LM2830XMF

TEXAS INSTRUMENTS  LM2830XMF  直流-直流开关降压逐步递减稳压器, 可调, 3V-5.5V输入, 600mV-4.5V输出, 1A输出, SOT-23-5

The is a monolithic high-frequency PWM step-down DC-to-DC Converter provides all the active functions to provide local DC-to-DC conversion with fast transient response and accurate regulation in the smallest possible PCB area. With a minimum of external components, the LM2830 regulator is easy to use. The ability to drive 1A loads with an internal 130mR PMOS switch using state-of-the-art 0.5µm 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 3 to 5.5V input operating range down to the minimum output voltage of 0.6V. Switching frequency is internally set to 1.6MHz, 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 shutdown is included, featuring an ultra-low standby current of 30nA.

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Internal soft-start function

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Current-mode and PWM operation

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Thermal shutdown

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Overvoltage protection

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130mR PMOS switch

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0.6V Internal voltage reference with 2% accuracy