TLE7231GXT Infineon Technologies, TLE7231GXT Datasheet - Page 13

• Manufacturer Part Number: TLE7231GXT
• Manufacturer: Infineon Technologies

Specifications of TLE7231GXT

• Switch Type: Low Side
• Power Switch Family: TLE7231G
• Input Voltage: -0.3 to 5.5V
• Power Switch On Resistance: 1Ohm
• Output Current: 320mA
• Number Of Outputs: 4
• Mounting: Surface Mount
• Supply Current: 5mA
• Package Type: DSO
• Operating Temperature (min): -40C
• Operating Temperature (max): 150C
• Operating Temperature Classification: Automotive
• Pin Count: 24
• Lead Free Status / RoHS Status: Compliant

Figure 5
Maximum Load Inductance
During demagnetization of inductive loads, energy has to be dissipated in the TLE7231G.
This energy can be calculated with following equation:
Following equation simplifies under the assumption of R
The maximum energy, which is converted into heat, is limited by the thermal design of the component.
6.3
The power transistors are switched on and off with a dedicated slope via the IN bits of the serial peripheral
interface SPI. The switching times t
Figure 6
In input mode, a high signal at the input pin is equivalent to a SPI ON command and a low signal to SPI OFF
command respectively. Please refer to
The listed switching times are not valid, when switching to or from stand-by mode.
Datasheet
E
E
=
=
V
1
-- -
2
LI
DS(CL)
L
2



1
Output Clamp Implementation
Timing Diagrams
Switching a Resistive Load
V
----------------------------------- - ln 1
–
bat
----------------------------------- -
V
bat
80%
20%
–
V
CS
R
DS
V
–
V
L
DS(CL)
V
bat
DS(CL)
V
SPI: ON
bat






–
----------------------------------- -
V
t
ON
bat
ON
R
–
and t
L
Section 9.3
V
V
DS(CL)
DS(CL)
I
L
OFF



are designed equally.
+
I
L
for details on operation modes.
------
R
13
L
L
L
= 0:
GND
SPI Driver for Enhanced Relay Control
OUT
SPI: OFF
V
DS
I
D
t
OFF
L,
R
L
t
t
SPIDER - TLE7231G
Rev. 1.0, 2008-02-28
SwitchOn.emf
OutputClamp .emf
Power Stages