FAH4820 View Datasheet(PDF) - Fairchild Semiconductor

Part Name

Description

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FAH4820

Direct Driver for DC Motors (ERMs)

Fairchild Semiconductor 

June 2013

FAH4820

Direct Driver for DC Motors (ERMs)

Features

 Single-Pin Direct-Drive of ERM for Simple Vibration

Control

 External Motor Enable/Disable, Vibration Control

 Register-Based I2C Control

(Optional; Device Operates in Default Condition)

 Over-Driving Motor Control, Drive ERM Voltage to

VDD Rail

 Programmable Motor Drive Voltage

 Low Standby Current: <1 µA

 Fast Wake-up Time

 Nearly Rail-to-Rail Output Swing

 Protections: Under-Voltage, Over-Current,

Over-Temperature

 Package: 10-Lead MLP

Applications

 Mobile Phones

 Handheld Devices

 Keypad Interfaces

Description

The FAH4820 is a high-performance enhanced ERM

driver for mobile phone and other hand-held devices.

This device does not require a PWM signal to generate

vibration of the ERM; it is controlled by the drive level on

the HEN input. The ERM spins for the length of time that

the HEN pin is held HIGH, then stop when the HEN

pin is pulled LOW. The FAH4820’s register maps are

accessible via I2C serial communication, which is useful

for higher or lower drive voltage across the ERM or if

disabling the device is desired.

Related Resources

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

Mount Guidelines for MLP Packages

Ordering Information

Part Number

FAH4820MPX

Operating

Temperature Range

-40°C to +85°C

Package

10-Lead, Dual, JEDEC MO-229, 3 mm Square,

Molded Leadless Package (MLP)

Packing Method

3000 Units on

Tape & Reel

© 2013 Fairchild Semiconductor Corporation

FAH4820 • 1.0.0

www.fairchildsemi.com

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