BA9756FS

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 !Block diagram 20 VCC1 19 18 17 16 15 VCC2 14 13 12 11 !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%. 1 2 Buffer – + + + – SAW GEN. M/M 9.0V REF GND 3 4 5 6 7 8 9 10 !Absolute maximum ratings (Ta=25°C) Parameter Power supply voltage 1 Power supply voltage 2 Power dissipation Operating temperature Storage temperature Symbol VCC1 VCC2 Pd Topr Tstg Limits 18 20 750*1 - 25~+80 - 55~+125 Unit V V mW ˚C ˚C *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. !Recommended operating conditions (Ta=25°C) Parameter Power supply voltage 1 Power supply voltage 2 Symbol VCC1 VCC2 Min. 11 11 Typ. Max. 17 17 Unit V V BA9756FS Multimedia ICs !Pin descriptions Pin No. 1 2 3 4 5 6 Pin name ERRIN This is the recovery voltage ...