INFINEON TLE 6286 User Manual

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LIN-Transceiver LDO TLE 6286

Target Data Sheet

1Overview

1.1 Features

• Single-wire transceiver, suitable for LIN protocol

• Transmission rate up to 20 kBaud

• Compatible to LIN specification

• Compatible to ISO 9141 functions

• Very low current consumption in sleep mode

• Control output for voltage regulator

• Short circuit proof to ground and battery

• Overtemperature protection

• Output voltage tolerance ≤ ± 2 %

• 200 mA output current capability

• Low-drop voltage

• Very low standby current consumption

• Overtemperature protection

• Reverse polarity protection

• Short-circuit proof

•Watchdog

• Wide temperature range

• Suitable for use in automotive electronics

P-DSO-16-4

Type Ordering Code Package

TLE 6286 G on request P-DSO-16-4

1.2 Description

The TLE 6286 is a single-wire transceiver with a LDO. It is chip by chip integrated circuit
in a P-DSO-16-4 package. It works as an interface between the protocol controller and
the physical bus. The TLE 6286 is especially suitable to drive the bus line in LIN systems
in automotive and industrial applications. Further it can be used in standard ISO9141
systems.

In order to reduce the current consumption the TLE 6286 offers a sleep operation mode.
In this mode a voltage regulator can be controlled in order to minimize the current
consumption of the whole application. The on-chip voltage regulator is designed for this

Version 1.02 1 2001-10-15

Target Data TLE 6286

application but it is also possible to use an external voltage regulator. A wake-up caused
by a message on the bus enables the voltage regulator and sets the RxD output low until
the device is switched to normal operation mode.

®

The IC is based on the Smart Power Technology SPT

which allows bipolar and CMOS
control circuitry in accordance with DMOS power devices existing on the same
monolithic circuit.

The TLE 6286 is designed to withstand the severe conditions of automotive applications.

Version 1.02 2 2001-10-15

1.3 Pin Configuration (top view)

Target Data TLE 6286

GND

RD

V

INHO

RxD

ENLIN

GND

GND

1

2

3

CC

4

5

6

7

89

P-DSO-16-4

116

Leadframe

16

15

14

13

12

11

10

GND

RO

INHIWD

V

BAT

BUS

TxD

V

GND

S

GND

Figure 1 Pinout

RD

WD

V

CC

INHO

RxD

ENLIN

GND

2

Chip:

Voltage

Regulator

4

5

6

7 10

8

Chip:

Transceiver

P-DSO-16-4

15

RO

143

INHI

13

V

BAT

12

BUS

11

TxD

V

S

9

GND

Version 1.02 3 2001-10-15

Target Data TLE 6286

1.4 Pin Definitions and Functions:

Pin No. Symbol Function

1,8,9,16 GND Ground; place to cooling tabs to improve thermal behavior

2RDReset delay; connected to ground with capacitor

3WDWindow Watchdog; rising-edge triggered, for monitoring a

microcontroller

4V

CC

5V Output; connected to GND with 22µF capacitor, ESC<3Ω

5 INHO Inhibit LIN Output; to control a voltage regulator

6RxDReceive Data Output; internal 30kΩ pull up to Vs, LOW in

dominat state

7ENLINEnable LIN Input; integrated 30kΩ pull down, transceiver in

normal operation mode when HIGH

10 V

S

5V Supply Input; VCC input to supply the LIN transceiver

11 TxD Transmit Data Input; internal 30kΩ pull up to Vs, LOW in

dominant state

12 BUS LIN BUS Output/Input; internal 30kΩ pull up to Vs, LOW in

dominant state

13 V

BAT

Battery Supply Input; a reverse current protection diode is
required, block GND with 100nF ceramic capacitor and 22µF
capacitor

14 INHI Inhibit Voltage Regulator Input; TTL compatible, low active

input

15 RO Reset Output; open collector output connected to the output via

a resistor of 30kΩ

Version 1.02 4 2001-10-15

1.5 Functional Block Diagram

Target Data TLE 6286

V

Bus

BAT

13

12

TLE 6259 G

30 k

5

INHO

10

V

S

Ω

Output

Stage

Driver

Mode

Control

30 k

Ω

7

ENLIN

Temp.-

Protection

11

TxD

Receiver

6

RxD

5

GND

WD

3

Temperature

Sensor

13

V

BAT

Bandgap

Reference

Adjustment

Figure 2 Block Diagram

Control

Amplifier

INHI

Buffer

Saturation

Control

and

Protection

Circuit

Watchdog

Generator

TLE 4263 G

114

GND

Reset

4

V

CC

2

RD

15

RO

Version 1.02 5 2001-10-15

Target Data TLE 6286

2 Circuit Description

The TLE 6286 is a single-wire transceiver combined with a LDO. It is a chip by chip
integrated circuit in a P-DSO-16-4 package. It works as an interface between the
protocol controller and the physical bus. The TLE 6286 is especially suitable to drive the
bus line in LIN systems in automotive and industrial applications. Further it can be used
in standard ISO9141 systems. The on-chip voltage regulator with watchdog is designed
for sleep mode applications but it is also possible to use an external voltage regulator.

Start Up

Power Up

Normal Mode

ENLIN

INHO

high high

ENLIN

low

ENLIN
(V

CC

high
ON)

Sleep Mode

ENLIN

INHO

low floating

1)

after wake-up via bus

2)

ON when INHO not connected to INHI

3)

after start up

Figure 3 Operation Mode State Diagram

V

CC

ON

V

CC

OFF

2)

ENLIN high

Stand-By

INHO

ENLIN

low high

Wake Up
t > t

WAKE

RxD

low
high

V

CC

1)

ON

3)

2.1 Operation Modes

In order to reduce the current consumption the TLE 6286 offers a sleep operation mode.
This mode is selected by switching the enable input EN low (see figure 3, state
diagram). In the sleep mode a voltage regulator can be controlled via the INH output in
order to minimize the current consumption of the whole application. A wake-up caused
by a message on the communication bus automatically enables the voltage regulator by
switching the INH output high. In parallel the wake-up is indicated by setting the RxD
output low. When entering the normal mode this wake-up flag is reset and the RxD
output is released to transmit the bus data.

Version 1.02 6 2001-10-15