Datasheet TLE4250-2 Datasheet (lnfineon)

Data sheet, Rev. 1.0, July 2007

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TLE4250-2

Low Dropout Voltage Tracking Regulator

Automotive Power

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 ≤

V

≤ +45 V

I

• Reverse Polarity Protection

• Output Short Circuit Proof to Ground and Supply

• Overtemperature Protection

• Temperature Range -40 °C ≤

T

≤ 150 °C

j

• Green Product (RoHS compliant)

• AEC Qualified

PG-SCT595-5

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

V

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

I

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”.

Type Package Marking

TLE4250-2G PG-SCT595-5 52

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

2 Block Diagram

TLE4250-2

Block Diagram

Volt a ge divider optional

Supply

C

I

Reference

I

ADJ/ EN

ADJ/EN

Bl ockDi agram.vsd

Internal

Supply

TLE 4250-2

Saturation Control

Current Limit ation

Temp.

Protection

GND

Figure 1 Block Diagram and Simplified Typical Application

3 Pin Configuration

3.1 Pin Assignment

ADJ /EN

GND

1

5

2

GND

Q

Regulated Output Voltage

C

Q

off-board

load

I

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.

43

Pinout.vsd

Q

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

4 General Product Characteristics

4.1 Absolute Maximum Ratings

TLE4250-2

General Product Characteristics

Absolute Maximum Ratings

1)

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

Pos. Parameter Symbol Limit Values Unit Conditions

Min. Max.

Voltages

4.1.1 Input voltage

4.1.2 Output voltage

4.1.3 Adjust / Enable Input

V

I

V

Q

V

ADJ/EN

-42 45 V –

-1 40 V –

-0.3 40 V –

Temperatures

4.1.4 Junction Temperature

4.1.5 Storage Temperature

T

j

T

stg

-40 150 °C–

-50 150 °C–

ESD Susceptibility

4.1.6 ESD Resistivity

4.1.7 V

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

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

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

V

ESD,HBM

ESD,CDM

-3 3 kV HBM

-2 2 kV CDM

2)

3)

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.

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

TLE4250-2

General Product Characteristics

4.2 Functional Range

Pos. Parameter Symbol Limit Values Unit Conditions

Min. Max.

4.2.1 Input Voltage

4.2.1 Adjust / Enable Input Voltage

(Voltage Tracking Range)

4.2.2 Junction Temperature

4.2.3 Output Capacitor Requirements

4.2.4 ESR

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

2) relevant ESR value at f = 10 kHz

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.

V

I

V

ADJ/EN

T

j

C

Q

440 V–

2.5 36 V –

-40 150 °C–

1– µF– –3 Ω –

CQ

1)

2)

4.3 Thermal Resistance

Pos. Parameter Symbol Limit Value Unit Conditions

Min. Typ. Max.

4.3.5 Junction to Ambient

R

thJA

– 81 – K/W 2s2p board

4.3.1 – 217 – K/W Footprint only

4.3.2 – 117 – K/W 300 mm2 PCB heatsink

2)

area

4.3.3 – 103 – K/W 600 mm2 PCB heatsink

2)

area

4.3.4 Junction to Soldering Point R

1) Specified R (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.

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.

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

thJA

thJSP

– 30 – K/W Pins 2, 5 fixed to T

1)

2)

A

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

TLE4250-2

Electrical Characteristics

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 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

ESR

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

CQ

An input capacitor

C

is recommended to buffer line influences. Connect the capacitors close to the IC terminals.

I

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.

C

, the load current, the chip

Q

Table 1 Electrical Characteristics Tracking Regulator

V

= 13.5 V; V

I

≥ 2.5 V; -40 °C ≤ Tj ≤ 150 °C; all voltages with respect to ground (unless otherwise specified).

ADJ/EN

Pos. Parameter Symbol Limit Values Unit Conditions

Min. Typ. Max.

5.1.1 Output Voltage Tracking

Accuracy

5.1.2 -25 – 25 mV 1 mA ≤

5.1.3 -25 – 25 mV 1 mA ≤

5.1.4 Load Regulation

∆

|d

V

Q

-5 – 5 mV 1 mA ≤ IQ ≤ 10 mA; 6 V ≤

6 V ≤

V

|– – 15 mV IQ = 1 mA to 30 mA;

Q,load

V

≤ 16 V

I

≤ 50 mA;

Q

V

≤ 28 V

I

≤ 10 mA;

Q

V

≤ 40V

I

steady-state

5.1.5 Line Regulation steady-state

5.1.6 Power Supply Ripple Rejection

5.1.7 Dropout Voltage

V

= VI - V

dr

Q

5.1.8 Output Current Limitation

|d

V

Q,line

PSRR

V

dr

I

Q,max

|– – 10 mV VI = 6 V to 40 V;

I

= 10 mA

Q

–48– dBf

= 100 Hz;

ripple

V

ripple

= 1 Vpp

– 100 300 mV IQ = 10 mA

V

≥ 4 V 2)

ADJ

51 85 120 mA VQ = (V

ADJ

1)

- 0.1 V)

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

Electrical Characteristics

Table 1 Electrical Characteristics Tracking Regulator

V

= 13.5 V; V

I

≥ 2.5 V; -40 °C ≤ Tj ≤ 150 °C; all voltages with respect to ground (unless otherwise specified).

ADJ/EN

Pos. Parameter Symbol Limit Values Unit Conditions

Min. Typ. Max.

5.1.9 Reverse Current I

5.1.10 Reverse Current at Negative Input Voltage

Q

I

-5 -1 – mA VI = 0 V;

V

= 16 V;

Q

V

= 5 V

ADJ

-10 -2 – mA VI = -16 V;

V

= 0 V;

Q

V

= 5 V

ADJ

Overtemperature Protection:

5.1.11 Junction Temperature Equilibrium

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

2) Measured when the output voltage

T

j,eq

V

has dropped 100 mV from its nominal value.

Q

151 – 200 °C Tj increasing due to power

dissipation generated by the IC

1)

TLE4250-2

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

Typical Performance Characteristics Tracking Regulator

V

= 5 V (unless otherwise noted)

ADJ/EN

TLE4250-2

Electrical Characteristics

Output Voltage Adjust Voltage

V

[V]

Q

4

3

2

T

= 150 °C

j

1

V

Q

V

ADJ

V

1

vs.

= 13. 5 V

I

VQ-VADJ.vsd

T

= -40 °C

j

234

V

[V]

ADJ

Output Voltage Input Voltage

V

Q

[V]

V

4

3

2

1

V

vs.

Q

V

I

= 13.5 V

I

T

= -40 °C

j

T

= 150 °C

j

3

VQ-VI.v sd

V

dr

57

V

[V]

I

Maximum Output Current IQ vs. Input Voltage

V

I

120

V

I

Q

[mA]

ADJ

= 5 V

80

60

40

20

0

10 40

20 30

Tj = 25 °C

Tj = 125 °C

V

SOA.VSD

[V]

I

Line Regulation d

V

Q,line

Input Voltage Change d

∆

V

[mV]

Q

0.3

0.2

0.1

V

= 6 V

I,initial

V

= 5 V

ADJ

I

= 5 mA

Q

0

steady-state condition

5 1520 3035

0

10 25

vs.

V

)

I

∆

V

dVQ -dVI.vs d

40

[V]

I

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

Typical Performance Characteristics Tracking Regulator

V

= 5 V (unless otherwise noted)

ADJ/EN

TLE4250-2

Electrical Characteristics

Load Regulation d

V

Q,line

Output Current Change d

∆

V

[mV]

Q

-2

-4

T

-6

-8

steady-state condition

0

12

vs.

I

Q

I

Q ,init ial

V

= 5 V

ADJ

T

= 25 °C

j

= 125 °C

j

24 36 48

dVQ -dIQ.vs d

= 1 mA

∆Ι

Q

[mA]

Output Capacitor Series Resistor vs. Output Current

10

ESR

CQ

[Ω]

1

0.1

0.01 0

I

Q

C

Q

Stable

Region

V

< 28 V

I

-40 °C <

10 40

20 30

ESR

C

Q

= 1 µF

T

CQ

ESR-IQ .vsd

= 2.2 µF

< 150 °C

j

I

[mA]

Q

50

Line Transient Response Load Transient Response

dVI -reponse.vsd

∆

V

[mV]

V

[V]

Q

-20

-40

I

16

0

I

= 5 mA

Q

C

= 2.2 µF C eram ic

Q

9

0

20 80

40 60

t

[µs]

∆

V

[mV]

Ι

[mA]

Q

0

-50

V

= 13.5 V

I

V

= 5 V

AD J

C

= 2.2 µF Ceram ic

Q

30

5

0

20 80

40 60

dIQrespons e.vsd

t

[µs]

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

Typical Performance Characteristics Tracking Regulator

V

= 5 V (unless otherwise noted)

ADJ/EN

TLE4250-2

Electrical Characteristics

Tracking Accuracy ∆

V

Junction Temperature

∆

V

Q

[mV]

8

4

0

-4

-20 20 40 80 100

-40

0 60 140120

vs.

Q

T

V

Dropout Voltage

j

I

= 50 mA

Q

dVQ-Tj.v sd

Output Current

V

[mV]

dr

vs.

dr

I

Q

T

= 150 °C

j

T

= 25 ° C

j

V dr-IQ_l og.v sd

100

I

= 1 mA

Q

10

110

T

[°C]

j

50

I

[mA]

Q

Dropout Voltage Vdr vs. Junction Temperature

V

[mV]

dr

250

200

150

100

0 60 140120

-20 20 40 80 100

-40

T

j

I

= 10 m A

Q

T

V dr-Tj.v sd

[°C]

j

Output Current Limitation I vs. Output Voltage

V

Q

5

V

[V]

Q

3

Tj = 125° C Tj = 25°C

2

1

0

20

40

60

Q,max

VI = 13.5 V

= 5 V

V

ADJ

80 100

IQmax-VQ.vsd

[mA]

I

Q

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

Typical Performance Characteristics Tracking Regulator

V

= 5 V (unless otherwise noted)

ADJ/EN

TLE4250-2

Electrical Characteristics

Reverse Output Current Output Voltage

+0.5

I

[mA]

Q

-0.5

-1

-1.5

-2

V

Q

0

832

I

vs.

Q

V

= 0 V

I

V

ADJ

T

= 150 °C

j

16 24

= 5 V

T

= -40 °C

j

I

vs.

I

V

I

V

= 0 V

Q

V

= 5 V

ADJ

II-VI.vsd

IQ-VQ.vsd

Reverse Current Input Voltage

+0.5

I

[mA]

I

-0.5

T

-1

-1.5

= -40 °C

j

T

= 150 °C

j

-2

-32

V

[V]

Q

-24 0

-16 -8

V

[V]

I

Power Supply Ripple Rejection

60

PSRR

[dB]

40

30

20

V

RIPPLE

V

= 13.5 V

0.01

IN

C

= 2.2 µF Ceramic

Q

T

= 25 °C

j

10

PSRR

PSR R.vsd

I

= 5 m A

Q

= 1 V

0.1 1 100

10

f

[kHz]

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

Electrical Characteristics

5.2 Current Consumption

Table 2 Electrical Characteristics Current Consumption

V

= 13.5 V; V

I

Pos. Parameter Symbol Limit Values Unit Conditions

5.2.1 Quiescent Current Stand-by Mode

5.2.2 Current Consumption

I

= II - I

5.2.3 – 3 5 mA

q

5.2.4 Current Consumption Dropout Region;

Typical Performance Characteristics Current Consumption

V

= 5 V (unless otherwise noted)

ADJ/EN

≥ 2.5 V; -40 °C ≤ Tj ≤ 150 °C; all voltages with respect to ground (unless otherwise specified).

ADJ/EN

Min. Typ. Max.

I

q1

I

q2

Q

I

q3

I

= II - I

q

Q

–1020µAV

T

≤ 0.4 V;

ADJ/EN

≤ 85 °C

j

– 140 200 µA IQ ≤ 1 mA;

I

≤ 30 mA;

Q

–12mAV

= VI = 5 V;

ADJ

I

= 0 mA

Q

TLE4250-2

Current Consumption

I

q1

vs. Junction Temperature

I

[mA]

q2

V

= 13.5V

I

V

= 5 V

EN/ADJ

V

= 13.5V

I

V

= 0 V

EN/ADJ

-20 20 40 80 100

060 140120

I

q1

1

0.1

[µA]

16

12

-40

, Iq2

T

I

= 5 V

q2

vs.

V

= 13.5 V

I

V

= 9 V

I

V

I

Iq-IQ.vsd

= 32 V

Current Consumption

j

I

= 30 mA

Q

I

= 1 mA

Q

Iq-Tj.vsd

Output Current

I

[mA]

q

V

I

Q

EN/ADJ

1

V

= 32 V

I

T

[°C]

j

0.1 110

I

Q

50

[mA]

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

Current Consumption Iq2 vs. Input Voltage

12

I

[mA]

q

V

I

8

= 50 m A

Q

6

TLE4250-2

Electrical Characteristics

Iq-VI.vsd

V

= 5 V

ADJ

4

I

= 30 mA

Q

2

6

I

= 10 m A

Q

10 22

14 18

V

[V]

I

24

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

TLE4250-2

Electrical Characteristics

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”.

Table 3 Electrical Characteristics Adjust / Enable

V

= 13.5 V; V

I

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

Pos. Parameter Symbol Limit Values Unit Conditions

5.3.1 Adjust / Enable Input Current

5.3.2 Adjust / Enable Low Signal Valid

5.3.3 Adjust / Enable High Signal Valid (Tracking Region)

≥ 2.5 V; -40 °C ≤ Tj ≤ 150 °C;

ADJ

I

ADJ

V

ADJ,low

V

ADJ,high

Min. Typ. Max.

–0.10.5µAV

ADJ

= 5 V;

––0.4VVQ = 0 V;

2.5 – 36 V |VQ - V

ADJ

| < 25 mV;

Typical Performance Characteristics Adjust / Enable Input

VADJ/EN = 5V (unless otherwise noted)

Startup Sequence

4250-2_startup.v sd

V

[V]

4

3

2

1

Overshoot depends on load current, C

V

ADJ

Q

d (

, ESR

I

V

Q

Q,max

CQ

/ dt =

-

I

Load

) /

C

Q

20 60 80 120 140

0

40 100

t

[µs]

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

5 Package Outlines

±0.2

2.9 (2.2)

+0.1

1.2

-0.05

1)

(0.4)

1)

(0.13)

(0.23)

+0.1

0.6

-0.05

B

(0.3)

+0.2

acc. to DIN 6784

34521

+0.1

0.3

-0.05

0.95

±0.1

2.5

1.1 MAX.

±0.1

0.25 10˚ MAX.

0.2MA

0.1 MAX.

+0.1

0.15

-0.06

±0.1

1.6

10˚ MAX.

A

TLE4250-2

Package Outlines

M

0.25

Figure 3 Outline PG-SCT595-5

2.3

1.3

0.75

0.95

Reflow Soldering Wave Soldering

1.9

B

1.9

0.4

HLG09053

2.9

1) Contour of slot depends on profile of gull-wing lead form

GPW05997

2.3

1.3

1.45

0.75

0.95

1.6 1.3 MIN.

0.4

HLG09090

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

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

6 Revision History

Revision Date Changes

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

TLE4250-2

Revision History

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

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.