E981.18A39FB ELMOS Semiconductor, E981.18A39FB Datasheet - Page 13

• 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
5.1.2
External voltage pin V
V
buffered by a grounded capacitor C
battery. To ensure that all parameters derived directly from the HSD regulation loop, are in the required
operating range, the voltage V
A more detailed description of the global supply monitoring is given in chapter 5.3.
The V
(ATE). To ensure a safe read out of the trimming array after power up in application, the voltage at VA
must exceed the minimum threshold of V
connected between external V
The voltage is visible at the analogue output AMX.
1) Static current consumption of the V
2) For example during a parallel activation of all 8 HSD in LCM/HCM or in TM, the max. total V
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
No.
A
is connected to the energy reserve voltage V
consumption amounts:
I(V
I(V
1 V
2 Minimum V
3 I(VA) without driver activation
4 Additional current I(VA) for
5 Additional current I(VA) for
A
A
A
for correct read out of the
trimming block
each activated High Side Drive
in normal modes (LCM or
HCM)
each activated High Side Drive
in Test Mode (TM)
)
)
pin is also used for the programming of the trimming array during Automatic Test Equipment
MAX_LCM/HCM
MAX_TM
A
Terminal VA, external supply voltage
voltage threshold
Description
A
voltage needed
A
provides the HSD gate charging currents during activation.
= (8x150µA) + 25µA= 1.225mA
= (8x220µA) + 25µA= 1.785mA
Table 7: Terminal VA, external supply voltage
A
5
must exceed a minimum threshold V
and V
VA
A
to sustain minimum voltage level for a crash event after loss of
A
4.5V<V
V
4.5V<V
V
8V<V
4.5V<V
V
4.5V<V
V
-voltage divider and the V
pins. The principle is shown in the block circuitry in Fig. 3.
A
A
A
A
A,READ_TRM,EN.
: 0V → V
: 0V → V
> [V(TxU)+8V]
> [V(TxU)+8V]
Condition
A
Page 13 of 63
<35V
5
5
5
5
Data Sheet
<5.5V;
<5.5V,
<5.5V,
<5.5V,
ER
of the application by a diode. The pin must be
A,max
A,max
. To speed up this, there is a forward diode
V
V
I
I
I
VA,DRV_off
VA,DRV_on,NM
VA,DRV_on,TM
A_EN
A,READ_TRM,EN
Symbol
A
1.)
-Monitoring
2.)
2.)
A_EN
.
3.30
Min
10
QM-No.: 25DS0072E.00
Typ
Max
3.85
150
220
E981.18
12
25
A
current
Unit
µA
µA
µA
V
V