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Operating from a minimum input voltage of 1.65V, the LP3991
regulator has been designed to provide fixed stable output
voltages for load currents up to 300mA. This device is suitable
where accurate, low voltages are required from low input voltage
sources and is therefore suitable for post regulation of
switched mode regulators. In such applications, significant
improvements in performance and EMI can be realized, with
little reduction in overall efficiency. The LP3991 will provide
fixed outputs as low as 1.2V from a wide input range of 1.65V
to 4.0V Using the enable pin, the device may be controlled to
provide a shutdown state, in which negligible supply current
is drawn.
regulator has been designed to provide fixed stable output
voltages for load currents up to 300mA. This device is suitable
where accurate, low voltages are required from low input voltage
sources and is therefore suitable for post regulation of
switched mode regulators. In such applications, significant
improvements in performance and EMI can be realized, with
little reduction in overall efficiency. The LP3991 will provide
fixed outputs as low as 1.2V from a wide input range of 1.65V
to 4.0V Using the enable pin, the device may be controlled to
provide a shutdown state, in which negligible supply current
is drawn.
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