مدار مجتمع (آی سی) آی‌سی مدیریت توان (پی‌ام‌آی‌سی) درایور و کنترلر موتور

Product Attributes

Introduction

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 it an ideal haptic driver for fast responses.

Integrates a 8KByte 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 upsampling to 48k.

Integrates an autobrake engine to suppress the aftershocks to zero for different drive waveforms(short or long) on different LRA motors.

Supports LRA fault diagnostic based on resistance measurement and protections of short-circuit, over-temperature and under-voltage.

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.

Features configurable automatically switch to standby mode after haptic waveform playback finished. This can less quiescent power consumption. The RSTN pin provides further power saving by fully shut down the whole device. Dedicated interrupt output pin can detect real time FIFO status and the error status of the chip.

Features general settings are communicated via an I2C-bus interface and its I2C address is configurable.

Available in a FCQFN 2mm x 3mm x 0.55mm -20L package.

Features

• 1MHz I2C Bus
• 8-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 = 9V @ Vbat = 4.2V for 8Ω 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

Applications

• Mobile phones
• Tablets
• Wearable Devices