ILE4270G
1
IC
OF
5
V/550
M
A
POWER VOLTAGE REGULATOR WITH LOW RESIDUAL
VOLTAGE
(
ANALOG OF
TLE4270G
BY
S
IEMENS
)
ILE4270G (analog TLE4270G by Siemens) - an integrated circuit of 5V/550 mA power
voltage regulator with low residual voltage, implemented
in 5-pin plastic package of P-263-5-1 type in
accordance with Siemens specification.
IC of 5V/550 mA power voltage regulator is purposed for
producing 5V constant voltage with 2% accuracy with
residual voltage less than 0.7V at load current 550 mA
and input voltage up to 26V.
It is suitable for use in power supply in electronic
equipment including automotive electronics. Maximum
input voltage is 42V. IC has a protection against
overvoltage of positive and negative polarity, internal
limitation of max load current with temperature reset of
output voltage. It has a reset function.
Features:
High precision of output voltage 5V 2%
Low residual voltage
Imbedded overtemperature protection
Reverse polarity protection
Very low consumption current
Input voltage up to 42V
Overvoltage protection up to 65V (400mc)
Short-circuit proof
Suitable for use in automotive electronics
Junction temperature range from minus 40 to +125
Adjustable reset time
ILE4270G
3
Pin definitions
Pin Symbol Description
Function
1 I Input
Input
2
RO
Reset Output
Reset oscillator output
3 GND Ground
Common
4
D
Reset delay
Output of reset signal delay
5 Q
5-V
Output
Output
TYPICAL ELECTRICAL CHARACTERISTICS
(U
I
=13.5V, -40
o
C
T
J
125
o
C, unless otherwise
specified)
Parameter, unit
Symbol
Test conditions
Typical value
Switching delay time, mc
t
d
C
d
= 100 nF
13
Low reset voltage, mV
U
ROL
R
intern
= 30 kOhm
1.0 V
U
Q
4.5 V
60
Pulsation smoothing rate, dB
PSRR
f
r
= 100 Hz,
U
r
= 0.5 U
SS
54
Notes: Testing of electrical characteristics is carried out in compliance with connection circuit given in
Annex
ABSOLUTE MAXIMUM RATINGS
Limit ratings
Maximum ratings
Parameter Unit
min max min
max
Die temperature,
J
C
-40 125 - 150
Storage temperature,
stg
C
- -
-50
150
Input voltage, U
I
U
Q
+ 0.7
46
-42
46
Input voltage, U
I
- - -
65**
Input current, I
I
-
Internally
limited
- Internally
limited
Output voltage, U
Q
,
4.9 5.1 -1.0
16
Output current, I
Q
-
Internally
limited
- Internally
limited
Current on output "Ground", I
M
- - -0.5
-
Voltage on output Reset Output, U
R
0 - -0.3
7
Current on output Reset Output, I
R
A
-
Internally
limited
- Internally
limited
Reset Delay, U
D
- - -0.3
7
Voltage of reset delay output Reset Delay,
U
D
- - -0.3
7
Current of reset delay output Reset Delay, I
D
A
- Internally
limited
- Internally
limited
Thermal resistance junction-ambient, R
th ja
/
- 70* -
70*
Thermal resistance junction-case, R
thjc
(P-
TO-263-5-1 / P-TO-220-5-12)
/
- 3* -
3*
ILE4270G
4
Note - Absolute maximum power P
tot
,W, dissipated by IC at the ambient temperature T
A
, is to be
determined as
P
tot
= (125 - T
A
) / R
th ja
, (1)
where 125 - junction absolute maximum operating temperature,
* R
th ja
- thermal resistance "junction - ambient" (for IC without additional external heat sink),
/W. Rating of this parameter in analog IC makes R
th ja
= 70
/W (according to the data by
"Siemens"). For IC with additional external heat sink
R
th ja
= R
th jc
+ R
th ca
, (2)
where R
th jc
- IC thermal resistance "junction-case",
/W. Rating of this parameter in analog IC
makes R
th jc
= 3
/W (according to the data by "Siemens"). Thermal R
th jc
and R
th ja
of the IC is
determined in the course of experimental development.
Thermal resistance "case-ambient" R
th ca
of the designed IC is determined by the design of heat
sink and specified by IC consumer.
Used heat sink, switching mode (consumed power) and ambient temperature have to ensure
junction temperature nor more than T
J
+125 .
** Effect time t
400 mc
ELECTRICAL PARAMETERS
Table 1 - Electrical parameters (U
I
=13.5V, -40
o
C
T
J
125
o
C , unless otherwise specified)
Target
Parameter,
unit
Symbol Test
conditions
min max
5 mA
I
Q
550 mA
6 V
U
I
26 V
4.9 5.1
Output voltage, V
U
Q
I
Q
300 mA
26 V
U
I
36 V
4.9 5.1
Maximum output current, mA
I
Q max
U
Q
= 0 V
650
-
Consumption current, mA
I
q
= I
I
- I
Q
I
q
I
Q
= 5 mA
-
1.5
I
Q
= 550 mA
-
75
I
Q
= 550 mA;
U
I
= 5 V
- 90
Residual voltage, mV
U
dr
I
Q
= 550 mA
-
700
Output voltage versus load current,
mV
U
Q(I)
5mA
I
Q
550mA
U
I
= 6 V
- 50
Output voltage versus input
voltage, mV
U
Q(U)
6V
U
I
26V
I
Q
=5mA
- 25
Reset oscillator parameters
Switching threshold voltage, V
U
RT
4.5
4.8
High reset voltage, V
U
ROH
4.5
-
Low reset voltage, mV
U
ROL
I
R
= 3 mA
U
Q
= 4.4
- 400
Circuit resistance, kOhm
R
Connection directly to Q
18
46
Switching threshold of "Reset"
output into low level, V
U
DRL
U
Q
< U
RT
0.2 0.8
Switching threshold of "Reset"
output into high level, V
U
DU
1.4
2.3
Charge current, mkA
I
d
U
D
= 1.0 V
8
25
"Reset" output actuation time, mks
t
RR
C
D
= 100 nF
-
3
Overvoltage protection
Switching voltage, V
U
I, OV
-
42
46
Notes
1 Measurement of electrical parameters is carried out with connection of input capacitors C
I
= 1000 mkF,
2
= 470 nF and output capacitor C
Q
= 22 mkF.
2 Parameters specified in Table 1 are guaranteed for the constant junction temperature Tj. Measurement of
parameters should be conducted by means of pulse technique.
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