LP2951-N_15_15 Datasheet, PDF (27/50 Pages) Texas Instruments – LP295x-N Series of Adjustable Micropower Voltage Regulators

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LP2950-N, LP2951-N
SNVS764O – JANUARY 2000 – REVISED DECEMBER 2014
9.2.8 2-A Low Dropout Regulator
As Figure 50 shows, the 2-A Low Dropout Regulator has below features:
For 5 V_OUT, use internal resistors. Wire pin 6 to pin 7 and wire pin 2 to + V_OUT bus.
Figure 50. 2-A Low Dropout Regulator
9.2.9 5-V Regulator with 2.5-V Sleep Function
In Figure 51, the 5-V Regulator with 2.5-V Sleep Function works in below mode:
When sleep input is low, C-MOS output a high voltage and 2N3906 is off, then V_out = (1 + 300 KΩ/100 KΩ) × V_FB
≈5V
when sleep input is high, C-MOS output a low voltage, turns on 2N3906, then 200 KΩ resistor is bypassed from
circuit, and V_out = (1+100 KΩ/100 KΩ) × V_FB ≈ 2.5 V.
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