LT1521 datasheet(13/18 Pages) AD

Part #	LT1521

Description	300mA Low Dropout Regulators with Micropower Quiescent Current and Shutdown

PDF	18 Pages

Scroll/Zoom	100%

Manufacturer	AD [Analog Devices]

Direct Link	http://www.analog.com

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13 / 18 page

LT1521/LT1521-3

LT1521-3.3/LT1521-5

Rev. C

For more information www.analog.com

APPLICATIONS INFORMATION

Table 4. Fault Conditions

INPUT PIN

SHDN PIN

OUTPUT/SENSE PINS

RESULTING CONDITIONS

< VOUT (Nominal)

Open (High)

Forced to VOUT (Nominal)

Reverse Output Current ≈ 5µA (See Figure 3)

Input Current ≈ 1µA (See Figure 4)

< VOUT (Nominal)

Grounded

Forced to VOUT (Nominal)

Reverse Output Current ≈ 5µA (See Figure 3)

Input Current ≈ 1µA (See Figure 4)

Open

Open (High)

> 1V

Reverse Output Current ≈ 5µA (See Figure 3)

Open

Grounded

> 1V

Reverse Output Current ≈ 5µA (See Figure 3)

≤ 0.8V

Open (High)

≤ 0V

Output Current = 0

≤ 0.8V

Grounded

≤ 0V

Output Current = 0

> 1.5V

Open (High)

≤ 0V

Output Current = Short-Circuit Current

–20V < VIN < 20V

Grounded

≤ 0V

Output Current = 0

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