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CS5155HGD16 Datasheet(PDF) 4 Page - Cherry Semiconductor Corporation |
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CS5155HGD16 Datasheet(HTML) 4 Page - Cherry Semiconductor Corporation |
4 / 14 page PARAMETER TEST CONDITIONS MIN TYP MAX UNIT 4 Package Pin Description PACKAGE PIN # PIN SYMBOL FUNCTION 16L SO Narrow 1,2,3,4,6 VID0 – VID4 Voltage ID DAC input pins. These pins are internally pulled up to 5V providing logic ones if left open. VID4 selects the DAC range. When VID4 is High (logic one), the DAC range is 2.14V to 3.54V with 100mV incre- ments. When VID4 is Low (logic zero), the DAC range is 1.34V to 2.09V with 50mV increments. VID0 - VID4 select the desired DAC output volt- age. Leaving all 5 DAC input pins open results in a DAC output voltage of 1.244V, allowing for adjustable output voltage, using a traditional resistor divider. 5 SS Soft Start Pin. A capacitor from this pin to LGnd in conjunction with internal 60µA current source provides soft start function for the con- troller. This pin disables fault detect function during Soft Start. When a fault is detected, the soft start capacitor is slowly discharged by internal 2µA current source setting the time out before trying to restart the IC. Charge/discharge current ratio of 30 sets the duty cycle for the IC when the regulator output is shorted. Electrical Characteristics: 0°C < TA < +70°C; 0°C < TJ < +125°C; 8V < VCC1 < 14V; 5V < VCC2 < 20V; DAC Code: VID4 = VID2 = VID1 = VID0 = 1; VID3 = 0; CVGATE(L) and CVGATE(H) = 1nF; COFF = 330pF; CSS = 0.1µF, unless otherwise specified. s Soft Start (SS) Charge Time 1.6 3.3 5.0 ms Pulse Period 25 100 200 ms Duty Cycle (Charge Time/Pulse Period) × 100 1.0 3.3 6.0 % COMP Clamp Voltage VFB = 0V; VSS = 0 0.50 0.95 1.10 V VFFB SS Fault Disable VGATE(H) = Low; VGATE(L) = Low 0.9 1.0 1.1 V High Threshold 2.5 3.0 V s PWM Comparator Transient Response VFFB = 0 to 5V to VGATE(H) = 9V to 1V; 100 125 ns VCC1 = VCC2 = 12V VFFB Bias Current VFFB = 0V 0.3 µA s Supply Current ICC1 No Switching 8.5 13.5 mA ICC2 No Switching 1.6 3.0 mA Operating ICC1 VFB = COMP = VFFB 813 mA Operating ICC2 VFB = COMP = VFFB 25 mA s COFF Normal Charge Time VFFB = 1.5V; VSS = 5V 1.0 1.6 2.2 µs Extension Charge Time VSS = VFFB = 0 5.0 8.0 11.0 µs Discharge Current COFF to 5V; VFB >1V 5.0 mA s Time Out Timer Time Out Time VFB = VCOMP; VFFB = 2V; 10 30 65 µs Record VGATE(H) Pulse High Duration Fault Mode Duty Cycle VFFB = 0V 35 50 70 % Note 1: Guaranteed by design, not 100% tested in production. |
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