Low-Drop Voltage Regulator ILE4276

TECHNICAL DATA
Low-Drop Voltage Regulator
ILE4276
ILE4276 is integrated circuit of voltage regulator
5V/400mA, 8.5V/400mA, 10V/400mA and adjustable with low
drop voltage.
The IC is purposed to supply DC voltages 5V, 8,5V,
10V and adjustable from 2,5 to 20 V with drop voltage less
0,5V, with load current 250 mA and low consumption current.
The IC is used in power supply units of electronic devices,
including automotive electronics. The IC is tolerant to over
voltage of both polarities (positive & negative), provide internal current limitation and output voltage thermal shutdown.
The IC realized in 5-pin plastic packages P-TO263-5-1 .
ILE4276-XXD2
P-TO263-5
ILE4276-XXD0
P-TO252-5
ORDERING INFORMATION
Device
Operating
Temperature
Range
ILE4276-XXD2
ILE4276-XXD2T
ILE4276-XXD0T
Tj = -40 to 150 C
Package
Shipping
P-TO263-5
Tube
P-TO263-5
Tape & Reel
P-TO252-5
Tape & Reel
Features









5 V, 8.5 V, 10 V or variable output voltage at 400mA
Accuracy of the output voltage  4%;
Low-drop voltage ;
Low consumption current;
Built-in overheating protection;
Reverse polarity proof;
Wide junction temperature range -40 … +150C;
Suitable for use in automotive electronics;
Inhibit input.
1
January 2011, Ver.01
ILE4276
Table 1. Pins Description
Chip pad
number
01
02
03
Package pin
number
01
02
03
04
04
05
05
Symbol
Function
I
INH
GND
VA
Input
Inhibit input
Common pin (Ground)
For ILE4276-8.5, ILE4276-5.0,
ILE4276-10 pin is not used
Adjustment Output (for ILE4276-AD)
Q
Output
NC
Block Diagram
Saturation
control &
protection circuit
Temperature
sensor
VT1
01
05
I
A1
Reference
voltage
source
Q
A2
+
-
R1
*)
R2
**)
02
04
INH
VA
03
GND
A1 – control amplifier;
A2 – buffer;
R1, R2 –resistors;
VT1 - transistor
* For ICs ILE4276-10, ILE4276-5.0, ILE4276-8.5
** For ICs ILE4276-AD.
Figure 1.
January 2011, Ver.01
ILE4276
Table 2. Absolute Maximum Ratings
Symbol
Parameters
ТJ
Тstg
VI
Junction temperature
Storage temperature
Input voltage I
LE4276-5.0, ILE4276-8.5, ILE4276-10
ILE4276-AD (at UQ < 4 V)
VINH
Inhibit input voltage
IGND
Ground pin current
VQ
Output voltage
ILE4276-5.0, ILE4276-8.5,
ILE4276-10, ILE4276-AD
VVA
Adjustment input voltage
ILE4276-AD
_________
* Ambient temperature is indicated.
** Voltage is not applied to input I
Min.
Max.
-40*
-50
-42
150
150
45
-42**
-
45**
100
-1,0**
40**
-0,3**
10**
Unit
o
C
C
V
o
V
mA
V
V
* 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.
Table 3. Recommended Operation Rate
Symbol
ТJ
VI
VQ
VVA
Parameter
Junction temperature
Input voltage
ILE4276-5.0
ILE4276-8.5
ILE4276-10
ILE4276-AD (при UQ < 4 V)
Output voltage
ILE4276-5.0
ILE4276-8.5
ILE4276-10
ILE4276-AD
Adjustment input voltage
ILE4276-AD
Min.
-40*
Max.
150
5.7
9.34
10.9
4.5
40
40
40
40
4.8
8.16
9.6
2.4
2.4**
5.2
8.84
10.4
20
2.6**
Unit
o
C
V
V
V
Note:
Maximum power Ptot,W, dissipated by IC at ambient temperature T A , is calculated by formula:
Ptot = (150 - TA) / Rth j-a ,
(1)
O
150 – maximum permissible operating junction temperature, C.
o
Rth j-a - thermal resistance junction ambient (for IC without heat sink), C /W,
o
for ILE4276-AD, ILE4276-5.0, ILE4276-8.5, ILE4276-10 without heat sink Rth ja is equal 80 C /W
o
for ILE4276-AD, ILE4276-5.0, ILE4276-8.5, ILE4276-10 ILE4275 without heat sink Rth ja is equal 65 C /W
for IC with heat sink Rth ja is calculated by formula
Rth j-a = Rth j-c + Rth c-a ,
(2)
o
o
Rth j-c - thermal resistance junction case, C /W. Rth jc = 4 C/W.
Thermal resistance case-ambient Rth c-a is determined by heat sink design and is selected by IC customer.
Application circuit and heat sink and ambient temperature have to provide junction temperature not more
O
TJ  150 C.
_________
* Ambient temperature is indicated.
January 2011, Ver.01
ILE4276
Table 4. Electric Parameters
(VI = 13.5 V, -40°C < TJ < 150°C unless otherwise specified)
Symbol
VQ
Parameter
Output voltage
VQ
Output voltage accuracy
IQmax
Iq
Maximum output current
Consumption current
Iq = II - IQ
Vdr
VQ(I)
VQ(V)
Drop voltage
Vdr = VI - VQ
Mode of measurement
Norm
Min.
For ILE4276-5.0
4,8
6 V  VI  28 V
-5 mA  IQ  -400 mA
4,8
6 V  VI  40 V
-5 mA  IQ  -200 mA
For ILE4276-8.5
8,16
9.5 V  VI  28 V
-5 mA  IQ  -400 mA
8,16
9.5 V  VI  40 V
-5 mA  IQ  -200 mA
For ILE4276-10
9,6
11 V  VI  28 V
-5 mA  IQ  -400 mA
9,6
11 V  VI  40 V
-5 mA  IQ  -200 mA
For ILE4276-AD
-4
R2 < 50 k,
(VQ +1) V  VI  40 V,
VI > 4,5 V,
-5 mA  IQ  -400 mA
Note 2
400
o
VINH = 0V, TJ  100 C
IQ =-1 mA
IQ = -250 mA
IQ = -400 mA
IQ = -250 mA,
Note 2
For ILE4276-AD:
VI > 4,5 V
-5 mA  IQ  -400 mA
Load current regulation of output
voltage
Supply (input) voltage regulation
12V  VI  32 V
of output voltage
IQ = -5 mA
Inhibit input parameters
-
Unit
Max.
V
5,2
5,2
8,84
8,84
10,4
10,4
4
%
1100
0,01
0,22
10
25
0,5
mA
mA
0,7
%
V
0,5
VINH,on
Inhibit on voltage
3,5
V
UQ  4,9 V
VINH,off
Inhibit off voltage
0,5
V
UQ  0,1 V
IINH
Inhibit input current
UINH = 5 V
5
20
A
Notes
1. Measurement of electric parameters is processed with connected input capacities C I1 = 100 F, CI2 = 100
nF and output capacity CQ = 22 F.
2. Drop voltage Vdr = VI - VQ is measured, when the output voltage VQ has dropped
100mV from the nominal value obtained at VI = 13.5 V.
_______
* Ambient temperature is indicated.
January 2011, Ver.01
ILE4276
Table 5. Typical Electric Parameters
(VI = 13.5 V, -40°C < TJ < 150°C unless otherwise specified)
Symbol
Typical
value
Unit
fr = 100 Hz, IQ = -100 mA
Vr = 0,5** V (p - p)
54
dB
-
0.01
mV/ C
Parameter
Test Condition
PSRR
Ripple rejection ratio
dVQ/dT
Temperature factor of output voltage
o
_______
* Ambient temperature is indicated.
** It is permitted to measure at Vr(р - p) = 3 V, but for that PSRR norm to be revised
Typical Application Diagram
Input
+
C1
100F
Q
I
C2
100nF
02
Output
05
01
+
ILE4276-XX
04 *)
VA
INH
C3
22F
R1*)
R2 *)
50k
GND
03
R1, R2 - resistors
______
* For ILE4276-AD
Figure 2.
January 2011, Ver.01
ILE4276
Package Dimension
P-TO263-5
P-TO252-5
January 2011, Ver.01