AN6651

AN6651 LINEAR INTEGRATED CIRCUIT MOTOR SPEED CONTROL CIRCUIT DESCRIPTION The AN6651 is a monolithic integrated circuit designed for the rotating control of a compact DC motor which is used for a tape recorder, recorder player etc. FEATURES *Wide operating supply voltage: Vcc=3.5V ~ 14.4V *Small four-lead plastic packer for compact motor. *Few external components *Stable low reference voltage (1.0V, typical) *Wide motor speed setting *Reverse voltage protection circuit built-in 1: Vcc 1 TO-126B 2: CONTROL 3: GND 4: MOTOR BLOCK DIAGRAM Wing Shing Computer Components Co., (H.K.)Ltd. Homepage: http://www.wingshing.com Tel:(852)2341 9276 Fax:(852)2797 8153 E-mail: ic@wingshing.com AN6651 PARAMETER Supply Voltage Supply Current (note 1) Power Dissipation (Ta=25°C) (note 2) Operating Temperature Storage Temperature Terminal Voltage Terminal Current Terminal Current Terminal Current (note 1) Terminal Current (note 1) LINEAR INTEGRATED CIRCUIT SYMBOL VCC ICC PD TOPR TSTG Vn-3 (n=1,2,4) I1 I2 I3 I4 ABSOLUTE MAXIMUM RATINGS (Ta=25°C) VALUE 14.4 2000 1300 -20 to +75 -40 to +150 -0.5 to +14.4 150 100 -2000 (MIN.) 1750 UNIT V mA mW °C °C V mA mA mA mA Note 1: t≤5 sec Note 2: Ta=25°C, with a 10 x 10 mm bakelite PCB (3.5µm Cu leaf) ELECTRICAL CHARACTERISTICS (Ta=25°C, unless otherwise specified) PARAMETER Reference Voltage Base Current Current Proportional Constant Saturation Voltage Voltage Characteristics 1 SYMBOL Vref Ibias K VSAT ∆VREF VREF ∆Vcc TEST CONDITIONS VCC=6V, Ra=1kΩ VCC=6V VCC=6V, ∆I4=40mA VCC=4.2V,Ra=5.0Ω VCC=3.5V~14V Ra=1kΩ MIN 0.85 35 TYP 1.00 0.8 40 1.15 -0.1 MAX 1.15 1.8 45 2.0 UNIT V mA V %/V Voltage Characteristics 2 ∆K K ∆Vcc VCC=3.5V~14V ∆I4=40mA 0.2 %/V Current Characteristics 1 ∆VREF VREF ∆I4 I4=50mA~200mA -0.02 %/mA Current Characteristics 2 ∆K K ∆I4 I4=50mA~200mA -0.01 %/mA Temperature Characteristics 1 ∆VREF VREF ∆Ta Ta=-20~+75°C VCC=6V Ra=1kΩ 0.01 %/°C AN6651 PARAMETER Temperature Characteristics 2 LINEAR INTEGRATED CIRCUIT SYMBOL ∆K K ∆Ta TEST CONDITIONS Ta=-20~+75°C ∆I4=40mA MIN TYP 0.01 MAX UNIT %/°C CHARACTERISTICS CURVE APPLICATION CIRCUIT