FAH4830MPX

FAH4830MPX Datasheet


FAH4830 Haptic Driver for DC Motors ERMs and Linear Resonant Actuators LRAs

Part Datasheet
FAH4830MPX FAH4830MPX FAH4830MPX (pdf)
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FAH4830 Haptic Driver for DC Motors ERMs and Linear Resonant Actuators LRAs

March 2013

FAH4830 Haptic Driver for DC Motors ERMs and Linear Resonant Actuators LRAs
• 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
• Mobile Phones
• Handheld Devices
• Any Key-Pad Interface

Related Resources
• AN-5067 PCB Land Pattern Design and Surface-

Mount Guidelines for MLP Packages

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.

Serial I2C Interface

Bandgap Reference

UVLO

Programmable

Control Logic and Register

Differential Driver

GND MDN

C1 GAIN

Figure 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


FAH4830 Haptic Driver for DC Motors ERMs and Linear Resonant Actuators LRAs

Pin Configuration

Figure Pin Assignments Top View

Pin Definitions

Name Pin # Type

Power

Power Ground

Output Positive motor driver output

Output Negative motor driver output

GAIN

Input Gain control for motor driving 39 nF capacitor required to tied to MDN

Input PWM input

HEN SDA SCL

Input Haptic motor enable/disable HIGH enable, LOW disable

Input

I2C data input

Input

I2C clock input

Note The exposed DAP should be connected to ground.
2012 Fairchild Semiconductor Corporation

FAH4830 Haptic Driver for DC Motors ERMs and Linear Resonant Actuators LRAs

Absolute Maximum Ratings

Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be operable above the recommended operating conditions and stressing the parts to these levels is not recommended. In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability. The absolute maximum ratings are stress ratings only.

Parameter

VDD DC Supply Voltage VIO Analog and Digital I/O All Input and Output Pins

Min.

Max.

VCC+0.3

Unit

Reliability Information

Parameter
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Datasheet ID: FAH4830MPX 513861