FAH4840-269128 Datasheet, PDF (1/21 Pages) List of Unclassifed Manufacturers – FAH4840 Haptic Driver for Linear Resonant Actuators (LRAs)

October 2013
FAH4840
Haptic Driver for Linear Resonant Actuators (LRAs)
Features
 Direct Drive of LRA (Linear Resonant Actuator)
 External PWM Input (10 kHz to 250 kHz)
with Divider
 Internal Motor Enable / Disable Input
 Auto Resonant Tracking
 LDO Provides Stable Haptic Effect with
Battery Depletion
 Low Shutdown Current: < 5 nA
 Fast Wake-Up Time
 Nearly Rail-to-Rail Output Swing
 Thermal Shutdown, Over-Current Shutdown
 Register-Based Control by I²C
 Immersion TouchSense® 3000 Certified
 Package: 8- Lead MicroPak™ MLP
All trademarks are the property of their respective owners.
Description
The FAH4840 is a high-performance amplifier for
mobile phones and other hand-held devices. The
haptic driver takes a single-ended PWM input signal to
control a Linear Resonant Actuator (LRA). The device
utilizes an external 10 kHz to 250 kHz PWM signal
capable of meeting the wide range of resonant
frequencies needed for an LRA haptics applications.
The FAH4840 register map is accessible through an
I²C serial communication port.
Applications
 Mobile Phones
 Handheld Devices
 Any Key pad interface
Ordering Information
Part Number Top Mark Operating Temperature Range Package Packing Method Quantity
FAH4840L8X
YB
-40°C to +85°C
MicroPak™ MLP
Reel
5000
© 2013 Fairchild Semiconductor Corporation
FAH4840 • Rev. 1.0.0
www.fairchildsemi.com