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U6813B-MFPG3

Description
Fail-safe IC with High-side and Relay Driver
CategoryPower/power management    The power supply circuit   
File Size155KB,15 Pages
ManufacturerAtmel (Microchip)
Download Datasheet Parametric View All

U6813B-MFPG3 Overview

Fail-safe IC with High-side and Relay Driver

U6813B-MFPG3 Parametric

Parameter NameAttribute value
Is it Rohs certified?incompatible
MakerAtmel (Microchip)
Parts packaging codeSOIC
package instructionSOP, SOP16,.25
Contacts16
Reach Compliance Codeunknow
ECCN codeEAR99
Adjustable thresholdNO
Analog Integrated Circuits - Other TypesPOWER SUPPLY MANAGEMENT CIRCUIT
JESD-30 codeR-PDSO-G16
JESD-609 codee0
length9.925 mm
Humidity sensitivity level1
Number of channels2
Number of functions1
Number of terminals16
Maximum operating temperature125 °C
Minimum operating temperature-40 °C
Package body materialPLASTIC/EPOXY
encapsulated codeSOP
Encapsulate equivalent codeSOP16,.25
Package shapeRECTANGULAR
Package formSMALL OUTLINE
Peak Reflow Temperature (Celsius)NOT SPECIFIED
power supply5 V
Certification statusNot Qualified
Maximum supply current (Isup)15 mA
Maximum supply voltage (Vsup)5.5 V
Minimum supply voltage (Vsup)4.5 V
Nominal supply voltage (Vsup)5 V
surface mountYES
technologyBIPOLAR
Temperature levelAUTOMOTIVE
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formGULL WING
Terminal pitch1.27 mm
Terminal locationDUAL
Maximum time at peak reflow temperatureNOT SPECIFIED
width3.8 mm
Features
Digital Self-supervising Watchdog with Hysteresis
One 150-mA Output Driver for Relay
One High-side Driver for N-channel Power FET
Positive and Negative Enable Output
Positive and Negative Reset Output
Over/Under-voltage Detection
Relay and Power FET Outputs Protected Against Standard Transients and 55-V Load
Dump
Description
The function of microcontrollers in safety-critical applications (e.g., anti-lock systems)
needs to be monitored permanently. Usually, this task is accomplished by an indepen-
dent watchdog timer. The monolithic IC U6813B, designed in bipolar technology and
qualified according to the needs of the automotive industry, includes such a watchdog
timer and provides additional features for added value. With the help of integrated
driver stages, it is easy to control safety-related functions of a relay and of an N-chan-
nel power MOSFET in high-side applications. In case of a microcontroller malfunction
or supply-voltage anomalies, the U6813B provides positive and negative reset and
enable output signals. This flexibility guarantees a broad range of applications. The
U6813B is based on of Atmel’s fail-safe ICs U6808B and U6809B.
Figure 1.
Block Diagram
Fail-safe IC with
High-side and
Relay Driver
U6813B
V
CC
Bandgap
reference
2.44 V
Power-on
reset
Reset
delay
fosc
3
P-RES
3.3 V
16
Reset
debounce
fosc
3.3-V under- and
overvoltage detect.
4
N-RES
1
V
CC
14
RELO
Current
limitation
V
CC
5-V under- and
overvoltage detect.
6
N-EN
RELI
13
19k
FETI
12
19k
Watchdog
WDI
11
19k
Internal
oscillator
fosc
RC-
oscillator
supervisor
V
CC
5
P-EN
9
RC
oscillator
FET
output
7
FETO
V
S
15
SGND
2
GND
10
WDC
8
CAPI
Rev. 4543A–AUTO–05/02
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