Renesas DA7280-00FV2

Overview

DA7280-00FV2 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, and differential PWM output architecture. It delivers high-fidelity haptic feedback in smartphones and wearables with 0.75 ms I²C/GPI wake-up latency and ultra-low 0.36 µA quiescent current in IDLE state.

For engineers reviewing the DA7280-00FV2 datasheet, DA7280-00FV2 pinout, DA7280-00FV2 application, or DA7280-00FV2 equivalent, key selection considerations include resonant frequency tracking accuracy, embedded waveform playback without host intervention, BEMF-based active acceleration/rapid stop timing, and GPI-triggered low-latency haptic sequencing in battery-constrained portable systems.

Technical Context

The DA7280-00FV2 implements real-time back electromotive force (BEMF) sensing during continuous drive to enable closed-loop Active Acceleration and Rapid Stop-eliminating high-impedance measurement gaps found in competing solutions. Its resonant frequency tracking dynamically adjusts drive frequency across temperature, aging, and mechanical coupling variations.

It supports three operational input modes: I²C register control, GPI-triggered waveform memory playback (up to six sequences), and PWM streaming-all configurable via on-chip registers. The device operates in open-loop (ERM) or closed-loop (LRA) modes, with configurable EMI suppression and automatic short-circuit protection.

Key Specifications

Pinout & Package

DA7280-00FV2 is available in a 16-pin WLCSP (2.14 mm × 1.74 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 datasheet Figures 3, 39, and 40.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar haptic driver applications.

Compared with TI DRV2624 and STMicroelectronics STHV748, DA7280-00FV2 uniquely combines dual-mode (LRA/ERM) drive, on-chip waveform memory, and real-time resonant tracking-enabling smaller PCB area, lower firmware dependency, and superior tactile fidelity in portable electronics.

Availability

DA7280-00FV2 is available at Aetrix Electronics and suitable for smartphones, wearables, and computer peripherals requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for DA7280-00FV2 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 microcontrollers, analog power, and SoC solutions for automotive, industrial, and consumer markets with emphasis on energy efficiency and system integration.

The DA7280 product line targets ultra-low-power haptic feedback systems, specifically engineered to replace mechanical vibration motors with high-fidelity, software-defined tactile experiences in space- and battery-constrained devices.

FAQ

What is the primary function of the DA7280-00FV2 in a haptic system?

The DA7280-00FV2 serves as a fully integrated haptic driver that independently manages LRA and ERM actuators through closed-loop resonant frequency tracking, embedded waveform playback, and real-time BEMF-based motion control. Unlike basic motor drivers, DA7280-00FV2 executes high-fidelity tactile effects without continuous host supervision-making it ideal for battery-powered user interfaces where latency, power, and precision are critical.

Does the DA7280-00FV2 require external memory to store haptic waveforms?

No, the DA7280-00FV2 includes 128 bytes of on-chip waveform memory capable of storing up to six independent haptic sequences with amplitude, timing, and frequency parameters. This eliminates the need for external EEPROM or flash, reduces PCB footprint, and enables zero-latency playback triggered by GPI pins or I²C commands-without host processor involvement.

How does the DA7280-00FV2 achieve ultra-low quiescent current in IDLE state?

The DA7280-00FV2 achieves 0.36 µA quiescent current in IDLE state by powering down all analog blocks-including output drivers, BEMF sensing, and regulation loops-while retaining register and waveform memory contents. Only the GPI wake-up logic and I²C address decoder remain active, enabling 0.75 ms recovery to full operation upon trigger, which is 20% of the idle current of nearest alternative solutions.

Can the DA7280-00FV2 drive both LRA and ERM actuators simultaneously?

No, the DA7280-00FV2 supports either LRA or ERM mode per configuration-but not simultaneous dual-actuator drive. Mode selection is set via the ACTUATOR1 register (bit [1:0]), and the device optimizes its control loop, drive waveform, and diagnostics accordingly. Switching between modes requires register reconfiguration and is intended for system-level actuator selection-not concurrent operation.

What package options are available for the DA7280-00FV2, and are they pin-compatible?

The DA7280-00FV2 is offered in two pin-compatible packages: a 16-pin WLCSP (2.14 mm × 1.74 mm, 0.4 mm pitch) and a 16-pin QFN (3 mm × 3 mm, 0.5 mm pitch). Both share identical pin numbering, electrical characteristics, and thermal specifications per Renesas datasheet Sections 7.1–7.2. Layout guidelines differ due to footprint geometry, but schematic design and register configuration are fully interchangeable.