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TLE5226G
Smart Quad Channel Low Side Switch
TLE 5226 GSmart Quad Channel Low-Side Switch
Features Product SummaryLow ON-resistance 2 x 0.2 W , 2 x 0.35 W (typ.)Power - SO 20 - Package with integratedcooling areaOverload shutdownSelective thermal shutdownStatus monitoringOvervoltage protectionShorted circuit protectionStandby mode with low current consumptionμC compatible input
Electostatic discharge (ESD) protection
ApplicationAll kinds of resistive and inductive loads (relays,electromagnetic valves)μC compatible power switch for 12 and 24 V applicationsSolenoid control switch in automotive and industrial control systems
General descriptionQuad channel Low-Side-Switch (2x5A/2x3A) in Smart Power Technology (SPT) with four seperate in-
puts and four open drain DMOS output stages. The TLE 5226 is fully protected by embedded protecti-
on functions and designed for automotive and industrial applications.
Pin Description Pin Configuration (Top view)P - DSO - 20 - 10
TLE 5226 GBlock DiagramOUT1
OUT4
ST4
IN4
ST1
IN1
ENA
OUT2
OUT3
GND
ST3
IN3
ST2
IN2
STBY
TLE 5226 GBlock Diagram of Open Load Detection
TLE 5226 GMaximum Ratings for Tj = – 40°C to 150°CTest board for
6 cm2 cooling areamin. footprint
TLE 5226 GElectrical Characteristics
1. Power Supply (VS)
2. Power Outputs
3. Digital Inputs (IN1, IN2, IN3, IN4, ENA)
4. Digital Status Outputs (ST1 - ST4) open Drain Measured on P-DSO-20 devices
TLE 5226 GElectrical Characteristics
5. Standby Input (STBY)
6. Diagnostic FunctionsTable 1:
VDSC is the output voltage of the corresponding channel, paired for open load detection Corresponding outputs
TLE 5226 G Application Description
This IC is especially designed to drive inductive loads (relays, electromagnetic valves).
Integrated clamp-diodes limit the output voltage when inductive loads are discharged.
Four open-drain logic outputs indicate the status of the integrated ciruit. The following conditions are
monitored and signalled:
- overloading of output (also shorted load to supply) in active mode
- open and shorted load to ground in active and inactive mode
- overtemperature
Circuit Description
Input CircuitsThe control and enable inputs, both active high, consist of schmitt triggers with hysteresis. All inputs
are connected with pull-down current sources. Not connected inputs are interpreted as LOW.
In standby mode (STBY = LOW ) the current consumption is greatly reduced. The circuit is active
when STBY = HIGH.
If the standby function is not used, it is allowed to connect the standby pin directly to VS.
Switching StagesThe four power outputs consist of DMOS-power transistors with open drains. The output stages are
shorted loads protected throughout the operating range. Integrated clamp-diodes limit voltage
overshoots produced when inductive loads are demagnetized.
Parallel to the DMOS transistors there are internal pull down resistors. They are provided to detect an
open load condition in the off state. They will be disconnected in the standby mode.
Protective CircuitsThe outputs are protected against current overload and overtemperature.
There is no protection against reverse polarity of the supply voltage.
Error DetectionThe status outputs indicate the switching state under normal conditions (LOW = off; HIGH = on). If an
error occurs, the logic level of the status output is inverted, as listed in the diagnostic table below.
The state of the error detection circuits is directly dependent on the input status.
If current overload or overtemperature occurs, the error condition is stored into an internal register and
the output is shutdown. The reset is done by switching off the corresponding control input.
