FAH4830 View Datasheet(PDF) - Fairchild Semiconductor

Part Name

Description

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FAH4830

Haptic Driver for DC Motors (ERMs) and Linear Resonant Actuators (LRAs)

Fairchild Semiconductor 

January 2013

FAH4830

Haptic Driver for DC Motors (ERMs) and Linear

Resonant Actuators (LRAs)

Features

 Direct Drive of ERM and LRA Motors

 External PWM Input (10 kHz to 50 kHz)

 External Motor Enable/Disable Input

 Internal Mode-Select Register: ERM or LRA

 Low Standby Current: <500 nA

 Fast Wake-up Time

 Nearly Rail-to-Rail Output Swing

 Register-Based Control by I2C

 Over Driving Motor Control

 Under-Voltage, Over-Current, and Over-

Temperature Protections

 Settable Filter and External Gain Control

 Package: 10-Lead MLP

Applications

 Mobile Phones

 Handheld Devices

 Any Key-Pad Interface

Related Resources

 AN-5067 — PCB Land Pattern Design and Surface-

Mount Guidelines for MLP Packages

Description

The FAH4830 is a high-performance enhanced haptic

drive for mobile phone and other hand-held devices.

The haptic driver takes a single-ended PWM input

signal to control a DC motor. It can drive both Eccentric

Rotating Mass (ERM) and Linear Resonant Actuator

(LRA) motors. The device utilizes an external 10 kHz to

50 kHz PWM signal capable of meeting the wide range

of resonant frequencies.

The FAH4830 has its own register maps accessible via

I2C serial communication. A gain control setting can be

used to help prevent PWM noise from getting into the

motor and to control the maximum output voltage on the

motor. For ERM motors, the over-drive control block is

designed to control the inertial momentum of the motor.

Figure 1. Block Diagram

Ordering Information

Part Number Operating Temperature Range

FAH4830MPX

-40°C to +85°C

Package

10-Lead, Dual, JEDEC MO-229,

3mm Square, Molded Leadless

Package (MLP)

Packing Method

3000 Units on

Tape & Reel

© 2012 Fairchild Semiconductor Corporation

FAH4830 • 1.0.1

www.fairchildsemi.com

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