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LM2698MMX-ADJ データシート(PDF) 1 Page - National Semiconductor (TI) |
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LM2698MMX-ADJ データシート(HTML) 1 Page - National Semiconductor (TI) |
1 / 17 page LM2698 SIMPLE SWITCHER® 1.35A Boost Regulator General Description The LM2698 is a general purpose PWM boost converter. The 1.9A, 18V, 0.2ohm internal switch enables the LM2698 to provide efficient power conversion to outputs ranging from 2.2V to 17V. It can operate with input voltages as low as 2.2V and as high as 12V. Current-mode architecture provides superior line and load regulation and simple frequency com- pensation over the device’s 2.2V to 12V input voltage range. The LM2698 sets the standard in power density and is capable of supplying 12V at 400mA from a 5V input. The LM2698 can also be used in flyback or SEPIC topologies. The LM2698 SIMPLE SWITCHER® features a pin selectable switching frequency of either 600kHz or 1.25MHz. This pro- motes flexibility in component selection and filtering tech- niques. A shutdown pin is available to suspend the device and decrease the quiescent current to 5µA. An external compensation pin gives the user flexibility in setting fre- quency compensation, which makes possible the use of small, low ESR ceramic capacitors at the output. Switchers Made Simple® software is available to insure a quick, easy and guaranteed design. The LM2698 is available in a low profile 8-lead MSOP package. Features n 1.9A, 0.2 Ω, internal switch (typical) n Operating voltage as low as 2.2V n 600kHz/1.25MHz adjustable frequency operation n Switchers Made Simple® software n 8-Lead MSOP package Applications n 3.3V to 5V, 5V to 12V conversion n Distributed Power n Set-Top Boxes n DSL Modems n Diagnostic Medical Instrumentation n Boost Converters n Flyback Converters n SEPIC Converters Typical Application Circuit 20012658 SIMPLE SWITCHER® is a registered trademark of National Semiconductor Corporation. October 2001 © 2001 National Semiconductor Corporation DS200126 www.national.com |
同様の部品番号 - LM2698MMX-ADJ |
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同様の説明 - LM2698MMX-ADJ |
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