ILE4278_13 Datasheet, PDF (3/18 Pages) IK Semicon Co., Ltd – 5-V Low-Drop Fixed Voltage Regulator

Pin Configuration
(top view)
PDSO-14
ILE4278
Figure 1
Pin Definitions and Functions
Pin
Symbol
Function
1
WO
Watchdog Output; the open collector output is connected
to the 5 V output via an integrated resistor of 30 ㏀.
2
3, 4, 5, 10, 11, 12
6
WADJ
GND
D
Watchdog Adjust; an external resistor to GND determines the
watchdog activating threshold.
Ground
Reset Delay; connect a capacitor to ground for delay time
adjustment.
Reset Switching Threshold Adjust; for setting the switching
7
RADJ
threshold, connect a voltage divider from output to ground.
If this input is connected to ground, the reset is triggered
at the internal threshold.
8
WI
Watchdog Input; rising edge-triggered input for monitoring
a microcontroller.
9
Q
5 V Output Voltage; block to ground with min.
10uF capacitor, ESR ≤ 5Ω
13
I
Input Voltage; block to ground directly on the IC with ceramic
capacitor.
14
RO
Reset Output; the open collector output is connected to the
5 V output via an integrated resistor of 30 ㏀.
June, 2013, Rev. 02