UM2640

UNISONIC TECHNOLOGIES CO., LTD UM2640 Preliminary TWO-PHASE UNIPOLAR DC BRUSHLESS MOTOR PRE-DRIVER IC „ DESCRIPTION UTC UM2640 is a 2-phase pre-driver IC for unipolar DC brushes motors. It features high voltage bipolar technology so that the driver works up to 48V. High voltage operation delivers more power and improves power supply efficiency. Therefore, it is suitable for high voltage fan motor applications. „ FEATURES * Wide supply voltage range of 4V~55V * Absolute Maximum Voltage 60V * Lock protection. Auto-restart when the motor lock is undone. * Lock Alarm Output Terminal „ ORDERING INFORMATION Ordering Number Lead Free Halogen Free UM2640L-SO8-R UM2640G-SO8-R UM2640L-SO8-T UM2640G-SO8-T Package SOP-8 SOP-8 CMOS IC Packing Tape Reel Tube www.unisonic.com.tw Copyright © 2011 Unisonic Technologies Co., Ltd 1 of 8 QW-R109-027.b UM2640 Preliminary „ PIN CONFIGURATION VCC 1 8 OUT2 H1 2 7 OUT1 LA 3 H2 4 6 Ct 5 GND „ PIN DESCRIPTION PIN NO. 1 2 3 4 5 6 7 8 PIN NAME VCC H1 LA H2 GND Ct OUT1 OUT2 Supply voltage Positive input for hall amplifiter Lock alarm output Negative input for hall amplifiter Ground Timing capacitance Output voltage Output voltage DESCRIPTION CMOS IC UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 8 QW-R109-027.b UM2640 „ BLOCK DIAGRAM Preliminary CMOS IC UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 8 QW-R109-027.b UM2640 Preliminary CMOS IC „ ABSOLUTE MAXIMUM RATING (TA=25°C) PARAMETER SYMBOL ...