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ISL6721AAVZ Datasheet(PDF) 8 Page - Renesas Technology Corp |
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ISL6721AAVZ Datasheet(HTML) 8 Page - Renesas Technology Corp |
8 / 24 page ISL6721A FN6797 Rev 0.00 Page 8 of 24 August 23, 2011 Output Pulse Width CSYNC = 100pF 50 -- ns SOFT-START Charging Current SS = 2V -40 -55 -70 µA Charged Threshold Voltage 4.26 4.50 4.74 V Initial Overcurrent Discharge Current Sustained OC Threshold < SS < Charged Threshold 30 40 55 µA Overcurrent Shutdown Threshold Voltage Charged Threshold minus, TA = +25°C 0.095 0.125 0.155 V Fault Discharge Current SS = 2V 0.25 1.0 - mA Reset Threshold Voltage TA = +25°C 0.22 0.27 0.31 V SLOPE COMPENSATION Charge Current SLOPE = 2V, 0°C to +105°C -40°C to +105°C -45 -41 -53 -53 -65 -65 µA Slope Compensation Gain Fraction of slope voltage added to ISENSE, TA = +25°C 0.097 - 0.103 V/V Fraction of slope voltage added to ISENSE 0.082 - 0.118 V/V Discharge Voltage VRTCT = 4.5V - 0.1 0.2 V GATE OUTPUT Gate Output Limit Voltage VC = 20V, CGATE = 1nF, IOUT = 0mA 11.0 13.5 16.0 V Gate VOH VC - GATE, VC = 10V, IOUT = 150mA -1.5 2.2 V Gate VOL GATE - PGND, IOUT = 150mA IOUT = 10mA -1.2 0.6 1.5 0.8 V Peak Output Current VC = 20V, CGATE = 1nF (Note 10) - 1.0 - A Output “Faulted” Leakage VC = 20V, UV = 0V, GATE = 2V 1.2 2.6 - mA Rise Time VC = 20V, CGATE = 1nF 1V < GATE < 9V -60 100 ns Fall Time VC = 20V, CGATE = 1nF 1V < GATE < 9V -15 40 ns Minimum ON time ISET = 0.5V; VFB = 0V; VC = 11V ISENSE to GATE w/10:1 Divider RTCT = 4.75V through 1k (Note 10) -- 110 ns OVERCURRENT PROTECTION Minimum ISET Voltage -- 0.35 V Maximum ISET Voltage 1.2 -- V ISET Bias Current VISET = 1.00V -1.0 - 1.0 µA Restart Delay TA = +25°C 150 295 445 ms OV AND UV VOLTAGE MONITOR Overvoltage Threshold 2.4 2.5 2.6 V Undervoltage Fault Threshold 1.89 1.93 2.00 V Electrical Specifications Recommended operating conditions unless otherwise noted. Refer to Block Diagram and Typical Application schematic on page 3 and page 4. 9V < VCC = VC < 20V, RT = 11k, CT = 330 pF. Typical values are at TA = +25°C. Boldface limits apply over the operating temperature range, -40°C to +105°C. (Continued) PARAMETER TEST CONDITIONS MIN (Note 9) TYP MAX (Note 9) UNITS |
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