CS5124

CS5124 High Performance, Integrated Current Mode PWM Controllers The CS5124 is a fixed frequency current mode controller designed specifically for DC−DC converters found in the telecommunications industry. The CS5124 integrates many commonly required current mode power supply features and allows the power supply designer to realize substantial cost and board space savings. The CS5124 integrates the following features: Internal Oscillator, Slope Compensation, Sleep On/Off, Undervoltage Lock Out, Thermal Shutdown, Soft−Start Timer, Low Voltage Current Sense for Resistive Sensing, Second Current Threshold for Pulse−by−Pulse overcurrent Protection, a Direct Optocoupler Interface and Leading Edge Current Blanking. The CS5124 has supply range of 7.7 V to 20 V and is available in 8 pin SOIC narrow package. Features 400 kHz Oscillating Frequency Line UVLO Monitoring Low Current Sense Voltage for Resistive Current Sensing Bias for Startup Circuitry Thermal Shutdown Sleep On/Off Pin Soft−Start Timer Leading Edge Blanking Direct Optocoupler Interface 90 ns Propagation Delay 35 ns Driver Rise and Fall Times Sleep Mode Pb−Free Packages are Available http://onsemi.com 8 1 SOIC−8 D SUFFIX CASE 751 PIN CONNECTIONS AND MARKING DIAGRAM 1 VCC BIAS UVLO SS CS512 ALYW4 G 8 GND GATE ISENSE VFB A = Assembly Location L = Wafer Lot Y = Year W = Work Week G = Pb−Free Package ORDERING INFORMATION Device Package Shipping† CS5124XD8 SOIC−8 95 Units/Rail ...