TECHNICAL DATA
5-V LOW-DROP FIXED VOLTAGE REGULATOR
ILE4271-2
Functional Description
The device is a 5-V low-drop fixed-voltage regulator. The
maximum input voltage is 42 V (65 V, ≤400 ms). Up to an input
voltage of 26 V and for an output current up to 550 mA it
regulates the output voltage within a 2% accuracy. The short
circuit protection limits the output current of more than 650 mA.
The IC can be switched off via the inhibit input. An integrated
watchdog monitors the connected controller. The device
incorporates overvoltage protection and temperature protection
that disables the circuit at unpermissibly high temperatures.
Features
• Output voltage tolerance ≤± 2%
• Low-drop voltage
• Integrated overtemperature protection
• Reverse polarity protection
• Input voltage up to 42 V
• Overvoltage protection up to 65 V (≤ 400 ms)
• Short-circuit proof
• Suitable for use in automotive electronics
• Wide temperature range
• Adjustable reset and watchdog time
Pin Definitions and Functions
Pin
1
Symbol
Function
I
Input; block to ground directly on the IC with ceramic capacitor.
Inhibit
2
INH
RO
3
Reset Output; the open collector output is connected to the
5 V output via an integrated resistor of 30 kOhm
4
5
6
7
GND
D
Ground
Reset Delay; connect a capacitor to ground for delay time adjustment.
Watchdog Input
W
Q
5-V Output; block to ground with 22 uF capacitor, ESR < 3 Ohm.
January, 2011, Rev. 01
IKSEMICON [ IK SEMICON CO., LTD ]
