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ISL97682IRTZ-EVALZ Datasheet(PDF) 5 Page - Intersil Corporation |
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ISL97682IRTZ-EVALZ Datasheet(HTML) 5 Page - Intersil Corporation |
5 / 17 page ISL97682, ISL97683, ISL97684 5 FN7689.1 May 16, 2012 5. Absolute Maximum Ratings Thermal Information VIN, EN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 28V VDC, PWMI, FPWM/DirectPWM, FSW, RSET, COMP, OVP . . . -0.3V to 5.5V CH1 to CH4, LX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 45V PGND, AGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +0.3V Above voltage ratings are all with respect to AGND pin Operating Conditions Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40°C to +85°C Thermal Resistance (Typical) θJA (°C/W) θJC (°C/W) 16 LD TQFN (Notes 4, 5) . . . . . . . . . . . . . . . 51 4.6 Thermal Characterization (Typical) PSIJT (°C/W) 16 Ld TQFN (Note 6). . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.11 Maximum Continuous Junction Temperature . . . . . . . . . . . . . . . . .+125°C Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C Pb-Free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see link below http://www.intersil.com/pbfree/Pb-FreeReflow.asp CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and result in failures not covered by warranty. NOTES: 4. θJA is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See Tech Brief TB379. 5. For θJC, the “case temp” location is the center of the exposed metal pad on the package underside. 6. PSIJT is the PSI junction-to-top thermal characterization parameter. If the package top temperature can be measured with this rating then the die junction temperature can be estimated more accurately than the θJC and θJC thermal resistance ratings. Electrical Specifications All specifications below are characterized at TA = -40°C to +85°C; VIN = 12V, EN = 5V, RSET = 20kΩ, unless otherwise noted. Boldface limits apply over the operating temperature range, -40°C to +85°C. PARAMETER DESCRIPTION CONDITION MIN (Note 7) TYP MAX (Note 7) UNIT GENERAL VIN Backlight Supply Voltage, (Note 8) TA = +25°C 4.0 26.5 V IVIN VIN Active Current EN = 3.3V 5 mA IVIN_STBY VIN Shutdown Current EN = 0V, TA = 25°C 5 µA VOUT Output Voltage 4.0V < VIN ≤ 26.5V 45 V VUVLO Undervoltage Lockout Threshold 2.2 2.5 V VUVLO_HYS Undervoltage Lockout Hysteresis 100 mV LINEAR REGULATOR VDC LDO Output Voltage VIN > 6V 4.6 4.8 5 V VLDO VDC LDO Dropout Voltage VIN = 5V, IVDC = 20mA 30 200 mV ENLow Guaranteed Range for EN Input Low Voltage 0.5 V ENHi Guaranteed Range for EN Input High Voltage 1.5 V tEN(Low) EN low time before shut-down 29.5 ms BOOST SWITCHING REGULATOR SS Soft-start 100% LED Duty Cycle 7 ms SWILimit Boost FET Current Limit 1.4 1.8 2.3 A rDS(ON) Internal Boost Switch ON-Resistance 500 m Ω Eff_peak Peak Efficiency VIN = 24V, 48 LEDs, 30mA each, L = 10µH with DCR ≤100mΩ, TA = +25°C 90.1 % VIN = 12V, 48 LEDs, 30mA each, L = 10µH with DCR ≤ 100m Ω, TA = +25°C 87 % DMAX Boost Maximum Duty Cycle VFSW < 2.4V (FSW =600kHz) 92 % VFSW > 2.4V (FSW =1.0MHz) 85 % |
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