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UCC36451G-SH2-R 数据表(PDF) 3 Page - Unisonic Technologies |
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UCC36451G-SH2-R 数据表(HTML) 3 Page - Unisonic Technologies |
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3 / 8 page ![]() UCC36451 CMOS IC UNISONICTECHNOLOGIESCO.,LTD 3 of 8 www.unisonic.com.tw QW-R115-014.A ABSOLUTE MAXIMUM RATING (TA=25°C, unless otherwise specified) PARAMETER SYMBOL RATINGS UNIT Supply Voltage VIN -0.3 ~ +42 V Switch Node Voltage VSW -0.3 ~ VIN+0.3 V Boost Voltage VBS VSW - 0.3 ~ VSW + 6 V All Other Pins -0.3 ~ +6 V Output Voltage VOUT VFB ~ 20 V Lead Temperature 260 °C Junction Temperature TJ +150 °C Storage Temperature TSTG -65 ~ +150 °C Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. RECOMMENDED OPERATING RATINGS PARAMETER SYMBOL RATINGS UNIT Ambient Operating Temperature TA -40 ~ +85 °C THERMAL CHARACTERISTICS PARAMETER SYMBOL RATINGS UNIT Junction to Ambient θJA 50 °C/W Junction to Case θJC 25 °C/W Note: θJA is measured with the PCB copper area of approximately 1 in 2 (Multi-layer). That need connect to exposed pad. ELECTRICAL CHARACTERISTICS (VIN=12V, TA=+25°C, unless otherwise noted.) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Input Voltage Range 8 36 V Quiescent Current ICCQ VFB=1.05V 1.2 2 mA Feedback Voltage VFB 8V≤VIN≤36V 0.98 1.00 1.02 V Feedback Overvoltage Threshold OVP (FB) 1.1X VFB Cable Compensation Current ICFB VCS=100mV 4 uA High-Side Switch On Resistance RDS (ON) 1 75 mΩ High-Side Switch Leakage Current VFB=1.05V, VSW=0V 10 μA High-Side Switch Current Limit Minimum Duty Cycle 4.7 5.7 A LG Rise Time TLGR CLX=1200pF 40 ns LG Fall Time TLGF CLX=1200pF 40 ns LG Driver Bias Supply Voltage 5 V Oscillation Frequency FOSC1 160 KHz Short Circuit Oscillation Frequency FOSC2 VFB<0.4V 80 KHz Short Circuit Retry time RTSCP VFB<0.5V 1 mS Maximum Duty Cycle DMAX 88 % Minimum On Time TON (min) 220 ns Current Sense Voltage VCS1/2 95 100 115 mV Input Under Voltage Lockout Threshold UVLO VIN Rising 6.5 7.0 7.5 V Input Under Voltage Lockout Threshold Hysteresis UVLO-Hys 800 mV Input Over Voltage Lockout Threshold OVLO VIN Rising 36 V Input Over Voltage Lockout Threshold Hysteresis OVLO-Hys 3 V Soft-Start Period 2 mS Thermal Shutdown TSD 155 °C Thermal Shutdown Hysterisis TSH 30 °C |
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