TLE4250-2G - Infineon Technologies

TLE4250-2

Low Dropout Voltage Tracking Regulator

Data sheet, Rev. 1.0, July 2007

Automotive Power

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PG-SCT595-5

Type Package Marking

TLE4250-2G PG-SCT595-5 52

Data sheet 2 Rev. 1.0, 2007-07-24

Low Dropout Voltage Tracking Regulator TLE4250-2

1Overview

Features

• 50 mA Output Current Capability

• Tiny SMD-Package PG-SCT595-5 with lowest

thermal resistance

• Low Output Tracking Tolerance

• Stable with Small Ceramic Output Capacitor

• Low Dropout Voltage

• Combined Reference / Enable Input

• Low Current Consumption in Stand-by Mode

• Maximum Input Voltage -42 V ≤ VI ≤ +45 V

• Reverse Polarity Protection

• Output Short Circuit Proof to Ground and Supply

• Overtemperature Protection

• Temperature Range -40 °C ≤ Tj ≤ 150 °C

• Green Product (RoHS compliant)

• AEC Qualified

Functional Description

The TLE4250-2 is a monolithic integrated low dropout voltage tracker in a tiny SMD package PG-SCT595-5 with

excellent thermal resistance. It is designed to supply off-board loads (e.g. sensors) in automotive environment.

The IC protects itself in case of overload, overtemperature, reverse polarity as well as output short circuit to battery

and ground.

Supply voltages up to VI = 45 V are regulated to a reference voltage applied at the adjust input “ADJ” with high

accuracy. The output “Q” is able to drive loads up to 50 mA.

In order to reduce the quiescent current to a minimum, the TLE4250-2 can be switched to stand-by mode by

setting the adjust/enable input “ADJ/EN” to “low”.

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Data sheet 3 Rev. 1.0, 2007-07-24

TLE4250-2

Block Diagram

2 Block Diagram

Figure 1 Block Diagram and Simplified Typical Application

3 Pin Configuration

3.1 Pin Assignment

Figure 2 Pin Configuration Package PG-SCT595-5

3.2 Pin Definitions and Functions

Pin Symbol Function

1ADJ/ENAdjust / Enable.

Connect the reference to this pin. A low signal disables the IC; a high signal switches it on.

The reference voltage can be connected directly or by a voltage divider for lower output voltages.

For compensating line influences, a capacitor close to the IC pins is recommended.

2GND Ground Reference.

Internally connected to Pin 5. Connect to heatsink area.

3I Input.

IC supply. For compensating line influences, a capacitor close to the IC pins is recommended.

4Q Tracker Output.

Block to GND with a capacitor close to the IC terminals, respecting capacitance and ESR

requirements given in the table “Functional Range”.

5GND Ground Reference.

Internally connected to Pin 2. Connect to heatsink area.

GND

B l ockD iagram.v sd

Saturation Control

Current Limitation

Temp.

Protection

off-board

load

Supply

Regulated

Output Voltage

ADJ/EN

Internal

Supply

Reference

TLE 4250-2

ADJ/EN

Voltage

divider

optional

Pinout.vsd

GND

ADJ/EN

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TLE4250-2

General Product Characteristics

Data sheet 4 Rev. 1.0, 2007-07-24

4 General Product Characteristics

4.1 Absolute Maximum Ratings

Note: Stresses above the ones listed here may cause permanent damage to the device. Exposure to absolute

maximum rating conditions for extended periods may affect device reliability.

Note: Integrated protection functions are designed to prevent IC destruction under fault conditions described in the

data sheet. Fault conditions are considered as “outside” normal operating range. Protection functions are

not designed for continuous repetitive operation.

Absolute Maximum Ratings 1)

-40 °C ≤ Tj ≤ 150 °C; all voltages with respect to ground (unless otherwise specified).

1) Not subject to production test, specified by design.

Pos. Parameter Symbol Limit Values Unit Conditions

Min. Max.

Voltages

4.1.1 Input voltage VI-42 45 V –

4.1.2 Output voltage VQ-1 40 V –

4.1.3 Adjust / Enable Input VADJ/EN -0.3 40 V –

Temperatures

4.1.4 Junction Temperature Tj-40 150 °C–

4.1.5 Storage Temperature Tstg -50 150 °C–

ESD Susceptibility

4.1.6 ESD Resistivity VESD,HBM -3 3 kV HBM2)

2) ESD susceptibility, Human Body Model “HBM” according to EIA/JESD 22-A114B

4.1.7 VESD,CDM -2 2 kV CDM3)

3) ESD susceptibility, Charged Device Model “CDM” according to EIA/JESD22-C101 or ESDA STM5.3.1

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Data sheet 5 Rev. 1.0, 2007-07-24

TLE4250-2

General Product Characteristics

4.2 Functional Range

Note: Within the functional range the IC operates as described in the circuit description. The electrical

characteristics are specified within the conditions given in the related electrical characteristics table.

4.3 Thermal Resistance

Pos. Parameter Symbol Limit Values Unit Conditions

Min. Max.

4.2.1 Input Voltage VI440 V–

4.2.1 Adjust / Enable Input Voltage

(Voltage Tracking Range)

VADJ/EN 2.5 36 V –

4.2.2 Junction Temperature Tj-40 150 °C–

4.2.3 Output Capacitor Requirements CQ1– µF–

1) The minimum output capacitance requirement is applicable for a worst case capacitance tolerance of 30%

4.2.4 ESRCQ –3 Ω– 2)

2) relevant ESR value at f = 10 kHz

Pos. Parameter Symbol Limit Value Unit Conditions

Min. Typ. Max.

4.3.5 Junction to Ambient RthJA – 81 – K/W 2s2p board1)

1) Specified RthJA value is according to JESD51-2,-5,-7 at natural convection on FR4 2s2p board; The product

(chip+package) was simulated on a 76.2 x 114.3 x 1.5 mm board with 2 inner copper layers (2 x 70µm Cu, 2 x 35µm Cu).

Where applicable a thermal via array under the package contacted the first inner copper layer.

4.3.1 – 217 – K/W Footprint only2)

2) Package mounted on PCB FR4; 80 x 80 x 1.5 mm; 35 µm Cu, 5 µm Sn; horizontal position; zero airflow.

Not subject to production test; specified by design.

4.3.2 – 117 – K/W 300 mm2 PCB heatsink

area2)

4.3.3 – 103 – K/W 600 mm2 PCB heatsink

area2)

4.3.4 Junction to Soldering Point RthJSP – 30 – K/W Pins 2, 5 fixed to TA

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TLE4250-2

Electrical Characteristics

Data sheet 6 Rev. 1.0, 2007-07-24

5 Electrical Characteristics

5.1 Tracking Regulator

The output voltage VQ is controlled by comparing it to the voltage applied at pin ADJ/EN and driving a PNP pass

transistor accordingly. The control loop stability depends on the output capacitor CQ, the load current, the chip

temperature and the poles/zeros introduced by the integrated circuit. To ensure stable operation, the output

capacitor’s capacitance and its equivalent series resistor ESR requirements given in the table “Functional Range”

have to be maintained. For details see also the typical performance graph “Output Capacitor Series Resistor

ESRCQ vs. Output Current IQ”. Also, the output capacitor shall be sized to buffer load transients.

An input capacitor CI is recommended to buffer line influences. Connect the capacitors close to the IC terminals.

Protection circuitry prevent the IC as well as the application from destruction in case of catastrophic events. These

safeguards contain output current limitation, reverse polarity protection as well as thermal shutdown in case of

overtemperature.

In order to avoid excessive power dissipation that could never be handled by the pass element and the package,

the maximum output current is decreased at high input voltages.

The overtemperature protection circuit prevents the IC from immediate destruction under fault conditions (e. g.

output continuously short-circuited) by reducing the output current. A thermal balance below 200 °C junction

temperature is established. Please note that a junction temperature above 150 °C is outside the maximum ratings

and reduces the IC lifetime.

The TLE4250-2 allows a negative supply voltage. However, several small currents are flowing into the IC. For

details see electrical characteristics table and typical performance graphs. The thermal protection circuit is not

operating during reverse polarity condition.

Table 1 Electrical Characteristics Tracking Regulator

VI = 13.5 V; VADJ/EN ≥ 2.5 V; -40 °C ≤ Tj ≤ 150 °C; all voltages with respect to ground (unless otherwise specified).

Pos. Parameter Symbol Limit Values Unit Conditions

Min. Typ. Max.

5.1.1 Output Voltage Tracking

Accuracy

∆VQ-5 – 5 mV 1 mA ≤ IQ ≤ 10 mA;

6 V ≤ VI ≤ 16 V

5.1.2 -25 – 25 mV 1 mA ≤ IQ ≤ 50 mA;

6 V ≤ VI ≤ 28 V

5.1.3 -25 – 25 mV 1 mA ≤ IQ ≤ 10 mA;

6 V ≤ VI ≤ 40V

5.1.4 Load Regulation

steady-state

|dVQ,load|– – 15 mV IQ = 1 mA to 30 mA;

5.1.5 Line Regulation

steady-state

|dVQ,line|– – 10 mV VI = 6 V to 40 V;

IQ = 10 mA

5.1.6 Power Supply Ripple

Rejection

PSRR –48– dBfripple = 100 Hz;

Vripple = 1 Vpp 1)

5.1.7 Dropout Voltage

Vdr = VI - VQ

Vdr – 100 300 mV IQ = 10 mA

VADJ ≥ 4 V 2)

5.1.8 Output Current Limitation IQ,max 51 85 120 mA VQ = (VADJ - 0.1 V)

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Data sheet 7 Rev. 1.0, 2007-07-24

TLE4250-2

Electrical Characteristics

5.1.9 Reverse Current IQ-5 -1 – mA VI = 0 V;

VQ = 16 V;

VADJ = 5 V

5.1.10 Reverse Current

at Negative Input Voltage

II-10 -2 – mA VI = -16 V;

VQ = 0 V;

VADJ = 5 V

Overtemperature Protection:

5.1.11 Junction Temperature

Equilibrium

Tj,eq 151 – 200 °C Tj increasing due to power

dissipation generated

by the IC 1)

1) Parameter not subject to production test; specified by design.

2) Measured when the output voltage VQ has dropped 100 mV from its nominal value.

Table 1 Electrical Characteristics Tracking Regulator

VI = 13.5 V; VADJ/EN ≥ 2.5 V; -40 °C ≤ Tj ≤ 150 °C; all voltages with respect to ground (unless otherwise specified).

Pos. Parameter Symbol Limit Values Unit Conditions

Min. Typ. Max.

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TLE4250-2

Electrical Characteristics

Data sheet 8 Rev. 1.0, 2007-07-24

Typical Performance Characteristics Tracking Regulator

VADJ/EN = 5 V (unless otherwise noted)

Output Voltage VQ vs.

Adjust Voltage VADJ

Output Voltage VQ vs.

Input Voltage VI

Maximum Output Current IQ vs.

Input Voltage VI

Line Regulation dVQ,line vs.

Input Voltage Change dVI)

[V]

VQ-V ADJ.vsd

= 13.5 V

234

ADJ

[V]

= 150 °C

= -40 °C

[V]

VQ-VI.vsd

= 13.5 V

[V]

= 150 °C

= -40 °C

[V]

20 30

[mA]

SOA.VSD

10 40

120

= 25 °C

ADJ

= 5 V

= 125 °C

∆

VI[V]

5 1520 3035

∆

VQ [mV]

dV Q-dV I. vsd

0.2

0.1

10 25

steady-state condition

VI,initial = 6 V

VADJ = 5 V

IQ= 5 mA

0.3

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Data sheet 9 Rev. 1.0, 2007-07-24

TLE4250-2

Electrical Characteristics

Typical Performance Characteristics Tracking Regulator

VADJ/EN = 5 V (unless otherwise noted)

Load Regulation dVQ,line vs.

Output Current Change dIQ

Output Capacitor Series Resistor ESRCQ

vs. Output Current IQ

Line Transient Response Load Transient Response

∆Ι

[mA]

24 36 48

∆

Q [mV]

dV Q-dIQ .vs d

-4

-6

-8

-2

= 125 °C

= 25 °C

steady-state condition

Q, init ial = 1 mA

ADJ = 5 V

ESR- IQ.vsd

0.1

0.01

ESRCQ

[Ω]

[mA]

20 30

10 40

Stable

Region

< 28 V

-40 °C <

< 150 °C

= 1 µF

= 2.2 µF

t[µs]

40 60

∆

[mV]

dV I-reponse.v sd

20 80

[V]

IQ= 5 mA

CQ= 2.2 µF Ceramic

-40

-20

[µs]

40 60

∆

[mV]

dIQresponse.vsd

20 80

[mA]

= 13.5 V

ADJ

= 5 V

= 2.2 µF Ceramic

-50

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TLE4250-2

Electrical Characteristics

Data sheet 10 Rev. 1.0, 2007-07-24

Typical Performance Characteristics Tracking Regulator

VADJ/EN = 5 V (unless otherwise noted)

Tracking Accuracy ∆VQ vs.

Junction Temperature Tj

Dropout Voltage Vdr vs.

Output Current IQ

Dropout Voltage Vdr vs.

Junction Temperature Tj

Output Current Limitation IQ,max

vs. Output Voltage VQ

-40

[°C]

-20 20 40 80 100

∆

[mV]

dV Q-Tj .vs d

-4

0 60 140120

= 1 mA

= 50 mA

[mA]

110

V dr-IQ_l og.vsd

100

10 50

[mV]

= 25 °C

= 150 °C

-40

[°C]

-20 20 40 80 100

[mV]

V dr-Tj.vs d

200

150

100

250

0 60 140120

= 10 mA

[V]

80 100

[mA]

IQmax-VQ.vsd

= 13.5 V

ADJ

= 5 V

= 125°C T

= 25°C

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Data sheet 11 Rev. 1.0, 2007-07-24

TLE4250-2

Electrical Characteristics

Typical Performance Characteristics Tracking Regulator

VADJ/EN = 5 V (unless otherwise noted)

Reverse Output Current IQ vs.

Output Voltage VQ

Reverse Current II vs.

Input Voltage VI

Power Supply

Ripple Rejection PSRR

[V]

16 24

[mA]

IQ-V Q.vsd

-1

-1.5

-2

-0.5

832

+0.5

= 0 V

ADJ

= 5 V

= 150 °C

= -40 °C

-32

[V]

-16 -8

[mA]

II-VI.vsd

-1

-1.5

-2

-0.5

-24 0

+0.5

= 150 °C

= -40 °C

= 0 V

VADJ

= 5 V

0.01

[kHz]

PSRR

[dB]

PSRR.vsd

0.1 1 100

= 5 mA

RIPPLE

= 1 V

= 13.5 V

= 2.2 µF Ceramic

= 25 °C

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TLE4250-2

Electrical Characteristics

Data sheet 12 Rev. 1.0, 2007-07-24

5.2 Current Consumption

Typical Performance Characteristics Current Consumption

VADJ/EN = 5 V (unless otherwise noted)

Table 2 Electrical Characteristics Current Consumption

VI = 13.5 V; VADJ/EN ≥ 2.5 V; -40 °C ≤ Tj ≤ 150 °C; all voltages with respect to ground (unless otherwise specified).

Pos. Parameter Symbol Limit Values Unit Conditions

Min. Typ. Max.

5.2.1 Quiescent Current

Stand-by Mode

Iq1 –1020µAVADJ/EN ≤ 0.4 V;

Tj ≤ 85 °C

5.2.2 Current Consumption

Iq = II - IQ

Iq2 – 140 200 µA IQ ≤ 1 mA;

5.2.3 – 3 5 mA IQ ≤ 30 mA;

5.2.4 Current Consumption

Dropout Region; Iq = II - IQ

Iq3 –12mAVADJ = VI = 5 V;

IQ = 0 mA

Current Consumption Iq1, Iq2

vs. Junction Temperature Tj

Current Consumption Iq2 vs.

Output Current IQ

Iq-Tj.vsd

0.1

[mA]

-40

[°C]

-20 20 40 80 100

060 140120

[µA]

= 13.5V

EN/ADJ

= 0 V

= 13.5V

EN/ADJ

= 5 V

= 1 mA

= 30 mA

[mA]

110

Iq-IQ.vsd

0.1

[mA]

EN/ADJ

= 5 V

= 9 V

= 32 V

= 13.5 V

= 32 V

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Data sheet 13 Rev. 1.0, 2007-07-24

TLE4250-2

Electrical Characteristics

Current Consumption Iq2 vs.

Input Voltage VI

[V]

14 18

[mA]

Iq-V I.v sd

10 22

= 50 mA

ADJ

= 5 V

= 30 mA

= 10 mA

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TLE4250-2

Electrical Characteristics

Data sheet 14 Rev. 1.0, 2007-07-24

5.3 Adjust / Enable Input

In order to reduce the quiescent current to a minimum, the TLE4250-2G can be switched to stand-by mode by

setting the adjust/enable input “ADJ/EN” to “low”.

Typical Performance Characteristics Adjust / Enable Input

VADJ/EN = 5V (unless otherwise noted)

Table 3 Electrical Characteristics Adjust / Enable

VI = 13.5 V; VADJ ≥ 2.5 V; -40 °C ≤ Tj ≤ 150 °C;

all voltages with respect to ground, positive current flowing into pin (unless otherwise specified).

Pos. Parameter Symbol Limit Values Unit Conditions

Min. Typ. Max.

5.3.1 Adjust / Enable

Input Current

IADJ –0.10.5µAVADJ = 5 V;

5.3.2 Adjust / Enable

Low Signal Valid

VADJ,low ––0.4VVQ = 0 V;

5.3.3 Adjust / Enable

High Signal Valid

(Tracking Region)

VADJ,high 2.5 – 36 V |VQ - VADJ| < 25 mV;

Startup Sequence

t[µs]

20 60 80 120 140

V [V]

4250-2_startup.vsd

40 100

ADJ

Overshoot depends on

load current, C

,ESR

/ dt =

Q,max

-I

Load

) / C

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TLE4250-2

Package Outlines

Data sheet 16 Rev. 1.0, 2007-07-24

5 Package Outlines

Figure 3 Outline PG-SCT595-5

Figure 4 Footprint PG-SCT595-5

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).

For further information on alternative packages, please visit our website:

http://www.infineon.com/packages Dimensions in mm

GPW05997

1.1 MAX.

0.1 MAX.

(2.2)

(0.3)

(0.4)

(0.23)1)

(0.13)

1) Contour of slot depends on profile

of gull-wing lead form

1.2

-0.05

+0.1

±0.2

2.9 B

+0.2

acc. to DIN 6784

0.3

-0.05

+0.1

0.6

-0.05

0.95

1.9

0.25

±0.1

10˚ MAX.

1.6

10˚ MAX.

±0.1

0.25

±0.1

2.5

0.15

-0.06

+0.1

0.2

HLG09053

2.3

1.3

2.9

1.9

0.4

0.75

0.95

HLG09090

2.3

1.3

1.6 1.3 MIN.

0.4

1.45

0.75

0.95

Reflow Soldering Wave Soldering

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Data sheet 17 Rev. 1.0, 2007-07-24

TLE4250-2

Revision History

6 Revision History

Revision Date Changes

Rev. 1.0 2007-07-24 • Final Datasheet Initial Version

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Edition 2007-07-24

Published by

Infineon Technologies AG

81726 Munich, Germany

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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