CS5126

www.DataSheet4U.com CS5124, CS5126 High Performance, Integrated Current Mode PWM Controllers The CS5124/6 is a fixed frequency current mode controller designed specifically for DC−DC converters found in the telecommunications industry. The CS5124/6 integrates many commonly required current mode power supply features and allows the power supply designer to realize substantial cost and board space savings. The product matrix is as follows: CS5124: 400 kHz w/VBIAS Pin, 195 mV first current sense threshold. CS5126: 200 kHz w/SYNC Pin, 335 mV first current sense threshold. The CS5124/6 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 CS5124/6 has supply range of 7.7 V to 20 V and is available in 8 pin SOIC narrow package. Features http://onsemi.com 8 1 SOIC−8 D SUFFIX CASE 751 PIN CONNECTIONS AND MARKING DIAGRAM 1 CS5124 8 CS512 ALYW4 G 1 CS5126 8 5126 ALYW G VCC BIAS UVLO SS GND GATE ISENSE VFB Line UVLO Monitoring Low Current Sense Voltage for Resistive Current Sensing External Synchronization to Higher or Lower Frequency Oscillator (CS5126 Only) Bias for Startup Circuitry (CS5124 Only) Thermal Shutdown Sleep On/Off Pin Soft−Start Timer Leading Edge Blanking Direct...