BTS3256DXT Infineon Technologies, BTS3256DXT Datasheet - Page 22
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BTS3256DXT
Manufacturer Part Number
BTS3256DXT
Description
Manufacturer
Infineon Technologies
Datasheet
1.BTS3256DXT.pdf
(30 pages)
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