LA6505 Datasheet, PDF (1/13 Pages) Sanyo Semicon Device – For CD-ROM, DVD-ROM and MD players

Ordering number : ENA0595
LA6505
Monolithic Linear IC
For CD-ROM, DVD-ROM and MD players
Six-Channel Driver
Overview
The LA6505 is a six-channel driver for CD and MD players and recorders.
It adopts direct PWM drive output in the spindle motor drive to minimize heat generation at high spindle speeds. It also
features a soft switching function that minimizes spindle motor drive noise by making the current changes at each phase
switch more gradual.
The sled motor driver implements two-phase stepping drive and supports direct PWM inputs. The LA6505 uses a BTL
amplifier design for the focus and tracking driver blocks, and a similar design for the loading driver as well.
Functions
(1) Spindle motor driver block
• Three-phase brushless motor driver
• Adopts a current feedback direct PWM drive design
• Supports analog inputs and features a V-type control amplifier
• Built-in oscillator circuit (The oscillator frequency can be set with an external capacitor.)
• Soft-switching drive
• FG output for one phase (the U phase)
• Built-in reverse rotation prevention circuit
• Built-in Hall sensor power supply (npn transistor, open collector output)
• Current limiter setting function (The limit is set by the resistor RF.)
• Standby mode (SS) function that operates for the spindle driver and BTL amplifiers.
(2) Sled motor driver block
• Adopts a current feedback direct PWM drive design
• Supports stepping motors
• Muting function (MUTE-SLD; only applies to the sled driver)
(3) Sled motor driver block
• BTL amplifier based design
• Built-in input operational amplifiers
• Built-in level shifting circuits
• Standby mode (SS) function
Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to
"standard application", intended for the use as general electronics equipment (home appliances, AV equipment,
communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be
intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace
instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety
equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case
of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee
thereof. If you should intend to use our products for applications outside the standard applications of our
customer who is considering such use and/or outside the scope of our intended standard applications, please
consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our
customer shall be solely responsible for the use.
Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate
the performance, characteristics, and functions of the described products in the independent state, and are not
guarantees of the performance, characteristics, and functions of the described products as mounted in the
customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent
device, the customer should always evaluate and test devices mounted in the customer's products or
equipment.
22807 MS PC B8-6750 No.A0595-1/13