XB1117
Series
1A Low Dropout Positive Voltage Regulator
ETR0315_003
■GENERAL
DESCRIPTION
The XB1117 series are 1A low dropout positive voltage regulators. 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 maximum ratings for the difference between the rated input voltage of the XB1117P50 (V
OUT
=5.0V) and XB1117P18,
25, 31, 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 (10μF, 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
■FEATURES
Adjustable or Fixed Voltages : 1.8V, 2.5V, 3.3V, 5.0V, ADJ
Low Dropout Voltage
Line Regulation (TYP.)
Load Regulation (TYP.)
Adjust Pin Current
: 1.2V @ I
OUT
=1A
: 0.04% (ADJ)
: 0.1% (ADJ)
: Less than 120μA (ADJ)
Over-current protection circuit built-in
Thermal protection circuit built-in
Bi-polar transistors LDO
Output Voltage Accuracy
Output Current
Package
:
±1%
: Up to 1A
: SOT-223
■TYPICAL
APPLICATION CIRCUIT
■
TYPICAL PERFORMANCE
CHARACTERISTICS
●Reference
Voltage vs. Ambient Temperature
1/13
TOREX [ TOREX SEMICONDUCTOR ]
