UTC6650 LINEAR | Alldatasheet

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Technical content

YOUW ANG ELECTRONICS CO.LTD 1 MOTOR SPEED CONTROL CIRCUIT

DESCRIPTION

The UTC6650 is a monolithic integrated circuit designed for the tape recorder.

FEATURES

*Wide operating supply voltage:Vcc=1.8V- 7V *Few external components *Easy Speed control mode DIP-8 BLOCK DIAGRAM Reference Voltage Start circuit VREF- VREF+ VCC GND GND PHASE MOTOR COMP. INPUT 10kΩ 1kΩ

YOUW ANG ELECTRONICS CO.LTD 2 ABSOLUTE MAXIMUM RATINGS(Ta=25°C) Characteristic Symbol Value Unit Supply Voltage VCC 7.5 V Terminal Voltage Vn(n=1,2,3,4) -0.5~7.5 V Terminal 8 Voltage -0.5~1 V Supply Current Icc 1000 mA Terminal 7 Current 1000 mA Power Dissipation PD 750 mW Operating Temperature Topr -20 +70 Storage Temperature Tstg -40 +150

ELECTRICAL CHARACTERISTICS

(Ta=25°C,VCC=6V,f=1kHz,unless otherwise specified) Characteristic Symbol Test Conditions Min Typ Max Units Test circuit Quiescent Circuit Current ICC VCC=3V mA Reference Voltage VREF VCC=3VR2-1>10kΩ 1.20 1.28 1.35 V Start Voltage VCC(S) 30mA current flow to Ra 1.0 1.2 V Saturation Voltage VSAT VCC=1.8V,Ra=4.7Ω 0.2 0.5 V Reference Voltage Characteristics VREF VREF VCC VCC=1.8V~7.0V -1.25 0.1 1.25 %/V Output Voltage Characteristics VA VA VCC VCC=1.8V~7.0V -1.2 0.1 1.2 %/V Reference Voltage Current Characteristics VREF VREF I7=1mA~20mA -0.2 0.01 0.2 %/mA Reference Voltage Temperature Characteristics VREF VREF TA TA=-20~+60°CVCC=3.0V 0.01 %/°C

YOUW ANG ELECTRONICS CO.LTD 3 TEST CIRCUIT A VCC 10kΩ 0.1µF 1µF V 1µF 0.1µF 4.7Ω Ra VCC 0.47Ω 9.1kΩ 1kΩ Fig.1 Fig.2 1µF 0.1µF VCC 10Ω 9.1kΩ 1kΩ 1µF 0.1µF 4.7Ω Ra VCC 10Ω 9.1kΩ 1kΩ Va V A Fig.3 Fig.4

YOUW ANG ELECTRONICS CO.LTD 4 APPLICATION CIRCUIT UTC6650 M 1000pF 0.1µF Ro=4Ω 1kΩ 510Ω 0.4Ω 1µF Vcc 9.1kΩ