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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 Green Product (RoHS compliant) AEC Qualified
P-TO252-5-11
Functional Description The TLE 4251 is a monolithic integrated low drop voltage tracker in the very small SMD package PG-TO252-5-1. It P-TO263-5-1 is designed to supply e.g. sensors under the severe conditions of automotive applications. Therefore the device is equipped with additional protection functions against overload, 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.
Type TLE 4251 D TLE 4251 G
Data Sheet 1
Package PG-TO252-5-11 PG-TO263-5-1
Rev. 2.9, 2007-03-20
TLE 4251
PG-TO263-5-1
PG-TO252-5-11
GND
1
5
1
5
I
EN
ADJ
Q
AEP02810
I
EN GND ADJ
Q
AEP03119
Figure 1 Table 1 Pin No. 1 2 3 4 I
Pin Configuration (top view) Pin Definitions and Functions Symbol EN GND ADJ Function Input voltage Enable; high-active input Ground Adjust; connect directly to the reference or with a voltage divider to the reference (for reference-proportional output voltages, VQ5
Q
Data Sheet
2
Rev. 2.9, 2007-03-20
TLE 4251
TLE 4251 Saturation Control and Protection Circuit
Temperature Control
I
ADJ EN GND
AES02807
Figure 2
Block Diagram
Data Sheet
3
Rev. 2.9, 2007-03-20
TLE 4251
Table 2
Absolute Maximum Ratings
-40 C < Tj < 150 C Parameter 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 Symbol Limit Values Min. Max. 45 - 45 - 45 - 45 - 150 150 4 78 3 52 V mA V mA V A V A C C K/W K/W K/W K/W - internally limited - internally limited - internally limited - internally limited - - TLE 4251 D TLE 4251 D1) TLE 4251 G TLE 4251 G1) Unit Remarks
VI II VQ IQ VADJ IADJ VEN IEN Tj Tstg Rthjc Rthja Rthjc Rthja
-42 - -2 - -42 - -42 - -40 -50 - - - -
1) Worst case, regarding peak temperature; zero airflow; mounted an a PCB 80 x 80 x 1.5 mm3, heat sink area 300 mm2.
Note: Maximum ratings are absolute ratings; exceeding any one of these values may cause irreversible damage to the integrated circuit.
Data Sheet
4
Rev. 2.9, 2007-03-20
TLE 4251
Table 3 Parameter Input voltage
Operating Range Symbol Limit Values Min. Max. 40 40 2.5 40 150 V V V V C - - 41) 2.5 0 0 -40 Unit Remarks
Adjust input voltage Adjust input voltage Enable input voltage Junction temperature
1) VI > VADJ + VDR
VI VADJ VADJ VEN Tj
VQ VADJ + VQ
- -
Data Sheet
5
Rev. 2.9, 2007-03-20
TLE 4251
Table 4
Electrical Characteristics
VI = 13.5 V; 2.5 V VADJ VI - 0.5 V; -40 C < Tj < 150 C; unless otherwise specified
Parameter Output Output voltage tracking accuracy VQ = VADJ - VQ Output voltage tracking accuracy Output voltage tracking accuracy Drop voltage VQ -10 - 10 mV Symbol Limit Values Min. Typ. Max. Unit Test Condition
VQ VQ
-10 -25 -
- - 280
10 25 520
mV mV mV
Vdr
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 ON1)
Output current Output capacitor Current consumption Iq = II - IQ Current consumption Iq = II - IQ Quiescent current (stand-by) Iq = II - IQ Regulator Performance Load regulation Line regulation Power Supply Ripple Rejection
IQ CQ Iq Iq Iq
400 22 - - -
450 - 10 230 0
800 - 20 300 2
mA F mA A A
Tj 125 C1)
ESR 3 at 10 kHz
IQ = 300 mA IQ < 1 mA; Tj < 85 C; VEN in ON state VEN = 0 V; Tj < 85 C
VQ VQ
-35 -25 60
5 10 -
35 25 -
mV mV dB
5 mA < IQ < 300 mA; VI = 6 V; VADJ = 5 V 12 V < VI < 32 V; IQ = 5 mA
PSRR
fr = 100 Hz; Vr = 0.5 Vpp; VADJ = 5 V; CQ = 22 F Tantalum VADJ = 5 V
Adjust Input Input biasing current
IADJ
-
0.1
0.5
A
Data Sheet
6
Rev. 2.9, 2007-03-20
TLE 4251
Table 4
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 Enable Enable on voltage range Enable off voltage range Input current Symbol Limit Values Min. Typ. - - 40 Max. - 0.5 70 V V A Unit Test Condition
VEN ON VEN OFF IEN
2 - 5
VQ ON VQ 0.1 V VEN = 5 V
1) Measured when the output voltage VQ has dropped 100 mV from the nominal value.
Application Information
6...40 V
I
100 nF TLE 4251
e.g. TLE 4470 TLE 4269 TLE 4278 GND
C Q 22 F
VCC
I/O
Saturation Control and Protection Circuit
Temperature Control
I
Q
LOAD to sensor 22 F 100 nF
ADJ
C
100 nF GND
EN
AES02808
Figure 3
Application Circuit
Data Sheet
7
Rev. 2.9, 2007-03-20
TLE 4251
Quiescent Current Iq versus Output Current IQ
30
AED02900
Enable Current IEN versus Enable Voltage VEN
30 A 25
AED02901
Iq mA
25
IENABLE
20
20
15
15
10
10
5
5
0
0
100
200
300
mA 450
0
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
6 mV 4
AED02902
Current Consumption Iq versus Input Voltage VI, VADJ = 5 V
400
AED02904
VQ
Iq A
VI = 6 V IQ = 300 mA
350
2
300
0
IQ = 10 mA
250
-2
VI = 40 V IQ = 200 mA
-4
200
IQ = 1 mA
-6 -40
0
40
80
120 C 160
150
0
5 10 15 20 25 30 35
V 45
Tj
V
Data Sheet
8
Rev. 2.9, 2007-03-20
TLE 4251
Tracking Accuracy VQ versus Output Current IQ
3 mV 2.5
AED02903
VQ
2
VADJ = 5 V VADJ = 3 V
1.5
1
0.5
0
0
100
200
300
400 mA 500
IQ
Data Sheet
9
Rev. 2.9, 2007-03-20
TLE 4251
Package Outlines
6.5 +0.15 -0.05 5.7 MAX.
(4.24) 1 0.1
1)
A B
0.8 0.15
2.3 +0.05 -0.10 0.5 +0.08 -0.04
(5)
9.98 0.5 6.22 -0.2
0.9 +0.20 -0.01 0...0.15
0.51 MIN.
0.15 MAX. per side
5 x 0.6 0.1 1.14
0.5 +0.08 -0.04 0.1 B
4.56
0.25 M A B
1) Includes mold flashes on each side. All metal surfaces tin plated, except area of cut.
GPT09527
Figure 4
PG-TO252-5-11 (Plastic Transistor Single Outline)
Green Product (RoHS compliant) To meet the world-wide customer requirements for environmentally friendly products and to be compliant with government regulations the device is available as a green product. Green products are RoHS-Compliant (i.e Pb-free finish on leads and suitable for Pb-free soldering according to IPC/JEDEC J-STD-020).
You can find all of our packages, sorts of packing and others in our Infineon Internet Page "Products": http://www.infineon.com/products. SMD = Surface Mounted Device Data Sheet 10 Dimensions in mm Rev. 2.9, 2007-03-20
TLE 4251
4.4 10 0.2 0...0.3 8.5 1) A 1.27 0.1 B 0.05
10.3
(15)
9.25 0.2
7.55 1)
2.4 0.1
0...0.15 5 x 0.8 0.1 4 x 1.7 0.25
M
4.7 0.5
2.7 0.3
0.5 0.1
AB
8 MAX.
0.1 B
1) Typical Metal surface min. X = 7.25, Y = 6.9 All metal surfaces tin plated, except area of cut.
GPT09113
GPT09113
Figure 5
PG-TO263-5-1 (Plastic Transistor Single Outline)
Green Product (RoHS compliant) To meet the world-wide customer requirements for environmentally friendly products and to be compliant with government regulations the device is available as a green product. Green products are RoHS-Compliant (i.e Pb-free finish on leads and suitable for Pb-free soldering according to IPC/JEDEC J-STD-020).
You can find all of our packages, sorts of packing and others in our Infineon Internet Page "Products": http://www.infineon.com/products. SMD = Surface Mounted Device Data Sheet 11 Dimensions in mm Rev. 2.9, 2007-03-20
TLE 4251
Revision History Revision History
Version Rev. 2.9
Date
Changes
2007-03-20 Initial version of RoHS-compliant derivate of TLE 4251 Page 1: AEC certified statement added Page 1 and Page 10: RoHS compliance statement and Green product feature added Page 1 and Page 10: Package changed to RoHS compliant version Legal Disclaimer updated
Data Sheet
12
Rev. 2.9, 2007-03-20
Edition 2007-03-20 Published by Infineon Technologies AG 81726 Munich, Germany
(c) 2007 Infineon Technologies AG
All Rights Reserved. Legal Disclaimer The information given in this document shall in no event be regarded as a guarantee of conditions or characteristics. With respect to any examples or hints given herein, any typical values stated herein and/or any information regarding the application of the device, Infineon Technologies hereby disclaims any and all warranties and liabilities of any kind, including without limitation, warranties of non-infringement of intellectual property rights of any third party. Information For further information on technology, delivery terms and conditions and prices, please contact the nearest Infineon Technologies Office (www.infineon.com). Warnings Due to technical requirements, components may contain dangerous substances. For information on the types in question, please contact the nearest Infineon Technologies Office. Infineon Technologies components may be used in life-support devices or systems only 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.

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