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LM2639M Datasheet(PDF) 2 Page - National Semiconductor (TI) |
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LM2639M Datasheet(HTML) 2 Page - National Semiconductor (TI) |
2 / 8 page Absolute Maximum Ratings (Note 1) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. V CC5V 7V V CC12V 20V Junction Temperature 125˚C Power Dissipation (Note 2) 1.6W Storage Temperature −65˚C to +150˚C ESD Susceptibility (Note 8) 2 kV Soldering Time, Temperature 10 sec., 300˚C Operating Ratings (Note 1) V CC 4.75V to 5.25V Junction Temperature Range 0˚C to 70˚C Electrical Characteristics V CC5V = 5V, VCC12V = 12V unless otherwise specified. Typicals and limits appearing in plain type apply for TA = TJ = +25˚C. Limits appearing in boldface type apply over the entire operating temperature range. Symbol Parameter Conditions Min Typ Max Units Vcc5V V CC5V Pin Voltage 4.5 5.0 5.5 V Vcc12V V CC12V Pin Voltage 10.0 12.0 18.0 V V DACOUT 5-bit DAC Output Voltage (Note 3) N−1% NN+1% V N−1.5% NN+1.5% I CC12V Quiescent V CC12V Current Enable = 5V, VID = 00001, DRV Outputs Floating 1.3 3 mA I CC5V Operating V CC5V Current V OUT = 2.00V 4.3 8 mA V REF Rref Pin Voltage 1.225 V V INL Vid0:4, Clksel, Divsel, and Enable Pins Logic Threshold Logic Low (Note 4) 1.8 1.5 V V INH Logic High (Note 5) 3.5 2.8 V I INL Vid0:4 and Enable Pins Internal Pullup Current The Corresponding Pin = 0V 60 100 140 µA Clksel, Divsel Pins Internal Pullup Current −10 0 10 Gate Driver Resistance When Sinking Current I SINK = 50 µA, VCC12V = 14V 12 Ω V DRV DRV0:3 Output Voltage I DRV = 10 mA, VCC12V = 14V, OutV = 12V or 5V OutV − 0.3V OutV OutV + 0. 3V V t fall DRV0:3 Fall Time (Note 6) 7 ns I SRC DRV0:3 Source Current DRV0:3 = 0V, V CC12V = 14V, OutV = 5V 40 60 mA I SINK DRV0:3 Sink Current DRV0:3 = 5V, V CC12V = 14V, OutV = 5V 90 160 250 mA B gOUT Voltage Current Limit Not Activated 4 V Current Limit Activated 0 I FB FB Pin Bias Current FB = 2V 30 nA B gOUT Sink Current B gOUT = 1V 1.0 2.4 5 mA F OSC Oscillator Frequency 8.02k Ω from Rref Pin to Ground 7.0 8.0 8.7 MHz ∆ D DRV0:3 Duty Cycle Match Duty Cycle = 50% −1 +1 % ∆ ph DRV0:3 Phase Accuracy Duty Cycle = 50%,F clock = 8 MHz −1 +1 Deg T off PWM Off time Divide by 4 22 % T off Divide by 3 22 OutV Drive Voltage Range Output Freq.= 2MHz, V O = 2.00V 0 12 Vcc12 V www.national.com 2 |
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