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FA5640 Dataheets PDF



Part Number FA5640
Manufacturers Fuji
Logo Fuji
Description Switching Power Supply Control IC
Datasheet FA5640 DatasheetFA5640 Datasheet (PDF)

FA5640/41/42 Fuji Switching Power Supply Control IC Green mode Quasi-resonant IC FA5640/41/42 Application Note April 2011 Fuji Electric Co., Ltd. Fuji Electric Co., Ltd. AN-064E Rev.1.1 April 2011 1 http://www.fujielectric.co.jp/products/semiconductor/ FA5640/41/42 Caution 1. The contents of this note (Product Specification, Characteristics, Data, Materials, and Structure etc.) were prepared in April 2011. The contents will subject to change without notice due to product specification ch.

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FA5640/41/42 Fuji Switching Power Supply Control IC Green mode Quasi-resonant IC FA5640/41/42 Application Note April 2011 Fuji Electric Co., Ltd. Fuji Electric Co., Ltd. AN-064E Rev.1.1 April 2011 1 http://www.fujielectric.co.jp/products/semiconductor/ FA5640/41/42 Caution 1. The contents of this note (Product Specification, Characteristics, Data, Materials, and Structure etc.) were prepared in April 2011. The contents will subject to change without notice due to product specification change or some other reasons. In case of using the products stated in this document, the latest product specification shall be provided and the data shall be checked. 2. The application examples in this note show the typical examples of using Fuji products and this note shall neither assure to enforce the industrial property including some other rights nor grant the license. 3. Fuji Electric Co.,Ltd. is always enhancing the product quality and reliability. However, semiconductor products may get out of order in a certain probability. Measures for ensuring safety, such as redundant design, spreading fire protection design, malfunction protection design shall be taken, so that Fuji Electric semiconductor product may not cause physical injury, property damage by fire and social damage as a result. 4. Products described in this note are manufactured and intended to be used in the following electronic devices and electric devices in which ordinary reliability is required: - Computer - OA equipment - Communication equipment (Pin) - Measuring equipment - Machine tool - Audio Visual equipment - Home appliance - Personal equipment - Industrial robot etc. 5. Customers who are going to use our products in the following high reliable equipments shall contact us surely and obtain our consent in advance. In case when our products are used in the following equipment, suitable measures for keeping safety such as a back-up-system for malfunction of the equipment shall be taken even if Fuji Electric semiconductor products break down: - Transportation equipment (in-vehicle, in-ship etc.) - Communication equipment for trunk line - Traffic signal equipment - Gas leak detector and gas shutoff equipment - Disaster prevention/Security equipment - Various equipment for the safety. 6. Products described in this note shall not be used in the following equipments that require extremely high reliability: - Space equipment - Aircraft equipment - Atomic energy control equipment - Undersea communication equipment - Medical equipment. 7. When reprinting or copying all or a part of this note, our company’s acceptance in writing shall be obtained. 8. If obscure parts are found in the contents of this note, contact Fuji Electric Co.,Ltd. or a sales agent before using our products. Fuji Electric Co.,Ltd. and its sales agents shall not be liable for any damage that is caused by a customer who does not follow the instructions in this cautionary statement. Fuji Electric Co., Ltd. AN-064E Rev.1.1 April 2011 2 http://www.fujielectric.co.jp/products/semiconductor/ FA5640/41/42 Contents 1. Overview ・・・・・・・・・・・・・・・・・ 2. Features ・・・・・・・・・・・・・・・・・ 3. Outline drawings ・・・・・・・・・・・・・・・・・ 4. Block diagram ・・・・・・・・・・・・・・・・・ 5. Functional description of pins ・・・・・・・・・・・・・・・・・ 6. Rating and Characteristics ・・・・・・・・・・・・・・・・・ 7. Characteristic curve ・・・・・・・・・・・・・・・・・ 8. Basic operation ・・・・・・・・・・・・・・・・・ 9. Description of the function ・・・・・・・・・・・・・・・・・ 10. How to use pin and advice designing ・・・・・・・・・・・・・・・ 11. Precautions for pattern design ・・・・・・・・・・・・・・・・・ 12. Example of application circuit ・・・・・・・・・・・・・・・・・ 4 4 4 5-6 7 7-12 13-17 18 19-24 25-33 34 35 Caution) ・ The contents of this note will subject to change without notice due to improvement. ・ The application examples or the components constants in this note are shown to help your design, and variation of components and service conditions are not taken into account. In using these components, a design with due consideration for these conditions shall be conducted. Fuji Electric Co., Ltd. AN-064E Rev.1.1 April 2011 3 http://www.fujielectric.co.jp/products/semiconductor/ FA5640/41/42 1. Overview FA5640 series are a quasi-resonant type switching power supply control IC with excellent stand-by characteristics. Though it is a small package with 8 pins, it has a lot of functions and enables to decrease external parts. Therefore it is possible to realize a small size and a high cost-performance power supply. 2. Features • A quasi-resonant type switching power supply • A power supply with excellent standby characteristics • Low power consumption achieved by integrated startup circuit • Low current consumption, During operation: 0.85 mA • Control of number of bottom skips by on-off width detection • Burst operation function under light load • Built-in drive circuit directly connectable to a power MOSFET, Output current: 0.5 A (sink)/0.25 A (source) • Built-in overload protection function • Built-in latch protection fun.


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