E981.18A39FB ELMOS Semiconductor, E981.18A39FB Datasheet - Page 24

• Manufacturer Part Number: E981.18A39FB
• Description: Motor / Motion / Ignition Controllers & Drivers 8ch squib driver
• Manufacturer: ELMOS Semiconductor
• Type: Airbag Squib Driverr

Specifications of E981.18A39FB

• Rohs: yes
• Product: Electromechanical Drivers
• Operating Supply Voltage: 5 V
• Supply Current: 4.3 mA
• Operating Temperature: - 40 C to + 95 C
• Mounting Style: SMD/SMT
• Package / Case: QFN-44
• Number Of Outputs: 8
• Power Dissipation: 3.2 W

8-Channel Airbag Squib Driver
PRELIMINARY INFORMATION - AUG 01, 2011
5.5
•
UNLOCK:
Unlock command starts the codelock timer to enable the activated high and low side
drivers. When the codelock timeout is reached after T
disabled. Additional UNLOCK commands during T
LOCK:
Lock command closes the codelock via SPI and disables the high side and low side drivers.
To close the codelock before the timeout, the command CODELOCK LOCK can be used.
On each rising or falling edge of Unlock_Out signal the following initialization is done:
•
•
5.5.1
5.6
“ARMING” sensor signal, high active.
The codelock enable line is masked by the external input „ARM“ according to the following rules:
•
•
In positive logic it exists a logical AND between the enable and the arm line. For safety reasons the
required pulldown at the ARM input is built up with a resistance.
5.6.1
This document contains information on a pre-production product. ELMOS Semiconductor AG reserves the right to change specifications and information herein without notice.
ELMOS Semiconductor AG
1
2
3
1)
No.
No.
tested by ATPG scan test during ELMOS production test.
Internal TIMER to enable HSD and LSD for the T
A Reset pulse is generated for T
Reset of most of the SPI registers (see SPI CMD-List in chapter 5.14 for more details)
ARM = logic 1
ARM = logic 0
1 Fire codelock Timeout
2 Codelock reset pulse length
Input Low voltage
Input High voltage
Internal pull down resistor
CODELOCK
Terminal ARM
CODELOCK, Dynamic Characteristics
ARM, DC characteristics
Description
Description
enable line unaffected
enable line masked (driver disabled)
res_cdl
Table 22: Terminal ARM, DC
Table 21: CODELOCK, AC
4.5V<V
4.5V<V
4.5V<V
Condition
Condition
Page 24 of 63
5
5
5
Data Sheet
<5.5V
<5.5V
<5.5V;
timeout
TIMEOUT
T
timeout
T
TIMEOUT
Symbol
are extending T
RES_cdl
V
V
R
duration.
, the low side and high side drivers are
Di,L
Di,L
PD_ARM
Symbol
1)
1)
ARM
ARM
Min
150
timeout
Min
0.8
30
by resetting the timer.
(1/F
-
Typ
250
OSC_nom
QM-No.: 25DS0072E.00
Typ
)*2
50
-
-
Max
250
Max
E981.18
70
2
-
Unit
Unit
ms
k
ns
V
V