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CS51021 Datasheet(PDF) 2 Page - Cherry Semiconductor Corporation |
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CS51021 Datasheet(HTML) 2 Page - Cherry Semiconductor Corporation |
2 / 9 page Power Supply Voltage, VCC ............................................................................................................................................-0.3V, 20V Driver Supply Voltage, VC ..............................................................................................................................................-0.3V, 20V SYNC, SLEEP, RTCT, SOFT START, VFB, SLOPE, ISENSE, UV, OV, ISET (Logic Pins).......................................-0.25V to VREF Peak GATE Output Current.........................................................................................................................................................1A Steady State Output Current..................................................................................................................................................± 0.2A Operating Junction Temperature, TJ..................................................................................................................................... 150°C Storage Temperature Range, TS...................................................................................................................................-65 to 150°C ESD (Human Body Model).........................................................................................................................................................2kV Lead Temperature Soldering: Reflow (SMD styles only).............................................60 sec. max above 183°C, 230°C peak PARAMETER TEST CONDITIONS MIN TYP MAX UNIT 2 Absolute Maximum Ratings s Under Voltage Lockout START Threshold (CS51021/22) 7.95 8.25 8.8 V START Threshold (CS51023/24) 12.4 13 13.4 V STOP Threshold 7.4 7.7 8.2 V Hysteresis (CS51021/22) 0.50 0.75 1.00 V Hysteresis (CS51023/24) 4 5 6 V ICC @ Startup (CS51021/22) VCC < UVSTART Threshold 40 75 µA ICC @ Startup (CS51023/24) VCC < UVSTART Threshold 45 75 µA ICC Operating (CS51021/23) 7 9 mA ICC Operating (CS51022/24) 6 8 mA IC Operating Includes 1nF Load 7 12 mA s Voltage Reference Initial Accuracy TA = 25C, IREF = 2mA, VCC = 14V (Note1) 4.95 5 5.05 V Total Accuracy 1mA<IREF<10mA 4.9 5 5.15 V Line Regulation 8.2V < VCC < 18V, IREF = 2mA 6 20 mV Load Regulation 1mA < IREF < 10mA 6 15 mV NOISE Voltage (Note 1) 50 uV OP Life Shift T=1000 Hours (Note 1) 4 20 mV FAULT Voltage Force VREF .92 × VREF .95 × VREF .97 × VREF V OK Voltage Force VREF .94 × VREF .96 × VREF .98 × VREF V OK Hysteresis Force VREF 50 105 160 mV Current Limit Force VREF -20 mA s Error Amplifier Initial Accuracy TA=25°C, IREF = 2mA, VCC = 14V, 2.465 2.515 2.565 V VFB = COMP (Note 1) Reference Voltage VFB = COMP 2.440 2.515 2.590 V VFB Leakage Current VFB = 0V -0.2 -2 µA Open Loop Gain 1.4V < COMP < 4V (Note 1) 60 90 dB Unity Gain Bandwidth (Note 1) 1.5 2.5 MHz COMP Sink Current COMP = 1.5V, VFB = 2.7V 2 6 mA COMP Source Current COMP = 1.5V, VFB = 2.3V -0.2 -0.5 mA Electrical Characteristics: Unless otherwise stated, specifications apply for -40°C < TA < 85°C, -40°C < TJ < 150°C, 3V < VC < 20V, 8.2V < VCC < 20V, RT = 12kΩ, CT = 390pF. |
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