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| NJM2642 Preliminary 2-Phase DC Brushless Motor Pre-driver IC I GENERAL DESCRIPTION I PACKAGE OUTLINE The NJM2642 is a 2-phase DC brushless motor pre-driver IC. It incorporates Lock Detect / Auto Protection Circuit and totem-pole pre- drivers for external power MOS-FET. The turn ON/ turn OFF ratio at Auto Protection Release was set in 1:10 easy-to-use. Two comparator are built into NJM2642 for the temperature NJM2642V adjustable speed control or over current detection. I FEATURES 4 to 14V * Operating Voltage * Absolute Maximum Voltage 15V * Totem-pole Output * Internal Lock Detect /Auto Protection Release Circuit * Lock Alarm Output Terminal * Internal comparator 2 circuit * Package Outline SSOP16 I PIN CONFIGURATION 1 16 2 15 3 14 4 13 5 12 6 11 1.Vcc 2.H1 3.H2 4.H3 5.LA 6.C2 OUT 7.C2 IN+ 8.C2 IN - 9. C1 IN 10.C1 IN+ 11.C1 OUT 12.Ct 13.GND 14.OUT1 15.OUT2 16.UH 7 10 8 9 NJM2642V Ver.2004-04-07 -1- NJM2642 Preliminary I BLOCK DIAGRAM VCC VM NJM2642 R1 IN2 IN1 Reference Bias Motor OUT1 H H1 H2 VCC C Hall Amp. Control LOGIC Ct Lock Detect & Re-start OUT2 PWM COMP External circuit + OSC + GND Lock LA Alarm Thermistor -2- Ver.2004-04-07 NJM2642 Preliminary I ABSOLUTE MAXIMUM RATINGS PARAMETER Supply Voltage Hall Input Voltage Range Output Current Lock Alarm Output Voltage Hall Input Differential Voltage Lock Alarm Output Current Power Dissipation Operating Temperature Range Operating Junction Temperature Range Storage Temperature Range SYMBOL Vcc VIH IOUT VLA VIHL ILA PD Topr Tj Tstg RATINGS 15 -0.3 Vcc 30 15 2 20 300 -40 85 -40 150 -55 150 UNIT V V mA V V mA mW C C C (Ta=25C) NOTE Device it self - I RECOMMENDED OPERATING CONDITIONS PARAMETER Supply Voltage Hall Input Common Mode Voltage Junction Temperature SYMBOL Vcc VICM Tj RATINGS 4 14 0 Vcc-2 -40 125 UNIT V V C (Ta=25C) NOTE - Ver.2004-04-07 -3- NJM2642 Preliminary I ELECTRICAL CHARACTERISTICS PARAMETER SYMBOL Operating Current Icc CONDITIONS Vcc=12V Vcc=5V IOUT=-20mA Iout=20mA Lock Alarm ON, ILA=5mA VLA=15V VCT=1.5V VCT=1.5V Ct=0.47F Ct=0.47F Vo=1.5V Isink=3mA Vo=12V MIN. 8 0 10 10.0 2.30 0.78 0 10 6 - (Ta=25C, VCC=12V) TYP. MAX. UNIT 8.5 12.0 mA 7.5 20 0.5 10.3 0.5 1 4.0 0.4 10 2.65 0.92 0.25 2.5 1 250 10 80 0.1 10.5 32 0.8 0.5 5 5.5 0.6 3.00 1.05 5 500 300 1 V V s s mV nA V V mV uA mA mV A V V V V A A A I Hall Amplifier Input Hysteresis Voltage Input Bias Voltage Common Monde Voltage VHYS IB Vicmh VoH VoL VLA ILAleak Ic Idc Ic/Idc Vch Vcl Ton Toff Vio Iib Vicm Isink Vsat ILEAK I Output Upper Output Voltage Under Output Voltage I Alarm Output Voltage Leak Current I Ct Charge Current Discharge Current Charge / Discharge Current Ratio H Level Cense Voltage Reversal Voltage Auto Protection Release ON Time Auto Protection Release OFF Time I Comparator Input Offset Voltage Input Bias Current Input Common Monde Voltage Range Output Sink Current Output Saturation Voltage Output Leak Current A charge and discharge current ratio is set in general to a minimum of 7 and a maximum of 14. [CAUTION] The specifications on this databook are only given for information , without any guarantee as regards either mistakes or omissions. The application circuits in this databook are described only to show representative usages of the product and not intended for the guarantee or permission of any right including the industrial rights. -4- Ver.2004-04-07 |
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