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Renesas DA7282-00V42
- Part No.:
- DA7282-00V42
- Manufacturer:
- Renesas
- Category:
- Motor Drivers, Controllers
- Package:
- 12-UFBGA, WLCSP
- Datasheet:
-
DA7282-00V42.pdf
- Description:
- LOW POWER ERM/LRA HAPTIC DRIVER
- Quantity:
- Payment:
- Shipping:
Inventory:8,975
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Product details
Overview
DA7282-00V42 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), supports three GPI-triggered independent haptic sequences, and enables embedded operation without host intervention - ideal for smartphone tactile feedback and wearable haptic interfaces.
For engineers reviewing the DA7282-00V42 datasheet, DA7282-00V42 pinout, DA7282-00V42 application, or DA7282-00V42 equivalent, key selection considerations include its dual-mode actuator support, BEMF-based Active Acceleration and Rapid Stop technology, ultra-low 5 nA OFF-mode current, I²C/PWM streaming capability, and WLCSP/QFN package options with single-decoupling-capacitor design.
Technical Context
The DA7282-00V42 implements a closed-loop control architecture that continuously monitors back electromotive force (BEMF) during drive to dynamically adjust drive frequency and amplitude - enabling real-time LRA resonance tracking across temperature, aging, and mechanical coupling variations. Its differential output stage supports both current-driven LRA excitation and voltage-driven ERM operation.
It operates in multiple functional modes: Direct Register Override (DRO), Pulse Width Modulation (PWM), Register-Triggered Waveform Memory (RTWM), and Edge-Triggered Waveform Memory (ETWM). The on-chip waveform memory stores up to six independent haptic sequences with amplitude, time, and frequency control, triggered by GPI_0–GPI_2 or I²C commands with sub-millisecond latency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | VDD = 2.0 V to 5.5 V - supports direct battery connection (VBAT) and system rail operation without external regulators. |
| Quiescent Current (IDLE) | 0.68 µA - enables long-term haptic readiness in always-on wearable/smartphone UI contexts. |
| OFF-Mode Current | 5 nA - allows multi-year shelf life and zero-drain storage in disposable or low-maintenance devices. |
| Wake-up Latency (GPI/I²C) | 0.75 ms from IDLE - ensures responsive tactile feedback aligned with user interface events. |
| Output Drive Architecture | Differential PWM - delivers precise, current-controlled actuation with minimal EMI and no software calibration. |
| Waveform Memory Capacity | Supports ≥6 independent sequences - enables rich haptic UX (e.g., distinct notifications, gestures, alerts) without host CPU involvement. |
| Resonant Tracking Accuracy | ±0.5 Hz resolution - maintains peak LRA acceleration across production variance and thermal drift. |
Pinout & Package
DA7282-00V42 is available in two RoHS-compliant packages: 20-pin WLCSP (2.14 mm × 1.74 mm, 0.4 mm pitch) and 20-pin QFN (3.0 mm × 3.0 mm, 0.5 mm pitch). Both packages support identical pin functions and thermal performance per Renesas datasheet R15DS0041EE0330 Rev.3.30.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUTP / OUTN | Differential Haptic Output | Drives LRA/ERM with programmable amplitude and phase; supports current-sensing for closed-loop control. |
| GPI_0 / GPI_1 / GPI_2 | General Purpose Input | Edge-triggered inputs for initiating preloaded waveforms; configurable as GPIO or PWM input (GPI_0 only). |
| SCL / SDA | I²C Interface Bus | Standard 100/400 kHz I²C interface for configuration, streaming, and diagnostics; supports multi-drop. |
| nIRQ | Interrupt Output | Open-drain active-low signal indicating event completion, fault, or diagnostic alert; reduces polling overhead. |
| VDD / VBAT | Power Supply Inputs | VDD powers logic and internal regulators; VBAT supplies output driver - enables flexible power domain partitioning. |
| VDDIO/EN | I/O Voltage & Enable | Configures I/O voltage level (1.2–3.6 V); also serves as hardware enable - simplifies power sequencing. |
Key Features
| Feature | Design Value |
|---|---|
| Active Acceleration and Rapid Stop | Enables sharp, high-fidelity clicks by applying controlled overdrive and immediate braking - eliminates dead time from high-Z BEMF sampling used in legacy drivers. |
| Automatic LRA Resonant Frequency Tracking | Maintains optimal drive frequency in real time using continuous BEMF analysis - ensures consistent tactile strength across unit-to-unit variation and environmental change. |
| Integrated Waveform Memory | Stores amplitude-, time-, and frequency-parameterized haptic sequences - enables host-free playback and reduces firmware complexity in resource-constrained systems. |
| Ultra-Low Power States | IDLE (0.68 µA) and OFF (5 nA) states with full register retention - extends battery life in hearables and wearables without sacrificing responsiveness. |
| Configurable EMI Suppression | Adjustable edge rate control and loop filter tuning - meets CISPR-22 Class B emissions limits without added shielding or ferrites. |
Applications
| Smartphone Tactile Feedback | Wearable Haptic Alerts |
|---|---|
|
Use Scenario: Simulating button press, scroll inertia, and notification vibration in compact mobile UIs. IC Role / Device Role / Timing Role: Primary haptic actuator driver with embedded waveform playback and real-time resonance compensation. Use Value: Delivers consistent, high-fidelity tactile response across device lifetime and temperature range - critical for premium UX differentiation. |
Use Scenario: Delivering discreet, low-power vibration alerts for fitness tracking, call notifications, and gesture guidance. IC Role / Device Role / Timing Role: Autonomous haptic controller operating from coin-cell or small Li-ion batteries with microamp-level background current. Use Value: Enables >1-year battery life in hearables while maintaining <1 ms wake-up latency for urgent alerts. |
| Gaming Controller Feedback | Automotive Touch Interface |
|
Use Scenario: Providing directional rumble, trigger resistance simulation, and immersive haptic effects in handheld gamepads. IC Role / Device Role / Timing Role: Wideband LRA driver supporting multi-directional actuation and custom waveform streaming via I²C. Use Value: Achieves <100 Hz–300 Hz wideband response with Active Acceleration - essential for realistic weapon recoil and terrain feedback. |
Use Scenario: Enhancing touch-sensitive center consoles and steering-wheel controls with safety-critical tactile confirmation. IC Role / Device Role / Timing Role: Fault-tolerant haptic driver with built-in diagnostics, supply monitoring, and automatic output limiting under voltage sag. Use Value: Meets automotive ASIL-B functional safety requirements through self-test, open/short detection, and fail-safe shutdown behavior. |
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. | Lacks autonomous GPI-triggered playback - host MCU must manage all waveform timing and triggering. | Choose DRV2624 when system already includes dedicated haptic memory and prioritizes cost over autonomy and power efficiency. |
| Analog Devices ADXL345 + ADA4897-based discrete haptic solution | No integrated driver; requires external amplifier, ADC, and control logic - significantly larger PCB footprint and higher BOM count. | Offers full customizability but increases firmware development effort and validation scope. | Choose discrete implementation only when unique analog signal path control or mixed-signal co-design is required beyond DA7282-00V42's capabilities. |
Compared with DRV2624 and discrete solutions, DA7282-00V42 reduces system-level power consumption by >90% in standby, eliminates host dependency for basic haptics, and shrinks solution size by integrating memory, sensing, and closed-loop control - making it optimal for space- and energy-constrained portable electronics.
Availability
DA7282-00V42 is available at Aetrix Electronics and suitable for smartphones, wearables, and automotive human-machine interfaces requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for DA7282-00V42 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 sensor solutions for automotive, industrial, and consumer markets.
The DA7282-00V42 belongs to Renesas' DA72xx haptic driver family, engineered specifically for ultra-low-power, high-fidelity tactile feedback in battery-powered portable devices - emphasizing autonomy, precision resonance control, and minimal system integration overhead.
FAQ
What actuator types does the DA7282-00V42 support?
The DA7282-00V42 supports both Linear Resonant Actuators (LRA) and Eccentric Rotating Mass (ERM) actuators. For LRAs, it provides automatic closed-loop resonant frequency tracking and Active Acceleration/Rapid Stop. For ERMs, it delivers voltage-mode drive with configurable amplitude and timing - enabling unified haptic hardware across diverse mechanical implementations in a single design.
How does the DA7282-00V42 achieve ultra-low power consumption?
The DA7282-00V42 achieves ultra-low power via three optimized states: OFF mode draws just 5 nA, IDLE mode retains full register state at 0.68 µA, and STANDBY mode wakes in 0.15 ms at 0.8 mA. These states are managed autonomously - no host intervention is needed to enter or exit low-power modes, making DA7282-00V42 ideal for always-on wearable and hearable applications.
Can the DA7282-00V42 operate without a host processor?
Yes, the DA7282-00V42 supports fully embedded operation. Its integrated waveform memory stores up to six haptic sequences, and GPI_0–GPI_2 pins can trigger playback independently. Once configured, DA7282-00V42 executes waveforms, manages resonance tracking, and applies Active Acceleration/Rapid Stop without any host CPU involvement - reducing firmware load and system latency.
What is the role of BEMF monitoring in the DA7282-00V42?
BEMF (back electromotive force) monitoring in the DA7282-00V42 enables real-time, in-drive measurement of LRA impedance and phase - eliminating the need for high-impedance sampling gaps. This allows continuous closed-loop control for resonant frequency tracking and Active Acceleration/Rapid Stop, resulting in stronger, sharper haptic feedback compared to interrupt-driven or open-loop alternatives.
Does the DA7282-00V42 support I²C and PWM simultaneously?
The DA7282-00V42 supports I²C and PWM in separate operational modes - not concurrently on the same interface. GPI_0 can function as a PWM input in PWM Mode, while I²C remains available for configuration and streaming in RTWM/ETWM modes. System design must select the appropriate mode at boot; mode switching is supported via register writes but requires intentional reconfiguration.
DA7282-00V42 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)
DA7282-00V42 FAQ
1.How can I place an order for DA7282-00V42 through Aetrix?
Please submit a Request for Quotation (RFQ) for DA7282-00V42 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 DA7282-00V42 reliable?
The price and inventory of DA7282-00V42 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DA7282-00V42 is usually 5 days.
3.What payment methods are accepted for DA7282-00V42?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DA7282-00V42 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DA7282-00V42?
DA7282-00V42 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DA7282-00V42 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 DA7282-00V42?
For technical support, including DA7282-00V42 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DA7282-00V42 requirements.
6.How does Aetrix verify that DA7282-00V42 is sourced from the original manufacturer or authorized distributors?
All DA7282-00V42 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 DA7282-00V42 meets industry standards.
7.What is the process for return or replacement of DA7282-00V42?
All DA7282-00V42 units undergo pre-shipment inspection (PSI). If there is an issue with DA7282-00V42, 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 DA7282-00V42 part is unused and in its original packaging.
Return procedure for DA7282-00V42:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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