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ISL6444 Datasheet(PDF) 4 Page - Intersil Corporation |
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ISL6444 Datasheet(HTML) 4 Page - Intersil Corporation |
4 / 19 page 4 FN9069.3 April 12, 2007 Absolute Maximum Ratings Thermal Information Bias Voltage, Vcc. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+ 6.5V Input Voltage, Vin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +27.0V PHASE, BOOT, ISEN, UGATE . . . . . . . . . . . . . GND -0.3V to +33.0V BOOT with respect to PHASE . . . . . . . . . . . . . . . . . . . . . . . . . .+ 6.5V All Other Pins . . . . . . . . . . . . . . . . . . . . . . . GND -0.3V to Vcc + 0.3V ESD Classification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Class 2 Recommended Operating Conditions Bias Voltage, Vcc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +5.0V ±5% Input Voltage, Vin . . . . . . . . . . . . . . . . . . . . . . . . . . . +5.0V to +24.0V Ambient Temperature Range . . . . . . . . . . . . . . . . . . .-10°C to +85°C Junction Temperature Range. . . . . . . . . . . . . . . . . .-10°C to +125°C Thermal Resistance (Typical, Note 1) θ JA (°C/W) QSOP Package. . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 Maximum Junction Temperature (Plastic Package) . . . . . . . +125°C Maximum Storage Temperature Range . . . . . . . . . . -65°C to +150°C Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . +300°C (QSOP - Lead Tips Only) CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. NOTE: 1. θJA is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details. Electrical Specifications Recommended Operating Conditions, Unless Otherwise Noted. PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNITS VCC SUPPLY Bias Current ICC LGATEx, UGATEx Open, VSENx forced above regulation point, DDR = 0, VIN > 5V -2.2 3.2 mA Shut-Down Current ICCSN -- 30 μA VCC UVLO Rising VCC Threshold VCCU 4.3 4.65 4.75 V Falling VCC Threshold VCCD 4.1 4.35 4.45 V VIN Input Voltage Pin Current (Sink) IVIN 10 - 30 μA Input Voltage Pin Current (Source) IVINO --15 -30 μA Shut-Down Current IVINS -- 1 μA OSCILLATOR PWM1 Oscillator Frequency Fc 255 300 345 kHz Ramp Amplitude, pk-pk VR1 VIN = 16V, by characterization - 2 - V Ramp Amplitude, pk-pk VR2 VIN = 5V, by characterization - 1.25 - V Ramp Offset VROFF By characterization - 0.5 - V Ramp/VIN Gain GRB1 VIN ≥ 3V, by characterization - 125 - mV/V Ramp/VIN Gain GRB2 1 ≤ VIN ≤ 3V, by characterization - 250 - mV/V REFERENCE AND SOFT START Internal Reference Voltage VREF -0.9 - V Reference Voltage Accuracy -1.0 - +1.0 % Soft-Start Current During Start-Up ISOFT --5 - μA Soft-Start Complete Threshold VST By characterization - 1.5 - V PWM CONVERTERS Load Regulation 0.0mA < IVOUT1 < 5.0A; 5.0V < VBATT < 24.0V -2.0 - +2.0 % VSEN Pin Bias Current IVSEN By characterization 50 80 120 nA VOUT Pin Input Impedance IVOUT VOUT = 5V 40 55 65 k Ω ISL6444 |
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