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TH8065: DescriptionVoltage Regulator with LIN Transceiver and Watchdog; File Size1MB，40 Pages; ManufacturerMelexis; Websitehttps://www.melexis.com/zh

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TH8065 Overview

Voltage Regulator with LIN Transceiver and Watchdog

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TH8065

Voltage Regulator with LIN Transceiver and Watchdog

Features

Compatible to LIN Specification 2.0 and SAE J2602

Operating voltage V

= 6 ... 18 V

Low standby current consumption of typ. 15

μA

in sleep mode

“noload” current < 200µA

Linear low drop voltage regulator 5V/70mA ±2%

Output current limitation

LIN-Bus Transceiver

Compatible to ISO9141 functions

Baud rate up to 20 kBaud

Slew rate control for best EME behavior

Low slew mode for optimized SAE J2602 transmission

High EMI immunity

High signal symmetry for using in RC – based slave nodes up to 2% clock tolerance

Current limitation

Wake-up via LIN bus traffic

Reset output (default 8ms/4.65V)

Reset time adjustable to 4ms, 15ms and 30ms during IC final test

Analogue Watchdog with programmable time constant via external capacity

Over temperature shutdown

Automotive temperature range of –40°C to 125°C

CMOS compatible interface to microcontroller

Load dump protected (40V)

Small SOIC14 package with fused lead frame for low Rth value

Ordering Information

Part No.

TH8065 KDC AA

On Request

TH8065 KDC AB

TH8065 KDC AC

TH8065 KDC AD

Temperature Range

K (-40 to 125 °C)

Package

DC (SOIC14NB)

Version

POR time

A (8ms)

B (4ms)

C (30ms)

D (15ms)

General Description

The TH8065 consists of a low-drop voltage regulator 5V/70mA combined with a Reset/Watchdog unit and a

LIN bus transceiver. The LIN transceiver is suitable for LIN bus systems conform to LIN specification revision

2.0 and SAE J2602.

The combination of voltage regulator and bus transceiver makes it possible to develop simple, but powerful

and cheap slave nodes in LIN Bus systems.

TH8065 – Datasheet

3901008065

Page 1 of 40

May 2006

Rev 003

TH8065

Voltage Regulator with LIN Transceiver and Watchdog

Contents

Functional Diagram ............................................................................................................................... 4

Electrical Specification.......................................................................................................................... 5

2.1

Operating Conditions ....................................................................................................................................... 5

2.2

Absolute Maximum Ratings ............................................................................................................................. 5

2.3

Static Characteristics ....................................................................................................................................... 6

2.3.1.

Voltage Regulator and Reset Unit .......................................................................................................... 6

2.3.2.

LIN Bus Interface.................................................................................................................................... 8

2.4

Dynamic Characteristics .................................................................................................................................. 9

2.5

Timing Diagrams ............................................................................................................................................ 11

Functional Description ........................................................................................................................ 13

3.1

Operating Modes............................................................................................................................................ 13

3.2

Initialization .................................................................................................................................................... 15

3.3

Wake-Up ........................................................................................................................................................ 15

3.4

VSUP under voltage reset.............................................................................................................................. 16

3.5

Overtemperature Shutdown ........................................................................................................................... 16

3.6

LIN BUS Transceiver ..................................................................................................................................... 17

3.7

Linear Regulator............................................................................................................................................. 20

3.8

RESET and Watchdog ................................................................................................................................... 21

3.8.1.

RESET.................................................................................................................................................. 21

3.8.2.

Watchdog ............................................................................................................................................. 22

3.9

Mode Input EN ............................................................................................................................................... 24

4.1

4.2

4.3

4.4

4.5

Application Hints ................................................................................................................................. 26

Safe Operating Area ...................................................................................................................................... 26

Low Dropout Regulator .................................................................................................................................. 27

Application Circuitry ....................................................................................................................................... 29

EMI Supressing.............................................................................................................................................. 29

Connection to Flash-MCU .............................................................................................................................. 30

Operating during Disturbance............................................................................................................ 31

5.1

5.2

5.3

5.4

5.5

5.6

5.7

5.8

5.9

5.10

5.11

Operating without VSUP or GND ................................................................................................................... 31

Short Circuit BUS against VBAT .................................................................................................................... 31

Short Circuit BUS against GND...................................................................................................................... 31

Short Circuit TxD against GND ...................................................................................................................... 31

TxD open ....................................................................................................................................................... 31

Short Circuit VCC against GND ..................................................................................................................... 31

Overload of VCC ............................................................................................................................................ 31

Undervoltage VCC ......................................................................................................................................... 31

Undervoltage VSUP ....................................................................................................................................... 32

Short circuit RxD, RESET against GND or VCC ............................................................................................ 32

Short circuit CWD against GND or VCC ........................................................................................................ 32

8.1

8.2

PIN Description .................................................................................................................................... 33

Mechanical Specification .................................................................................................................... 34

Tape and Reel Specification ............................................................................................................... 35

Tape Specification.......................................................................................................................................... 35

Reel Specification .......................................................................................................................................... 36

9.1

9.2

9.3

ESD/EMC Remarks .............................................................................................................................. 37

General Remarks ........................................................................................................................................... 37

ESD-Test ....................................................................................................................................................... 37

EMC ............................................................................................................................................................... 37

10.

11.

12.

Revision History................................................................................................................................... 38

Assembly Information ......................................................................................................................... 39

Disclaimer............................................................................................................................................. 40

TH8065 – Datasheet

3901008065

Page 2 of 40

May 2006

Rev 003

TH8065

Voltage Regulator with LIN Transceiver and Watchdog

List of Figures

Figure 1 - Block diagram.......................................................................................................................... 4

Figure 2 - Timing diagram for propagation delays................................................................................. 11

Figure 3 - Timing diagram for duty cycle acc. to LIN 2.0 and J2602..................................................... 11

Figure 4 - Timing Diagram for EN mode selection ................................................................................ 12

Figure 5 - State diagram of operating modes........................................................................................ 13

Figure 6 - Operating of power-on and under-voltage reset ................................................................... 15

Figure 7 - Receive mode impulse diagram............................................................................................ 17

Figure 8 - TxD input circuitry ................................................................................................................. 18

Figure 9 - RxD output circuitry............................................................................................................... 19

Figure 10 - Characteristic of current limitation VCC = f (I

VCC

) ............................................................... 20

Figure 11 - Reset and Watchdog behaviour.......................................................................................... 21

Figure 12 - Reset behaviour .................................................................................................................. 22

Figure 13 - Output current of reset output vs. VCC voltage .................................................................. 22

Figure 14 - Watchdog timing ................................................................................................................. 23

Figure 15 - EN input circuitry ................................................................................................................. 24

Figure 16 - EN controlled via MCU........................................................................................................ 24

Figure 17 - Permanent normal mode..................................................................................................... 25

Figure 18 - Power dissipation LIN transceiver @ 20kbit ....................................................................... 26

Figure 19 - Save operating area............................................................................................................ 27

Figure 20 - ESR Curves for 6.8μF

≤

100μF and Frequency of 100 kHz ....................................... 28

Figure 21 - Application circuit (slave node) ........................................................................................... 29

Figure 22 – Example circuitry for connection of RxD to MCU for flash programming........................... 30

TH8065 – Datasheet

3901008065

Page 3 of 40

May 2006

Rev 003

TH8065 Related Products

	TH8065	TH8065KDCAB	TH8065KDCAC	TH8065KDCAA	TH8065KDCAD
Description	Voltage Regulator with LIN Transceiver and Watchdog	Voltage Regulator with LIN Transceiver and Watchdog	Voltage Regulator with LIN Transceiver and Watchdog	Voltage Regulator with LIN Transceiver and Watchdog	Voltage Regulator with LIN Transceiver and Watchdog
Is it Rohs certified?	-	conform to	conform to	conform to	conform to
Parts packaging code	-	SOIC	SOIC	SOIC	SOIC
package instruction	-	SOP,	SOP,	SOP,	SOP,
Contacts	-	14	14	14	14
Reach Compliance Code	-	compli	compli	compli	compli
JESD-30 code	-	R-PDSO-G14	R-PDSO-G14	R-PDSO-G14	R-PDSO-G14
JESD-609 code	-	e3	e3	e3	e3
length	-	8.65 mm	8.65 mm	8.65 mm	8.65 mm
Number of functions	-	1	1	1	1
Number of terminals	-	14	14	14	14
Maximum operating temperature	-	125 °C	125 °C	125 °C	125 °C
Minimum operating temperature	-	-40 °C	-40 °C	-40 °C	-40 °C
Package body material	-	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	-	SOP	SOP	SOP	SOP
Package shape	-	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR
Package form	-	SMALL OUTLINE	SMALL OUTLINE	SMALL OUTLINE	SMALL OUTLINE
Peak Reflow Temperature (Celsius)	-	260	260	260	260
Certification status	-	Not Qualified	Not Qualified	Not Qualified	Not Qualified
Maximum seat height	-	1.72 mm	1.72 mm	1.72 mm	1.72 mm
Nominal supply voltage	-	12 V	12 V	12 V	12 V
surface mount	-	YES	YES	YES	YES
Telecom integrated circuit types	-	TELECOM CIRCUIT	TELECOM CIRCUIT	TELECOM CIRCUIT	TELECOM CIRCUIT
Temperature level	-	AUTOMOTIVE	AUTOMOTIVE	AUTOMOTIVE	AUTOMOTIVE
Terminal surface	-	Matte Tin (Sn)	Matte Tin (Sn)	Matte Tin (Sn)	Matte Tin (Sn)
Terminal form	-	GULL WING	GULL WING	GULL WING	GULL WING
Terminal pitch	-	1.27 mm	1.27 mm	1.27 mm	1.27 mm
Terminal location	-	DUAL	DUAL	DUAL	DUAL
Maximum time at peak reflow temperature	-	40	40	40	40
width	-	3.9 mm	3.9 mm	3.9 mm	3.9 mm
Base Number Matches	-	1	1	1	1

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