Data Sheet, Rev. 1.1, October 2008 TLE42794 Low Dropout Fixed Voltage Regulator Automotive Power Low Dropout Fixed Voltage Regulator 1 TLE42794 Overview Features • • • • • • • • • • • • • • • • Output Voltage 5 V ± 2% Ouput Current up to 150 mA Very low Current Consumption Early Warning Power-on and Undervoltage Reset with Programmable Delay Time Reset Low Down to VQ = 1 V Adjustable Reset Threshold Very Low Dropout Voltage Output Current Limitation Reverse Polarity Protection Overtemperature Protection Suitable for Use in Automotive Electronics Wide Temperature Range from -40 °C up to 150 °C Input Voltage Range from -42 V to 45 V Green Product (RoHS compliant) AEC Qualified PG-DSO-8 Description The TLE42794G is a monolithic integrated low dropout voltage regulator, especially designed for automotive applications. An input voltage up to 45 V is regulated to an output voltage of 5.0 V. The component is able to drive loads up to 150 mA. It is short-circuit protected by the implemented current limitation and has an integrated overtemperature shutdown. A reset signal is generated for an output voltage VQ,rt of typically 4.65 V. This threshold can be decreased by an external resistor divider. The power-on reset delay time can be programmed by the external delay capacitor. The additional sense comparator provides an early warning function: Any voltage (e.g. the input voltage) can be monitored, an under-voltage condition is indicated by setting the comparator’s output to low. If pull-up resistors are desired at the outputs of the reset and the sense comparator, the TLE42694 with integrated pull-up reistors can be used instead of the TLE42794. PG-DSO-14 PG-SSOP-14 exposed pad Type Package Marking TLE42794G PG-DSO-8 42794G TLE42794GM PG-DSO-14 42794GM TLE42794E PG-SSOP-14 exposed pad 42794E Data Sheet 2 Rev. 1.1, 2008-10-09 TLE42794 Overview Dimensioning Information on External Components The input capacitor CI is recommended for compensation of line influences. The output capacitor CQ is necessary for the stability of the control loop. Circuit Description The control amplifier compares a reference voltage to a voltage that is proportional to the output voltage and drives the base of the series transistor via a buffer. Saturation control as a function of the load current prevents any oversaturation of the power element. The component also has a number of internal circuits for protection against: • • • Overload Overtemperature Reverse polarity Data Sheet 3 Rev. 1.1, 2008-10-09 TLE42794 Block Diagram 2 Block Diagram Ι Q Error Amplifier Current and Saturation Control Reference Trimming D RO & Reference SO RADJ SI GND Figure 1 Data Sheet AEB01955 Block Diagram 4 Rev. 1.1, 2008-10-09 TLE42794 Pin Configuration 3 Pin Configuration 3.1 Pin Assignment TLE42794G (PG-DSO-8) Ι SΙ RADJ D 1 2 3 4 8 7 6 5 Q SO RO GND AEP01668 Figure 2 Pin Configuration (top view) 3.2 Pin Definitions and Functions TLE42794G (PG-DSO-8) Pin Symbol Function 1 I Input for compensating line influences, a capacitor to GND close to the IC terminals is recommended 2 SI Sense Input connect the voltage to be monitored; connect to Q if the sense comparator is not needed 3 RADJ Reset Threshold Adjust connect an external voltage divider to adjust reset threshold; connect to GND for using internal threshold 4 D Reset Delay Timing connect a ceramic capacitor to GND for adjusting the reset delay time; leave open if the reset function is not needed 5 GND Ground 6 RO Reset Output open collector output; external pull-up resistor required, respecting values given in Item 5.6.5; leave open if the reset function is not needed 7 SO Sense Output open collector output; external pull-up resistor required, respecting values given in Item 5.8.6; leave open if the sense comparator is not needed 8 Q Output block to GND with a capacitor close to the IC terminals, respecting the values given for its capacitance CQ and ESR in “Functional Range” on Page 9 Data Sheet 5 Rev. 1.1, 2008-10-09 TLE42794 Pin Configuration 3.3 Pin Assignment TLE42794GM (PG-DSO-14) RADJ D GND GND GND GND RO 1 2 3 4 5 6 7 14 13 12 11 10 9 8 SI Ι GND GND GND Q SO AEP02248 Figure 3 Pin Configuration (top view) 3.4 Pin Definitions and Functions TLE42794GM (PG-DSO-14) Table 1 Pin Symbol Function 1 RADJ Reset Threshold Adjust connect an external voltage divider to adjust reset threshold; connect to GND for using internal threshold 2 D Reset Delay Timing connect a ceramic capacitor to GND for adjusting the reset delay time; leave open if the reset function is not needed 3, 4, 5, 6 GND Ground connect all pins to PCB and heatsink area 7 RO Reset Output open collector output; external pull-up resistor required, respecting values given in Item 5.6.5; leave open if the reset function is not needed 8 SO Sense Output open collector output; external pull-up resistor required, respecting values given in Item 5.8.6; leave open if the sense comparator is not needed 9 Q Output block to GND with a capacitor close to the IC terminals, respecting the values given for its capacitance CQ and ESR in the table “Functional Range” on Page 9 10, 11, 12 GND Ground connect all pins to PCB and heatsink area 13 I Input for compensating line influences, a capacitor to GND close to the IC terminals is recommended 14 SI Sense Input connect the voltage to be monitored; connect to Q if the sense comparator is not needed Data Sheet 6 Rev. 1.1, 2008-10-09 TLE42794 Pin Configuration 3.5 Pin Assignment TLE42794E (PG-SSOP-14 exposed pad) 5$'QF ' *1' QF QF 52 6, , QF 4 QF QF 62 3LQ&RQILJB6623YVG Figure 4 Pin Configuration (top view) 3.6 Pin Definitions and Functions TLE42794E (PG-SSOP-14 exposed pad) Table 2 Pin Symbol Function 1 RADJ Reset Threshold Adjust connect an external voltage divider to adjust reset threshold; connect to GND for using internal threshold 2, 5, 6 n.c. not connected 3 D Reset Delay Timing connect a ceramic capacitor to GND for adjusting the reset delay time; leave open if the reset function is not needed 4 GND Ground connect all pins to PCB and heatsink area 7 RO Reset Output open collector output; external pull-up resistor required, respecting values given in Item 5.6.4; leave open if the reset function is not needed 8 SO Sense Output open collector output; external pull-up resistor required, respecting values given in Item 5.8.6; leave open if the sense comparator is not needed 9, 10, 12 n.c. not connected 11 Q Output block to GND with a capacitor close to the IC terminals, respecting the values given for its capacitance CQ and ESR in the table “Functional Range” on Page 9 13 I Input for compensating line influences, a capacitor to GND close to the IC terminals is recommended 14 SI Sense Input connect the voltage to be monitored; connect to Q if the sense comparator is not needed Data Sheet 7 Rev. 1.1, 2008-10-09 TLE42794 General Product Characteristics 4 General Product Characteristics 4.1 Absolute Maximum Ratings Absolute Maximum Ratings 1) -40 °C ≤ Tj ≤ 150 °C; all voltages with respect to ground, positive current flowing into pin (unless otherwise specified) Pos. Parameter Symbol Limit Values Unit Conditions Min. Max. VI -40 45 V – VQ -0.3 7 V – VD -0.3 7 V – Tj Tstg -40 150 °C – -50 150 °C – VESD,HBM -2 2 kV Human Body Model (HBM)2) VESD,CDM -500 500 V Charge Device Model (CDM)3) -750 750 V Charge Device Model (CDM)3) at corner pins Input, Sense Input 4.1.1 Voltage Output, Reset Output, Sense Output 4.1.2 Voltage Reset Delay, Reset Threshold 4.1.3 Voltage Temperature 4.1.4 Junction Temperature 4.1.5 Storage Temperature ESD Absorption 4.1.6 ESD Absorption 4.1.7 4.1.8 1) not subject to production test, specified by design 2) ESD susceptibility Human Body Model “HBM” according to AEC-Q100-002 - JESD22-A114 3) ESD susceptibility Charged Device Model “CDM” according to ESDA STM5.3.1 Note: Stresses above the ones listed here may cause permanent damage to the device. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Note: Integrated protection functions are designed to prevent IC destruction under fault conditions described in the data sheet. Fault conditions are considered as “outside” normal operating range. Protection functions are not designed for continuous repetitive operation. Data Sheet 8 Rev. 1.1, 2008-10-09 TLE42794 General Product Characteristics 4.2 Pos. Functional Range Parameter 4.2.1 Input Voltage 4.2.2 Output Capacitor’s Requirements for Stability 4.2.3 Junction Temperature Symbol VI CQ ESR(CQ) Tj Limit Values Unit Conditions Min. Max. 5.5 45 V – 10 – µF –1) – 3 Ω –2) -40 150 °C – 1) the minimum output capacitance requirement is applicable for a worst case capacitance tolerance of 30% 2) relevant ESR value at f = 10 kHz Note: Within the functional range the IC operates as described in the circuit description. The electrical characteristics are specified within the conditions given in the related electrical characteristics table. Data Sheet 9 Rev. 1.1, 2008-10-09 TLE42794 General Product Characteristics 4.3 Pos. Thermal Resistance Parameter Symbol Limit Value Min. Typ. Unit Conditions Max. TLE42794G (PG-DSO-8) 4.3.4 Junction to Soldering Point1) RthJSP RthJA – 80 – K/W measured to pin 5 – 113 – K/W 2) 4.3.6 – 172 – K/W Footprint only3) 4.3.7 – 142 – K/W 300mm2 heatsink area on PCB3) 4.3.8 – 136 – K/W 600mm2 heatsink area on PCB3) 4.3.5 Junction to Ambient 1) TLE42794GM (PG-DSO-14) 4.3.9 Junction to Soldering Point1) RthJSP – 27 – K/W measured to group of pins 3, 4, 5, 10, 11, 12 4.3.10 Junction to Ambient1) RthJA – 63 – K/W 2) 4.3.11 – 104 – K/W Footprint only3) 4.3.12 – 73 – K/W 300mm2 heatsink area on PCB3) 4.3.13 – 65 – K/W 600mm2 heatsink area on PCB3) TLE42794E (PG-SSOP-14 exposed pad) 4.3.14 Junction to Case1) RthJC – 10 – K/W measured to Exposed Pad 4.3.15 Junction to Ambient1) RthJA – 47 – K/W 2) 4.3.16 – 145 – K/W Footprint only3) 4.3.17 – 63 – K/W 300mm2 heatsink area on PCB3) 4.3.18 – 53 – K/W 600mm2 heatsink area on PCB3) 1) not subject to production test, specified by design 2) Specified RthJA value is according to Jedec JESD51-2,-5,-7 at natural convection on FR4 2s2p board; The Product (Chip+Package) was simulated on a 76.2 x 114.3 x 1.5 mm³ board with 2 inner copper layers (2 x 70µm Cu, 2 x 35µm Cu). Where applicable a thermal via array under the exposed pad contacted the first inner copper layer. 3) Specified RthJA value is according to JEDEC JESD 51-3 at natural convection on FR4 1s0p board; The Product (Chip+Package) was simulated on a 76.2 × 114.3 × 1.5 mm3 board with 1 copper layer (1 x 70µm Cu). Data Sheet 10 Rev. 1.1, 2008-10-09 TLE42794 Block Description and Electrical Characteristics 5 Block Description and Electrical Characteristics 5.1 Voltage Regulator The output voltage VQ is controlled by comparing a portion of it to an internal reference and driving a PNP pass transistor accordingly. The control loop stability depends on the output capacitor CQ, the load current, the chip temperature and the poles/zeros introduced by the integrated circuit. To ensure stable operation, the output capacitor’s capacitance and its equivalent series resistor ESR requirements given in the table “Functional Range” on Page 9 have to be maintained. For details see also the typical performance graph “Output Capacitor Series Resistor ESR(CQ) versus Output Current IQ” on Page 14. As the output capacitor also has to buffer load steps it should be sized according to the application’s needs. An input capacitor CI is strongly recommended to compensate line influences. Connect the capacitors close to the component’s terminals. A protection circuitry prevent the IC as well as the application from destruction in case of catastrophic events. These safeguards contain an output current limitation, a reverse polarity protection as well as a thermal shutdown in case of overtemperature. In order to avoid excessive power dissipation that could never be handled by the pass element and the package, the maximum output current is decreased at input voltages above VI = 22 V. The thermal shutdown circuit prevents the IC from immediate destruction under fault conditions (e.g. output continuously short-circuited) by switching off the power stage. After the chip has cooled down, the regulator restarts. This leads to an oscillatory behaviour of the output voltage until the fault is removed. However, junction temperatures above 150 °C are outside the maximum ratings and therefore significantly reduce the IC’s lifetime. The TLE42794 allows a negative supply voltage. In this fault condition, small currents are flowing into the IC, increasing its junction temperature. This has to be considered for the thermal design, respecting that the thermal protection circuit is not operating during reverse polarity conditions. Supply II I Q Regulated Output Voltage IQ Saturation Control Current Limitation C CI Temperature S hutdown BlockDiagram_VoltageRegulator.vsd Figure 5 Data Sheet Bandgap Reference E SR } CQ LOAD GND Voltage Regulator 11 Rev. 1.1, 2008-10-09 TLE42794 Block Description and Electrical Characteristics 5.2 Electrical Characteristics Voltage Regulator Electrical Characteristics Voltage Regulator VI = 13.5 V, -40 °C ≤ Tj ≤150 °C, all voltages with respect to ground, positive current flowing into pin (unless otherwise specified) Pos. Parameter Symbol Min. Typ. Max. 5.2.1 Output Voltage VQ 4.9 5.0 5.2.2 Output Current Limitation Load Regulation steady-state IQ,max ∆VQ,load 150 5.2.3 -30 5.2.4 Line Regulation steady-state ∆VQ,line 5.2.5 Dropout Voltage1) Vdr = VI - VQ Limit Values Unit Conditions 5.1 V 100 µA < IQ < 100 mA 6 V < VI < 18 V 200 500 mA -15 – mV – 10 40 mV Vdr – 250 500 mV VQ = 4.8V IQ = 5 mA to 100 mA VI = 6 V VI = 6 V to 32 V IQ = 5 mA IQ = 100 mA 5.2.6 Overtemperature Shutdown Threshold Tj,sd 151 – 200 °C Tj increasing2) 5.2.7 Overtemperature Shutdown Threshold Hysteresis Tj,sdh – 15 – °C Tj decreasing2) fripple = 100 Hz Vripple = 0.5 Vpp 1) measured when the output voltage VQ has dropped 100mV from the nominal value obtained at VI = 13.5V 5.2.8 Power Supply Ripple Rejection2) PSRR – 70 – dB 2) not subject to production test, specified by design Data Sheet 12 Rev. 1.1, 2008-10-09 TLE42794 Block Description and Electrical Characteristics 5.3 Typical Performance Characteristics Voltage Regulator Output Voltage VQ versus Junction Temperature TJ Output Current IQ versus Input Voltage VI 01_VQ_TJ.VSD 5,2 02_IQ_VI.VSD 300 V Q = 4.8 V I Q = 5 mA V I = 13.5 V 5,1 250 I Q,max [mA] 4,9 V Q [V] 5 4,8 200 150 100 4,7 50 4,6 0 -40 0 40 80 120 T j = 150 °C 0 160 10 Power Supply Ripple Rejection PSRR versus ripple frequency fr 3,5 T j = 25 °C I Q = 10 mA C Q = 10 µF ceramic [mV] 3 ∆VQ P S RR [d B ] T j = 150 °C I Q = 5 mA 4 40 2 1,5 20 1 10 0,5 0 0,01 T j = 25 °C 2,5 30 T j = -40 °C 0 0,1 1 10 100 1000 0 f [kHz] Data Sheet 40 04_DVQ_DVI.VSD 4,5 03_PSRR_FR.VSD 70 50 30 Line Regulation ∆VQ,line versus Input Voltage VI 80 60 20 V I [V] T j [°C] 90 T j = -40 °C T j = 25 °C 10 20 30 40 V I [V] 13 Rev. 1.1, 2008-10-09 TLE42794 Block Description and Electrical Characteristics Load Regulation ∆VQ,load versus Output Current IQ Output Capacitor Series Resistor ESR(CQ) versus Output Current IQ 05_DVQ_DIQ.VSD 0 06_ESR_IQ.VSD 100 VI = 13.5 V C Q = 10 µF V I = 13.5 V -2 ∆VQ -8 ESR(C Q ) [Ω ] [mV] -6 Unstable Region 10 -4 T j = -40 T j = 25 °C T j = 150 -10 1 Stable Region 0,1 -12 0,01 -14 0 20 40 60 80 0 100 50 100 150 IQ [mA] I Q [mA] Dropout Voltage Vdr versus Output Current IQ Dropout Voltage Vdr versus Junction Temperature Ti 07_VDR_IQ.VSD 300 08_VDR_TJ.VSD 300 I Q = 100 mA 250 T j = 25 °C 200 200 T j = -40 °C V DR [mV] V DR [mV] 250 T j = 150 °C 150 150 100 100 50 50 I Q = 25 mA I Q = 5 mA I Q = 100 µA 0 0 0 20 40 60 80 -40 100 40 80 120 160 T j [°C] I Q [mA] Data Sheet 0 14 Rev. 1.1, 2008-10-09 TLE42794 Block Description and Electrical Characteristics 5.4 Current Consumption Electrical Characteristics Voltage Regulator VI = 13.5 V, -40 °C ≤ Tj ≤150 °C, all voltages with respect to ground, positive current flowing into pin (unless otherwise specified) Pos. Parameter Symbol Limit Values Unit Conditions IQ = 100 µA Tj = 25 °C IQ = 100 µA Tj ≤ 85 °C IQ = 10 mA IQ = 50 mA Min. Typ. Max. – 210 280 µA 5.4.2 – 240 300 µA 5.4.3 – 0.7 1 mA 5.4.4 – 3.5 8 mA 5.4.1 Current Consumption Iq = IQ - II Data Sheet Iq 15 Rev. 1.1, 2008-10-09 TLE42794 Block Description and Electrical Characteristics 5.5 Typical Performance Characteristics Current Consumption Current Consumption Iq versus Output Current IQ (IQ low) Current Consumption Iq versus Output Current IQ 09_IQ_IQ_IQLOW.VSD 1,6 V I = 13.5 V T j = 25 °C 1,4 V I = 13.5 V T j = 25 °C 10 8 1 I q [mA] I q [mA] 1,2 10_IQ_IQ.VSD 12 0,8 0,6 6 4 0,4 2 0,2 0 0 0 5 10 15 20 25 0 I Q [mA] 20 40 60 80 100 120 I Q [mA] Current Consumption Iq versus Input Voltage VI 11_IQ_VI.VSD 6 5 I q [mA] 4 R LOAD = 100 Ω 3 2 1 R LOAD = 50 k Ω 0 0 10 20 30 40 V I [V] Data Sheet 16 Rev. 1.1, 2008-10-09 TLE42794 Block Description and Electrical Characteristics 5.6 Reset Function The reset function provides several features: Output Undervoltage Reset: An output undervoltage condition is indicated by setting the Reset Output RO to “low”. This signal might be used to reset a microcontroller during low supply voltage. Power-On Reset Delay Time: The power-on reset delay time trd allows a microcontoller and oscillator to start up. This delay time is the time frame from exceeding the reset switching threshold VRT until the reset is released by switching the reset output “RO” from “low” to “high”. The power-on reset delay time trd is defined by an external delay capacitor CD connected to pin D charged by the delay capacitor charge current ID,ch starting from VD = 0 V. If the application needs a power-on reset delay time trd different from the value given in Item 5.6.7, the delay capacitor’s value can be derived from the specified values in Item 5.6.7 and the desired power-on delay time: t rd, new C D = ---------------- × 47nF t rd with • • • CD: capacitance of the delay capacitor to be chosen trd,new: desired power-on reset delay time trd: power-on reset delay time specified in this datasheet For a precise calculation also take the delay capacitor’s tolerance into consideration. Reset Reaction Time: The reset reaction time avoids that short undervoltage spikes trigger an unwanted reset “low” signal. The reset reaction rime trr considers the internal reaction time trr,int and the discharge time trr,d defined by the external delay capacitor CD (see typical performance graph for details). Hence, the total reset reaction time becomes: t rr = t rd, int + t rr, d with • • • trr: reset reaction time trr,int: internal reset reaction time trr,d: reset discharge Data Sheet 17 Rev. 1.1, 2008-10-09 TLE42794 Block Description and Electrical Characteristics Reset Output Pull-Up Resistor RRO: The Reset Output RO is an open collector output requiring an external pull-up resistor. In Table “Electrical Characteristics Reset Function” on Page 20 a minimum value for the external resistor RRO is given. Keep in mind to stay within the values specified for the Reset Output RO in Table 4.1 “Absolute Maximum Ratings” on Page 8 Reset Adjust Function The undervoltage reset switching threshold can be adjusted according to the application’s needs by connecting an external voltage divider (RADJ1, RADJ2) at pin RADJ. For selecting the default threshold connect pin RADJ to GND. When dimensioning the voltage divider, take into consideration that there will be an additional current constantly flowing through the resistors. With a voltage divider connected, the reset switching threshold VRT,new is calculated as follows: R ADJ, 1 + R ADJ, 2 V RT, new = ------------------------------------------ × V RADJ, th R ADJ, 2 with • • • VRT,new: the desired new reset switching threshold RADJ1, RADJ2: resistors of the external voltage divider VRADJ,th: reset adjust switching threshold given in Table “Electrical Characteristics Reset Function” on Page 20 Supply I Q Int. Supply Control VDD CQ ID,ch Reset I RO VDST VRADJ,th RRO RO OR RADJ,1 MicroController RADJ I RADJ GND optional ID,dch D BlockDiagram_ResetAdjust.vsd RADJ,2 GND CD Figure 6 Data Sheet Block Diagram Reset Function 18 Rev. 1.1, 2008-10-09 TLE42794 Block Description and Electrical Characteristics VI t t < trr,total VQ VRT 1V t t rd VD V DU V DRL t VRO V RO,low t rd trr,total trd t rr,total t rd t rr,total 1V t Thermal Shutdown Figure 7 Data Sheet Input Voltage Dip Undervoltage Spike at output Overload T i mi n g Di a g ra m_ Re se t . vs Timing Diagram Reset 19 Rev. 1.1, 2008-10-09 TLE42794 Block Description and Electrical Characteristics Electrical Characteristics Reset Function VI = 13.5 V, -40 °C ≤ Tj ≤ 150 °C, all voltages with respect to ground, positive current flowing into pin (unless otherwise specified) Pos. Parameter Symbol Limit Values Unit Conditions Min. Typ. Max. 4.5 4.65 4.8 V VQ decreasing Output Undervoltage Reset 5.6.1 Default Output Undervoltage Reset VRT Switching Thresholds Output Undervoltage Reset Threshold Adjustment 5.6.2 Reset Adjust Switching Threshold VRADJ,th 1.26 1.35 1.44 V 3.5 V ≤ VQ < 5 V 5.6.3 Reset Adjustment Range1) VRT,range 3.50 – 4.65 V – Reset Output RO 5.6.4 Reset Output Low Voltage VRO,low – 0.1 0.4 V 1 V ≤ VQ ≤ VRT external RRO,ext = 10 kΩ 5.6.5 Reset Output External Pull-up Resistor to VQ RRO,ext 10 – – kΩ 1 V ≤ VQ ≤ VRT ; VRO ≤ 0.4 V VD trd VDU – – 5 V – 17 28 39 ms CD = 100 nF – 1.8 – V – Reset Delay Timing 5.6.6 Delay Pin Output Voltage 5.6.7 Power On Reset Delay Time 5.6.8 Upper Delay Switching Threshold 5.6.9 Lower Delay Switching Threshold VDL – 0.45 – V – 5.6.10 Delay Capacitor Charge Current ID,ch – 6.5 – µA VD = 1 V 5.6.11 Delay Capacitor Reset Discharge Current ID,dch – 70 – mA VD = 1 V 5.6.12 Delay Capacitor Discharge Time trr,d – 1.9 3 µs Calculated Value: 5.6.13 Internal Reset Reaction Time – 3 7 µs 5.6.14 Reset Reaction Time trr,int trr,total trr,d = CD*(VDU VDL)/ ID,dch CD = 100 nF CD = 0 nF 2) – 4.9 10 µs Calculated Value: trr,total = trr,int + trr,d CD = 100 nF 1) VRT is scaled linearly, in case the Reset Switching Threshold is modified 2) parameter not subject to production test; specified by design Data Sheet 20 Rev. 1.1, 2008-10-09 TLE42794 Block Description and Electrical Characteristics 5.7 Typical Performance Characteristics Reset Power On Reset Delay Time trd versus Junction Temperature Tj 12_TRD_TJ.VSD 35 C D = 100 nF 30 t rd [ms] 25 20 15 10 5 0 -40 0 40 80 120 160 T j [°C] Data Sheet 21 Rev. 1.1, 2008-10-09 TLE42794 Block Description and Electrical Characteristics 5.8 Early Warning Function The additional sense comparator provides an early warning function: Any voltage (e.g. the input voltage) can be monitored, an undervoltage condition is indicated by setting the comparator’s output to low. Sense Input Voltage VSI, High VSI, Low t Sense Output High Low t AED03049 Figure 8 Sense Timing Diagram Electrical Characteristics Early Warning Function VI = 13.5 V, -40 °C ≤ Tj ≤ 150 °C, all voltages with respect to ground, positive current flowing into pin (unless otherwise specified) Pos. Parameter Symbol Limit Values Unit Conditions 1.38 V – 1.22 1.28 V – 20 90 160 mV – -1 -0.1 1 µA – Min. Typ. Max. 1.24 1.31 1.16 Sense Comparator Input 5.8.1 Sense Threshold High 5.8.2 Sense Threshold Low 5.8.3 Sense Switching Hysteresis 5.8.4 Sense Input Current Data Sheet VSI,high VSI,low VSI,hy ISI 22 Rev. 1.1, 2008-10-09 TLE42794 Block Description and Electrical Characteristics Electrical Characteristics Early Warning Function VI = 13.5 V, -40 °C ≤ Tj ≤ 150 °C, all voltages with respect to ground, positive current flowing into pin (unless otherwise specified) Pos. Parameter Symbol Limit Values Min. Typ. Max. Unit Conditions VSI < VSI,low VI > 5.5 V RSO,ext = 10 kΩ VI > 5.5 V VSO ≤ 0.4 V Sense Comparator Output 5.8.5 Sense Output Low Voltage VSO,low – 0.1 0.4 V 5.8.6 Sense Output External Pull-up Resistor to VQ RSO,ext 10 – – kΩ Data Sheet 23 Rev. 1.1, 2008-10-09 TLE42794 Package Outlines 6 Package Outlines 0.1 2) 0.41+0.1 -0.06 0.2 8 5 1 4 5 -0.2 1) M B 0.19 +0.06 C 8 MAX. 1.27 4 -0.21) 1.75 MAX. 0.175 ±0.07 (1.45) 0.35 x 45˚ 0.64 ±0.25 6 ±0.2 A B 8x 0.2 M C 8x A Index Marking 1) Does not include plastic or metal protrusion of 0.15 max. per side 2) Lead width can be 0.61 max. in dambar area GPS01181 Figure 9 Data Sheet PG-DSO-8 24 Rev. 1.1, 2008-10-09 TLE42794 Package Outlines 1.75 MAX. C 1) 4 -0.2 B 1.27 0.64 ±0.25 0.1 2) 0.41+0.10 -0.06 6±0.2 0.2 M A B 14x 14 0.2 M C 8 1 7 1) 8.75 -0.2 8˚MAX. 0.19 +0.06 0.175 ±0.07 (1.47) 0.35 x 45˚ A Index Marking 1) Does not include plastic or metal protrusion of 0.15 max. per side 2) Lead width can be 0.61 max. in dambar area GPS01230 Figure 10 Data Sheet PG-DSO-14 25 Rev. 1.1, 2008-10-09 TLE42794 Package Outlines 0.15 M C A-B D 14x 0.64 ±0.25 1 8 1 7 0.2 M D 8x Bottom View 3 ±0.2 A 14 6 ±0.2 D Exposed Diepad B 0.1 C A-B 2x 14 7 8 2.65 ±0.2 0.25 ±0.05 2) 0.08 C 8˚ MAX. C 0.65 0.1 C D 0.19 +0.06 1.7 MAX. Stand Off (1.45) 0 ... 0.1 0.35 x 45˚ 3.9 ±0.11) 4.9 ±0.11) Index Marking 1) Does not include plastic or metal protrusion of 0.15 max. per side 2) Does not include dambar protrusion PG-SSOP-14-1,-2,-3-PO V02 Figure 11 PG-SSOP-14 exposed pad Green Product (RoHS compliant) To meet the world-wide customer requirements for environmentally friendly products and to be compliant with government regulations the device is available as a green product. Green products are RoHS-Compliant (i.e Pb-free finish on leads and suitable for Pb-free soldering according to IPC/JEDEC J-STD-020). For further information on alternative packages, please visit our website: http://www.infineon.com/packages. Data Sheet 26 Dimensions in mm Rev. 1.1, 2008-10-09 TLE42794 Revision History 7 Revision History Revision Date Changes 1.1 2008-10-09 package version TLE42794E in PG-SSOP-14 exposed pad and all related information added In “Overview” on Page 2 package graphic for PG-SSOP-14 exposed pad and product name “TLE42794E” added In Chapter 3 “Pin Assignment TLE42794E (PG-SSOP-14 exposed pad)” on Page 7 and “Pin Definitions and Functions TLE42794E (PG-SSOP-14 exposed pad)” on Page 7 added In “Thermal Resistance” on Page 10 values for TLE42794E added In “Package Outlines” on Page 24 outlines for TLE4279E added 1.0 Data Sheet 2008-09-19 initial version data sheet 27 Rev. 1.1, 2008-10-09 Edition 2008-10-09 Published by Infineon Technologies AG 81726 Munich, Germany © 2008 Infineon Technologies AG All Rights Reserved. Legal Disclaimer The information given in this document shall in no event be regarded as a guarantee of conditions or characteristics. With respect to any examples or hints given herein, any typical values stated herein and/or any information regarding the application of the device, Infineon Technologies hereby disclaims any and all warranties and liabilities of any kind, including without limitation, warranties of non-infringement of intellectual property rights of any third party. Information For further information on technology, delivery terms and conditions and prices, please contact the nearest Infineon Technologies Office (www.infineon.com). Warnings Due to technical requirements, components may contain dangerous substances. For information on the types in question, please contact the nearest Infineon Technologies Office. Infineon Technologies components may be used in life-support devices or systems only with the express written approval of Infineon Technologies, if a failure of such components can reasonably be expected to cause the failure of that life-support device or system or to affect the safety or effectiveness of that device or system. Life support devices or systems are intended to be implanted in the human body or to support and/or maintain and sustain and/or protect human life. If they fail, it is reasonable to assume that the health of the user or other persons may be endangered.