AN6652

UTC AN6652 MOTOR CONTROL CIRCUIT DESCRIPTION LINEAR INTEGRATED CIRCUIT The UTC AN6652 is an IC designed for the rotating speed control of a compact DC motor, which is used for a tape recorder, record player, etc. FEATURES *Small four-lead plastic package for compact motor. Fewer external parts. *Stable low reference voltage (1.25V typ.), wide motor speed setting *Highly stable operation over a wide range of supply voltage and torque supply voltage, Vcc=6V~20V *Reverse voltage protection circuit is built-in. 1 TO-126B 1: Vcc 2: Control 3: GND 4: Motor BLOCK DIAGRAM VREF COM ×20 (K) 1 Vcc 2 Control 3 GND 4 Motor ABSOLUTE MAXIMUM RATINGS (Ta=25℃) PARAMETER SYMBOL RATINGS UNIT V A W °C °C Supply Voltage Vcc 22 Supply Current Icc *2 1.5 Power Dissipation PD *1 1.3 -20～+75 Operating Temperature Topr -40～+150 Storage Temperature Tstg *1. Ta = 25°C, With a 10×10mm bakelite printed circuit board (35µm Cu leaf) *2. t≤5s UTC UNISONIC TECHNOLOGIES CO., LTD. 1 QW-R109-011,,A UTC AN6652 PARAMETER Reference Voltage Bias Current Current Proportional Constant Saturation Voltage Voltage Characteristics (1) Voltage Characteristics (2) Current Characteristics (1) Current Characteristics (2) Temperature Characteristics (1) Temperature Characteristics (2) VREF IBias K Vsat LINEAR INTEGRATED CIRCUIT SYMBOL TEST CONDITIONS Vcc=12V,Ra=1kΩ Vcc=12V Vcc=12V, DI4=20mA Vcc=8.0V, Ra=18Ω Vcc=9V~16V, Ra=1kΩ Vcc=9V~16V, DI4=20mA I4=10 mA ~50mA I4=50mA~100mA Ta=-20℃~+75℃, Vcc=12V,Ra=1kΩ Ta=-20℃~+75℃, DI4=20mA ELECTRICAL CHARACTERISTICS (Ta=25℃) MIN 1.15 18 TYP 1.25 0.1 20 1 -0.02 0.2 -0.03 -0.01 0.01 0.01 MAX UNIT 1.40 1 22 2 0.6 0.7 0.1 V mA V %/V %/V %/mA △VREF Vcc VREF △K K Vcc -0.6 -0.7 -0.1 -0.15 △VREF I4 VREF △K I4 K △VREF Ta VREF △K Ta K 0.15 %/mA %/℃ %/℃ APPLICATION CIRCUIT Vcc RT 330Ω Micro M Motor Rs Ea Ra 22μH 2 UTC 1 AN6652 3 4 10μF Motor Constants Ka:Generation constant=2.4mV/rpm Ra:Internal resistor = 18Ω ． KT:Torque constant=200g cm/A UTC UNISONIC TECHNOLOGIES CO., LTD. 2 QW-R109-011,,A UTC AN6652 CHARACTERISTICS CURVE 1.6 1.4 1.2 Power Dissipatior, P (W) D 1.0 0.8 0.6 0.4 0.2 LINEAR INTEGRATED CIRCUIT PD -Ta (1) With a 10×10mm bakelite printed circuit board (35μm Cu leaf) (2) Without heat sink (1) (2) 0 -20 0 20 40 60 80 100 120 140160 180 Ambient Temperature, Ta ( ) ℃ UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. UTC UNISONIC TECHNOLOGIES CO., LTD. 3 QW-R109-011,,A