ILE4264
1
5V/100mA Low-Drop Fixed-Voltage Regulator (analog
TLE4264G, Siemens)
ILE4264G (analog TLE4264G, Siemens) - is a
single-chip 5V/100mA low-drop fixed-voltage
regulator implemented in a plastic P-SOT223-4-1
package as per Siemens specification.
The circuit of 5V/100mA low-drop fixed-voltage
regulator regulates fixed voltage of 5V with low-
drop voltage less than 0.5V at load current of
100mA. Applied in power sources of electronic
equipment including automotive electronics. The
circuit is protected against overload of either
positive or negative polarity, internal limiting of
maximum load current with temperature reset of
output voltage
Features:
5V output voltage tolerance 2%
Low-drop voltage
Very low current consumption
Built-in overtemperature protection
Protection against pins reverse polarity
Junction temperature range from - 40 up to +125.
Pin Definition
Pin
Symbol
Catalogue description
Function
1
U
I
Input voltage
Input
2, 4
GND
Ground
Ground
3
U
Q
5-V output voltage
Output
ILE4264
2
ABSOLUTE MAXIMUM RATINGS
Operating values
Absolute
maximum values
Parameter Unit
min max
min
max
Junction temperature,
J
O
C -40 125 -40
150
Storage temperature,
stg
O
C - - -50
150
Input voltage, U
I
V
5,5
45
-42
42
Input current, I
I
-
Limited
internally
- Not
limited
internally
Current on "ground" (pin 2),I
GND
mA
15
-
50
-
Output current (pin 3)
-
Limited
internally
- Not
limited
internally
Resistance junction-case, R
thJC
/Wt - 25* - 25*
Resistance junction-air, R
thJA
/Wt - 125* -
125*
Notes:
1 * - R
th ja
- thermal resistance "junction-air" (for IC without additional external heat sink),
/Wt. The same
parameter in analog IC is R
th ja
= 125
/ (by "Siemens" information data). Thermal resistance "junction-air"
of this circuit is determined in the course of research & development work.
For the circuit with additional external heat sink:
R
th ja
= R
th jc
+ R
th ca
, (1)
Where R
th jc
- IC thermal resistance "junction-case",
/Wt. . The same parameter in analog IC is R
th jc
= 25
/Wt ((by "Siemens" information data). Thermal resistance "case-air" R
th ca
in the designed IC is
determined by heat sink structure and specified by IC consumer.
Heat sink, switching "on" mode (power consumed) and ambient temperature should ensure junction
temperature not more than T
J
+125
.
2 Absolute maximum power P
tot
,Wt, dissipated by the IC at the ambient temperature T
A
, is determined as:
P
tot
= (125 - T
A
) / R
th ja
, (2)
where 125 - absolute maximum junction operation temperature,
ILE4264
3
Typical electrical parameters (V
I
=13,5 V, T
J
=25
, unless specified otherwise)
Parameter
Symbol
Test conditions
Typ. Value
Supply voltage suppression, dB
SVR
f = 100 Hz, U
R
= 0.5U
PP
,
54
Electrical parameters
(V
I
=13.5V, -40
o
C
T
J
125
o
C, unless specified otherwise)
Standard
Parameter
Symbol
Test conditions
min max
Output voltage, V
U
Q
6V
U
I
28V
5mA
I
Q
100mA
4.9 5.1
Output current, mA
I
Q
120
Consumption current, mA,
I
q
= I
I
- I
Q
I
q
I
Q
=1 mA
0,4
I
Q
=100 mA
15
Drop voltage, V
U
Dr
I
Q
=100 mA
0.5
Output voltage versus load current,
mV
U
Q(I)
5mA
I
O
100mA
V
I
= 6 V
40
Output voltage versus input
voltage, mV
U
Q(U)
6V
U
I
28V
I
Q
=5mA
30
Notes:
1 The electrical parameters are measured when input capacitor C
I
= 1000 mkF and output capacitor C
Q
= 10
mkF are connected. Application circuit is in attachment A. IC block diagram is in attachment B.
2 The parameters indicated in table 1 are guaranteed at constant junction temperature Tj. The parameters
should be measured using pulse equipment.
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