View tda7274 datasheet:

TDA7274 ® LOW-VOLTAGE DC MOTOR SPEED CONTROLLER WIDE OPERATING VOLTAGE RANGE (1.8 to 6 V) BUILT-IN LOW-VOLTAGE REFERENCE (0.2 V) LINEARITY IN SPEED ADJUSTMENT HIGH STABILITY VS. TEMPERATURE LOW NUMBER OF EXTERNAL PARTS MINIDIP DESCRIPTION The TDA7274 is a monolithic integrated circuit ORDERING NUMBER : TDA7274 DC motor speed controller intended for use in mi- crocassettes, radio cassette players and other consumer equipment. It is particulary suitable for low-voltage applications. PIN CONNECTION (top view) September 2003 1/10 TDA7274 APPLICATION CIRCUIT V = 3.0V S R = 4.9? M R = 220? T E = 1.65V g I = 100mA M V = R I + E = 2.14V M M M g SCHEMATIC DIAGRAM 2/10 TDA7274 ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit VS Supply Voltage 6V IM Mot