TH8065KDCAA MELEXIS [Melexis Microelectronic Systems], TH8065KDCAA Datasheet
TH8065KDCAA
Related parts for TH8065KDCAA
TH8065KDCAA Summary of contents
Page 1
Features Compatible to LIN Specification 2.0 and SAE J2602 o Operating voltage ... Low standby current consumption of typ. 15 μA in sleep mode o “noload” current < 200µA Linear low drop voltage ...
Page 2
Contents 1. Functional Diagram ............................................................................................................................... 4 2. 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 ...
Page 3
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 ...
Page 4
Functional Diagram VSUP Aux. Supply BG Adjust ment EN VCC CWD CWD comp WDI_sig WDI 50k VSUP 30k BUS GND TH8065 – Datasheet 3901008065 Voltage Regulator with LIN Transceiver and Watchdog Vaux control amplifier current limitation VBG Temp. Protection ...
Page 5
Electrical Specification All voltages are referenced to ground (GND). Positive currents flow into the IC. The absolute maximum ratings (in accordance with IEC 134) given in the table below are limiting values that do not lead to a permanent ...
Page 6
Static Characteristics Unless otherwise specified all values in the following tables are valid for -40 to 125 C. All voltages are referenced to ground (GND), positive currents flow into the IC. AMB 2.3.1. Voltage Regulator ...
Page 7
Parameter Reset threshold - POR Reset threshold – low voltage reset Vres Hysteresis – RESHYS RES(ON) RES(OFF) Master reset threshold Input voltage low Input voltage high Hysteresis Pull-down resistor EN low Pull-down current EN high ...
Page 8
LIN Bus Interface Parameter Pull up current BUS (recessive) Pull up resistor BUS Reverse current BUS (recessive) Reverse current BUS (loss of battery) Reverse current BUS (loss of ground) Receive threshold Centre point of receive threshold ...
Page 9
Dynamic Characteristics 6V ≤ V ≤ 18V, -40°C ≤ T ≤ 125°C, unless otherwise specified SUP A Parameter Reset time Reset rising time Discharge time CWD-capacity Watchdog period Watchdog reset time Wake up time Debouncing time EN Propagation delay ...
Page 10
Parameter LIN transceiver parameter according to LIN Physical Layer Spec. rev. 2.0, table 3.4 (20kbit/s) Conditions: Normal slew mode; V TxD signal 50µs, t Bit Minimal recessive bit time [2] Maximum recessive bit time [2] Duty cycle 1 ...
Page 11
Timing Diagrams 50% TxD t df_TXD V BUS 95% BUS RxD Figure 2 - Timing diagram for propagation delays TxD t x_dom_max t 100% V SUP BUS 58.1% (61.6%) 28.4% (25.1 Remark: The levels for low ...
Page 12
Normal Mode t pdEN_sleep 5V VCC 0V EN TxD Figure 4 - Timing Diagram for EN mode selection TH8065 – Datasheet 3901008065 Voltage Regulator with LIN Transceiver and Watchdog Sleep Mode Normal Mode 4.5V 0.5V t pdEN_norm 2.0V 0.8V Page ...
Page 13
Functional Description The TH8065 consists of a low drop voltage regulator 5V/70mA and a LIN bus transceiver, which is a bi- directional bus interface for data transfer between LIN bus and the LIN protocol controller. Additionally integrated is a ...
Page 14
Normal Mode This mode is the base mode. The bus transceiver is able to send with a max baud rate of 20kbit/s. The whole TH8065 is active. Switching to normal mode can be done via the following actions: - Start ...
Page 15
Initialization Initialization starts if the power supply is switched on as well as every rising edge on of the TH8065 via the EN pin. VSUP- Power- switched on the TH8065 starts to normal mode via the ...
Page 16
VSUP under voltage reset The under voltage detection unit inhibits an undefined behaviour of the TH8062 under low voltage condition (VSUP < 4V). If VSUP drops below V IC will be switched to POR state. The following increasing of ...
Page 17
LIN BUS Transceiver The TH8065 has an integrated bi-directional bus interface device for data transfer between LIN bus and the LIN protocol controller. The transceiver consists of a driver with slew rate control, wave shaping and current limitation and ...
Page 18
Slew Modes and Data rates The TH8065 is a constant slew rate transceiver which means that the bus driver works with a mode depended slew rate. In normal mode the slew rate is typical 1.6 V/µs and in low slew ...
Page 19
Output RxD The received BUS signal will be output to the RxD pin: BUS < V – 0 thr_cnt thr_hys BUS > 0 thr_cnt thr_hys This output is a push-pull driver between VCC and ...
Page 20
Linear Regulator The TH8065 has an integrated low drop linear regulator with a p-channel-MOSFET as driving transistor. This regulator outputs a voltage of 5V ±3% and a current of ≤70mA within an input voltage range of 6V ≤ V ...
Page 21
RESET and Watchdog The TH8065 contains a combined reset- and watchdog-unit which secures the correct initialization and generation of the reset signal. VSUP, VCC V RES int. POR signal t Res RESET Start-up ON delay WDI CWD V CWDH ...
Page 22
VSUP T>Tj VCC V RES t Res RESET Initialisation Figure 13 - Output current of reset output vs. VCC voltage 3.8.2. Watchdog The Watchdog can be used for observation of the connected microcontroller. It has to be triggered via the ...
Page 23
WDI CWD V CWDH V CWDM V CWDL RESET The reset output will be switched from high to low (watchdog reset), if the voltage on pin CWD reaches V . The reset output stays at low level until the voltage ...
Page 24
Mode Input EN The TH8065 is switched into the sleep mode with a falling edge and into normal mode with a rising edge at the EN pin. The normal mode will be kept as long high. ...
Page 25
If the application doesn’t need the wake up capability of the TH8065 a direct connection EN to VSUP is possible. In this case the TH8065 operates in permanent normal mode. Also possible is the external (outside of the module) control ...
Page 26
Application Hints 4.1 Safe Operating Area The maximum power dissipation depends on the thermal resistance of the package and the PCB, the temperature difference between Junction and Ambient as well as the airflow. The power dissipation can be calculated ...
Page 27
The linear regulator of the TH8065 operates with input voltages up to 18V and can output a current of 70mA. The maximum power dissipation limits the maximum ...
Page 28
Load Capacitor on VCC C L The regulator is stabilized by the output capacitor C connected to the 5V output to insure stability. This capacitor should maintain its ESR in the stable region of the ESR curve (See Figure 20) ...
Page 29
Tantalum Capacitors This type of capacitor has a low dependence of the capacitance and the ESR from the temperature and is therefore well suited as VCC load capacitor. Aluminium Capacitors These capacitors show a strong influence of the capacitance and ...
Page 30
Connection to Flash-MCU While programming a flash MCU the TH8065 should be disconnected from the MCU. This can be done via disconnecting the supply voltage from the TH8065 or by switching off with the EN pin. The reverse current ...
Page 31
Operating during Disturbance 5.1 Operating without VSUP or GND The absence GND connection will not influence or disturb the communication between other bus SUP nodes. No reverse supply of the IC can appear if without GND ...
Page 32
Undervoltage VSUP The combination of dynamic power on reset and low voltage reset guarantees a defined start up behaviour. If the supply voltage VSUP drops below 3V the low voltage detection becomes active. If the VSUP voltage rises again ...
Page 33
PIN Description Pin Name IO-Typ 1 GND P 2 VSUP GND P 5 BUS I/O 6 CWD I/O 7 GND P 8 GND P 9 WDI I 10 RxD O 11 TxD I 12 ...
Page 34
Mechanical Specification SOIC14NB Small Outline Integrated Circiut (SOIC), SOIC 14, 150 mil All Dimension in mm, coplanarity < 0.1 mm min 0.10 0.36 0.19 max 0.25 0.45 0.25 All Dimension in inch, coplanarity < 0.004” min ...
Page 35
Tape and Reel Specification 8.1 Tape Specification max. 10° IC pocket Top View Cover Tape Standard Reel with diameter of 13“ Package SOIC14NB D ...
Page 36
Reel Specification max 330 Width of half reel 8 mm TH8065 – Datasheet 3901008065 Voltage Regulator with LIN Transceiver and Watchdog 2.0 ±0.5 13.0 +0,5/-0 min 1 100,0 8,4 Page ...
Page 37
ESD/EMC Remarks 9.1 General Remarks Electronic semiconductor products are sensitive to Electro Static Discharge (ESD). Always observe Electro Static Discharge control procedures whenever handling semiconductor products. 9.2 ESD-Test The TH8065 is tested according CDF-AEC-Q100-002 / MIL883-3015.7 (human body model). ...
Page 38
Revision History Version 001 002 Updated Static Characteristics 003 Introduction of variable POR Reset times TH8065 – Datasheet 3901008065 Voltage Regulator with LIN Transceiver and Watchdog Changes Page TH8065 Remark Date Preliminary Release Oct. 2004 April ...
Page 39
Assembly Information Standard information regarding manufacturability of Melexis products with different soldering processes Our products are classified and qualified regarding soldering technology, solderability and moisture sensitivity level according to following test methods: Reflow Soldering SMD’s (Surface Mount Devices) • ...
Page 40
Disclaimer Devices sold by Melexis are covered by the warranty and patent indemnification provisions appearing in its Term of Sale. Melexis makes no warranty, express, statutory, implied description regarding the information set forth herein or regarding the ...