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FA5639 Datasheet(PDF) 4 Page - Fuji Electric |
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FA5639 Datasheet(HTML) 4 Page - Fuji Electric |
4 / 21 page AN-085E Rev.1.0 Apr-2011 4 FA5639 Fuji Electric Co., Ltd. http://www.fujielectric.co.jp/products/semiconductor/ 1. Overview FA5639 is a current mode type switching power supply control IC possible to drive a power MOSFET directly. Despite of a small package with 8 pins, it has a lot of functions and it is best suited for power saving at the light load and decreasing external parts. Moreover it enables to realize a reduced space and a high cost-performance power supply. 2. Features ・Excellent Power Saving by lowering the oscillation frequency depending on the load at light load. ・Low power consumption by a built-in startup circuit. ・Overload protection function with a few number of external components. ・Current Minus detection. Power Saving of the revision of the input voltage of OLP. ・Latch pin for an external signal: Over Temperature Protection, Over Voltage Protection etc. ・Built-in drive circuit possible to connect to a power MOSFET directly. Output current: 1.0A (sink), 0.5A (source) ・VCC Under-Voltage Lock-Out function (UVLO). Function list Part Number Switching frequency OLP type IS pin VthIS FA5639 100kHz(typ.) Latch VthIS= -1.0V 3. Outline drawing SOP-8 DIP-8 5 8 4 1 0.25 ±0.1 0.5±0.1 2.54 2.54×3=7.62 7.6 0° ~ 15 ° 9.4 Unit :(mm) |
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