BTS3408GXT Infineon Technologies, BTS3408GXT Datasheet - Page 5

• Manufacturer Part Number: BTS3408GXT
• Manufacturer: Infineon Technologies

Specifications of BTS3408GXT

• Switch Type: Low Side
• Power Switch Family: BTS3408G
• Input Voltage: -0.3 to 7V
• Power Switch On Resistance: 550mOhm
• Output Current: 550mA
• Number Of Outputs: Dual
• Mounting: Surface Mount
• Supply Current: 1.5mA
• Package Type: DSO
• Operating Temperature (min): -40C
• Operating Temperature (max): 150C
• Operating Temperature Classification: Automotive
• Pin Count: 8
• Power Dissipation: 880mW
• Lead Free Status / RoHS Status: Compliant

Power stages
Each output is protected by embedded protection functions. In the event of an overload
or short to supply, the current is internally limited. The current limit is set to I
operation leads to an overtemperature condition, a second protection level (about 165
°C) will turn the effected output into a PWM-mode (selective thermal shutdown with
restart) to prevent critical chip temperatures. The temperature hysteresis is typically 10K.
Zener clamping is implemented to limit voltages at the power transistors when inductive
loads are switched off.
Diagnostic
The general FAULT pin is an open drain output. The FAULT pin is low active. It signals
fault conditions of any of the two output stages. By doing so, single and/or dual fault
conditions can be monitored. Single fault conditions can be assigned.
Table 2
Operating Condition
Standby
Normal function
Over temperature
Open load / short to ground
1)
2)
Fault Distinction
Open load / short to ground is recognized during OFF-state. Overtemperature as a result
of an overload or short to battery can only arise during ON-state. If there is only one fault
at a time, it is possible to distinguish which channel is affected with which fault.
.
Datasheet Rev. 1.3
X = not relevant
selective thermal shutdown for each channel at overtemperature
Diagnostic Table
5
ENA
L
H
H
H
IN
X
H
H
L
1)
X
HITFET
OUT
OFF
ON
OFF
OFF
X
2)

BTS3408G
D(lim)
2008-01-09
FAULT
H
H
L
L
. If this