Maker : Sanyo
Part No. : LA7838

  Datasheet PDF : LA7838.pdf
  Cross Reference : LA7838 Cross Reference
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Product Information

Ordering number:ENN3313C Monolithic Linear IC www.DataSheet4U.com LA7837, 7838 Vertical Deflection Circuit with TV/CRT Display Drive Overview The LA7837, 7838 are vertical deflection output ICs developed for use in high-grade TVs and displays. The interlace and crossover distortion responses, in particular, have been greatly improved, allowing excellent picture quality on large size televisions and high precision interlace mode displays. Also, pulse signals can be used for input signals due to the on-chip sawtooth wave generating circuit and driver circuit. Further, the DC and AC feedback circuit can be formed with these ICs alone, simplifying pattern design of sets and ensuring stable performance. All of the functions in a color TV signal system can be processed by connecting these ICs with SANYO’s single-chip IC LA7670 series (NTSC) and LA7680/85 series (PAL/NTSC) (VIF/SIF, video, chroma, deflection). The LA7837 has a maximum deflection current of 1.8App, making it appropriate for use in portable to mid-size televisions. The LA7838 has a miximum deflection current of 2.2App, so it can be used for large size sets, and can drive from 33 to 37 inches. Package Dimensions unit:mm 3107-SIP13H [LA7837, 7838] 25.6 3.4 10.0 2.0 2.4 1.0min 1 0.8 2.0 0.5 13 1.15 0.4 1.2 SANYO : SIP13H Features • Low power dissipation due to on-chip pump-up circuit. • On-chip 50/60Hz vertical size control circuit. • On-chip sawtooth wave generating circuit. • On-chip driver circuit. • Vertical output circuit. • On-chip thermal protection circuit. • Excellent interlace response. • Excellent crossover response. Any and all SANYO products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft’s control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO representative nearest you before using any SANYO products described or contained herein in such applications. SANYO assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges,or other parameters) listed in products specifications of any and all SANYO products described or contained herein. SANYO Electric Co.,Ltd. Semiconductor Company TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN 12501TN (KT)/71693TS/8251TS(KOTO)/2090TA, TS(AF) No.3313–1/9 4.5 13.9 11.2 11.8 15.4max LA7837, 7838 Specifications www.DataSheet4U.com Maximum Ratings at Ta = 25˚C Parameter Driver supply voltage Pump-up supply voltage Output supply voltage Deflection output current Thermal resistance Allowable power dissipation Operating temperature Storage temperature Symbol +VCC1 max +VCC8 max +VCC13 max Conditions Ratings 15 30 62 –1.5 to +1.5 4 Unit V V V Ap-o ˚C/W IDEF θj-c Pd max Topr Tstg With infinite heat sink 8 –20 to +85 –40 to +150 W ˚C ˚C Operating Conditions at Ta = 25˚C, parenthesis ( ) indicates LA7838. Parameter Recommended driver supply voltage Operating driver supply voltage Recommended pump-up supply voltage Operating pump-up supply voltage Deflection output current Operating ramp waveform pulse height Symbol +VCC1 +VCC1 +VCC8 +VCC8 I12p-p V6p-p Conditions Ratings 12 8 to 14 24 10 to 27 up to 1.8 (2.2) up to {(+B1/3)–1.0} Unit V V V V Ap-p Vp-p Operating Characteristics at Ta = 25˚C, +VCC1=12V, +VCC8=24V, parenthesis ( ) indicate LA7838. Parameter Driver supply current Trigger input threshold voltage Vertical amplitude control pin voltage Ramp waveform Generation start voltage Pump-up charge saturation voltage Pump-up discharge saturation voltage Deflection output saturation voltage (lower) Deflection output saturation voltage (upper) Idling current Voltage gain Symbol ICC1 V2 V4 VRAMP Vs9-11 ...

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