LM2470 Datasheet | National Semiconductor

Description The LM2470 is an integrated high voltage CRT driver circuit designed for use in color monitor applications. The IC contains three high input impedance, wide band amplifiers which directly drive the RGB cathodes of a CRT. Each channel has its gain internally set to - 27 and can drive CRT capacitive loads as well as resistive loads present in other applications, limited only by the package’s power dissipation. The IC is packaged in an industry standard 9-lead TO-220 molded plastic power package. See the Thermal Considerations section for more information. Features Well matched to the LM1236/46 CMOS preamplifiers Swing up to 60PP (15V - 75V) 0V to 3.75V input range Stable with 0- 20 p F capacitive loads and inductive peaking networks n Convenient TO-220 staggered lead package style n Maintains standard LM246X Family pinout which is designed for easy PCB layout n n n n Applications n 1024 x 768 displays up to 85 Hz refresh n Pixel clock frequencies up to 95 MHz n Monitors using video blanking Schematic Diagram ta S hee t4U .co m FIGURE 1. Simplified Schematic Diagram (One Channel) w.D a ww © 2004 National Semiconductor Corporation DS200871 .national. .. Connection Diagram Note: Tab is at GND Top View Order Number LM2470TA w.D a ta S hee t4U .co .national. m ww .. Absolute Maximum Ratings 3) (Notes 1, Machine Model 250V If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage (VCC) Bias Voltage (VBB) Input Voltage (VIN) Storage Temperature Range (TSTG) Lead Temperature (Soldering, < 10 sec.) ESD Tolerance, Human Body Model 300˚C 2 k V +96V +16V 0V to 4.5V - 65˚C to +150˚C Operating Ranges (Note 2) VCC VBB VIN VOUT Case Temperature +60V to +85V +7V to +15V +0V to +3.75V +15V to +75V - 20˚C to +100˚C Do not operate the part without a heat sink. Electrical Characteristics (See Figure 2...