IKSEMICON ILE4266-2G

TECHNICAL DATA
5V/10 V Low-Drop Voltage Regulator
ILE4266-2
Functional Description
ILE 4266-2 is a low-drop voltage regulator for 5 V or 10 V
supply in a P-SOT223-4-2 SMD package. The IC regulates an
input voltage Vi in the range of 5.5 V/10.5 V < Vi < 45 V to
VQrated = 5 V/10 V. The maximum output current is more than
120 mA. The IC can be switched off via the inhibit input, which
causes the current consumption to drop below 10 uA. The IC
is shortcircuit-proof and incorporates temperature protection
that disables the IC an overheating.
ILE 4266-2G P-SOT223-4-2
Features
TA = -40° ÷ 125°C
• Output
voltage 5 V or 10 V
• Output voltage tolerance ≤± 2 %
• 120 mA current capability
• Very low current consumption
• Low-drop voltage
• Overtemperature protection
• Reverse polarity proof
• Wide temperature range
• Suitable for use in automotive electronics
• Inhibit
Dimensioning Information on External Components
The input capacitor CI is necessary for compensating line influences. Using a resistor of
approx. 1 Ohm 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 ≥10 uF and an ESR ≤10 Ohm within the
operating temperature range.
January, 2011, Rev. 01
ILE4266-2
Pin Definitions and Functions
Pin
Symbol
1
VI
2
3
Inh
VQ
4
GND
Function
PIN CONFIGURATION
Input voltage; block to ground
directly at the IC with a ceramic
capacitor.
Inhibit; low-active input.
Output voltage; block to ground
with a capacitor. C ≥10 uF.
Ground
Circuit Description
The device produces a precise reference voltage, that is very accurate due to resistor
adjustment. A control amplifier compares the divided output voltage to this reference
voltage and drives the base of the PNP series transistor through a buffer.
Saturation control as a function of the load current prevents any oversaturation of the
power element. The IC also incorporates a number of protection circuitry for:
• Overload
• Overtemperature
• Reverse
polarity
January, 2011, Rev. 01
ILE4266-2
Maximum & Absolute Maximum Ratings
Maximum Ratings
Parameter Symbol
Absolute Maximum
Ratings
min.
max.
-40
150
-50
150
-42
45
internally
limited
50
-1
16
internally
limited
-42
45
25*
Unit
C
o
C
V
A
min.
-40
6
-
mA
V
A
4,9
-
V
C /W
-
max.
125
28
internally
limited
15
5,1
internally
limited
25*
-
100*
220*
Junction temperature, ТJ
Storage temperature, ТS
Input voltage, VI
Input current, II
o
Current on common pin ,IGND
Output voltage, UQ
Output current (pin 3)
Inhibit voltage, UINH
Thermal resistance junction case,
Rth jc
Thermal resistance junction ambient,
Rth ja,
- on PCB,
- without heat dissipater
o
°С/Вт
-
100*
220*
* Thermal resistance junction ambient for IC with heat dissipater is calculated by formula:
Rth ja = Rth jc + Rth ca ,
(1)
o
Rth jc - thermal resistance junction case, C /W.
О
Application circuit and heat dissipater have to provide TJ ≤ 125 С.
Maximum power Ptot,Вт, dissipated by IC for TA , is calculated by formula:
Ptot = (125 - TA) / Rth ja ,
(2)
О
125 – maximum permitable operating junction temperature, С.
* Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device.
These are stress ratings only and functional operation of the device at these or any other conditions beyond those
indicated under “recommended operating conditions” is not implied.
Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
Electrical Characteristics
VI = 13.5 V; – 40 oC ≤Tj ≤ 125 oC
Parameter
Symbol
Limit Values
min.
typ.
max.
Unit
Test Condition
5 mA ≤IQ ≤ 100 mA
6 V ≤Vi ≤ 28 V
–
o
VINH = 0 V; Tj ≤ 100 C
IQ = 1 mA Inhibit ON
IQ = 100 mA Inhibit ON
1)
IQ = 100 mA
IQ = 5 to 100 mA
VI = 6 V
VI = 6 V to 28 V
IQ = 5 mA
fr = 100 Hz,
Vr = 0.5 VSS
Output voltage
VQ
4.9
5
5.1
V
Output-current limitation
Current consumption
Iq = II – IQ
IQ
Iq
150
0
–
10
0.25
–
–
10
400
15
0.5
40
mA
uA
uA
mA
V
mV
Drop voltage
Load regulation
VDr
∆VQ
120
–
–
–
–
–
Supply-voltage regulation
∆VQ
–
15
30
mV
Supply-voltage rejection
SVR
–
54
–
dB
Inhibit
Inhibit on voltage
VINH, on
3.5
–
–
V
–
Inhibit off voltage
VINH, off
–
–
– 0.8
V
–
Inhibit current
IINH
5
15
25
uA
Ve = 5 V
1)
Drop voltage = VI – VQ (measured when the output voltage VQ has dropped 100 mV from the nominal
value obtained at VI = 13.5 V).
January, 2011, Rev. 01
ILE4266-2
Block Diagram
Application Circuit
January, 2011, Rev. 01
ILE4266-2
Package Dimension
P-SOT 223-4-2
January, 2011, Rev. 01