UTC6651

UTC6651 MOTOR SPEED CONTROL CIRCUIT DESCRIPTION LI NEAR I NTEGRATED CI RCUI T The UTC6651 is a monolithic integrated circuit designed for the rotating speed control of a compact DC motor which is used for a tape recorder, recoder player etc. 1 FEATURES * Wide operating supply voltage:Vcc=3.5V- 14.4V * Small four-lead plastic package for compact motor. * Few external components * Stable low reference voltage( 1.0V, typical ), * Wide motor speed setting * Reverse voltage protection circuit built-in. * TO-126B BLOCK DIAGRAM CONTROL 2 VREF 4 MOTOR VCC 1 COM 3 GND YOUW ANG ELECTRONI CS CO. LTD 1 UTC6651 Characteristic Symbol LI NEAR I NTEGRATED CI RCUI T Value 14.4 2000 1300 -20 ~ +75 -40 ~ +150 ABSOLUTE MAXIMUM RATINGS(Ta=25°C) Unit V mA mW °C °C Supply Voltage VCC Supply Current(note 1) Icc Power Dissipation(note 2) PD Operating Temperature Topr Storage Temperature Tstg NOTE: 1. Ta=25°C,with a 10x10 mm bakelite PCB(3.5µm Cu leaf) 2. Test time < 5seconds. ELECTRICAL CHARACTERISTICS(Ta=25°C,unless otherwise specified) Characteristic 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 Symbol VREF IBias K VSAT ∆V REF VREF ∆K K ∆V REF VREF ∆K K ∆V REF VREF ∆K K Ta Ta I4 I4 Vcc Vcc VCC=6V Ra=1kΩ Vcc=6V Vcc=6V,DI4=40mA VCC=4.2V,Ra=5.0Ω Test Conditions Min 0.85 35 Typ 1.0 0.8 40 ...