特性
• 1MHz I2C Bus
• 12-KByte Memory
• 12k/24k/48k input wave sampling rate
• F0 detect and tracking
• Advance autobrake engine integrated
• Playback mode:
➢Real time playback(Up to 4KByte FIFO)
➢Memory playback
➢3 Trigger playback
➢One wire playback
➢Cont playback
• Resistance-Based LRA Diagnostics
• Drive signal monitor for LRA protect
• Drive Compensation Over Battery Discharge
• Fast Start Up Time ＜1ms
• Dedicated interrupt output pin
• Boost output voltage up to 11V
• VOUT=8.5V@Vbat=4.2V for 16Ω LRA
• Support automatically switch to standby mode
• Standby current：8uA@Vbat=3.6V
• Shutdown current：0.1uA
• Supply voltage range 3 to 5.5V
• Short-Circuit Protection, Over-Temperature Protection, Under-Voltage Protection
• FCQFN 2mm × 3mm × 0.55mm -20L Package
说明
AW86905 is a high voltage H-bridge, single chip LRA haptic driver, with F0 detecting and tracking based on BEMF, with a boost converter up to 11V drive voltage inside, supporting real time playback, memory playback, cont playback, one wire and hardware pin trigged playback. A typical startup time of 1ms makes the AW86905 an ideal haptic driver for fast responses.
AW86905 integrates a 12KByte SRAM for user-defined waveforms to achieve a variety of vibration experiences, supporting 3 sampling rate(12k/24k/48k) of waveforms loaded in SRAM, supporting output waveform sampling rate up-sampling to 48k.
AW86905 integrates an autobrake engine to suppress the aftershocks to zero for different drive waveforms(short in long) on different LRA motor.
AW86905 supports LRA fault diagnostic based on resistance measurement and protections of short-circuit, over-temperature and under-voltage.
AW86905 integrates a high-efficiency boost converter as the H-Bridge driver supply rail. The output voltage, maximum current limit and maximum boost current are configurable.
AW86905 features configurable automatically switch to standby mode. This can less quiescent power consumption. Dedicated interrupt output pin can detect real time FIFO status and the error status of the chip.
AW86905 features general settings are communicated via an I2C-bus interface and its I2C address is configurable.
AW86905 is available in a FCQFN 2mm x 3mm x 0.55mm -20L package.
