TH8065
Voltage Regulator with LIN Transceiver and Watchdog
Contents
1.
2.
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
3.
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.
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
5.
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
6.
7.
8.
8.1
8.2
PIN Description .................................................................................................................................... 33
Mechanical Specification .................................................................................................................... 34
Tape and Reel Specification ............................................................................................................... 35
Tape Specification.......................................................................................................................................... 35
Reel Specification .......................................................................................................................................... 36
9.
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
MELEXIS [ Melexis Microelectronic Systems ]
