Intelligent Sixfold Low-Side Switch TLE 4226 G Bipolar-IC Features ● ● ● ● ● ● ● ● ● ● ● 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 Type ▼ TLE 4226 G ▼ New type P-DSO-24-3 Ordering Code Package Q67000-A9118 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 Symbol Function 1 IN1 Input switch 1, active high (50 mA) 2 IN2 Input switch 2, active high (50 mA) 3 IN3 Input switch 3, active high (50 mA) 4 IN4 Input switch 4, active high (50 mA) 5, 6, 7, 8 GND Ground, cooling 9 IN5 Input switch 5, active high (500 mA) 10 IN6 Input switch 6, active high (500 mA) 11 StA Status output analog 12 StD Status output digital (error = low) 13 VS Supply voltage 14 PREFST Preferred state input, active low 15 Q6 Output switch 6 (500 mA) 16 Q5 Output switch 5 (500 mA) 17, 18, 19, 20 GND Ground, cooling 21 Q4 Output switch 4 (50 mA) 22 Q3 Output switch 3 (50 mA) 23 Q2 Output switch 2 (50 mA) 24 Q1 Output switch 1 (50 mA) 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 Analog Status Digital Status Normal function Low High 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 Low Low Low Possible Input and Output Levels Supply Voltage VS PREFST IN1-6 Q1-Q4 Q5, Q6 2 to 5 V 5V 5V Low High High Random Low High Low High Low 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 µs. 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 µs 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 MΩ. 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. max. –1 – 0.7 – 0.7 10 25 20 Unit Remarks Voltages Supply voltage Supply voltage load circuit Input voltage VS VQ1-6 VIN1-6 , VPREFST V V V Currents Output current IQ1-6 Current at reverse poling Current at reverse poling Clamping current Clamping current IQ5-6 IQ1-4 IQZ5-6 IQZ1-4 – 500 – 50 Junction temperature Tj Storage temperature limited internally 700 70 mA mA mA mA – 40 150 ˚C Tstg – 55 125 ˚C VS VS 4.75 4 5.25 V Output voltage VQ – 0.3 24 V Ambient temperature TA – 40 110 ˚C Invert current for Q1-6 in total Isup 50 Input voltage VIN – 0.5 Thermal resistance junction to case junction to ambient Rth JC Rth JA see diagram Overtemperature protection shuts down the switches 5 and 6 at 165 ˚C Operating Range Supply voltage full function, but status outputs cannot be evaluated Tj ≤ 150 ˚C mA 15 V 15 65 K/W K/W 1) 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 Limit Values min. Unit Test Condition typ. max. 8 50 11 65 mA mA Outputs OFF Outputs ON 1.8 1.2 0.6 2.1 1.5 1.0 3 1 3 V V V µA µA µA 0.9 V < VI < 6 V 0.2 V < VI < 0.9 V 0 V < VI < 6 V; VS = 0 V mA VS = 2 V and resistance from Supply Voltage (VS) Quiescent current Supply Current IS IS Inputs (IN1-6, PREFST) VIH VIL ∆VI IIH IIL II 1.3 0.9 0.3 –2 – 10 –2 Load Current IQ1-4 50 Saturation voltage Saturation voltage Saturation voltage Compare voltage Turn-ON delay time Turn-OFF delay time VQSat5, 6 VQSat1-4 VQSat1-4 Vcom tDON tDOFF 4.1 0.2 0.2 1 2 Monitoring threshold Shutdown threshold hysteresis TthSt Ttho 150 5 155 10 Reset threshold TthRes 140 H-input voltage L-input voltage Hysteresis H-Input current L-Input current Input current Power Outputs (Q1-6) 0.5 0.4 0.8 0.6 0.22 4.7 1.5 3.5 V V V V µs µs PREFST to ground < 1 MΩ 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 Overtemp. Protection Semiconductor Group 150 7 ˚C K only switches 5 and 6 are shut down ˚C after shutdown TLE 4226 G Characteristics (cont’d) VS = 5 V, unless stated otherwise; Tj = – 40 to 140 ˚C Parameter Symbol Limit Values min. typ. Unit Test Condition max. Outputs (Q1-6) Clamping voltage Clamping voltage VQ1-4 VQ5, 6 25.5 25.5 33 35 V V IQ = 50 mA IQ = 500 mA Shorted load current Shorted load current Sink current Shutdown threshold Leakage current IQ1-4 max IQ5, 6 IQ5, 6 60 500 2 170 900 10 mA mA µA VQ < 16.5 V VQ ≤ 10 V; Tj ≤ 130 ˚C VQ = 5 V IQ1-4 1 µA Leakage current IQ5, 6 200 µA switches off, VQ = 24 V Tj = 125 ˚C switches off, VQ = 16.5 V Tj = 125 ˚C 0.5 1.3 1.7 2.1 2.5 2.9 3.3 V V V V V V V V 250 Ω – IQStA = 50 ... 100 µA 30 µs 30 µs overload at switches 5 and 6 switches 5 and 6 during turn on 30 0.4 kΩ V IStD = 4 mA 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 VStA VStA VStA VStA VStA VStA VStA VStA 1.0 1.4 1.8 2.2 2.6 3.0 3.5 Source resistance of analog status output RQStA 30 Delay time of status tdStA/D 10 Delay time of output protection tdSQ1-6 10 15 Status Output Digital (StD) Pull-up resistance Saturation voltage Semiconductor Group RStD VStDSat 10 20 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 GPS05144 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