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1A Low Dropout Positive Voltage Regulator

■GENERAL DESCRIPTION

The XB1117 series is 1A Bi-polar transistor LDO voltage regulator. Output voltage of the XB1117P series is fixed to 1.8V, 2.5V,

3.3V, and 5.0V.

The XB1117K series output voltage is adjustable by the external resistors.

Please refer to the absolute

K12B.

With the dropout voltage 1.2V (TYP.), output current can be generated up to 1A.

The built-in overcurrent circuit and

thermal protection circuit start to operate when either one of output put current reaches the current limit level or junction

temperature reaches the temperature limit.

The XB1117 series provide stable line and load regulation by using an input

capacitor and an output capacitor (10

μF, tantalum). Package is available in SOT-223.

■APPLICATIONS

●Highly efficient linear regulators

●5V ~ 3.3V DC / DC converter

●Battery charger

●Local power supply inside equipment

●Battery powered equipment

■TYPICAL APPLICATION CIRCUIT

■ TYPICAL PERFORMANCE

CHARACTERISTICS

●Reference Voltage vs. Ambient Temperature

ETR0315_005a

■FEATURES

Maximum Output Current

: 1A

Output Voltages

: 1.8V, 2.5V, 3.3V, 5.0V, ADJ

Output Voltage Accuracy

:

±1%

Low Dropout Voltage

Line Regulation (TYP.)

: 0.04% (ADJ)

Load Regulation (TYP.)

: 0.1% (ADJ)

Adjust Pin Current

: Less than 120

μA (ADJ)

Protection Circuit

: Over-current protection

Thermal protection

Package

: SOT-223

Environmentally Friendly

: EU RoHS Compliant, Pb Free