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Datenblatt-Suchmaschine für elektronische Bauteile |
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Datenblatt-Suchmaschine für elektronische Bauteile |
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LM25010 Datenblatt(PDF) 2 Page - Texas Instruments |
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LM25010 Datenblatt(HTML) 2 Page - Texas Instruments |
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2 / 27 page  SW BST NC NC NC NC RTN FB SS 11 10 9 5 4 3 2 1 6 7 8 12 13 14 VCC VIN RON/SD SGND ISEN SW BST RTN VCC FB SS VIN 10 9 8 7 6 5 4 3 2 1 RON/SD SGND ISEN LM25010 SNVS419C – DECEMBER 2005 – REVISED DECEMBER 2008 www.ti.com Connection Diagram Pin Functions Pin Descriptions Pin Number Name Description Application Information LLP-10 TSSOP-14 1 2 SW Switching Node Internally connected to the buck switch source. Connect to the inductor, free-wheeling diode, and bootstrap capacitor. 2 3 BST Boost pin for bootstrap capacitor Connect a capacitor from SW to the BST pin. The capacitor is charged from VCC via an internal diode during the buck switch off-time. 3 4 ISEN Current sense During the buck switch off-time, the inductor current flows through the internal sense resistor, and out of the ISEN pin to the free-wheeling diode. The current limit comparator keeps the buck switch off if the ISEN current exceeds 1.25A (typical). 4 5 SGND Current Sense Ground Re-circulating current flows into this pin to the current sense resistor. 5 6 RTN Circuit Ground Ground return for all internal circuitry other than the current sense resistor. 6 9 FB Voltage feedback input from the Input to both the regulation and over-voltage regulated output comparators. The FB pin regulation level is 2.5V. 7 10 SS Softstart An internal 11.5 µA current source charges the SS pin capacitor to 2.5V to soft-start the reference input of the regulation comparator. 8 11 RON/SD On-time control and shutdown An external resistor from VIN to the RON/SD pin sets the buck switch on-time. Grounding this pin shuts down the regulator. 2 Submit Documentation Feedback Copyright © 2005–2008, Texas Instruments Incorporated Product Folder Links: LM25010 |
Ähnliche Teilenummer - LM25010_14 |
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Ähnliche Beschreibung - LM25010_14 |
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