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MIC2103 Datasheet(PDF) 5 Page - Micrel Semiconductor |
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MIC2103 Datasheet(HTML) 5 Page - Micrel Semiconductor |
5 / 36 page Micrel, Inc. MIC2103/04 August 2012 5 M9999-080712-A Electrical Characteristics (4) (Continued) VIN = 48V, VOUT = 5V, VBST – VSW = 5V; TA = 25°C, unless noted. Bold values indicate 40°C ≤ TJ ≤ +125°C. Oscillator VFREQ = VIN 400 600 750 Switching Frequency VFREQ = 50%VIN 300 kHz Maximum Duty Cycle 85 % Minimum Duty Cycle VFB > 0.8V 0 % Minimum Off-Time 140 200 260 ns Soft Start Soft-Start time 5 ms Short Circuit Protection Current-Limit Threshold VFB = 0.79V -30 -14 0 mV Short-Circuit Threshold VFB = 0V -23 -7 9 mV Current-Limit Source Current VFB = 0.79V 60 80 100 µA Short-Circuit Source Current VFB = 0V 27 36 47 µA FET Drivers DH, DL Output Low Voltage ISINK = 10mA 0.1 V DH, DL Output High Voltage ISOURCE = 10mA VPVDD - 0.1V Or VBST - 0.1V V DH On-Resistance, High State 2.1 3.3 Ω DH On-Resistance, Low State 1.8 3.3 Ω DL On-Resistance, High State 1.8 3.3 Ω DL On-Resistance, Low State 1.2 2.3 Ω SW, BST Leakage Current 50 µA Power Good Power Good Threshold Voltage Sweep VFB from Low to High 85 90 95 %VOUT Power Good Hysteresis Sweep VFB from High to Low 6 %VOUT Power Good Delay Time Sweep VFB from Low to High 100 µs Power Good Low Voltage VFB < 90% x VNOM, IPG = 1mA 70 200 mV Thermal Protection Over-Temperature Shutdown TJ Rising 160 °C Over-Temperature Shutdown Hysteresis 4 °C Notes: 1. Exceeding the absolute maximum rating may damage the device. 2. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5kΩ in series with 100pF. 3. The device is not guaranteed to function outside operating range. 4. Specification for packaged product only. 5. The application is fully functional at low VDD (supply of the control section) if the external MOSFETs have low voltage VTH. |
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