BTS3256DXT Infineon Technologies, BTS3256DXT Datasheet - Page 22

• Manufacturer Part Number: BTS3256DXT
• Manufacturer: Infineon Technologies

Specifications of BTS3256DXT

• Switch Type: Low Side
• Input Voltage: -0.3 to 5.5V
• Power Switch On Resistance: 10mOhm
• Number Of Outputs: Single
• Mounting: Surface Mount
• Supply Current: 3(Max)mA
• Package Type: TO-252
• Operating Temperature (min): -40C
• Operating Temperature (max): 150C
• Operating Temperature Classification: Automotive
• Pin Count: 4 +Tab
• Lead Free Status / RoHS Status: Compliant

8
The device provides embedded protection functions against over temperature, over load and short circuit.
Note: Integrated protection functions are designed to prevent IC destruction under fault conditions described in the
8.1
The device is protected against over temperature resulting from overload and / or bad cooling conditions.
The BTS 3256D has a thermal restart function. When overheating occurs, the device switches off for the restart
delay time t
level. The fault feedback is activated during over temperature situation. See
The diagram naming refers to
Figure 16
8.2
The BTS 3256D is equipped with a voltage clamp mechanism that keeps the Drain-Source voltage V
level. This stage is also used for inductive clamping.
See
Datasheet
“Inductive Output Clamp” on Page 14
data sheet. Fault conditions are considered as “outside” normal operation.
High
Low
T
I
I
high
low
INfault
INnom
J SD
V
IN
I
0
DI
T
IN
restart
J
Protection Functions
Thermal Protection
Status Feedback via Input Current at Over temperature
Over Voltage Protection
. After this time the device restarts if the temperature is below threshold and the IN has logic high
T
JSD
Figure
14.
for details.
Thermal shutdown
22
Don’t care
t
restart
After delay time , IN is high
Over temperature is gone
Smart Low Side Power Switch
Figure 16
thermal _ fault_autorestart.emf
HITFET - BTS 3256D
for the restart behavior.
Protection Functions
Rev. 1.0, 2009-05-05
t
t
t
t
D
at a certain