LM2623AMM

TEXAS INSTRUMENTS  LM2623AMM  直流-直流开关升压稳压器, 可调, 800mV-14V输入, 1.24V-14V输出, 2A输出, VSSOP-8

The is a general purpose gated oscillator based DC/DC Boost Converter for battery-powered and low input voltage systems. It accepts an input voltage between 0.8 and 14V and converts it into a regulated output voltage between 1.24 and 14V. Efficiencies up to 90% and in order to adapt to a number of applications, the LM2623 allows the designer to vary the output voltage, the operating frequency 300kHz to 2MHz and duty cycle 17% to 90% to optimize the part"s performance. The selected values can be fixed or can vary with battery voltage or input to output voltage ratio. The converter uses a very simple, on/off regulation mode to produce good efficiency and stable operation over a wide operating range. It normally regulates by skipping switching cycles when it reaches the regulation limit Pulse Frequency Modulation.

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0.17R Internal MOSFET

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Good efficiency over a very wide load range

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Very low output voltage ripple

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Up to 90% regulator efficiency

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<2.5µA Ensured supply current in shutdown

This device has limited built-in ESD protection, leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.