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