LM2438 Datasheet | National Semiconductor

Description The LM2438 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 - 14 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 Thermal Considerations section. Features n Well matched with LM1279 video preamp n 0V to 5V input range n Stable with 0- 20 p F capacitive loads and inductive peaking networks n Convenient TO-220 staggered lead package style n Standard LM243X Family Pinout which is designed for easy PCB layout Applications n 1024 x 768 displays up to 60 Hz refresh n Pixel clock frequencies up to 60 MHz n Monitors using video blanking Schematic and Connection Diagrams DS101043-2 Note: Tab is at GND Top View Order Number LM2438T DS101043-1 FIGURE 1. Simplified Schematic Diagram (One Channel) © 1999 National Semiconductor Corporation DS101043 .national. Absolute Maximum Ratings (Notes 1, 3) 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) +90V +16V 0V to 6V - 65˚C to +150˚C Lead Temperature (Soldering, < 10 sec.) ESD Tolerance, Human Body Model Machine Model 300˚C 2 k V 250V Operating Ranges (Note 2) VCC +60V to +85V +8V to +15V VBB +0V to +5V VIN +15V to +75V VOUT Case Temperature - 20˚C to +100˚C Do not operate the part without a heat sink. Electrical Characteristics (See Figure 2 for Test Circuit) Unless otherwise noted: VCC = +80V, VBB = +12V, CL = 8 p F, TC = 50˚C; DC Tests: VIN = 2.8 VDC; AC Tests: Output = 40 VPP (25V- 65V) at 1 MHz. Symbol ICC IBB VOUT AV ∆AV LE t R...