データシートサーチシステム |
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LM3812 データシート(PDF) 4 Page - National Semiconductor (TI) |
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LM3812 データシート(HTML) 4 Page - National Semiconductor (TI) |
4 / 14 page Common Device Parameters (Continued) Unless otherwise specified, V DD = 5.0V for the following specifications. Supply bypass capacitor is 1 µF and filter capacitor is 0.1 µF. Symbol Parameter Conditions Typ (Note 5) Limit (Note 6) Units V OH Logic High Level for PWM Load current = 1 mA, 2V ≤ V DD ≤ 5.25V V DD − 0.05 V DD − 0.2 V V (min) V OL Logic Low Level for PWM Sink current = 1 mA, 2V ≤ V DD ≤ 5.25V 0.04 V 0.2 V (max) P I Insertion Loss I SENSE = 1A (Note 9) 0.004 Ω Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is in- tended to be functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see Electrical Characteristics. The guar- anteed specifications apply only for the test conditions listed. Some performance characteristics may degrade when the device is not operated under the listed test conditions. Note 2: At elevated temperatures, devices must be derated based on package thermal resistance. The device in the surface-mount package must be derated at θJA= 150˚C/W (typically), junction-to-ambient. Note 3: The human body model is a 100 pF capacitor discharged through a 1.5 k Ω resistor into each pin. Note 4: The absolute maximum peak and continuous currents specified are not tested. These specifications are dependent on the θJA, which is 150˚C/W for the S08 package. Note 5: Typical numbers are at 25˚C and represent the most likely parametric norm. Specifications in standard type face are for TJ= 25˚C and those with boldface type apply over full operating temperature ranges. Note 6: Limits are 100% production tested at 25˚C. Limits over the operating temperature range are guaranteed through correlation using Statistical Quality Control (SQC) methods. The limits are used to calculate National’s Averaging Outgoing Quality Level (AOQL). Note 7: There is a variation in accuracy over time due to thermal effects. Please refer to the “PWM Output and Current Accuracy” section for more information. Note 8: The PWM accuracy for LM3812-7.0 and LM3813-7.0 depends on the amount of copper area under pins 1 and 2, and the layout. Please refer to the “PWM Output and Current Accuracy” section for more information. Note 9: The tolerance of the internal lead frame resistor is corrected internally. The temperature coefficient of this resistor is 2600 ppm/˚C. www.national.com 4 |
同様の部品番号 - LM3812 |
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同様の説明 - LM3812 |
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