Datasheet TLE 4252 Datasheet (INFINEON)

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Tracking Regulator

Features

• Output tracking tolerance to reference ≤ ±0.2%

• Output voltage adjust down to 1.5 V

• 250 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 ≤

• Output protected against short circuit to GND and
Battery

• Overtemperature protection

• Reverse polarity proof

T

≤ 150 °C

j

TLE 4252

P-TO252-5-1

Short Functional Description

The TLE 4252 is a monolithic integrated low -drop voltage tracking regulator in a very
small SMD package P-TO252-5-1. It is designed to supply off-board systems, e.g.
sensors in engine management systems under the severe conditions of automotive
applications. Therefore the device is equipped with additional protection functions
against reverse polarity and short circuit to GND and battery.

With supply voltages up to 40 V the output voltage follows a reference voltage applied at
the adjust input with h igh acc uracy. Th e referenc e volta ge appli ed direc tly to the adjust
input or by an e.g. external resistor divider can be 1.5 V at minimum.

The output is able to drive loads up to 250 mA at minimum while they follow e.g. the 5 V
output of a main voltage regulator as reference with high accuracy.

The TLE 4252 tracker can be switched into stand-by mode to reduce the current
consumption to very low values. This feature makes the IC suitable for low power battery
applications.

Type Ordering Code Package

TLE 4252 D Q67006-A9669 P-TO252-5-1

Data Sheet 1 Rev. 1.2, 2004-08-11

Block Diagram

Saturation

Control and

Protection

Circuit

TLE 4252

Temperature

Control

I

GND EN

Figure 1 Internal Circuit Blocks

Q

ADJ

TLE 4252 D

AEB03536.VSD

Data Sheet 2 Rev. 1.2, 2004-08-11

TLE 4252

TLE 4252

(P-TO252-5-1 D-Pak)

GND

1

2

I

EN

4

3

ADJ

GND

AEP03534.VSD

5

Q

Figure 2 Pin Configuration (Draft, subject to alternation!)

Table 1 Pin Definitions and Functions (draft, subject to alternation)
Pin No. Symbol Function

1I Supply voltage input; Input for battery or a pre-regulated

voltage of a e.g. DC to DC converter.

2EN Enable input for tracker; An active high signal turns on the

device, with active low the tracker is turned off.
3GNDGround; Connected to the heatsink of the package.
4ADJAdjust input for tracker; Input for the reference voltage

which can be connected directly or by voltage divider to the

reference (see Application Information).
5Q Output voltage of tracker; For a stable operation to avoid

ringing at the output connect a capacitor of

C

≥ 10 µF and

Q

0 ≤ ESR ≤ 5 Ω to GND.

Data Sheet 3 Rev. 1.2, 2004-08-11

Table 2 Absolute Maximum Ratings
Parameter Symbol Limit Values Unit Remarks

Min. Max.

Supply Voltage Input I

TLE 4252

Voltage
Current

Enable Input EN

Voltage
Current

Adjust Input ADJ

Voltage
Current

Output Q

Voltage
Current

Temperature

Junction temperature
Storage temperature

ESD-Protection

V
I

V
I

V
I

V
I

T
T

I

I

EN

EN

ADJ

ADJ

Q

Q

j
stg

-42 45 V –
– – A Limited internally

-42 45 V –
– – A Limited internally

-42 45 V –
– – A Limited internally

-2 45 V –
– – A Limited internally

-40 150 °C–

-50 150 °C–

Voltage

V

ESD

-2 2 kV Human Body Model
(HBM)

Note: Maximum ratings are absolute ratings, exceeding one of these values may cause

irreversible damage to the integrated circuit!

Data Sheet 4 Rev. 1.2, 2004-08-11

Table 3 Operating Range
Parameter Symbol Limit Values Unit Remarks

Min. Typ. Max.

In- and Output Voltage

TLE 4252

Supply voltage
Enable input voltage V
Adjust input voltage
Adjust input voltage
Error amplifier

common mode range

V

V
V

I
EN
ADJ
ADJ

3.5 – 40 V VI > V
0–40V–

1.5 – 40 V –
0–1.5VVQ ≤ V

CMR 1.5 – V

0.5

I

-

V VQ ≤ V

V

= V

FB

+ V

ADJ

+ ∆V

ADJ

+ ∆VQ with

ADJ

Q

dr

Q

Temperature

Junction temperature

T

j

-40 – 150 °C–

Thermal Resistance P-TO252-5-1

Junction to ambient
Junction to ambient R

Junction to ambient R

Junction to case R

1) Worst case regarding peak temperature; zero airflow; mou nt ed on FR4; 80 × 80 × 1.5 mm3; 35 µ Cu; 5 µ Sn

R

thj-a
thj-a

thj-a

thj-c

– – 144 K/W Footprint only
– – 78 K/W Heat sink area

300 mm

2 1)

– – 55 K/W Heat sink area

600 mm

2 1)

––2K/W–

1)

Note: Within this operating range the IC is functional. The electrical characteristics,

however, are not guaranteed over this full range given above.

Data Sheet 5 Rev. 1.2, 2004-08-11

TLE 4252

Table 4 Electrical Characteristics

V

= 13.5 V; 1.5 V ≤ V

I

Parameter Symbol Limit Values Unit Test Condition

Regulator Performance, Tracker Output Q

≤ VI - 0.6 V; -40 °C < Tj < 150 °C; unless otherwise specified

ADJ

Min. Typ. Max.

Output voltage

∆V

tracking accuracy

∆

V

= V

Q

Output voltage

ADJ

- V

Q

∆V

tracking accuracy

V

= V

∆

Q

Drop voltage

ADJ

- V

Q

V

Output current I
Output capacitor C

Current consumption

I

= II - I

q

Q

Current consumption

I

= II - I

q

Q

I

I

Q

Q

dr

Q

Q

-10 – 10 mV 4.5 V < VI < 26 V;

I

1 mA <

< 200 mA;

Q

-10 – 10 mV 3.5 V < VI < 32 V;

I

10 mA <

-25 – 25 mV 3.5 V <
1 mA <

< 100 mA;

Q

V

< 4.5 V;

I

I

< 200 mA;

Q

– 280 600 mV IQ = 200 mA;

V

> 3.5 V;

ADJ

V

= V

EN

250 350 500 mA VQ = 5.0 V

1)

EN, on

2)

10 – – µF0 ≤ ESR ≤ 5 Ω at

10 kHz

q

q

– 1025mAIQ = 200 mA;

V

= 5 V

Q

– 100 150 µA IQ < 100 µA;

T

< 85 °C; VEN = 5 V

j

Quiescent current
(stand-by)

I

= II - I

q

Q

Reverse current
Load regulation ∆
Line regulation ∆

Power supply ripple
rejection

Data Sheet 6 Rev. 1.2, 2004-08-11

I

q

I

r

V

Q

V

Q

–02µA VEN = 0 V;

–0.55mAVQ = 16 V; VI = 0 V
– – 10 mV 1 mA < IQ < 200 mA
– – 10 mV 5 V < VI < 32 V;

PSSR –60–dBf

V

EN/ADJ

T

< 85 °C

j

I

= 5 mA

Q

I, ripple

V

I, ripple

= 0 V;

= 100 Hz;

= 0.5 Vpp

3)

TLE 4252

Table 4 Electrical Characteristics (cont’d)

V

= 13.5 V; 1.5 V ≤ V

I

Parameter Symbol Limit Values Unit Test Condition

Adjust Input ADJ

≤ VI - 0.6 V; -40 °C < Tj < 150 °C; unless otherwise specified

ADJ

Min. Typ. Max.

Input biasing current

I

ADJ

–0.10.5µA V

ADJ

= 5 V

Enable Input EN

Device on voltage

V

EN, on

2.0 – 40 V VQ settled

range
Device off voltage

V

EN, off

0–0.8VVQ < 0.1 V

range
Input current
EN pull-down resistor

1) Measured when the outpu t volt age VQ has dropped 100 mV from the no m inal value.

2) The current limit depends also on the input voltage, see graph output current vs. input voltage in the diagrams
section.

3) Specified by design. Not subject to production test.

I
R

EN

EN

-1 2 5 µA VEN = 5 V
–1.5–MΩ –

Data Sheet 7 Rev. 1.2, 2004-08-11

Application Information

V

BAT

Main µC Supply

I

TLE 4271-2

TLE 4278
TLE 4470

e.g.

etc.

TLE 4252

Q

R

1ADJ

V

DD

µC

e.g. C167

GND

R

2ADJ

4

1

I

I/O

EN

TLE 4252 D

GND

V

< V

Q

5

QADJ

AEA03535.VSD

REF

Figure 3 Application Circuit: Output Voltage < Reference Voltage

Figure 3 shows a typical application circuit with

< V

Q

. Of course, also VQ = V

REF

REF

is

V

feasible by directly connecting the reference pin of the TLE 4252 D to the appropriate
voltage level without voltage divider.

The output voltage calculates to:

R

1ADJ

2ADJ

R

+

(1)

2ADJ



V

V

Q

REF

------------------------------------

×=



R

Data Sheet 8 Rev. 1.2, 2004-08-11

Diagrams

TLE 4252

Output Current Limit
Input Voltage

500

mA

I

Q1,2

400

300

200

100

0

V

I

T

= 25°C

j

0

10 20 30 40 50

I

versus

Q

AED03537.VSD

V

V

I1,2

Data Sheet 9 Rev. 1.2, 2004-08-11

Package Outlines

TLE 4252

+0.15

6.5

-0.10

B

±0.1

1

0...0.15

0.51 min

-0.2

±0.5

6.22

9.9

0.15 max

per side

±0.1

1

(4.17)

5.4

±0.1

±0.15

0.8

5x0.6

A

±0.1

1.14

4.56

M

B

A0.25

All metal surfaces tin plated, except area of cut.

2.3

+0.05

-0.10

0.9

0.5

GPT09161

+0.08

-0.04

+0.08

-0.04

0.1

Figure 4 P-TO252-5-1 (Plastic Transistor Single Outline)

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

Dimensions in mm

Data Sheet 10 Rev. 1.2, 2004-08-11

Edition 2004-08-11
Published by Infineon Technologies AG,

St.-Martin-Strasse 53,
81669 München, Germany

© Infineon Technologies AG 2004.

All Rights Reserved.

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characteristics.

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We hereby disclaim any and all warranties, including but not limited to warranties of non-infringement, regarding

circuits, descriptions and charts stated herein.

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