A‘|_mEL®
A1—lnEL
Rev. 4762A–AUTO–11/03
Features
•Three Input Comparators with Schmitt-trigger Characteristic
•Input Clamping Current Capability of ±10 mA
•Integrated Protection Cells (EMC, ESD, RF) Dedicated to all Input Stages
•Common Shutdown by Junction-temperature Monitor
•Reset with Hysteresis at Low Voltage
•ESD Protection Acording to Human Body Model:
±2000 V (C = 100 pF, R = 1.5 kΩ)
•Output Stages:
– Short-circuit Protected
– Load-dump Protected at 1 kΩ
– No Crosstalk on Adjacent Channels
– Jump Start Possible
Description
The triple driver IC includes three non-inverted and current-limited output stages with
an open collector. Common thermal shutdown protects the outputs against critical
junction temperatures. Each output can sink a current of 20 mA, parallel output opera-
tion is possible. The digital inputs have Schmitt-trigger function with pull-up resistors to
5 V.
Figure 1. Block Diagram
Under-
voltage
detection VS = 5 V
7
1 3 4
856
2
VS
VI3
GND
Thermal
shutdown
VI2
VI1
VS
VO1 VO2 VO3
Triple Driver IC
with Thermal
Monitoring
U6803B
_|__|__|__|_
41m
_L_l__l__|_
2U6803B
4762A–AUTO–11/03
Pin Configuration
Figure 2. Pinning SO8
1
2
3
4
8
7
6
5
VO1
GND
VO2
VO3
VI1
VS
VI2
VI3
Pin Description
Pin Symbol Function
1 VO1 Output 1
2 GND Ground
3 VO2 Output 2
4 VO3 Output 3
5 VI3 Input 3
6 VI2 Input 2
7 VS Supply voltage 5 V
8 VI1 Input 1
41m
3
U6803B
4762A–AUTO–11/03
Basic Circuitry
The integrated circuit U6803B requires a stabilized supply voltage (VS = 5 V ±5%) to
comply with its electrical characteristics. An external buffer capacitor of C = 100 nF is
recommended. An integrated 14 V Zener diode between VS and ground protects the
supply pin.
All input stages are provided with an integrated 250 kW pull-up resistor and can be
directly connected to a microcontroller.
All output stages are open collectors, each capable of sinking 20 mA. Recommended
external components:
• Pull-up resistor, R = 1 kW
• Capacitor to GND, C = 470 pF, see Figure 3 on page 4
Functional Description
General ON state: A low level at the input stage activates the corresponding output stage.
OFF state: The internal pull-up resistor provides a high level to the input comparator and
deactivates the output stage.
7 V Zener diodes between each input pin and GND are capable of ±10 mA clamping
currents without crosstalk on adjacent input stages.
A total clamping current of ±30 mA should be observed with respect to the power
dissipation.
Current Limitation of the
Output Stages and
Overtemperature
Shutdown
A temperature-dependent current limitation in the range of 25 to 100 mA protects the
stages in case of a short. Additionally, the chip temperature is monitored. For
TChip > 148°C, all outputs are disabled and automatically enabled with a hysteresis of
TChip >5°C.
Transients and Load
Dump
An integrated 28 V Zener diode protects each output stage against transients and load-
dump (Schaffner pulses). With the help of an external 1 kW resistor, the output transistor
is capable of handling the corresponding current which flows during each of these condi-
tions. Apart from that, the outputs are short-circuit and overload protected.
Low-voltage Detection When the supply voltage is switched on, a power-on reset pulse is generated internally
which disables all output stages until a defined supply-voltage level is reached. The
low-voltage detection is provided with a hysteresis of Vhyst = 0.5 V typically.
41m
4U6803B
4762A–AUTO–11/03
Figure 3. Application Schematic
VS = 5 V
VI3
U6803B
C C C
RRR
VBatt
3 × 470 pF
Load
100 nF
Micro-
controller
VI2
VI1
VO3
VO2
VO1 3 × 1 kΩ
Absolute Maximum Ratings
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating
only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this
specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
Parameters Symbol Value Unit
Supply voltage VS7.0 V
Ambient temperature range Tamb -40 to +125 °C
Storage temperature range Tstg -50 to +150 °C
Maximum junction temperature Tj+150 °C
Thermal Resistance
Parameters Symbol Value Unit
Junction ambient RthJA 160 K/W
41m
5
U6803B
4762A–AUTO–11/03
Electrical Characteristics
VS = 5 V ±5%, Tamb = 27°C, reference point pin 2 (GND), unless otherwise specified, see Figure 1 on page 1 and
Figure 3 on page 4
Parameters Test Conditions Symbol Min. Typ. Max. Unit
Supply, Pin 7
Supply voltage VS4.75 5.25 V
Supply current Inputs open
Inputs closed to GND
IS
IS
0.8
7
3.2
13
mA
mA
Low-voltage detection threshold ON
OFF
VTH(ON)
VTH(OFF)
3.7
3.0
4.6
3.8
V
V
Low-voltage hysteresis Vhyst 0.55 1.05 V
Temperature shutdown TChip 140 149 °C
Temperature shutdown hysteresis Thyst 5°C
Input; Pins 5, 6, 8
Zener-diode protection voltage II = 10 mA VI6.7 8.5 V
Zener-diode clamping current II±10 mA
Pull-up resistor RI170 250 305 kW
Switching threshold OFF
ON
VI
VI
3.3
1.8
V
V
Hysteresis Vhyst 1.5 V
Output; Pins 1, 3, 4
Zener-diode protection voltage IO = 10 mA VO26.5 V
Integrated capacitor 5pF
Leakage current ILeak 2.5 µA
Saturation voltage (IO = 20 mA) VSat 0.7 V
Current limitation Ilimit 25 100 mA
Propagation delay (470 pF, 1 kW, 20 V) td5µs
41m
6U6803B
4762A–AUTO–11/03
Package Information
Ordering Information
Extended Type Number Package Remarks
U6803B-MFP SO8 Tube
U6803B-MFPG3 SO8 Taped and reeled
technical drawings
according to DIN
specifications
Package SO8
Dimensions in mm 5.00
4.85
0.4
1.27
3.81
1.4
0.25
0.10
5.2
4.8
3.7
3.8
6.15
5.85
0.2
85
14
.11_mEL®
Printed on recycled paper.
Disclaimer: Atmel Corporation makes no warranty for the use of its products, other than those expressly contained in the Company’s standard
warranty which is detailed in Atmel’s Terms and Conditions located on the Company’s web site. The Company assumes no responsibility for any
errors which may appear in this document, reserves the right to change devices or specifications detailed herein at any time without notice, and
does not make any commitment to update the information contained herein. No licenses to patents or other intellectual property of Atmel are
granted by the Company in connection with the sale of Atmel products, expressly or by implication. Atmel’s products are not authorized for use
as critical components in life support devices or systems.
Atmel Corporation Atmel Operations
2325 Orchard Parkway
San Jose, CA 95131, USA
Tel: 1(408) 441-0311
Fax: 1(408) 487-2600
Regional Headquarters
Europe
Atmel Sarl
Route des Arsenaux 41
Case Postale 80
CH-1705 Fribourg
Switzerland
Tel: (41) 26-426-5555
Fax: (41) 26-426-5500
Asia
Room 1219
Chinachem Golden Plaza
77 Mody Road Tsimshatsui
East Kowloon
Hong Kong
Tel: (852) 2721-9778
Fax: (852) 2722-1369
Japan
9F, Tonetsu Shinkawa Bldg.
1-24-8 Shinkawa
Chuo-ku, Tokyo 104-0033
Japan
Tel: (81) 3-3523-3551
Fax: (81) 3-3523-7581
Memory
2325 Orchard Parkway
San Jose, CA 95131, USA
Tel: 1(408) 441-0311
Fax: 1(408) 436-4314
Microcontrollers
2325 Orchard Parkway
San Jose, CA 95131, USA
Tel: 1(408) 441-0311
Fax: 1(408) 436-4314
La Chantrerie
BP 70602
44306 Nantes Cedex 3, France
Tel: (33) 2-40-18-18-18
Fax: (33) 2-40-18-19-60
ASIC/ASSP/Smart Cards
Zone Industrielle
13106 Rousset Cedex, France
Tel: (33) 4-42-53-60-00
Fax: (33) 4-42-53-60-01
1150 East Cheyenne Mtn. Blvd.
Colorado Springs, CO 80906, USA
Tel: 1(719) 576-3300
Fax: 1(719) 540-1759
Scottish Enterprise Technology Park
Maxwell Building
East Kilbride G75 0QR, Scotland
Tel: (44) 1355-803-000
Fax: (44) 1355-242-743
RF/Automotive
Theresienstrasse 2
Postfach 3535
74025 Heilbronn, Germany
Tel: (49) 71-31-67-0
Fax: (49) 71-31-67-2340
1150 East Cheyenne Mtn. Blvd.
Colorado Springs, CO 80906, USA
Tel: 1(719) 576-3300
Fax: 1(719) 540-1759
Biometrics/Imaging/Hi-Rel MPU/
High Speed Converters/RF Datacom
Avenue de Rochepleine
BP 123
38521 Saint-Egreve Cedex, France
Tel: (33) 4-76-58-30-00
Fax: (33) 4-76-58-34-80
Literature Requests
www.atmel.com/literature
4762A–AUTO–11/03
© Atmel Corporation 2003. All rights reserved.
Atmel® and combinations thereof are the registered trademarks of Atmel Corporation or its subsidiaries.
Other terms and product names may be the trademarks of others.
Products related to this Datasheet
IC DRIVER TRPL THERMAL MON 8SOIC
IC DRIVER TRPL THERMAL MON 8SOIC