LP2985 datasheet(23/41 Pages) TI

Numer części	LP2985

Szczegółowy opis	LP2985 150-mA, Low-Noise, Low-Dropout Regulator With Shutdown

PDF	41 Pages

Scroll/Zoom	100%

Producent	TI [Texas Instruments]

Strona internetowa	http://www.ti.com

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23 / 41 page

8.2 Typical Application

Figure 8-2 shows the standard usage of the LP2985 as a low-dropout regulator.

VOUT

2.2 µF

10 nF

1 µF

VIN

ON/OFF

GND

BYPASS

LP2985

Figure 8-2. LP2985 Typical Application

8.2.1 Design Requirements

Minimum COUT value for stability (can be increased without limit for improved stability and transient response)

ON/OFF must be actively terminated. Connect to VIN if shutdown feature is not used.

Optional BYPASS capacitor for low-noise operation.

8.2.2 Detailed Design Procedure

8.2.2.1 ON/OFF Operation

The LP2985 allows for a shutdown mode via the ON/OFF pin. Driving the pin LOW (≤ 0.4 V) turns the device

OFF; conversely, a HIGH (≥ 1.2 V) turns the device ON. If the shutdown feature is not used, connect ON/OFF to

the input to ensure that the regulator is on at all times. For proper operation, do not leave ON/OFF unconnected.

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LP2985

SLVS522Q – JULY 2004 – REVISED DECEMBER 2022

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LP2985 Arkusz danych(PDF) 23 Page - Texas Instruments