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BA9756FS 데이터시트(PDF) 1 Page - Rohm |
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1 / 9 page BA9756FS Multimedia ICs High-voltage control circuit for CRT displays BA9756FS The BA9756FS is LSIs that control CRT anode voltage in multi-scan monitors and similar devices, using a chopper-type voltage control circuit. The internal sawtooth wave generator circuit uses automatic gain control (AGC) to enable coverage of a wide range from 30kHz to over 150kHz. The BA9756FS is equipped with an internal high-precision voltage source featuring an output voltage precision of ± 0.7%. !Applications CRT displays, HDTVs, others !Features 1) Internal chopper-type voltage control circuit. 2) Internal buffer circuit enables direct drive of Power MOSFET for output drive. 3) Internal high-precision voltage source offers output voltage precision of ± 0.7%. !Block diagram M / M GND 9.0V REF VCC1VCC2 Buffer + + – SAW GEN. 20 1 19 2 18 3 17 4 16 5 15 6 14 7 13 8 12 9 11 10 !Absolute maximum ratings (Ta=25°C) Parameter Symbol Limits Unit VCC1 VCC2 Pd Topr Tstg - 25~+80 Power supply voltage 1 Power supply voltage 2 Power dissipation Operating temperature Storage temperature *1 *1 When mounted on a 70mm × 70mm × 1.6mm glass epoxy board. Reduced by 7.5mW for each increase in Ta of 1˚C over 25˚C. 18 20 750 - 55~+125 V V ˚C ˚C mW !Recommended operating conditions (Ta=25°C) Parameter Symbol Unit Max. Typ. Min. VCC1 VCC2 11 11 - - V V 17 17 Power supply voltage 1 Power supply voltage 2 |
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