LA7840

Ordering number: EN5147B Monolithic Linear IC LA7840 Vertical Deflection Output Circuit Overview The LA7840 is a vertical deflection output IC for TVs and CRT displays with excellent image quality that use a BUS control system signal processing IC. This IC can drive the direct (even including a DC component) deflection yoke with the sawtooth wave output from the BUS control system signal processing IC. When used in conjunction with Sanyo’s LA7615 series of BUS control system signal processing ICs for TVs, this IC can process all color television signal system functions through the BUS system. Because the maximum deflection current is 1.8 Ap-p, the LA7840 is suited for small and medium screen sets. Package Dimensions unit : mm 3075-SIP7H [LA7840] Features . Low power dissipation due to built-in pump-up circuit . Vertical output circuit . Thermal protection circuit built in . Excellent crossover characteristics . DC coupling possible Specifications Maximum Ratings at Ta = 25 °C Parameter Maximum supply voltage Output block supply voltage Deflection output current Thermal resistance Allowable power dissipation Operating temperature Storage temperature Symbol VCC6 max VCC3 max I 2 max θj-c Pd max Topr Tstg With arbitrarily large heat sink Conditions Ratings SANYO : SIP7H Unit V V Ap-o °C/W W °C °C 34 70 –1.5 to +1.5 4.0 9 –20 to +85 –40 to +150 Operating Conditions at Ta = 25 °C Parameter Recommended supply voltage Operating supply voltage range Recommended deflection output current Symbol VCC6 VCC6 op I 2 p-p Conditions Ratings 24 16 to 33 to 1.8 Unit V V Ap-p SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN D1096HA(II)/61595HA(II) No.5147-1/4 LA7840 Operating Characteristics at Ta = 25 °C, VCC6 = 24 V Parameter Pump-up charge saturation voltage Pump-up discharge saturation voltage Deflection output saturation voltage (lower) Deflection output saturation voltage (upper) Idling current Midpoint voltage Symbol VS7-1 VS6-7 VS2-1 VS3-2 IDL VMID I 7 = 20 mA I 7 = –0.9 A I 2 = 0.9 A I 2 = –0.9 A 35 11.0 Conditions min typ max 1.8 3.0 1.3 3.2 65 13.0 Unit V V V V mA V 12.0 Block Diagram Sample Application Circuit (Single power supply) No.5147-2/4 LA7840 Sample Application Circuit (Double power supply) Sample Application Circuit Unit (resistance: Ω, capacitance: F) No.5147-3/4 LA7840 No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of which may directly or indirectly cause injury, death or property loss. Anyone purchasing any products described or contained herein for an above-mentioned use shall: 1 Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors and all their officers and employees, jointly and severally, against any and all claims and litigation and all damages, cost and expenses associated with such use: 2 Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees jointly or severally. Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. This catalog provides information as of December, 1996. Specifications and information herein are subject to change without notice. No.5147-4/4