IKSEMICON ILE4264G

TECHNICAL DATA
5-V Low-Drop Fixed-Voltage Regulator
ILE4264G
ILE 4264 G is a 5-V low-drop fixed-voltage regulator
in an SOT-223 package. The IC regulates an input
voltage VI in the range 5.5 V < VI < 45 V to
VQrated = 5.0 V. The maximum output current is more
than 120 mA. This IC is shortcircuit-proof and features
temperature protection that disables the circuit at
overtemperature.
Features:
Output voltage tolerance ≤ ± 2 %
Low-drop voltage
Very low current consumption
Overtemperature protection
Short-circuit proof
Suitable for use in automotive electronics
Reverse polarity.
ILE 4264G
P-SOT223-4-1
Dimensioning Information on External Components
The input capacitor Ci is necessary for compensating line influences. Using a resistor of
approx. 1 Ω in series with Ci, the oscillating of input inductivity and input capacitance
can be clamped. The output capacitor CQ is necessary for the stability of the regulating
circuit. Stability is guaranteed at values CQ ≥ 10µF and an ESR ≤ 10Ω within the
operating temperature range.
Pin Definitions and Functions
Pin
1
Symbol
2, 4
3
GND
VI
VQ
Function
Input voltage; block to
ground directly on IC with
ceramic capacitor
Ground
5-V output voltage; block
to ground with ≥ 10-µF Ω
capacitor, ESR < 10 Ω
Circuit Description
The control amplifier compares a reference voltage, which is kept highly precise by resistance adjustment, to
a voltage that is proportional to the output voltage and drives the base of the series transistor via a buffer.
Saturation control, working as a function of load current, prevents any over-saturation of the power element.
The IC is additionally protected against overload, overtemperature and reverse polarity.
1
ILE4264G
Pin Configuration
(top view)
Absolute Maximum Ratings
Tj = – 40 to 150 °C
Parameter
Limit Values
Symbol
min.
Unit
max
Notes
Input
Input voltage
VI
–42
45
V
–
Input current
II
–
–
–
limited internally
Output voltage
VQ
–1
16
V
–
Output current
IQ
–
–
–
limited internally
IGND
50
–
mA
–
Junction temperature
Tj
–
150
°C
–
Storage temperature
Tstg
–50
150
°C
–
Input voltage
VI
5.5
45
V
–
Junction temperature
Tj
–40
150
°C
–
System-air
Rth SA
–
100
K/W
soldered in
System-case
Rth SC
–
25
K/W
–
Output
Ground
Current
Temperatures
Operating Range
Thermal Resistances
2
ILE4264G
Block Diagram
Characteristics
VI = 13.5 V; – 40 °C ≤ Tj ≤ 125 °C, unless specified otherwise
Limit Values
Parameter
Output voltage
Symbol
VQ
min
4.9
Typ
5.0
Unit
Max
5.1
V
Test Condition
5 mA ≤ IQ ≤ 100 mA
6 V≤ VI ≤ 28 V
Output-current limiting
IQ
120
150
–
mA
–
Current consumption
Iq = II – IQ
Iq
–
–
400
µA
IQ = 1 mA
Current consumption
Iq = II – IQ
Iq
–
10
15
mA
IQ = 100 mA
Drop voltage
Vdr
–
0.25
0.5
V
IQ = 100 mA1)
Load regulation
∆VQ
–
–
40
mV
IQ = 5 to 100 mA
VI = 6 V
Supply-voltage regulation
∆VQ
–
15
30
mV
VI = 6 to 28 V IQ = 5 mA
Supply voltage
suppression
SVR
–
54
–
dB
fr = 100 Hz Vr = 0.5 Vpp
3
ILE4264G
Application Circuit
4
ILE4264G
5
ILE4264G
Package Dimensions
P-SOT 223-4-1
6