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HM1483C データシート(PDF) 5 Page - Shenzhen Huazhimei Semiconductor Co., Ltd |
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HM1483C データシート(HTML) 5 Page - Shenzhen Huazhimei Semiconductor Co., Ltd |
5 / 9 page - 5- Pin Functions FB (Pin 1): Feedback Pin. Receive the feedback voltage from an external resistive divider across the out- put. In the adjustable version, the output voltage is fixed. The Output voltage is set by R2 and R3: VOUT = 1.21V • [1 + (R2/R3)]. RT (Pin 2): The internal oscillator is set with a single resistor between this pin and the GND pin. ILIM (Pin 3): Monitors current through the low-side switch and triggers current limit operation if the inductor valley current exceeds a user defined value that is set by RLIM and the Sense current sourced out of this pin during operation. VIN (Pin 4): Main Supply Pin. The operates from 8V to 30V unregulated input. It must be closely decoupled to GND, with a 100μF or greater ceramic capacitor to prevent large voltage spikes from appear- ing at the input. SW (Pin 5, 6): Switch Node Connection to Inductor. GND (Pin 7, 8): Ground Pin. Block Diagram HM1483C |
同様の部品番号 - HM1483C |
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同様の説明 - HM1483C |
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