drift-eliminates perceptible feedback degradation over device lifetime. | Use Scenario: Delivering discreet vibration alerts for call, message, and health event notifications on wrist-worn devices with tight power budgets. IC Role / Device Role / Timing Role: DA7281-00FVC operates in ETWM mode, waking from 0.36 µA IDLE state within 0.75 ms upon GPI trigger to play preloaded alert waveforms. Use Value: Extends wearable battery life by >20% versus prior-generation haptic drivers due to ultra-low quiescent current and zero-host intervention playback. |
| Gaming Controller Tactile Cues | Automotive Infotainment Feedback |
Use Scenario: Generating directional rumble, weapon recoil, and surface texture simulation in handheld game controllers with low-latency responsiveness. IC Role / Device Role / Timing Role: DA7281-00FVC uses DRO mode for real-time PWM streaming from MCU, enabling sub-millisecond effect updates synchronized to game physics engine. Use Value: Achieves <1 ms end-to-end latency from game logic to actuator motion-critical for immersive haptic immersion and competitive advantage. | Use Scenario: Providing confirmatory haptics for touchscreen HVAC, navigation, and media controls in automotive cockpits under wide ambient temperature ranges. IC Role / Device Role / Timing Role: DA7281-00FVC performs automatic LRA resonant frequency tracking across –40°C to +85°C, maintaining consistent feedback intensity without calibration. Use Value: Ensures reliable user interface feedback across vehicle lifecycle-no field recalibration needed despite thermal cycling and mechanical aging. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar haptic driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DA7282 | Includes EN pin for true OFF state (5 nA), higher IDLE current (680 nA), no multiple I²C addressing | Better suited for systems requiring complete power gating; lacks hardware address flexibility for multi-IC designs | Select DA7282 only if system-level power sequencing mandates sub-10 nA shutdown current and I²C bus sharing is not required |
| TI DRV2624 | Supports LRA/ERM but uses open-loop frequency estimation; no integrated waveform memory; higher IQ (2.5 µA) | Requires host-based waveform streaming and periodic recalibration; less suitable for ultra-low-power always-on use cases | Choose DRV2624 when cost sensitivity outweighs power/performance requirements and host resources are available for real-time control |
Compared with DA7282 and DRV2624, DA7281-00FVC uniquely combines ultra-low IDLE current (0.36 µA), hardware-configurable I²C addressing, and closed-loop resonant tracking-making it optimal for battery-powered multi-actuator systems demanding consistent, maintenance-free haptics.
Availability
DA7281-00FVC is available at Aetrix Electronics and suitable for smartphones, wearables, gaming peripherals, and automotive infotainment systems requiring stable component supply, long-term lifecycle support, and guaranteed traceability.
Supply support for DA7281-00FVC 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 microcontrollers, analog power, and mixed-signal solutions for automotive, industrial, and consumer electronics.
The DA7281 product line targets high-fidelity, low-power haptic feedback in portable and embedded human-machine interfaces-designed specifically to replace mechanical buttons and deliver immersive tactile experiences without compromising battery life.
FAQ
What is the function of the ADDR_0 and ADDR_1 pins on the DA7281-00FVC?
The ADDR_0 and ADDR_1 pins on the DA7281-00FVC are hardware-configurable I²C address select inputs that set one of four base I²C addresses (0x48, 0x49, 0x4A, or 0x4B). This allows up to four DA7281-00FVC devices to share the same I²C bus without address conflict-essential for multi-actuator systems like dual-haptic smartphones or VR controllers. Each combination corresponds to a unique effective address per Table 19 in the datasheet.
Does the DA7281-00FVC support both LRA and ERM actuators simultaneously?
No-the DA7281-00FVC supports either LRA or ERM operation per configuration, not simultaneous dual-actuator drive. Its ACTUATOR1 register (0x000C) must be programmed to select LRA mode (bit[1:0] = 0b01) or ERM mode (0b10) before initialization. Automatic mode detection is not supported; correct actuator type selection is required to enable appropriate drive profiles, BEMF sensing, and resonant tracking algorithms.
How does the DA7281-00FVC achieve 0.36 µA quiescent current in IDLE state?
The DA7281-00FVC achieves 0.36 µA quiescent current in IDLE state by powering down all analog blocks except essential bias circuitry and retaining full register state in SRAM. The internal oscillator and BEMF sensing are disabled, and the output drivers enter high-impedance mode while maintaining GPI and I²C wake-up capability. This ultra-low IQ is measured at VDD = 3.6 V and TA = 25°C per Table 6 in the datasheet-and is 20% of the nearest competitive solution's idle current.
Can the DA7281-00FVC operate without an external host processor?
No-the DA7281-00FVC requires initial configuration via I²C and does not support autonomous operation like the DA7283. It lacks built-in boot ROM or OTP execution capability. All waveform memory loading, mode selection, and parameter tuning must be performed by a host MCU or application processor. However, once configured, it can execute preloaded sequences autonomously upon GPI trigger with no further host involvement.
What is the maximum LRA frequency range supported by the DA7281-00FVC?
The DA7281-00FVC supports LRA operation from 50 Hz to 300 Hz, as confirmed in Section 5.5 "Wideband Frequency Control" and Figure 6 of the datasheet. Its closed-loop resonant tracking algorithm dynamically adapts to the actuator's mechanical resonance within this band, and the wideband drive architecture ensures full utilization of modern multi-directional LRAs-unlike narrowband drivers limited to ±10 Hz around nominal frequency.
DA7281-00FVC 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)
DA7281-00FVC FAQ
1.How can I place an order for DA7281-00FVC through Aetrix?
Please submit a Request for Quotation (RFQ) for DA7281-00FVC 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 DA7281-00FVC reliable?
The price and inventory of DA7281-00FVC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DA7281-00FVC is usually 5 days.
3.What payment methods are accepted for DA7281-00FVC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DA7281-00FVC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DA7281-00FVC?
DA7281-00FVC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DA7281-00FVC 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 DA7281-00FVC?
For technical support, including DA7281-00FVC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DA7281-00FVC requirements.
6.How does Aetrix verify that DA7281-00FVC is sourced from the original manufacturer or authorized distributors?
All DA7281-00FVC 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 DA7281-00FVC meets industry standards.
7.What is the process for return or replacement of DA7281-00FVC?
All DA7281-00FVC units undergo pre-shipment inspection (PSI). If there is an issue with DA7281-00FVC, 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 DA7281-00FVC part is unused and in its original packaging.
Return procedure for DA7281-00FVC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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