tle4226 Infineon Technologies Corporation, tle4226 Datasheet - Page 4

• Manufacturer Part Number: tle4226
• Description: Intelligent Sixfold Low-side Switch
• Manufacturer: Infineon Technologies Corporation

Data Sheet
Application Description
Applications in automotive electronics call for intelligent power switches that can be activated by
logic signals, which have to be shorted load protected and which provide error feedback.
This IC contains six power switches connected to ground (low-side switches). On inductive loads
the integrated Z-diodes clamp the discharging voltage.
By means of TTL signals on the control inputs (active high) all six switches can be activated
independently of one another when a high level appears on the preferred-state input. When there
is a low level on the preferred-state input, switches 1 to 4 are switched on, switches 5 and 6 are
switched off regardless of the control-input levels. The inputs are highly resistive and therefore must
not be left unconnected but should always be on fixed potential (noise immunity). Inputs that are not
used, should be connected to low level to reduce the power consumption.
The analog status output signals the following errors by analog voltage levels:
The following levels signal errors at the analog and digital status outputs.
Errors
Normal function
Overload
Openload or shorted load to ground (only switches 5 and 6)
Thermal overload
Possible Input and Output Levels
Supply Voltage
2 to 5 V
5 V
5 V
– Overload
– Thermal overload
– Openload or shorted load to ground (only switches 5 and 6)
V
S
PREFST
Low
High
High
IN1-6
Random
Low
High
4
Q1-Q4
Low
High
Low
Analog Status
Low
1.0 V to 3.3 V
1.0 V to 1.7 V
> 3.5 V
Q5, Q6
High
High
Low
Digital Status
High
Low
Low
Low
TLE 4226 G
2002-10-21