th3122 Melexis Company, th3122 Datasheet

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th3122

Manufacturer Part Number
th3122
Description
K-bus Transceiver With Integrated Voltage Regulator
Manufacturer
Melexis Company
Datasheet

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Features and Benefits
Ordering Information
Part No.
TH3122
General Description
The TH3122 consists of a low drop voltage
regulator 5V/100mA and a K-Bus transceiver. The
transceiver is suitable for K-Bus systems conform
to ISO 9141.
The combination of voltage regulator and bus
transceiver in combination with the monitoring
3901003122
Rev 004
in normal mode (< 50
K-Bus Transceiver:
Operating voltage V
Very low standby current consumption <100
Linear low drop voltage regulator:
Overtemperature shutdown
Configurable reset time (15ms/100ms) and reset threshold voltage (3.15V / 4.65V)
Low voltage detection at VS
Wake-up by K-BUS traffic and start-up capable independent of EN voltage level
Universal comparator with an input voltage range –24V … 30V and digital output
Load dump protected (40V)
Output voltage 5V± 2%
Output current max. 100mA
Output current limitation
PNP-open emitter driver with slew rate control and current limitation
BUS input voltage -24V ... 30V (independently of V
ISO 9141 and ODBII compliant
Possibility of BUS wake up
S
= 5.5 ... 16 V
A in sleep mode)
Temperature Code
K ( -40ºC to 125ºC )
K-Bus Transceiver with integrated Voltage Regulator
Page 1
A
functions make it possible to develop simple, but
powerful and cheap nodes in K-Bus systems.
The wide output current area and the configurable
reset time and reset voltage works together with
many different microcontrollers.
S
)
Package Code
DF ( SOIC16, 300mil )
Pin Diagram
SOIC16
GND
GND
BUS
VTR
SO
VS
EN
SI
1
2
3
4
5
6
7
8
TH3122
TH3122
16
15
14
13
12
11
10
9
VCC
SENSE
RESET
GND
GND
TxD
RxD
SEN/STA
Dec/04

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th3122 Summary of contents

Page 1

... Load dump protected (40V) Ordering Information Part No. TH3122 General Description The TH3122 consists of a low drop voltage regulator 5V/100mA and a K-Bus transceiver. The transceiver is suitable for K-Bus systems conform to ISO 9141. The combination of voltage regulator and bus transceiver in combination with the monitoring ...

Page 2

... K-Bus Transceiver with integrated Voltage Regulator Functional Diagram VS EN VTR BUS SI 3901003122 Rev 004 Power Supply 7.8V +5V 6.8V Reset-Logic VTR-Logic OSC Wake-up V thH V thL Bus-Logic pnp Control slew rate foldback V THSI_H V THSI_L Figure 1 - Block Diagram Page 2 TH3122 VCC Over Temp SENSE +5V RESET RxD TxD SEN/STA +5V SO Dec/04 ...

Page 3

... K-Bus Transceiver with integrated Voltage Regulator Functional Description The TH3122 consists of a voltage regulator 5V/100mA and a K-Bus transceiver, which is a bi-directional bus interface device for data transfer between K-Bus and the K-Bus protocol controller. RxD VCC TxD ESD VCC SENSE ESD ...

Page 4

... SEN/STA =”1” transmission path is disabled Linear Regulator and Controlling Functions Regulator The TH3122 has an integrated linear regulator with an output voltage of 5V ± and an output current of max. 100mA. The regulator is switched on or off with a signal on the EN pin or wakes up with a BUS signal. ...

Page 5

... BUS driver will be switched off. After T RES2 falls below 140ºC the TH3122 will be initialized, independently of the voltage levels on EN and BUS. The function of the TH3122 is possible between T and the switch off temperature, but small parameter differences can appear. Low Voltage Detection V ...

Page 6

... Short Circuit Proof All in- and outputs are short circuit proof to battery and ground. A thermal shut down circuit prevents VCC and BUS from any damage. Baud Rate The TH3122 has a maximum Baud rate of 9600 Baud > < 25nF, R > 400 ) ...

Page 7

... BUS BUS [4] see over temperature protection 3901003122 Rev 004 any of these limits may do so. Long term exposure to limiting values may affect the reliability of the device. Reliable operation of the TH3122 is only specified within the limits shown in ”Operating conditions”. Symbol Min V 5. ...

Page 8

... OUT -1mA OH OUT V ENL V ENH V ENHYS V > ENH I pdEN V < ENL mA, V > 5.5 V OUT SUP RESET to VCC I pu Page 8 TH3122 Min Typ Max Unit 4.95 5.0 5.05 V 4.90 5.0 5.10 V 4.95 5 100 200 mV 400 mV 600 mV 100 ...

Page 9

... 12V, SENSE = low OUT V BUS V = 12V, SENSE = low OUT I V > 2.5V LIM BUS OUT -1mA OH OUT Page 9 TH3122 Min Typ Max Unit 1.05 1.16 V 1.21 1 0.8 V 0.4 V -500 -375 -250 A 0.15 0. 0.75 0. 160 230 300 ...

Page 10

... VTR t rr dV/dT fall dV/d Trise dV/dT sym t High pulse or low pulse debBUS t debsym pdsym rec t ena t low f OSC t deb t deb t debWake t pdcomp t deb Page 10 TH3122 Min Typ Max Unit 70 100 140 3.0 6 -2.2 -1.6 -1 1.0 1.6 2.2 0 1.5 2.8 4 ...

Page 11

... Analogue Input - definition of reset time und Reset voltage level Ground Ground I/O Bi-directional bus line I Comparator Input, HV-Input O 5V-Comparator Output I/O Send status O Receive Output, 5V-push-pull I 5V-Transmit Input, pull-up-Input Ground Ground O 5V-output reset, active low O 5V-output of VS-Monitoring O Regulator output 5V/100mA Page 11 TH3122 Function Dec/04 ...

Page 12

... All Dimension in inch, coplanarity < 0.004” min 0.398 max 0.413 3901003122 Rev 004 SOIC 16, 300 mil 7.40 10.00 2.35 0.10 7.60 10.65 2.65 0.30 0.291 0.394 0.093 0.004 0.299 0.419 0.104 0.012 Page 12 TH3122 0.33 0.40 0° 1.27 0.51 1.27 8° 0.013 0.016 0° 0.050 0.020 0.050 8° Dec/04 ...

Page 13

... Melexis http://www.melexis.com/html/pdf/MLXleadfree-statement.pdf ESD Precautions Electronic semiconductor products are sensitive to Electro Static Discharge (ESD). Always observe Electro Static Discharge control procedures whenever handling semiconductor products. 3901003122 Rev 004 lead free statement see quality Page 13 TH3122 page at our website: Dec/04 ...

Page 14

... For the latest version of this document our website at: Europe and Japan: E-mail: sales_europe@melexis.com 3901003122 Rev 004 www.melexis.com Or for additional information contact Melexis Direct: All other locations: Phone: + Phone: +1 603 223 2362 E-mail: sales_usa@melexis.com Page 14 TH3122 ISO/TS 16949 and ISO14001 Certified Dec/04 ...

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