INFINEON TLE4251G

Low Drop Voltage Tracker
TLE 4251
Features
•
•
•
•
•
•
•
•
•
Output tracking tolerance ≤ ± 0.2%
400 mA output current capability
Enable Function
Very low current consumption in OFF mode
Wide operation range: up to 40 V
Wide temperature range: – 40 °C ≤ Tj ≤ 150 °C
Output protected against short circuit
Overtemperature protection
Reverse polarity proof
Type
Ordering Code
Package
TLE 4251 D
Q67006-A9439
P-TO252-5-1
TLE 4251 G
Q67006-A9529
P-TO263-5-1
P-TO252-5-1
P-TO263-5-1
Functional Description
The TLE 4251 is a monolithic integrated low-drop voltage tracker in the very small SMD
package P-TO252-5-1. It is designed to supply e.g. sensors under the severe conditions
of automotive applications. Therefore the device is equipped with additional protection
functions against over load, short circuit and reverse polarity.
Supply voltages up to 40 V are tracked to a reference voltage given to the adjust input
via an external resistor.
The output is able to drive loads up to 400 mA while it follows e.g. the 5 V output of a
main voltage regulator within an accuracy of 0.5%. For loads up to 300 mA the tracking
accuracy is 0.2%.
The TLE 4251 can be switched in stand-by mode via the enable EN input which causes
the current consumption to drop to very low values. This feature makes the IC suitable
for low power battery applications.
Data Sheet Rev. 2.4
1
2001-05-07
TLE 4251
P-TO252-5-1
P-TO263-5-1
GND
1
5
1
I
EN
ADJ
5
Q
AEP02810
I
EN GND ADJ
Q
AEP03119
Figure 1
Pin Configuration (top view)
Pin No.
Symbol
Function
1
I
Input voltage
2
EN
Enable, high-active input
3
GND
Ground
4
ADJ
Adjust; connect to the reference voltage via ext. resistor or
micro-controller port
5
Q
Output voltage; must be blocked by a capacitor
CQ ≥ 22 µF, ESR ≤ 3 Ω to GND
Data Sheet Rev. 2.4
2
2001-05-07
TLE 4251
TLE 4251
Saturation
Control and
Protection
Circuit
Temperature
Control
I
ADJ
EN
GND
Figure 2
AES02807
Block Diagram
Data Sheet Rev. 2.4
3
2001-05-07
TLE 4251
Absolute Maximum Ratings
– 40 °C < Tj < 150 °C
Parameter
Symbol
Limit Values
Unit
Remarks
min.
max.
VI
II
– 42
45
V
–
–
–
mA
internally limited
VQ
IQ
–2
45
V
–
–
–
mA
internally limited
VADJ
IADJ
– 42
45
V
–
–
–
µA
internally limited
VEN
IEN
– 42
45
V
–
–
–
µA
internally limited
Tj
Tstg
– 40
150
°C
–
– 50
150
°C
–
Rthjc
Rthja
Rthjc
Rthja
–
4
K/W
TLE 4251 D
–
78
K/W
TLE 4251 D1)
–
3
K/W
TLE 4251 G
–
52
K/W
TLE 4251 G1)
Input
Voltage
Current
Output
Voltage
Current
Adjust
Voltage
Current
Enable
Voltage
Current
Temperatures
Junction temperature
Storage temperature
Thermal Resistances
Junction case
Junction ambient
Junction case
Junction ambient
1)
Worst case, regarding peak temperature; zero airflow; mounted an a PCB 80
300 mm2 .
× 80 × 1.5 mm3, heat sink area
Note: Maximum ratings are absolute ratings; exceeding any one of these values may
cause irreversible damage to the integrated circuit.
Data Sheet Rev. 2.4
4
2001-05-07
TLE 4251
Operating Range
Parameter
Symbol
Limit Values
min.
VI
VADJ
VADJ
VEN
Tj
Input voltage
Adjust input voltage
Adjust input voltage
Enable input voltage
Junction temperature
1)
Unit
Remarks
max.
1)
40
V
–
2.5
40
V
–
0
2.5
V
VQ ≤ VADJ + ∆VQ
0
40
V
–
– 40
150
°C
–
4
VI > VADJ + VDR
Electrical Characteristics
VI = 13.5 V; 2.5 V ≤ VADJ ≤ VI – 0.5 V; – 40 °C < Tj < 150 °C; unless otherwise specified
Parameter
Symbol
Limit Values
min.
typ.
max.
Unit Test Condition
Output
Output voltage tracking
accuracy
∆VQ = VADJ – VQ
∆VQ
– 10
–
10
mV
Output voltage tracking
accuracy
∆VQ
– 10
–
10
mV
Output voltage tracking
accuracy
∆VQ
– 25
–
25
mV
Drop voltage
Vdr
–
280
520
mV
VI < 13.5 V;
– 40 °C< Tj < 125 °C;
1 mA < IQ < 300 mA
6 V < VI < 40 V
5 mA < IQ < 200 mA
6 V < VI < 28 V
1 mA < IQ < 300 mA
IQ = 300 mA;
VADJ > 4 V;
Enable ON;1)
Output current
IQ
400
450
800
mA
Tj ≤ 125 °C1)
Output capacitor
CQ
22
–
–
µF
ESR ≤ 3 Ω
at 10 kHz
Current consumption
Iq = II – IQ
Iq
–
10
20
mA
IQ = 300 mA
Current consumption
Iq = II – IQ
Iq
–
230
300
µA
IQ < 1 mA
Tj < 85 °C
VEN in ON state
Data Sheet Rev. 2.4
5
2001-05-07
TLE 4251
Electrical Characteristics (cont’d)
VI = 13.5 V; 2.5 V ≤ VADJ ≤ VI – 0.5 V; – 40 °C < Tj < 150 °C; unless otherwise specified
Parameter
Quiescent current
(stand-by)
Iq = II – IQ
Symbol
Limit Values
Unit Test Condition
min.
typ.
max.
Iq
–
0
10
µA
VEN = 0 V
Tj < 85 °C
∆VQ
– 35
±5
35
mV
5 mA < IQ < 300 mA;
Regulator Performance
Load regulation
VI = 6 V, VADJ = 5 V
Line regulation
Power-Supply-RippleRejection
∆VQ
± 10
– 25
25
mV
12 V < VI < 32 V
PSRR
60
–
–
dB
IQ = 5 mA
fr = 100 Hz;
Vr = 5 VPP
IADJ
–
0.1
0.5
µA
VADJ = 5 V
VEN ON
VEN OFF
IEN
2
–
–
V
–
–
0.5
V
5
40
70
µA
VQ ON
VQ ≤ 0.1 V
VEN = 5 V
Adjust Input
Input biasing current
Enable
Enable on voltage range
Enable off voltage range
Input current
1)
Measured when the output voltage VQ has dropped 100 mV from the nominal value.
Data Sheet Rev. 2.4
6
2001-05-07
TLE 4251
Application Information
6...40 V
µC
e.g. TLE 4470
TLE 4269
TLE 4278
I
Q
VCC
GND
100 nF
22 µF
I/O
TLE 4251
Saturation
Control and
Protection
Circuit
Temperature
Control
I
LOAD
to
sensor
Q
22 µF
100 nF
ADJ
C
100 nF
EN
GND
AES02808
Figure 3
Application Circuit
Data Sheet Rev. 2.4
7
2001-05-07
TLE 4251
Quiescent Current Iq versus
Output Current IQ
Enable Current IEN versus
Enable Voltage VEN
AED02900
30
Iq mA
IENABLE
25
25
20
20
15
15
10
10
5
5
0
AED02901
30
µA
0
100
200
300
0
mA 450
0
0.5
1
1.5
2
2.5
3
3.5 V 4
IQ
VENABLE
Tracking Accuracy ∆VQ versus
Temperature Tj, VADJ = 5 V
VQ
Current Consumption Iq versus
Input Voltage VI, VADJ = 5 V
AED02902
6
mV
AED02904
400
Iq µA
4
350
VI = 6 V
IQ = 300 mA
2
300
0
IQ = 10 mA
250
-2
VI = 40 V
IQ = 200 mA
IQ = 1 mA
200
-4
-6
-40
0
40
80
150
120 ˚C 160
5 10 15 20 25 30 35
V 45
VΙ
Tj
Data Sheet Rev. 2.4
0
8
2001-05-07
TLE 4251
Tracking Accuracy ∆VQ versus
Output Current IQ
VQ
AED02903
3
mV
2.5
VADJ = 5 V
2
VADJ = 3 V
1.5
1
0.5
0
0
100
200
300
400 mA 500
IQ
Data Sheet Rev. 2.4
9
2001-05-07
TLE 4251
Package Outlines
P-TO252-5-1
(Plastic Transistor Single Outline)
2.3 +0.05
-0.10
A
1 ±0.1
0...0.15
0.5 +0.08
-0.04
5x0.6 ±0.1
1.14
4.56
0.9 +0.08
-0.04
0.51 min
0.15 max
per side
B
5.4 ±0.1
0.8 ±0.15
(4.17)
9.9 ±0.5
6.22 -0.2
1 ±0.1
6.5 +0.15
-0.10
0.1
0.25
M
A B
GPT09161
All metal surfaces tin plated, except area of cut.
Data Sheet Rev. 2.4
10
2001-05-07
TLE 4251
P-TO263-5-1
(Plastic Transistor Single Outline)
10 ±0.2
4.4
9.8 ±0.15
1.27 ±0.1
B
0.1
0.05
2.7 ±0.3
8 1)
2.4
4.7 ±0.5
(15)
9.25 ±0.2
1±0.3
A
8.5 1)
0...0.15
5x0.8 ±0.1
0.5 ±0.1
4x1.7
8˚ max.
1)
M
A B
Typical
All metal surfaces tin plated, except area of cut.
Sorts of Packing
Package outlines for tubes, trays etc. are contained in our
Data Book “Package Information”.
SMD = Surface Mounted Device
Data Sheet Rev. 2.4
11
0.1
GPT09113
0.25
Dimensions in mm
2001-05-07
TLE 4251
Edition 2001-05-07
Published by Infineon Technologies AG,
St.-Martin-Strasse 53,
D-81541 München
© Infineon Technologies AG 2001.
All Rights Reserved.
Attention please!
The information herein is given to describe
certain components and shall not be considered as warranted characteristics.
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change reserved.
We hereby disclaim any and all warranties,
including but not limited to warranties of noninfringement, regarding circuits, descriptions
and charts stated herein.
Infineon Technologies is an approved CECC
manufacturer.
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contact your nearest Infineon Technologies
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Due to technical requirements components
may contain dangerous substances. For information 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 failure of that life-support device or system, or to
affect the safety or effectiveness of that device or system. Life support devices or systems are intended to be implanted in the human 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.
Data Sheet Rev. 2.4
12
2001-05-07