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744770933 Folha de dados(PDF) 3 Page - Diodes Incorporated |
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744770933 Folha de dados(HTML) 3 Page - Diodes Incorporated |
3 / 33 page ZXLD1370 ZXLD1370 Document number: DS32165 Rev. 2 - 2 3 of 33 www.diodes.com May 2010 © Diodes Incorporated A Product Line of Diodes Incorporated Absolute Maximum Ratings (Voltages to GND Unless Otherwise Stated) Symbol Parameter Rating Unit VIN Input supply voltage relative to GND -0.3 to 65 V VAUX Auxiliary supply voltage relative to GND -0.3 to 65 V VISM Current monitor input relative to GND -0.3 to 65 V VSENSE Current monitor sense voltage (VIN-VISM) -0.3 to 5 V VGATE Gate driver output voltage -0.3 to 20 V IGATE Gate driver continuous output current 18 mA VFLAG Flag output voltage -0.3 to 40 V VPWM, VADJ, VTADJ, VGI, VPWM Other input pins -0.3 to 5.5 V TJ Maximum junction temperature 150 °C TST Storage temperature -55 to 150 °C These are stress ratings only. Operation outside the absolute maximum ratings may cause device failure. Operation at the absolute maximum rating for extended periods may reduce device reliability. Recommended Operating Conditions Symbol Parameter Performance/Comment Min Max Unit VIN Input supply voltage range Normal operation 8 60 V Functional (Note 1) 6.3 VAUX Auxiliary supply voltage range (Note 2) Normal operation 8 60 V Functional 6.3 VISM Current sense monitor input range 6.3 60 V VSENSE Differential input voltage VVIN-VISM, with 0 ≤ VADJ ≤ 2.5 0 450 mV VADJ External dc control voltage applied to ADJ pin to adjust output current DC brightness control mode from 10% to 200% 0.125 2.5 V IREF Reference external load current REF sourcing current 1 mA fmax Recommended switching frequency range (Note 3) 300 1000 kHz VTADJ Temperature adjustment (TADJ) input voltage range 0 VREF V fPWM Recommended PWM dimming frequency range (Note 4) To achieve 1000:1 resolution 100 500 Hz To achieve 500:1 resolution 100 1000 Hz tPWMH/L PWM pulse width in dimming mode PWM input high or low 0.002 10 ms VPWMH PWM pin high level input voltage 2 5.5 V VPWML PWM pin low level input voltage 0 0.4 V TJ Operating Junction Temperature Range -40 125 °C GI Gain setting ratio for boost and buck-boost modes Ratio= VGI/VADJ 0.20 0.50 Notes: 1. The functional range of VIN is the voltage range over which the device will function. Output current and device parameters may deviate from their normal values for VIN and VAUX voltages between 6V and 8V, depending upon load and conditions. 2. VAUX can be driven from a voltage higher than VIN to provide higher efficiency at low VIN voltages, but to avoid false operation; a voltage should not be applied to VAUX in the absence of a voltage at VIN. 3. The device contains circuitry to control the switching frequency to approximately 400kHz. The maximum and minimum operating frequency are not tested in production. 4. This gives maximum resolution at the expense of accuracy. To ensure accuracy the following equation should be used: 2*Resolution *fPWM < fSWH |
Nº de peça semelhante - 744770933 |
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Descrição semelhante - 744770933 |
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