E981.18A39FB ELMOS Semiconductor, E981.18A39FB Datasheet - Page 35

• 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
5.9.1
•
•
5.9.2
5.10
The central unit of the diagnosis consists of an analog multiplexer(AMX), which selects a multitude of
absolute and differential measurements within the output stage of the ASIC, a differential amplifier with
the amplification A and an output buffer (AMX). The measured voltages are sent to the analog output
(AMX), which is connected to one of the A/D inputs on the external C. The multiplexer is represented
by the six switches S1, S2, S3 and S4. The block circuitry is shown in Fig. 19.
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
No.
No.
output RREF and the current reference switched to the TxU outputs. Error results from residue
leakage currents of the disabled polarization buffers at the output stages.
1.) ATE tested between 5mA and 30mA
I
I
1 Slew rate (10%-90%) for
2
REF/TxU,LOAD
REF,TxU
Current at Squib resistance
diagnosis
Load regulation error at squib
resistance diagnosis.
Channel error at squib
resistance diagnosis.
I
Slew rate (90%-10%) for
I
REF40mA
REF40mA
V
Squib resistance diagnosis, DC characteristics
Squib resistance diagnosis, AC characteristics
RREF
AMX output and Diagnosis
means maximum current error in percent between the current reference switched to the
,V
activation
deactivation
means maximum current error in percent between in output voltage range
TXU
Description
Description
=[0V..1V]
Table 24: Terminal RREF
V
V
[V
V
V
V
RREF
RREF
U1
U1
U1
RREF
Table 25: I
>8V
>8V
>8V
Condition
Condition
<1V, V
<1V, V
,V
Page 35 of 63
Data Sheet
TxU]
<1V,
U1
U1
REF40mA
>8V I
>8V I
I
I
REFSquib
REFSquib_SR_ON
REFSquib_SR_Off
, AC
I
REF/TxU,LOAD
REF,TxU
Symbol
Symbol
1.)
1.)
Min
Min
-45
-50
-1
0
QM-No.: 25DS0072E.00
Typ
Typ
Max
+1.0
Max
-30
E981.18
0.4
50
mA/µs
mA/µs
Unit
Unit
mA
%
%