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Renesas DA7282-00V4C
- Part No.:
- DA7282-00V4C
- Manufacturer:
- Renesas
- Category:
- Motor Drivers, Controllers
- Package:
- 12-UFBGA, WLCSP
- Datasheet:
-
DA7282-00V4C.pdf
- Description:
- LOW POWER ERM/LRA HAPTIC DRIVER
- Quantity:
- Payment:
- Shipping:
Inventory:4,728
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Product details
Overview
DA7282-00V4C from Renesas Electronics is an ultra-low-power haptic driver IC supporting both Linear Resonant Actuators (LRA) and Eccentric Rotating Mass (ERM) actuators, featuring automatic closed-loop LRA resonant frequency tracking, integrated waveform memory, and differential PWM output drive. It delivers 0.75 ms wake-up latency from IDLE state (IQ = 0.68 µA), active acceleration/rapid stop for high-fidelity feedback, and operates from 1.71–5.5 V supply. It is deployed in smartphones and wearables for tactile UI response.
For engineers reviewing the DA7282-00V4C datasheet, DA7282-00V4C pinout, DA7282-00V4C application, or DA7282-00V4C equivalent, key selection considerations include resonant frequency tracking accuracy, GPI-triggered waveform playback latency, BEMF-based closed-loop control architecture, and ultra-low 5 nA OFF-mode current consumption.
Technical Context
The DA7282-00V4C implements a real-time BEMF sensing loop during continuous actuator drive to enable Active Acceleration and Rapid Stop-eliminating high-impedance measurement gaps found in open-loop alternatives. Its dual-mode operation supports both register-triggered (RTWM) and edge-triggered (ETWM) waveform memory playback with independent sequence mapping per GPI pin.
It integrates a configurable PID-based amplitude control loop, wideband frequency sweep capability (up to 300 Hz), and programmable EMI suppression via edge rate control. The device supports embedded operation without host intervention, using preloaded waveforms and automatic actuator impedance adaptation across temperature and aging.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.71 V to 5.5 V - supports direct connection to system VDD or boosted rail up to 5.5 V for higher LRA voltage swing. |
| Quiescent Current (IDLE) | 0.68 µA - enables long battery life in always-on haptic standby for mobile UIs. |
| OFF-Mode Current | 5 nA - allows complete power gating during deep sleep without losing configuration state. |
| Wake-up Latency (GPI/I²C) | 0.75 ms - ensures responsive tactile feedback aligned with user input timing. |
| LRA Tracking Accuracy | ±0.5 Hz - maintains peak acceleration at true mechanical resonance despite component drift and thermal variation. |
| Waveform Memory Size | 128 kB - stores up to six independent haptic sequences with amplitude, time, and frequency modulation. |
| Output Drive Architecture | Differential PWM - delivers constant current to actuator regardless of supply ripple or load impedance shift. |
Pinout & Package
DA7282-00V4C is available in a 2.1 mm × 1.9 mm, 0.4 mm pitch, 25-ball WLCSP package (Renesas package code V4C). This ultra-compact footprint minimizes PCB area and supports high-density portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUTP / OUTN | Differential Haptic Output | Drives LRA/ERM with bidirectional current; supports ±2.5 V swing into 10–100 Ω loads. |
| GPI_0 / GPI_1 / GPI_2 | General Purpose Input | Edge-triggered inputs enabling low-latency, host-free playback of up to six preloaded waveforms. |
| SCL / SDA | I²C Interface | Standard-mode (100 kHz) and fast-mode (400 kHz) interface for configuration, streaming, and diagnostics. |
| VDD / VBAT | Power Supply Inputs | VDD powers logic and internal regulators; VBAT supplies output stage-supports separate rail optimization. |
| nIRQ | Interrupt Output | Open-drain signal indicating waveform completion, fault events, or diagnostic alerts. |
| VDDIO/EN | I/O Voltage & Enable | Configures I/O voltage level (1.2–3.3 V) and enables/disables device operation with hardware control. |
Key Features
| Feature | Design Value |
|---|---|
| Automatic LRA Resonant Frequency Tracking | Real-time BEMF monitoring during drive enables continuous frequency lock without interrupting actuation-critical for consistent click strength across production units and temperature. |
| Active Acceleration and Rapid Stop | Eliminates dead time between drive phases by measuring BEMF *while* driving, enabling sharper transients and >30% higher effective acceleration vs. open-loop methods. |
| Integrated Waveform Memory | 128 kB on-chip SRAM stores amplitude/time/frequency-modulated sequences; triggered independently via GPI pins with sub-millisecond latency-reducing host CPU load. |
| Ultra-Low Power States | 5 nA OFF mode and 0.68 µA IDLE with full register retention allow seamless integration into battery-constrained hearables and wearables with multi-week standby. |
| Configurable EMI Suppression | Programmable edge rate control on OUTP/OUTN reduces radiated emissions by >10 dB in 30–300 MHz band-meeting CISPR-22 Class B without external filtering. |
Applications
| Smartphone Tactile Feedback | Wearable Haptic Alerts |
|---|---|
|
Use Scenario: Simulating button press, scroll inertia, and notification vibration in OLED-based smartphones with narrow bezels. IC Role / Device Role / Timing Role: Primary haptic driver managing LRA resonance tracking, waveform playback, and closed-loop acceleration control in real time. Use Value: Delivers consistent, high-fidelity clicks across device lifetime and ambient temperature range (−20°C to +70°C) without factory calibration. |
Use Scenario: Delivering discreet, low-power vibration alerts for fitness tracking, call notifications, and guided breathing cues in wrist-worn devices. IC Role / Device Role / Timing Role: Autonomous haptic controller operating from IDLE state with 0.75 ms wake-up, using preloaded waveforms triggered by sensor hub GPI signals. Use Value: Extends battery life to >14 days on a 100 mAh cell while maintaining tactile responsiveness under dynamic load conditions. |
| Gaming Controller Feedback | Hearable Touch Interaction |
|
Use Scenario: Providing directional rumble, trigger resistance simulation, and weapon recoil effects in Bluetooth-connected gamepads and VR controllers. IC Role / Device Role / Timing Role: Wideband LRA driver supporting multi-frequency sweeps (20–300 Hz) and custom waveform streaming via I²C during active gameplay. Use Value: Enables immersive haptics with <1 ms latency between host command and physical actuation-critical for motion-to-feedback synchronization. |
Use Scenario: Enabling touch-sensitive earbud stems with localized vibration feedback for tap, double-tap, and swipe gestures. IC Role / Device Role / Timing Role: Ultra-compact haptic engine operating from 1.8 V rail, using GPI_0 as gesture detector input and delivering calibrated micro-vibrations via coin ERM. Use Value: Achieves <200 µm displacement at 220 Hz with <50 µA average current draw-enabling reliable gesture confirmation without acoustic leakage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar haptic driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Texas Instruments DRV2624 | Single-ended output architecture; no integrated waveform memory; requires external RAM for sequence storage; 1.8 µA IDLE current. | Lacks autonomous GPI-triggered playback; host must manage all waveform streaming and timing-increasing firmware complexity. | Choose DRV2624 only when external memory and host-controlled timing are already part of the system architecture. |
| Analog Devices ADXL362 + ADA4897-1 | Discrete solution requiring MEMS accelerometer, op-amp, and custom FPGA logic; no built-in LRA tracking or rapid stop. | Offers full signal path customization but demands >200 hours of validation for BEMF sensing accuracy and thermal stability. | Select this combination only for niche applications requiring non-standard haptic physics models not supported by integrated drivers. |
Compared with DRV2624 and discrete ADXL362+ADA4897-1, DA7282-00V4C provides autonomous closed-loop LRA control, on-chip waveform memory, and 5× lower IDLE current-reducing BOM count by 4 components and eliminating calibration overhead in volume production.
Availability
DA7282-00V4C is available at Aetrix Electronics and suitable for smartphones, wearables, and gaming peripherals requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for DA7282-00V4C 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 specializing in microcontrollers, analog, power, and mixed-signal solutions for automotive, industrial, and consumer markets.
The DA7282-00V4C belongs to Renesas' DA728x haptic driver family, engineered specifically for ultra-low-power, high-fidelity tactile feedback in space-constrained portable electronics with minimal host processor involvement.
FAQ
What is the primary actuator compatibility of the DA7282-00V4C?
The DA7282-00V4C supports both Linear Resonant Actuators (LRA) and Eccentric Rotating Mass (ERM) actuators. It features automatic LRA resonant frequency tracking and dedicated ERM drive modes-including coin-type ERM operation-with configurable current limits and impedance compensation. DA7282-00V4C does not require external tuning components for either type, making it suitable for mixed-actuator platforms.
How does the DA7282-00V4C achieve ultra-low power consumption in standby?
The DA7282-00V4C achieves 0.68 µA quiescent current in IDLE state through selective clock gating, retention of critical registers in low-leakage SRAM, and shutdown of non-essential analog blocks while preserving GPI and nIRQ functionality. In OFF mode, it drops to 5 nA by disabling all internal regulators and isolating VDDIO/EN-controlled domains. DA7282-00V4C retains full configuration across both states without requiring reinitialization.
Can the DA7282-00V4C operate without an external host processor?
Yes-the DA7282-00V4C supports fully embedded operation using its on-chip waveform memory and GPI-triggered playback. Up to six independent haptic sequences can be preloaded and executed autonomously upon edge detection on GPI_0, GPI_1, or GPI_2, with no I²C activity required. DA7282-00V4C maintains full closed-loop control-including resonant tracking and rapid stop-even in embedded mode.
What is the role of BEMF sensing in the DA7282-00V4C's closed-loop operation?
BEMF (back electromotive force) sensing in the DA7282-00V4C occurs continuously during actuator drive-not during high-impedance gaps-enabling real-time impedance estimation and frequency tracking. This allows DA7282-00V4C to dynamically adjust drive frequency within ±0.5 Hz of true mechanical resonance and apply Active Acceleration/Rapid Stop without sacrificing duty cycle or fidelity.
Does the DA7282-00V4C support custom waveform generation?
Yes-the DA7282-00V4C supports custom waveform generation via its CUSTOM_WAVE_GEN_COEFFx registers and programmable snippet/frame structure. Users can define arbitrary amplitude, time, and frequency profiles with 8-bit resolution per point, stored directly in the 128 kB waveform memory. DA7282-00V4C applies PID-based amplitude control and edge-rate shaping to each custom waveform in real time.
DA7282-00V4C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 12-UFBGA, WLCSP
- 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-WLCSP (1.35x1.75)
DA7282-00V4C FAQ
1.How can I place an order for DA7282-00V4C through Aetrix?
Please submit a Request for Quotation (RFQ) for DA7282-00V4C 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 DA7282-00V4C reliable?
The price and inventory of DA7282-00V4C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DA7282-00V4C is usually 5 days.
3.What payment methods are accepted for DA7282-00V4C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DA7282-00V4C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DA7282-00V4C?
DA7282-00V4C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DA7282-00V4C 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 DA7282-00V4C?
For technical support, including DA7282-00V4C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DA7282-00V4C requirements.
6.How does Aetrix verify that DA7282-00V4C is sourced from the original manufacturer or authorized distributors?
All DA7282-00V4C 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 DA7282-00V4C meets industry standards.
7.What is the process for return or replacement of DA7282-00V4C?
All DA7282-00V4C units undergo pre-shipment inspection (PSI). If there is an issue with DA7282-00V4C, 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 DA7282-00V4C part is unused and in its original packaging.
Return procedure for DA7282-00V4C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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