Electronic Components Datasheet Search |
|
TDA5149G Datasheet(PDF) 2 Page - NXP Semiconductors |
|
TDA5149G Datasheet(HTML) 2 Page - NXP Semiconductors |
2 / 28 page 1996 May 06 2 Philips Semiconductors Product specification 12 V Voice Coil Motor (VCM) driver and spindle motor pre-driver combination chip TDA5149G FEATURES General features • Single-chip voice coil motor driver and spindle motor pre-driver • Internal voltage reference generator • Programming of timing parameters via the serial bus • Control of sleep, brake and disable modes for both the VCM and spindle via the serial bus • Temperature monitor circuit • General purpose uncommitted operational amplifier. Voice coil motor driver • On-board full-bridge power DMOS driver with low R DSon • Class AB linear amplifier with no dead zone • Adjustable gain and bandwidth • Retract circuit operating at power-down. Spindle motor pre-driver • Designed to drive external N-channel power MOSFETs for brushless, sensorless DC motors • Internal or external commutation control • Digital commutation timing • Average motor supply current control with Pulse Width Modulation (PWM) • Soft switching under PWM control • Spindle brake after park at power-down. APPLICATIONS • 12 V high-performance hard disk drives. GENERAL DESCRIPTION The TDA5149G is a combination of a voice coil motor driver and a spindle motor pre-driver, capable of operating 12 V high-performance hard disk drives. The device integrates a spindle pre-driver that drives three external N-channel power MOSFETs in order to drive a three-phase brushless, sensorless DC motor in full wave mode. In the normal mode, commutations are generated from the internal Back EMF (BEMF) sensing circuitry. Commutations, however, can also be generated from an external source, thereby providing the possibility of driving the motor in the stepper-motor mode. The VCM driver is a linear transconductance amplifier capable of handling currents up to 1.65 A. It allows external adjustment of the gain and compensation. The TDA5149G also contains two drivers for a latch that secures the heads in the event of power-down. To control functions such as park, brake, sleep or disable and to program the different timing parameters, the TDA5149G is provided with a three-wire serial port. A high precision voltage monitor is also included, for both 5 and 12 V power supplies. Finally, the IC contains a temperature monitor circuit and an uncommitted operational amplifier connected to VDD, which can be used freely within the application. The device is contained in a LQFP64 package with 4 pins connected to the lead frame for improved heat dissipation. QUICK REFERENCE DATA ORDERING INFORMATION SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT VDD general supply voltage (pin 54) 10.8 12.0 13.2 V VDDD digital supply voltage (pin 55) 4.5 5.0 5.5 V VDDA1 analog supply voltage (pin 27) 4.5 5.0 5.5 V IoVCM voice coil motor output current − − 1.65 A RDSon VCM power DMOS total on-resistance (including leads and bond wires) Tj = 25 °C − − 0.65 Ω Tj = 125 °C − − 1.1 Ω TYPE NUMBER PACKAGE NAME DESCRIPTION VERSION TDA5149G LQFP64 plastic low profile quad flat package; 64 leads; body 10 × 10 × 1.4 mm SOT314-2 |
Similar Part No. - TDA5149G |
|
Similar Description - TDA5149G |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |