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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LM25005 датащи(PDF) 1 Page - National Semiconductor (TI) |
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LM25005 датащи(HTML) 1 Page - National Semiconductor (TI) |
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1 / 21 page  LM25005 42V, 2.5A Step-Down Switching Regulator General Description The LM25005 switching regulator features all of the func- tions necessary to implement an efficient, high voltage buck regulator using a minimum of external components. This easy to use regulator includes a 42V, 160m Ω, N-channel MOSFET, with an output current capability of 2.5 Amps. The regulator control method is based upon current mode control utilizing an emulated current ramp. Current mode control provides inherent line voltage feed-forward, cycle-by-cycle current limiting and ease of loop compensation. The use of an emulated control ramp reduces noise sensitivity of the pulse-width modulation circuit, allowing reliable control of very small duty cycles necessary in high input voltage appli- cations. The operating frequency is programmable from 50kHz to 500kHz. An oscillator synchronization pin allows multiple LM25005 regulators to self-synchronize or to be synchronized to an external clock. Additional protection fea- tures include: current limit, thermal shutdown and remote shutdown capability. The device is available in a power enhanced TSSOP-20 package featuring an exposed die attach pad to aid thermal dissipation. Features n Integrated 42V, 160m Ω N-channel MOSFET n Ultra-wide input voltage range from 7V to 42V n Internal bias regulator n Adjustable output voltage from 1.225V n 1.5% feedback reference accuracy n Current mode control with emulated inductor current ramp n Single resistor oscillator frequency setting n Oscillator synchronization input n Programmable soft-start n Shutdown / Standby input n Wide bandwidth error amplifier n Thermal Shutdown Package n TSSOP-20EP (Exposed Pad) Simplified Application Schematic 20170001 February 2006 © 2006 National Semiconductor Corporation DS201700 www.national.com |
Аналогичный номер детали - LM25005 |
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Аналогичное описание - LM25005 |
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