TDA5146T

INTEGRATED CIRCUITS TDA5146T Brushless DC motor drive circuit Product specification 1994 May 18 Philips Semiconductors Philips Semiconductors Product specification Brushless DC motor drive circuit TDA5146T FEATURES Full–wave commutation (using push/pull drivers at the output stages) without position sensors Built–in start–up circuit Three push–pull outputs: – 2 A output current (Typical) – Built–in current limiter Thermal protection Soft switching outputs Flyback diodes Tacho output sensor Brake function Direction control input Reset function FET driver stage to be used in a buck converter APPLICATIONS General purpose spindle driver (e.g., HDD, tape driver) GENERAL DESCRIPTION The TDA5146T is a bipolar integrated circuit used to drive brushless DC motors in full–wave mode. The device senses the rotor position using an EMF –sensing technique and is ideally suited as a drive circuit for a hard disk drive motor or tape drive. QUICK REFERENCE DATA Measured over full voltage and temperature ranges Symbol VP Vsup VVMOT VDo ILIM Parameter Supply voltage range (Note 1) Supply for the FET driver voltage range Input voltage to the output driver stages (see Fig. 1) Driver output voltage drop IO= 100 mA Current limiting Min. 4 4 1.7 – 1.80 Typ. – – – 0.9 2.0 Max. 18 18 16 1.05 2.5 Unit V V V V A NOTES: 1. An unstabilized supply can be used 2. VVMOT=VP ; all outputs IO = 0 mA ORDERING AND PACKAGE INFORMATION Type number n mber TDA5146T Package Name SO28 ...