ILE4264-2_12 Datasheet, PDF (4/7 Pages) IK Semicon Co., Ltd – 5-V/100mA Low Power Low-Drop Fixed-Voltage Regulator with low current consumption

ILE4264-2
Application Circuit
Input
C1_I
470 uF
09, 07 ^I
C2_I
100 nF
Q 01, 02
Output
C_Q
10 uF
I
INH
L
GND
E
4
08
2
6
4
-
In the ILE4264-2 the output voltage is divided and compared2to an internal reference of 2.5 V
typical. The regulation loop controls the output to achieve an ou_Gtput voltage of 5V with an accuracy
of ±3% at an input voltage range of 5.5 V < V_I < 45 V.
Figure shows a typical application circuit. For stability of the control loop the ILE4264-2 output
requires an output capacitor C_Q of at least 10 μF with a maximum permissible ESR of 4Ω.
Tantalum as well as multi layer ceramic capacitors are suitable.
At the input of the regulator an input capacitor is necessary for compensating line influences
(100nF ceramic capacitor recommended). A resistor of approx. 1Ω in series with C_I, can damp any
oscillation occurring due the input inductivity and the input capacitor.
In the application circuit shown in Figure an additional electrolytic input capacitor of 470 μF is
added in order to buffer supply line influences. This capacitor is recommended, if the device is
sourced via long supply lines of several meters.
The ILE4264-2 can supply up to 150 mA. However for protection for high input voltage above 25 V,
the output current is reduced (SOA protection).
2012, November, Rev. 04