Target Data Sheet Rev. 0.2
1
2000-10-06
Voltage Regulator
TLE 4284
Target Data Sheet
P-TO252-3-1
Features
Fixed output voltage regulator 2.5 V, 3.3 V or 5 V
Adjustable output down to 1.25 V
800 mA output current
80 dB ripple rejection
No output capacitor necessary
Suitable for automotive application
Short circuit protected
Overtemperature protected
New device
Functional Description
The TLE 4284 is a monolithic integrated fixed or adjustable NPN type voltage regulator
that can supply loads up to 800 mA. The device is housed in the surface mounted
P-TO252-3-1 package (D-Pak). It is designed to supply microprocessor systems under
the severe conditions of automotive applications and therefore it is equipped with
additional protection against over load, short circuit and overtemperature.
An input voltage
V
I
in the range of (
V
Q
+ 2 V) <
V
I
< 45 V is regulated to
V
Q
.
The device operates in the temperature range of
T
j
= 40 to 150
C.
The device is available for adjustable output voltage as well as in fixed voltage versions
for 3.3 V and 5.0 V (2.5 V on demand).
Type
Ordering Code
Package
TLE 4284 DV
Q67000-A9480
P-TO252-3-1
TLE 4284 DV33
Q67000-A9482
P-TO252-3-1
TLE 4284 DV50
Q67000-A9481
P-TO252-3-1
TLE 4284
Target Data Sheet Rev. 0.2
2
2000-10-06
Figure 1
Block Diagram for Adjustable Output Voltage TLE 4284 DV
Figure 2
Block Diagram for Fixed Output Voltage TLE 4284 DV33, 50
AEB02814
Current and
Saturation
Control,
Overtemperature
and Overcurrent
Protection
I
Q
ADJ
Internal
Reference
3
2
1
AEB02813
Current and
Saturation
Control,
Overtemperature
and Overcurrent
Protection
I
GND
Q
Internal
Reference
3
2
1
Target Data Sheet Rev. 0.2
3
2000-10-06
TLE 4284
Figure 3
Pin Configuration (top view)
Pin Definitions and Functions for Adjustable Output Voltage TLE 4284 DV
Pin No.
Symbol
Function
1
ADJ
Adjust; defines output voltage by external voltage divider
between Q, ADJ and GND.
2
Q
Output; the output voltage is defined by the external voltage
divider between Q, Adjust and Ground.
3
I
Input
AEP02821
ADJ
1
Q
I
Q
P-TO252-3-1
TLE 4284
Target Data Sheet Rev. 0.2
4
2000-10-06
Figure 4
Pin Configuration (top view) (cont'd)
Pin Definitions and Functions for Fixed Voltage TLE 4284 DVxx
Pin No.
Symbol
Function
1
GND
Ground
2
Q
Output; Output voltage is 3.3 V or 5 V
3
I
Input
AEP02817
GND
1
Q
I
Q
P-TO252-3-1
Target Data Sheet Rev. 0.2
5
2000-10-06
TLE 4284
Note: Stresses above those listed here may cause permanent damage to the device.
Exposure to absolute maximum rating conditions for extended periods may affect
device reliability.
Absolute Maximum Ratings
Parameter
Symbol
Limit Values
Unit Test Condition
min.
max.
Voltage Regulator
Input - Output Voltage Difference (variable device only)
Voltage
V
I
V
Q
0.3
40
V
Input Voltage (fixed voltage version only)
Voltage
V
I
0.3
40
V
Output (fixed voltage version only)
Voltage
V
Q
0.3
40
V
Current
I
Q
Internally limited
Adjust (variable version only)
Voltage
V
ADJ
0.3
40
V
Current
I
ADJ
Internally limited
Ground (fixed voltage version only)
Current
I
GND
2
mA
Temperature
Storage temperature
T
stg
50
150
C
Junction temperature
T
j
40
150
C
TLE 4284
Target Data Sheet Rev. 0.2
6
2000-10-06
Note: In the operating range, the functions given in the circuit description are fulfilled.
Operating Range
Parameter
Symbol
Limit Values
Unit Remarks
min.
max.
Input Voltage
V
I
6.3
40
V
TLE 4284 DV33
Input Voltage
V
I
8.0
40
V
TLE 4284 DV50
Input - Output
Voltage Difference
V
I
V
Q
3
40
V
TLE 4284 DV
Load Current Range
I
Q
10
Internally
limited
mA
Junction temperature
T
j
40
150
C
Thermal Resistance
Junction ambient
R
thja
144
K/W P-TO252-3-1
zero airflow,
zero heat sink area
Junction case
R
thjc
4
K/W
Target Data Sheet Rev. 0.2
7
2000-10-06
TLE 4284
Characteristics Adjustable Output Voltage Device TLE 4284 DV
40
C <
T
j
< 150
C;
V
I
V
Q
= 5 V,
I
Q
= 10 mA; unless otherwise specified
Parameter
Sym-
bol
Limit Values
Unit
Measuring Conditions
min.
typ.
max.
Reference voltage
V
REF
1)
1.20
1.25
1.30
V
Line regulation
V
Q
0.3
1.0
%
3 V
(
V
I
V
Q
)
40 V
Load regulation
V
Q
0.3
1.5
%
10 mA
I
Q
800 mA;
V
I
= 4.25 V;
V
Q
=
V
REF
Drop voltage
V
DR
2.1
V
I
Q
= 100 mA
2)
Drop voltage
V
DR
2.15
V
I
Q
= 500 mA
2)
Drop voltage
V
DR
2.2
V
I
Q
= 800 mA
2)
Current
consumption;
I
q
=
I
I
I
Q
I
q
100
120
A
I
Q
= 10 mA
Adjust current
I
ADJ
100
120
A
I
Q
= 10 mA
Adjust current
change
I
ADJ
0.2
1
A
10 mA
I
Q
800 mA;
3 V
(
V
I
V
Q
)
20 V
Adjust current
change
I
ADJ
0.2
1
A
10 mA
I
Q
200 mA;
3 V
(
V
I
V
Q
)
40 V
Temperature stability
1
%
3)
Minimum load current
I
Q
3.5
10
mA
V
I
V
Q
= 40 V
Current limit
I
Qmax
1000
2200 mA
V
I
= 13.5 V
Current limit
I
Qmax
50
200
mA
V
I
V
Q
= 40 V;
T
j
= 25
C
RMS Output Noise
3
ppm
ppm of
V
Q
; 10 Hz
f
10k;
T
j
= 25
C
1)
Power Supply Ripple
Rejection
PSRR
65
dB
V
Q
= 10 V,
f
r
= 120 Hz,
V
r
= 0.5
V
PP
,
C
ADJ
= 0
F
1)
Power Supply Ripple
Rejection
PSRR
65
80
dB
V
Q
= 10 V,
f
r
= 120 Hz,
V
r
= 0.5
V
PP
,
C
ADJ
= 10
F
1)
Long Term Stability
V
Q
0.3
1
%
T
j
= 125
C, 1000 h
1)
1)
V
REF
=
V
Q
V
ADJ
2)
Drop voltage measured when the output voltage has dropped 100 mV from the nominal value obtained at
V
Q
= V
REF
.
3)
Guaranteed by design.
TLE 4284
Target Data Sheet Rev. 0.2
8
2000-10-06
Characteristics 3.3 V Fixed Output Voltage Device TLE 4284 DV33
40
C <
T
j
< 150
C;
V
I
= 8.5 V,
I
Q
= 10 mA; unless otherwise specified.
Parameter
Symbol
Limit Values
Unit
Measuring Conditions
min.
typ.
max.
Output voltage
V
Q
3.23
3.3
3.37
V
T
j
= 25
C,
I
Q
= 10 mA
Output voltage
V
Q
3.20
3.3
3.40
V
10 mA
I
Q
800 mA;
8 V
V
I
14 V
Output voltage
V
Q
3.3
V
10 mA
I
Q
800 mA;
14 V
V
I
40 V
Line regulation
V
Q
3
10
mV
6.5 V
V
I
40 V
Load regulation
V
Q
10
50
mV
10 mA
I
Q
800 mA;
T
j
= 25
C
Drop voltage
V
DR
2.10
V
I
Q
= 100 mA
1)
1)
Drop voltage measured when the output voltage has dropped 100 mV from the nominal value obtained at
V
I
= 8.5 V.
Drop voltage
V
DR
2.15
V
I
Q
= 500 mA
1)
Drop voltage
V
DR
2.20
V
I
Q
= 800 mA
1)
Current consumption;
I
q
=
I
I
I
Q
I
q
1.1
2.0
mA
I
Q
= 10 mA
Temperature stability
3
mV
2)
2)
Guaranteed by design.
Minimum load current
I
Q
3.5
10
mA
V
= 40 V
Current limit
I
Qmax
1000
2200 mA
Current limit
I
Qmax
50
200
mA
V
I
= 40 V,
T
j
= 25
C
RMS Output Noise
3
ppm
ppm of
V
Q
,
T
j
= 25
C
2)
10 Hz
f
10 kHz
Supply Voltage Ripple
Rejection
PSRR
65
dB
f
r
= 120 Hz,
V
r
= 0.5
V
SS
C
ADJ
= 0
F
2)
Supply Voltage Ripple
Rejection
PSRR
65
80
dB
f
r
= 120 Hz,
V
r
= 0.5
V
SS
C
ADJ
= 10
F
2)
Long Term Stability
V
Q
0.3
1
%
T
j
= 125
C, 1000 h
2)
Target Data Sheet Rev. 0.2
9
2000-10-06
TLE 4284
Note: The listed characteristics are ensured over the operating range of the integrated
circuit. Typical characteristics specify mean values expected over the production
spread. If not otherwise specified, typical characteristics apply at
T
A
= 25
C and
the given supply voltage.
Characteristics 5.0 V Fixed Output Voltage Device TLE 4284 DV50
40
C <
T
j
< 150
C;
V
I
= 10 V,
I
Q
= 10 mA; unless otherwise specified
Parameter
Symbol
Limit Values
Unit
Measuring Conditions
min.
typ.
max.
Output voltage
V
Q
4.90
5.0
5.10
V
T
j
= 25
C,
I
Q
= 10 mA
Output voltage
V
Q
4.85
5.0
5.15
V
10 mA
I
Q
800 mA;
8 V
V
I
14 V
Output voltage
V
Q
5.0
V
10 mA
I
Q
800 mA;
14 V
V
I
40 V
Line regulation
V
Q
3
10
mV
8 V
V
I
40 V
Load regulation
V
Q
10
75
mV
10 mA
I
Q
800 mA;
T
j
= 25
C
Drop voltage
V
DR
2.10
V
I
Q
= 100 mA
1)
1)
Drop voltage measured when the output voltage has dropped 100 mV from the nominal value obtained at
V
I
= 10 V.
Drop voltage
V
DR
2.15
V
I
Q
= 500 mA
1)
Drop voltage
V
DR
2.20
V
I
Q
= 800 mA
1)
Thermal regulation
0.04
0.07
%/W
20 ms pulses
Current consumption;
I
q
=
I
I
I
Q
I
q
1.1
2.0
mA
I
Q
= 10 mA
Temperature stability
1
%
2)
2)
Guaranteed by design.
Minimum load current
I
Q
3.5
10
mA
V
I
= 40 V
Current limit
I
Qmax
1000
2200 mA
Current limit
I
Qmax
50
200
mA
V
I
= 40 V,
T
j
= 25
C
RMS Output Noise
3
ppm
ppm of
V
Q
,
T
j
= 25
C
2)
10 Hz
f
10 kHz
Supply Voltage Ripple
Rejection
PSRR
65
dB
f
r
= 120 Hz,
V
r
= 0.5
V
SS
C
ADJ
= 0
F
2)
Supply Voltage Ripple
Rejection
PSRR
65
80
dB
f
r
= 120 Hz,
V
r
= 0.5
V
SS
C
ADJ
= 10
F
2)
Long Term Stability
V
Q
0.3
1
%
T
j
= 125
C, 1000 h
2)
TLE 4284
Target Data Sheet Rev. 0.2
10
2000-10-06
Figure 5
Measuring Circuit Variable Output Voltage TLE 4284 DV
Figure 6
Measuring Circuit Fixed Output Voltage TLE 4284 DV33, 50
AES02936
TLE 4284 DV
1
C
I
100 nF
V
I
R
1
V
Q
C
Q
R
2
2
3
I
Q
I
ADJ
I
I
I
Q
ADJ
AES02937
TLE 4284 D
V33, V50
C
I
100 nF
V
I
V
Q
I
GND
C
Q
2
1
3
I
I
I
Q
GND
I
Q
Target Data Sheet Rev. 0.2
11
2000-10-06
TLE 4284
Application Information
Figure 7
Application Circuit Variable Output Voltage TLE 4284 DV
Figure 8
Application Circuit Fixed Output Voltage TLE 4284 DV33, 50
V
Q
V
REF
1
R
2
R
1
------
+
I
ADJ
R
2
+
=
AES02815
C
I
1
C
I
2
V
I
I
C
Q2
V
Q
Q
ADJ
R
2
C
ADJ
R
1
TLE 4284 DV
V
Q
-
V
ADJ
=
V
REF
3
2
1
I
ADJ
AES02816
C
I
1
C
I
2
V
I
C
Q2
V
Q
TLE 4284 DVxx
Output Voltage
3.3 V or 5 V
I
Q
GND
3
2
1
TLE 4284
Target Data Sheet Rev. 0.2
12
2000-10-06
In the fixed voltage TLE 4284 devices the output voltage is divided internally and
compared to an internal reference of 1.25 V typical. The regulation loop controls the
output voltage to achieve the output voltage of 5 V, 3.3 V or 2.5 V. The variable device
compares the voltage difference between the adjust pin ADJ and the output pin Q to the
internal reference of 1.25 V; the output voltage is adjusted by an external voltage divider
between Q, ADJ and GND (see equation in Figure 7).
Output
The output current limitation is reduced as a function of the input voltage for high input
voltages above 25 V.
The TLE 4284 requires no output capacitor for stability, however we recommend to use
a ceramic capacitor to filter any noise and improve the transient response.
At the input of the regulator a capacitor is necessary for compensation of line influences.
A resistor of approx. 1
in series with
C
I
can damp the LC of the input inductivity and
the input capacitor. A serial diode should be used to eliminate negative voltages from the
input.
For the variable voltage type an additional decoupling a capacitor
C
ADJ
at the adjust pin
can improve the ripple rejection ratios.
Target Data Sheet
13
2000-10-06
TLE 4284
Typical Performance Characteristics
Output Voltage
V
Q
versus
Input Voltage
V
I
0
0
AED03059
V
Q
4
8
A
12
V
2
6
10
DV50
V
I
12
2
4
6
8
10
DV33
TLE 4284
Target Data Sheet Rev. 0.2
14
2000-10-06
Package Outlines
GPT09051
5.4
0.1
-0.10
6.5
+0.15
A
0.5
9.9
6.22
-0.2
1
0.1
0.15
0.8
0.15
0.1
max
per side
0.75
2.28
4.57
+0.08
-0.04
0.9
2.3
-0.10
+0.05
B
min
0.51
0.1
1
+0.08
-0.04
0.5
0...0.15
B
A
0.25
M
0.1
All metal surfaces tin plated, except area of cut.
3x
P-TO252-3-1
(Plastic Transistor Single Outline Package)
Sorts of Packing
Package outlines for tubes, trays etc. are contained in our
Data Book "Package Information"
Dimensions in mm
SMD = Surface Mounted Device
Target Data Sheet Rev. 0.2
15
2000-10-06
TLE 4284
Edition 2000-10-06
Published by Infineon Technologies AG,
St.-Martin-Strasse 53,
D-81541 Mnchen, Germany
Infineon Technologies AG 2000.
All Rights Reserved.
Attention please!
The information herein is given to describe
certain components and shall not be consid-
ered as warranted characteristics.
Terms of delivery and rights to technical
change reserved.
We hereby disclaim any and all warranties,
including but not limited to warranties of
non-infringement, regarding circuits, descrip-
tions and charts stated herein.
Infineon Technologies is an approved CECC
manufacturer.
Information
For further information on technology, deliv-
ery terms and conditions and prices please
contact your nearest Infineon Technologies
Office in Germany or our Infineon Technolo-
gies Representatives worldwide (see ad-
dress list).
Warnings
Due to technical requirements components
may contain dangerous substances. For in-
formation on the types in question please
contact your nearest Infineon Technologies
Office.
Infineon Technologies Components may only
be used in life-support devices or systems
with the express written approval of Infineon
Technologies, if a failure of such components
can reasonably be expected to cause the fail-
ure of that life-support device or system, or to
affect the safety or effectiveness of that de-
vice or system. Life support devices or sys-
tems are intended to be implanted in the hu-
man body, or to support and/or maintain and
sustain and/or protect human life. If they fail, it
is reasonable to assume that the health of the
user or other persons may be endangered.
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