1 Features

• Serial Peripheral Interface (SPI)

– Maximum Read/Write 35 MHz

– 3.3-V Digital I/O

• Actuator and Motor Driver

– PWM Control With H-Bridge Output

– Focus / Tracking / Tilt Actuator Driver With 12-

Bit DAC Control

– Sled Motor Drivers With Current Mode, 10-Bit

DAC Control

– Load Driver With 12-Bit DAC Control

– Capable End Position Sensing for Sled

Without Position Sensor

• Spindle Motor Driver

– Integrated Spindle Current Sense Resistor

– Selectable Current Sense Resistor Value 0.27

to 0.20 Ω by Register Setting; Thereby, SPM

Current can be Restricted from 725 to 980 mA

– Sensor-Less: Rotor Position Sense by Motor

BEMF

– 12-Bit Spindle DAC Programmed Through

Serial Port

– Self-Contained Inductive Position Sense and

Startup

– Quick Stop by Automatic Controlled Brake

Named Auto Short Brake (Short and Active

Brake)

– 0.7-A Maximum Continuous Current Excluding

Thermal Issues

– LS Mode: Restricted to 25% of Normal Speed

• Utility Functions

– XRESET Signal With Digital Delay (POR) 20

ms

– Status Latch: Act Timer, SIF Error, PWR

Monitor, Thermal Protection, and OCP Error

• Switch

– CSW: Software Control Current Output Port

• LDO Pre-Driver

– 1-Channel LDO Pre-Driver for 3.3-V or 1.2-V

Output With External Transistor

• Protection

– Individual Thermal Protect Circuit on CSW,

SPM, and Act Channel

– Two Alert Levels: Pre-Detect and Detect in

Thermal Protection

– Overcurrent Protection Circuit in Load Driver

– Selectable OCP Threshold Level in CSW

Output

– Hardware Device Disable Pin XMUTE

– Power Monitor by Undervoltage Lockout

(UVLO) and Overvoltage Protection (OVP)

2 Applications

• DVD Player

• CD Player

• Optical Disk Drive

3 Description

TPIC2040 is a very-low noise type motor driver IC

suitable for slim or ultra-slim DVD reader/writer. This

IC includes integrated current sense resistance that

measures SPM current and reduces drive system cost. The 7-channel driver IC controlled by serial I/F

is optimum for driving a spindle motor, a sled motor,

a load motor, and Focus / Tracking / Tilt actuators.

The spindle motor driver uses BEMF detection for

sensorless startup and control of the spindle motor