SPX3940AM3-L-2-5/TR 查看數據表（PDF） - Exar Corporation

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SPX3940AM3-L-2-5/TR

1A Low Dropout Voltage Regulator

Exar Corporation 

SPX3 9 4 0

1 A Low Dr opou t Volt age Regu lat or

Note 2: Dropout voltage is defined as the input to output differential when the output voltage drops to 99% of its normal

value.

Note 3: Ground pin current is the regulator quiescent current. The total current draw

n from the source is the sum of the

load current to the ground current.

Note 4: VIN =V OUT(NOMINAL) +1V. For example, use V IN =4.3V for a 3.3V regulator. Employ pulse

- testing procedures to minimize

temperature rise.

BLOCK DIAGRAM

PIN ASSIGNMENT

Fig. 2: SPX3940 Block Diagram

Fig. 3: SPX3940 Pin Assign ment

© 2012 Exar Corporation

3/ 11

Rev. 1.0.0

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