bts3405 Infineon Technologies Corporation, bts3405 Datasheet - Page 4

• Manufacturer Part Number: bts3405
• Description: Smart Low-side Power Switch Hitfet
• Manufacturer: Infineon Technologies Corporation

Protective Functions
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Fault Information
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Applications
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Detailed Description
The device is able to switch all kind of resistive, inductive and capacitive loads, limited by
current capabilities.
The BTS3405G offers ESD protection of each IN Pin in relation to the corresponding Source Pin.
The overtemperature protection is in order to prevent the device from overheating due to overload and/or bad
cooling conditions. The temperature information is given by a temperature sensor in each of the two power
MOSFET. During thermal shutdown the device tries to sink an increased input current at the corresponding IN pin
to feedback the fault condition on this channel.
The BTS3405G has a thermal-auto-restart function, the regarding channel will turn on again after the measured
temperature has dropped for the thermal hysteresis.
The over voltage protection is active during load-dump or inductive turn off conditions. The power MOSFET is
turned on if the Drain-source voltage gets too high. This function is available without supply, means without voltage
on the IN pins.
Data Sheet
Electrostatic discharge protection (ESD)
Active clamp over voltage protection
Thermal shutdown with auto restart
Short circuit protection
Thermal shutdown
Short circuit
Designed for Relays driving in Automotive Applications
All types of resistive, inductive and capacitive loads
Suitable for loads with peak currents
Replaces discrete circuits
4
Smart Low-Side Power Switch
Rev. 1.0, 2007-12-06
E
AS
and maximum
BTS3405G
Overview