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SIH6889N

The SIH6889N is a 20-pin high-voltage haptic driver IC. This chip supports low-power standby mode, real-time playback mode, stored playback mode, continuous mode, and test mode (including LRA resistance (RL) detection, LRA diagnostics, and VBAT measurement). Automatic braking is enabled in all playback modes. It includes a fast mode and an I2C interface.

The SIH6889N aims to provide advanced haptic experiences and perfect touch for smartphones, tablets, and wearable devices. It supports I2S functionality for better synchronization between haptic feedback, audio, and video playback. It supports unipolar PWM output drive. It supports OTP/OCP/UVLO/POR protection functions. It supports transmitting chip warnings and FIFO status via hardware pin interrupts. It supports automatic switching to standby mode after playback completion, and power-saving shutdown via hardware reset pin or software reset. It supports dual LRA synchronization via a single IIC bus. It also supports dual-chip synchronization via hardware pins.

The SIH6889N is packaged in an FCQFN package, measuring 2mm × 3mm × 0.55mm, with 20 pins.

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Product Features

  • 1MHz/400kHz I2C bus interface, device address selectable 0x68/0x6B

  • Supports five data formats for I2S

  • Automatic braking and overdrive are optional.

  • LRA Fault Diagnosis

  • Drive compensation during battery discharge

  • 8KB of on-chip memory for waveform data

  • Two playback modes: Real-time playback (RTP) mode; RAM playback mode.

  • Startup time less than 1ms

  • Two test modes: Actuator RL detection; VBAT measurement

  • Real-time chip protection (short circuit/over temperature/over current/under voltage lockout)

  • Real-time LRA protection

  • Automatically switches to standby mode after playback is complete.

  • OSC calibration

  • Turn-off current: 0.4μA

  • 2.5V to 5.5V power supply voltage range

  • The maximum boost voltage is 11.5V.

  • When VBAT=4.2V, Vout=8.8V (for an 8Ω LRA).

  • PWM output rate: 48kHz/96kHz

  • Waveform interpolation ratios: 1x, 2x, and 4x

  • Unipolar PWM

  • FCQFN package, 2mm × 3mm × 0.55mm, 20-pin

Application scenarios

Application diagram

Sample application

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