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| 99W031A High reliability 2-phase half-wave motor pre-driver BA6409F Description The BA6409F is a two-phase half-wave motor predriver for fan motors. The built-in protection diode eliminates an external diode and the concern of connecting in reverse when fan motors equipped. The device also has a lock-up detector and automatic restart function. There is a lock-up detector output pin on the IC. Features 1) Built-in discrete diode for reverse connection protection. (Maximum reverse connection protection voltage: 80V) 2) Lock-up detector function & lock-up detector output pin. 3) Compact SOP8-pin package. Fewer external components make mounting spaces smaller. 4) Automatic restart when lock-up is removed. 5) Hall element input hysteresis circuit is built-in. Applications Two-phase half-wave motor pre-driver for fan motor Absolute Maximum Ratings (Ta=25C) Parameter Applied voltage Power dissipation Operating temperature Storage temperature Output current Junction temperature Symbol VCC Pd Topr Tstg IOMAX Tjmax Limits 30 550 * -30 ~ +75 -55 ~ +125 70 125 Unit V mW C C mA C Dimension (Units : mm) SOP8 *Derating : 5.5mW/C for operation above Ta=25C (Mounted on a 70.0mm70.0mm1.6mm glass epoxy PCB.) 1999 5 22 Recommended Operating Conditions (Ta=25C) Parameter Supply voltage Input voltage * Symbol VCC VBH Min. 5.2 1.0 Typ. -- -- Max. 28 Vcc-1.7 Unit V V *Input voltage includes signal amplitude. Electrical Characteristics (Unless otherwise noted, Ta=25 C, Vcc=12V) Parameter Circuit current Hall amplifier input hysteresis (+) Hall amplifier input hysteresis (-) Symbol ICC Vhya+ Vhya- V3L I3 I6C I6d rcd V6cL V6cp V7H V8H Min. -- +3 -3 -- 8.0 2.0 0.35 3 2.2 0.4 8.8 8.8 Typ. 3.2 -- -- -- -- 3.45 0.80 4.5 2.6 0.6 9.8 9.8 Max. 5.0 +15 -15 0.5 -- 5.25 1.45 8 3.0 0.8 -- -- Unit mA mV mV V mA A A -- V V V V Io=10mA Io=10mA Output off Conditions VB=6V (Voltage on Pin2 with respect to Pin4) VB=6V (Voltage on Pin2 with respect to Pin4) I3L=5.0mA V3L=2.0V V6PIN=1.5V V6PIN=1.5V I6c/I6d Pin3 "L"output voltage Pin3 current capacity Pin6 charge current Pin6 discharge current Pin6 charge/discharge current ratio Pin6 clamp voltage Pin6 comparater voltage Pin7 "H"output voltage Pin8 "H"output voltage * The products described herein are not designed to be X ray proof. Application circuit Vcc 8 7 6 5 AUTOMATIC RESET CIRCUIT LOGIC LOCK DETECTION REGULATOR Hall AMP 1 2 3 4 HALL ELEMENT |
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