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LTM8063 Fiches technique(PDF) 13 Page - Linear Technology |
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LTM8063 Fiches technique(HTML) 13 Page - Linear Technology |
13 / 24 page LTM8063 13 8063fa For more information www.linear.com/LTM8063 For most applications, the design process is straight- forward, summarized as follows: 1. Look at Table 1 and find the row that has the desired input range and output voltage. 2. Apply the recommended,CIN,COUT,RFBandRTvalues. 3. Apply the CFF (from VOUT to FB) as required. While these component combinations have been tested for proper operation, it is incumbent upon the user to verify proper operation over the intended system’s line, load and environmental conditions. Bear in mind that the maximum output current is limited by junction tempera- APPLICATIONS INFORMATION ture, the relationship between the input and output voltage magnitude and polarity and other factors. Please refer to the graphs in the Typical Performance Characteristics section for guidance. The maximum frequency (and attendant RT value) at which the LTM8063 should be allowed to switch is given in Table 1 in the Maximum fSW column, while the recom- mended frequency (and RT value) for optimal efficiency over the given input condition is given in the fSW column. There are additional conditions that must be satisfied if the synchronization function is used. Please refer to the Synchronization section for details. Table 1. Recommended Component Values and Configuration (TA = 25°C) VIN VOUT RFB (kΩ) CIN2 COUT CFF fSW RT (kΩ) MAX fSW MIN RT (kΩ) 3.2 to 40 0.77V Open 1µF 50V 0805 X5R 100µF 4V 0805 X5R 27pF 600kHz 73.2 600kHz 73.2 3.2 to 40 1.0V 845 1µF 50V 0805 X5R 100µF 4V 0805 X5R 10pF 700kHz 60.4 725kHz 59 3.2 to 40 1.2V 453 1µF 50V 0805 X5R 100µF 4V 0805 X5R 800kHz 52.3 850kHz 48.7 3.2 to 40 1.5V 267 1µF 50V 0805 X5R 100µF 4V 0805 X5R 800kHz 52.3 1MHz 41.2 3.2 to 40 1.8V 187 1µF 50V 0805 X5R 100µF 4V 0805 X5R 900kHz 47.5 1.2MHz 33.2 3.3 to 40V1 2.0V 154 1µF 50V 0805 X5R 100µF 4V 0805 X5R 1MHz 41.2 1.3MHz 29.4 3.8 to 40V1 2.5V 113 1µF 50V 0805 X5R 47µF 4V 0805 X5R 1.2MHz 33.2 1.6MHz 23.7 5 to 40V1 3.3V 75 1µF 50V 0805 X5R 47µF 4V 0805 X5R 1.2MHz 33.2 2MHz 18.2 6.5 to 40V1 5V 45.3 1µF 50V 0805 X5R 22µF 6.3V 0805 X5R 1.4MHz 27.4 2.2MHz 15.8 10.5 to 40V1 8V 26.7 1µF 50V 0805 X5R 10µF 10V 0805 X5R 1.8MHz 20.5 2.2MHz 15.8 18.5 to 40V1 12V 17.4 1µF 50V 0805 X5R 10µF 16V 0805 X7S 1.8MHz 20.5 2.2MHz 15.8 22 to 40V1 15V 13.7 1µF 50V 0805 X5R 10µF 25V 1206 X7R 2MHz 18.2 2.2MHz 15.8 3.2 to 36V1 –3.3V 75 1µF 50V 0805 X5R 47µF 4V 0805 X5R 1.2MHz 33.2 2MHz 18.2 3.2 to 35V1 –5V 45.3 1µF 50V 0805 X5R 22µF 6.3V 0805 X5R 1.4MHz 27.4 2.2MHz 15.8 3.2 to 32V1 –8V 26.7 1µF 50V 0805 X5R 10µF 10V 0805 X5R 1.8MHz 20.5 2.2MHz 15.8 3.2 to 28V1 –12V 17.4 1µF 50V 0805 X5R 10µF 16V 0805 X7S 1.8MHz 20.5 2.2MHz 15.8 3.2 to 25V1 –15V 13.7 1µF 50V 0805 X5R 10µF 25V 1206 X7R 2MHz 18.2 2.2MHz 15.8 1. The LTM8063 may be capable of lower input voltages but may skip switching cycles. 2. An input bulk capacitor is required |
Numéro de pièce similaire - LTM8063 |
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Description similaire - LTM8063 |
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