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KA3843AM 数据表(PDF) 1 Page - Wing Shing Computer Components |
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KA3843AM 数据表(HTML) 1 Page - Wing Shing Computer Components |
1 / 9 page Current Mode PWM Controller 1 PIN CONNECTION (TOP VIEW) DESCRIPTION are fixed frequency current mode PWM controller. They are specially designed for OFF −Line and DC to DC converter applications with a minimal external components. Internally implemented circuits include a trimmed oscillator for precise duty cycle control, a temperature compensated reference, high gain error amplifier, current sensing comparator, and a high current totempole output ideally suited for driving a power MOSFET. Protection circuitry includes built undervoltage lockout and current limiting. The corresponding thresholds for the can operate within 100% duty cycle. has Start-Up Current 0.17mA (typ). FEATURES • Low Start-Up and Operating Current • High Current Totem Pole Output • Undervoltage Lockout With Hysteresis • Operating Frequency Up To BLOCK DIAGRAM Absolute Maximum Ratings Characteristic Symbol Value Unit Supply Voltage (low impedance source) VCC 30 V Output Current IO ±1 A Input Voltage (Analog Inputs pins 2,3) VI −0.3 to 5.5 V Error Amp Output Sink Current ISINK (E.A) 10 mA Power Dissipation (TA=250C) PO 1 W Storage Temperature Range Tstg -65 to150 oC Lead Temperature (soldering 5 sec.) TL 260 oC KA3843A(AM) The KA3843AM The KA3843AM are 8.4V(on) and 7.6V (off) The KA3843AM The KA3843AM 500KHz |
类似零件编号 - KA3843AM |
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类似说明 - KA3843AM |
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