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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LM2832 датащи(PDF) 1 Page - National Semiconductor (TI) |
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LM2832 датащи(HTML) 1 Page - National Semiconductor (TI) |
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1 / 27 page  LM2832 High Frequency 2.0A Load - Step-Down DC-DC Regulator General Description The LM2832 regulator is a monolithic, high frequency, PWM step-down DC/DC converter in a 6 Pin LLP and a 8 Pin eMSOP package. It provides all the active functions to pro- vide local DC/DC conversion with fast transient response and accurate regulation in the smallest possible PCB area. With a minimum of external components, the LM2832 is easy to use. The ability to drive 2.0A loads with an internal 150 m Ω PMOS switch using state-of-the-art 0.5 µm BiCMOS technology results in the best power density available. The world-class control circuitry allows on-times as low as 30ns, thus supporting exceptionally high frequency conversion over the entire 3V to 5.5V input operating range down to the minimum output voltage of 0.6V. Switching frequency is internally set to 550 kHz, 1.6 MHz, or 3.0 MHz, allowing the use of extremely small surface mount inductors and chip capacitors. Even though the operating frequency is high, efficiencies up to 93% are easy to achieve. External shut- down is included, featuring an ultra-low stand-by current of 30 nA. The LM2832 utilizes current-mode control and inter- nal compensation to provide high-performance regulation over a wide range of operating conditions. Additional fea- tures include internal soft-start circuitry to reduce inrush current, pulse-by-pulse current limit, thermal shutdown, and output over-voltage protection. Features n Input voltage range of 3.0V to 5.5V n Output voltage range of 0.6V to 4.5V n 2.0A output current n High Switching Frequencies 1.6MHz (LM2832X) 0.55MHz (LM2832Y) 3.0MHz (LM2832Z) n 150m Ω PMOS switch n 0.6V, 2% Internal Voltage Reference n Internal soft-start n Current mode, PWM operation n Thermal Shutdown n Over voltage protection Applications n Local 5V to Vcore Step-Down Converters n Core Power in HDDs n Set-Top Boxes n USB Powered Devices n DSL Modems Typical Application Circuit 20197564 20197581 August 2006 © 2006 National Semiconductor Corporation DS201975 www.national.com |
Аналогичный номер детали - LM2832 |
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Аналогичное описание - LM2832 |
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ссылки URL |
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