NJM2644

NJM2644 www.DataSheet4U.com Two-phase Unipolar DC Brushless Motor Pre-Driver IC s GENERAL DESCRIPTION s PACKAGE OUTLINE The NJM2644 is a 2-phase DC brushless motor pre-driver IC. It incorporates Lock Detect and Auto Protection circuit for safety operation. Especially, 1:10 ON/OFF duty ratio while motor is locked reduces heat generation in motor windings. Moreover, the pin is compatible with 12V LA output NJM2644M NJM2644RB1 two-phase pre-driver NJM2641. It is suitable for 12V fan motor applications. s FEATURES Operating Voltage VDD=4 to 14V Absolute Maximum Voltage 15V Internal Lock Detect / Auto Protection Release Circuit FG Output Terminal Package Outline DMP8 / TVSP8 s BLOCK DIAGLAM s PIN FUNCTION 1 2 3 4 1: Vcc 2: H1 3: FG 4: H2 5: GND 6: Ct 7: OUT1 8: OUT2 8 7 6 5 FG -1- NJM2644 www.DataSheet4U.com s ABSOLUTE MAXIMUM RATINGS PARAMETER Supply Voltage Hall Input Voltage Range Output Current (Peak) Lock Alarm Output Voltage Hall Input Differential Voltage Lock Alarm Output Current Operating Temperature Range Operating Junction Temperature Range Storage Temperature Range Power Dissipation SYMBOL Vcc VIH IO UT VOLA VIHD IOLA Topr Toj Tstg PD RATINGS 15 -0.3 ∼ VCC 70 15 2 10 -40 ∼ 85 -40 ∼ 150 -55 ∼ 150 375(DMP8) / 400(TVSP8) (Ta=25°C) UNIT NOTE V V mA V V mA °C °C °C mW Device itself s RECOMMENDED OPERATING CONDITIONS PARAMETER SYMBOL Supply Voltage Hall Input Voltage Common Mode Voltage Junction Temperature Vcc VICM Tj RATINGS 4 ∼ 14 1.5 ∼ Vcc-2 -20 ∼ 1...