BTS5481SF Infineon Technologies, BTS5481SF Datasheet - Page 16

• Manufacturer Part Number: BTS5481SF
• Manufacturer: Infineon Technologies

Specifications of BTS5481SF

• Packages: PG-DSO-36
• Channels: 4.0
• Channel Mix: 2*4,5mohm+2*11mohm
• Led Mode: Yes
• Cranking Mode: No
• Pwm Engine Integrated: No

6
The high-side power stages are built by N-channel vertical power MOSFETs (DMOS) with charge pumps. There
are four channels implemented in the device. Channels can be switched on via an input pin (please refer to
Section
6.1
The on-state resistance
Figure 4
Figure 4
6.2
The outputs of the SPOC - BTS5481SF can be activated either via the SPI register OUTL.OUTn or via the
dedicated input pins. There are two different ways to use the input pins, the direct drive mode and the assigned
drive mode. The default setting is the direct drive mode. To activate the assigned drive mode the register bit
ICR.INCG needs to be set.
Additionally, there are two ways of using the input pins in combination with the OUTL register by programming the
ICR.COL parameter.
•
•
Data Sheet
ICR.COL = 0
ICR.COL = 1
In this configuration, a PWM signal can be applied to the input pin and the channel is activated by the SPI
register OUTL.
6.2) or via SPI register OUTL.
shows those dependencies. The behavior in reverse polarity mode is described in
50
45
40
35
30
25
20
15
10
5
0
-50
Power Stages
Output ON-State Resistance
Typical On-State Resistance
Input Circuit
Channel 0,1 (bulb)
Channel 2,3 (bulb)
Channel 2,3 (LED)
b
b
: A channel is switched on by the according OUTL register bit only, when the input pin is high.
: A channel is switched on either by the according OUTL register bit or the input pin.
0
R
DS(ON)
V
S
T
= 13.5 V
j
50
[°C]
depends on the supply voltage
100
150
16
50
45
40
35
30
25
20
15
10
5
0
0
V
S
as well as on the junction temperature
5
10
T
j
= 25 °C
V
S
[V]
15
SPOC - BTS5481SF
20
Rev. 1.0, 2011-11-17
Section
Channel 0, 1 (bulb)
channel 2,3 (bulb)
channel 2,3 (LED)
25
Power Stages
7.5.
30
T
j
.