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Intelligent Sixfold Low-Side Switch
TLE 4226 G
Bipolar-IC
Features
q q q q q q q q q q q
Quad 50 mA outputs Dual 500 mA outputs Operating range VS = 5 V 5 % Output stages with power limiting Open-collector outputs Shorted load protected within operating range Clamp-diodes to ground Status signaling TTL-compatible control inputs Overtemperature monitoring Temperature range - 40 to 125 C
P-DSO-24-3
Type w TLE 4226 G w New type
Ordering Code Q67000-A9118
Package P-DSO-24-3 (SMD)
TLE 4226 G is an integrated, sixfold low-side power switch with power limiting of the 0.5 A outputs, shorted-load protection of the 50 mA switches and Z-diodes on all switches from output to ground. TLE 4226 G is particularly suitable for automotive and industrial applications.
Semiconductor Group
1
07.96
TLE 4226 G
Pin Configuration (top view)
Pin Definitions and Functions Pin 1 2 3 4 5, 6, 7, 8 9 10 11 12 13 14 15 16 17, 18, 19, 20 21 22 23 24 Symbol IN1 IN2 IN3 IN4 GND IN5 IN6 StA StD Function Input switch 1, active high (50 mA) Input switch 2, active high (50 mA) Input switch 3, active high (50 mA) Input switch 4, active high (50 mA) Ground, cooling Input switch 5, active high (500 mA) Input switch 6, active high (500 mA) Status output analog Status output digital (error = low) Supply voltage Preferred state input, active low Output switch 6 (500 mA) Output switch 5 (500 mA) Ground, cooling Output switch 4 (50 mA) Output switch 3 (50 mA) Output switch 2 (50 mA) Output switch 1 (50 mA)
VS
PREFST Q6 Q5 GND Q4 Q3 Q2 Q1
Semiconductor Group
2
TLE 4226 G
Block Diagram
Semiconductor Group
3
TLE 4226 G
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: - Overload - Thermal overload - Openload or shorted load to ground (only switches 5 and 6) The following levels signal errors at the analog and digital status outputs. Errors Normal function Analog Status Low Digital Status High Low Low Low
Overload 1.0 V to 3.3 V Openload or shorted load to ground (only switches 5 and 6) 1.0 V to 1.7 V Thermal overload > 3.5 V
Possible Input and Output Levels Supply Voltage VS 2 to 5 V 5V 5V PREFST Low High High IN1-6 Random Low High Q1-Q4 Low High Low Q5, Q6 High High Low
Semiconductor Group
4
TLE 4226 G
Circuit Description Input Circuits The control inputs and the preferred-state input consist of TTL-compatible Schmitt triggers with hysteresis. Driven by these stages the buffer amplifiers convert the logic signal necessary for driving the NPN power transistors. Switching Stages The output stages consist of NPN power transistors with open collectors. Each stage has its own protective circuit for limiting power dissipation and shorted load current, which makes the outputs shorted load protected to the supply voltage throughout the operating range. Integrated clampdiodes limit positive voltage spikes that occur when inductive loads are discharged. Output currents, caused through negative voltages at the outputs, are compensated up to 50 mA for all outputs in total. Monitoring and Protective Functions Each output is monitored (for overload) in its activated status. For the switches 1 to 4 overload is detected, if the switches are activated and the output voltage at the transistor is higher than 4.1 V for more than 10 s. The concerned output will be shutdown and both status outputs will be set. The switch can only be activated again if the corresponding input is switched off and then on again. If the output voltage does not exide 4.1 V, the output is not shutdown and the status outputs are not set, although an overload may occur. The switches 5 and 6 are protected through a SOA-circuit. It is suppressed for at least 10 s when the switch is turned on before it can start limiting the overload current. The status outputs also monitor openload or shorted load to ground at the switches 5 and 6 in deactivated mode. An analog signal is applied to the analog status output only when protection function is active. If several malfunctions appear coincident, the highest voltage level of the analog status output will dominate. Simultaniously the digital status output will be set. The IC is also protected against thermal overload. If a chip temperature of typically 155 C is attained, the status outputs monitor overtemperature. If the temperature continues to increase, the inputs and outputs of the switches 5 and 6 are shutdown. The switches 1 to 4 will not shutdown, so precaution has to be taken in the application to prevent a further increase of the chiptemperature, which may destroy the IC. After cooling down below 140 C the overtemperature monitoring will be reseted and the outputs of the switches 5 and 6 can be activated again. If the minimum supply voltage for operation is not maintained, the outputs are deactivated. At a supply voltage of higher than 1.8 V, the outputs 1 to 4 are switched on, if pin 14 (PREFST) is connected to ground over a resistance smaller 1 M. The outputs 1 to 4 can be controlled via the inputs, if pin 14 (PREFST) is switched to high or not connected. Characteristics may be beyond the specified values. Full function is guaranteed in the supply voltage range of 5 V 5 %.
Semiconductor Group
5
TLE 4226 G
Absolute Maximum Ratings Tj = - 40 to 150 C Parameter Symbol Limit Values min. Voltages Supply voltage Supply voltage load circuit Input voltage Currents Output current Current at reverse poling Current at reverse poling Clamping current Clamping current Junction temperature max. Unit Remarks
VS VQ1-6 VIN1-6 , VPREFST
-1 - 0.7 - 0.7
10 25 20
V V V
IQ1-6 IQ5-6 IQ1-4 IQZ5-6 IQZ1-4 Tj Tstg
- 500 - 50 700 70 - 40 150 mA mA mA mA C
limited internally
see diagram Overtemperature protection shuts down the switches 5 and 6 at 165 C
Storage temperature Operating Range Supply voltage
- 55
125
C
VS VS
4.75 4
5.25
V full function, but status outputs cannot be evaluated
Output voltage Ambient temperature Invert current for Q1-6 in total Input voltage Thermal resistance junction to case junction to ambient
VQ TA Isup VIN Rth JC Rth JA
- 0.3 - 40 50 - 0.5
24 110 15 15 65
V C mA V K/W K/W
1)
Tj 150 C
1) Pins 5 to 8 and 17 to 20 have to be connected to the ground-plane used as thermal heatsink to achieve the optimum thermal resistance.
Semiconductor Group
6
TLE 4226 G
Characteristics VS = 5 V, unless stated otherwise; Tj = - 40 to 140 C Parameter Symbol min. Supply Voltage (VS) Quiescent current Supply Current Limit Values typ. max. Unit Test Condition
IS IS
8 50
11 65
mA mA
Outputs OFF Outputs ON
Inputs (IN1-6, PREFST) H-input voltage L-input voltage Hysteresis H-Input current L-Input current Input current Power Outputs (Q1-6) Load Current Saturation voltage Saturation voltage Saturation voltage Compare voltage Turn-ON delay time Turn-OFF delay time
VIH VIL IIH IIL II
VI
1.3 0.9 0.3 -2 - 10 -2
1.8 1.2 0.6
2.1 1.5 1.0 3 1 3
V V V A A A
0.9 V < VI < 6 V 0.2 V < VI < 0.9 V 0 V < VI < 6 V; VS = 0 V
IQ1-4 VQSat5, 6 VQSat1-4 VQSat1-4 Vcom tDON tDOFF
50 0.5 0.4 4.1 0.2 0.2 0.8 0.6 0.22 4.7 1.5 3.5
mA V V V V s s
VS = 2 V and resistance from
PREFST to ground < 1 M IQ = 0.4 A; output ON IQ = 50 mA; output ON IQ = 20 mA; output ON see diagrams 20 mA < IQ1-4 < 50 mA, 200 mA < IQ5,6 < 500 mA
1 2
Overtemp. Protection Monitoring threshold Shutdown threshold hysteresis Reset threshold
TthSt Ttho TthRes
150 5
155 10
C K
only switches 5 and 6 are shut down
140
150
C
after shutdown
Semiconductor Group
7
TLE 4226 G
Characteristics (cont'd) VS = 5 V, unless stated otherwise; Tj = - 40 to 140 C Parameter Symbol min. Outputs (Q1-6) Clamping voltage Clamping voltage Shorted load current Shorted load current Sink current Shutdown threshold Leakage current Leakage current Limit Values typ. max. Unit Test Condition
VQ1-4 VQ5, 6 IQ1-4 max IQ5, 6 IQ5, 6 IQ1-4 IQ5, 6
25.5 25.5 60 500 2
33 35 170 900 10 1 200
V V mA mA A A A
IQ = 50 mA IQ = 500 mA VQ < 16.5 V VQ 10 V; Tj 130 C VQ = 5 V
switches off, VQ = 24 V Tj = 125 C switches off, VQ = 16.5 V Tj = 125 C
Status Output Analog (StA) Normal function Error output 6 Error output 5 Overload output 4 Overload output 3 Overload output 2 Overload output 1 Thermal overload Source resistance of analog status output Delay time of status Delay time of output protection
VStA VStA VStA VStA VStA VStA VStA VStA RQStA tdStA/D tdSQ1-6
1.0 1.4 1.8 2.2 2.6 3.0 3.5 30
0.5 1.3 1.7 2.1 2.5 2.9 3.3
V V V V V V V V s s - IQStA = 50 ... 100 A
250
10 10
15
30 30
overload at switches 5 and 6 switches 5 and 6 during turn on
Status Output Digital (StD) Pull-up resistance Saturation voltage
RStD VStDSat
10
20
30 0.4
k V
IStD = 4 mA
Semiconductor Group
8
TLE 4226 G
Test Circuit S1 in position 1: all outputs can be activated (position 1) or deactivated (position 2) by S2 S1 in position 2: preferred state
Semiconductor Group
9
TLE 4226 G
Application Circuit
*) The capacitance depends on the inductance and current load of the supply.
Semiconductor Group
10
TLE 4226 G
Permissible Load Inductance versus Load Current
Shorted Load Current IQ5, 6 versus Output Voltage (Outputs 5 and 6)
Note: While switching the maximum inductive loads, the maximum temperature Tj of 150 C may be briefly exceeded. The IC will not be destroyed by this, but the restrictions concerning useful life should be observed.
Semiconductor Group
11
TLE 4226 G
Timing Diagrams
Signals of Inputs and Outputs of Switches 1 to 6 Normal Function (no Error) Semiconductor Group 12
TLE 4226 G
Signals of Inputs and Outputs of Switches 1 to 4 Shorted Load to Supply Voltage of Load Circuit
Signals of Inputs and Outputs of Switches 5 and 6 Shorted Load to Supply Voltage of Load Circuit Semiconductor Group 13
TLE 4226 G
Signals of Inputs and Outputs of Switches 5 and 6 Shorted Load to Ground
Semiconductor Group
14
TLE 4226 G
Package Outlines
P-DSO-24-3 (Plastic Dual Small Outline Package)
Sorts of Packing Package outlines for tubes, trays etc. are contained in our Data Book "Package Information". SMD = Surface Mounted Device Semiconductor Group 15
Dimensions in mm
GPS05144

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