View U4793B-MFPG3Y_1119632.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

Features
* * * * * *
10 kV - ESD Protection Two Comparators with Common Reference Tight Threshold Tolerance Constant Threshold NPN Output Interference and Damage-protection According to VDE 0839 and ISO/CD 7637 EMI Protection * Reversal Polarity Protection * Load-dump Protection
Current Monitor IC U4793B
1. Description
The bipolar U4793B is designed to monitor overload or a short circuit in automotive or industrial applications. The threshold is tied to V4,6 = VS - VT where VT = 44.5 mV. It is independent of the supply voltage, VS. If the voltage drop across shunt resistor, Rsh, exceeds this value, the output is turned on, otherwise the output is turned off. Without supply voltage or open input pin 8, the output is turned off. The output breakdown voltage is determined by the Z-diodes Z3 and Z5 with a typical value of VZ = 22V. An unused comparator input must be connected to pin 7.
2. Block Diagram
Figure 2-1. Schematic and Application Circuit
VS 2 R sh Z 2 + 0.6 VS + 8 3 & Z3 1 Load R1 & Z5 7 V Batt
5
OUT1
4 R sh
+ 6
OUT2
150
Rev. 4557B-AUTO-09/05
3. Pin Configuration
Figure 3-1. Pinning DIP8/SO8
GND VS OUT2 IN1 1 2 3 4 8 7 6 5 Input switch VRef IN2 OUT1
Table 3-1.
Pin 1 2 3 4 5 6 7 8
Pin Description
Symbol GND VS OUT2 IN1 OUT1 IN2 VRef Input switch Function Reference point, ground Supply voltage Output 2 Input 1 Output 1 Input 2 Reference voltage Input switch
2
U4793B
4557B-AUTO-09/05
U4793B
4. 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 Supply voltage; pins 2 and 7 Current consumption t = 2 ms, measured at pin 1 (GND), pin 1 Output current, pins 3 and 5 Input voltage reference point pin 7, pins 4 and 6 Power dissipation, Tamb = 125C DIP8 SO8 Tamb = 95C DIP8 SO8 Tamb = 60C DIP8 SO8 Ambient temperature range Storage temperature range Junction temperature Symbol VS Value 16.5 1.5 20 6 220 150 420 360 690 560 -40 to +125 -55 to +125 150 Unit V
I1
I3,5 -V4,6 Ptot
A
mA V mW mW mW mW mW mW C C C
Ptot
Ptot Tamb Tstg Tj
5. Thermal Resistance
Parameters Junction ambient DIP8 SO8 Symbol RthJA RthJA Value 110 160 Unit K/W K/W
6. Electrical Characteristics
VS = 9V to 15V, Tamb = -40C to +125C, unless otherwise specified (see Figure 2-1 on page 1) No. 1 1.1 1.2 1.3 1.4 1.5 Current consumption Parameters Supply Supply voltage Internal Z-diode Z2 VS = 12V measured Tamb = -40C VS = 12V measured Tamb = 25C VS = 12V measured Tamb = 125C 2, 7 2 1 1 1 VS VZ I1 I1 I1 9 20 3.5 2.8 2.0 4.8 3.4 2.6 6.0 6.0 3.2 15 V V mA mA mA A A C A C Test Conditions Pin Symbol Min. Typ. Max. Unit Type*
*) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter
3
4557B-AUTO-09/05
6. Electrical Characteristics (Continued)
VS = 9V to 15V, Tamb = -40C to +125C, unless otherwise specified (see Figure 2-1 on page 1) No. 2 2.1 2.2 3 3.1 3.2 3.3 Temperature coefficient of control signal threshold Input currents Pins connected to 12V Input currents Pins connected to 12V Threshold Switch identification Tamb = -40C Threshold voltage Switch identification Tamb = 25C Switch identification Tamb = 125C Tamb = -40C Tamb = 25C Tamb = 125C Tamb = -40C Tamb = 25C Tamb = 125C 3, 5 8 V8 V8 V8 0.47 x VS 0.47 x VS 0.47 x VS 3 4 5 16 18 30 4 6 7 24 30 50 0.6 VS 0.69 x VS 0.69 x VS 0.69 x VS 6 8 9 32 50 70 V V V C A C Tamb = -40C Tamb = 25C Tamb = 125C Tamb = -40C Tamb = 25C Tamb = 125C 8 4, 6 Control signal threshold Parameters Output Output saturation voltage Output Z-diodes Z3, Z5 Control Signal I3,5 = 1 mA, Figure 6-1 Tamb = -40C I3,5 = 1 mA, Figure 6-1 Tamb = 25C I3,5 = 1 mA, Figure 6-1 Tamb = 125C 4, 6 4, 6 4, 6 -VT -VT -VT TC II II II II II II 100 60 30 5.5 4.0 3.0 5.0 100 42 43 44.5 44 44.5 46 46 46 47.5 mV mV mV C A C VS = 9V, I3,5 = 10 mA Tamb = 25C 3, 5 3, 5 Vsat VZ 21 0.5 V V A A Test Conditions Pin Symbol Min. Typ. Max. Unit Type*
3.4 3.5 3.6 3.7 3.8 3.9 3.10 4 4.1 4.2 4.3 5 5.1 5.2 5.3 5.4 5.5 5.6
15 190 150 110 7.0 5.5 4.5
V/K nA nA nA A A A
C C A C C A C
Switch Delay (RL = 10 k connected from Pin 3 or Pin 5 to VBatt) Delay time Switch-on High to low Delay time Switch-off Low to high td(on) td(on) td(on) td(off) td(off) td(off) s s s s s s C C C C A C
*) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter
4
U4793B
4557B-AUTO-09/05
U4793B
Figure 6-1. Timing Diagram
V4,6 (V) 12.00 11.90
V0 (V) 12 6 0 10 20
t d(off)
t d(on)
30
40
50
60
t (s)
Figure 6-2.
Threshold Voltage = f (VBatt and Temperature)
48 47 46 45
Tamb = 125C 95C 25C -40C
-V T ( mV )
44 43 42 41 40 6.0 7.0 8.0 9.0 10.0 11.0
12.0
13.0
14.0
15.0
16.0
V Batt ( V )
5
4557B-AUTO-09/05
7. Ordering Information
Extended Type Number U4793B-MY U4793B-MFPY U4793B-MFPG3Y Package DIP8 SO8 SO8 Remarks Tube, Pb-free Tube, Pb-free Taped and reeled, Pb-free
8. Package Information
P a c k a g e D IP 8
D im e n s io n s in m m
9 .8 9 .5 1 .6 4 1 .4 4 7 .7 7 7 .4 7
4 .8 m a x 6 .4 m a x 0 .5 m in 0 .5 8 0 .4 8 7 .6 2 8 5 2 .5 4 3 .3 0 .3 6 m a x 9 .8 8 .2
te c h n ic a l d ra w in g s a c c o rd in g to D IN s p e c ific a tio n s
1
4
Package SO8
Dimensions in mm
5.00 4.85 1.4 0.4 1.27 3.81 8 5 0.25 0.10
5.2 4.8 3.7
0.2 3.8 6.15 5.85
technical drawings according to DIN specifications
1
4
6
U4793B
4557B-AUTO-09/05
U4793B
9. Revision History
Please note that the following page numbers referred to in this section refer to the specific revision mentioned, not to this document. Revision No. 4557B-AUTO-09/05 History * Put datasheet in a new template * Pb-free logo on page 1 added * Ordering Information on page 6 changed
7
4557B-AUTO-09/05
Atmel Corporation
2325 Orchard Parkway San Jose, CA 95131, USA Tel: 1(408) 441-0311 Fax: 1(408) 487-2600
Atmel Operations
Memory
2325 Orchard Parkway San Jose, CA 95131, USA Tel: 1(408) 441-0311 Fax: 1(408) 436-4314
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
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
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
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
Asia
Room 1219 Chinachem Golden Plaza 77 Mody Road Tsimshatsui East Kowloon Hong Kong Tel: (852) 2721-9778 Fax: (852) 2722-1369
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
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
Literature Requests
www.atmel.com/literature
Disclaimer: The information in this document is provided in connection with Atmel products. No license, express or implied, by estoppel or otherwise, to any intellectual property right is granted by this document or in connection with the sale of Atmel products. EXCEPT AS SET FORTH IN ATMEL'S TERMS AND CONDITIONS OF SALE LOCATED ON ATMEL'S WEB SITE, ATMEL ASSUMES NO LIABILITY WHATSOEVER AND DISCLAIMS ANY EXPRESS, IMPLIED OR STATUTORY WARRANTY RELATING TO ITS PRODUCTS INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT, CONSEQUENTIAL, PUNITIVE, SPECIAL OR INCIDENTAL DAMAGES (INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OF PROFITS, BUSINESS INTERRUPTION, OR LOSS OF INFORMATION) ARISING OUT OF THE USE OR INABILITY TO USE THIS DOCUMENT, EVEN IF ATMEL HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. Atmel makes no representations or warranties with respect to the accuracy or completeness of the contents of this document and reserves the right to make changes to specifications and product descriptions at any time without notice. Atmel does not make any commitment to update the information contained herein. Unless specifically provided otherwise, Atmel products are not suitable for, and shall not be used in, automotive applications. Atmel's products are not intended, authorized, or warranted for use as components in applications intended to support or sustain life.
(c) Atmel Corporation 2005. All rights reserved. Atmel (R), logo and combinations thereof, Everywhere You Are (R) and others, are registered trademarks or trademarks of Atmel Corporation or its subsidiaries. Other terms and product names may be trademarks of others.
Printed on recycled paper.
4557B-AUTO-09/05

▲Up To Search▲

Price & Availability of U4793B-MFPG3Y

	To Download U4793B-MFPG3Y Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .