KIA6903P

SEMICONDUCTOR TECHNICAL DATA KIA6903P BIPOLAR LINEAR INTEGRATED CIRCUIT DC MOTOR SPEED CONTROLLER FOR CASSETTE TAPE RECORDER SYSTEM The KIA6903P is a monolithic IC developed for speed control of general purpose DC motors. This IC consist of a reference voltage generator, current multiplier, comparator and start circuit. The IC controls the speed of a DC motor by detecting counter electromotive force from the DC motor. FEATURES Wide Range of Working Power Supply Voltage. (VCC=3.5 18V) Very Large Starting Torque at the low Voltage. Large Allowable Loss due to Effective Utilization of Substrate Radiation. Usable for Various DC Motors by Means of Changing Constants of the External Components. DW G LH dP A 85 14 B TQ DIM MILLIMETERS A 9.6+_ 0.2 B 6.45+_ 0.2 D 1.52+_ 0.1 d 0.46+_ 0.1 G 0.50 MIN H 3.8+_ 0.3 L 3.3+_ 0.3 P 2.54 T 0.25+0.1/-0.05 W 7.62 Q 0 - 15 APPLICATION Radio Cassette Tape Recorders DIP-8 ABSOLUTE MAXIMUM RATINGS (Ta=25 ) PARAMETERS SYMBOL LIMITS UNIT CONDITIONS Supply Voltage VCC 18 V - Power Dissipation PD 1.4* W PCB:9 . T=1.0 Note : Derated above Ta=25 in the proportion of 11.2mW/ . BLOCK DIAGRAM KIA6903P 1 8 20:1 + - STARTER 27 36 VREF 45 2002. 7. 10 Revision No : 5 1/2 KIA6903P ELECTRICAL CHARACTERISTICS (VCC=12V, Ta=25 ) CHARACTERISTICS SYMBOL TEST CIRCUIT Bias Current I4 Fig.1(d) Output Saturation Voltage Vsat Fig.1(c) Reference Voltage VREF Fig.1(a) Current Ratio K Fig.1(b) Reference Voltage VariancePower Supply Voltag...