The LP38869 low-dropout linear regulator operates with an input voltage supply from +2.7V
to +5.5V input, and delivers a specified 1A load current with a low 200 mV dropout. The high 50 dB
PSRR at 100 kHz results from a high gain control loop that also yields excellent transient
response. Coupled with a high accuracy output voltage, ±0.75 % over temperature, the LP38869 is an
ideal power supply for FPGAs, DSPs or MCUs. Output voltage is preset at +2.5V, or may be adjustable
between +0.8V to +5V with an external resistor divider.
The LP38869 only needs 1 μF output capacitance for stability. The FlexCap compensation
allows the use of any type of output capacitor, regardless of ESR. Other features include:
Soft-Start; delayed reset output; low-power shutdown; short-circuit protection; and thermal
Ground Pin Current: Typically less than 1 mA at 1A
Shutdown Mode: Typically 2 µA quiescent current when the
SHDN pin is pulled low.
Simplified Compensation: Stable with any type of output
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