NCV7428MWL3R2G

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NCV7428 provides and monitors the low−voltage power supply for the application microcontroller and other loads and includes a LIN transceiver. www.onsemi.com 8 1 Features • Control Logic ♦ • • • • Quality • NCV Prefix for Automotive and Other Applications Requiring • Unique Site and Control Change Requirements; AEC−Q100 Qualified and PPAP Capable These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS Compliant Typical Applications November, 2018 − Rev. 7 MARKING DIAGRAMS 8 1 NV7428xx ALYW G G NV7428xx ALYWG G 1 A L Y W G = Assembly Location = Wafer Lot = Year = Work Week = Pb−Free Package (Note: Microdot may be in either location) PIN ASSIGNMENT 1 8 2 7 VS EN VOUT 3 GND 5 4 LIN RSTN 6 TxD RxD (Top View) ORDERING INFORMATION See detailed ordering, marking and shipping information in the package dimensions section on page 17 of this data sheet. • Automotive • Industrial Networks © Semiconductor Components Industries, LLC, 2016 DFN8 MW SUFFIX CASE 506DG NCV7428 Ensures safe power−up sequence and the correct reaction to different supply conditions ♦ Controls mode transitions including the power management and bus wakeup treatment ♦ Generates reset 3.3 V or 5 V VOUT Supply depending on the Version from a Low−drop Voltage Regulator ♦ Can deliver up to 70 mA with accuracy of ±2% ♦ Supplies typically the ECU’s microcontroller ♦ Undervoltage detector with a reset output to the supplied microcontroller LIN Transceiver ♦ LIN2.x and J2602 compliant ♦ TxD dominant timeout protection ♦ Transceiver mode controlled by dedicated input pin Protection and Monitoring Functions ♦ Thermal shutdown protection ♦ Load dump protection (45 V) ♦ LIN Bus pin protected against transients in an automotive environment ♦ ESD protection level for LIN and VS > ±8 kV Wettable Flank Package for Enhanced Optical Inspection 1 SOIC−8 D SUFFIX CASE 751AZ 1 Publication Order Number: NCV7428/D NCV7428 Block Diagram VOUT VS NCV7428 REF V−reg OSC VOUT VS VOUT Undervoltage Detection RSTN Thermal Shutdown Control Logic VS EN Wakeup Detection VOUT LIN Wakeup RxD Receiver LIN Active LIN VOUT TxD Driver & Slope Control Timeout GND Figure 1. Block Diagram Table 1. PIN DESCRIPTION Pin Number Pin Name Pin Type Pin Function 1 VS Battery supply input Principle power supply of the device 2 EN LV LIN enable input; internal pull−down Input of the LIN block enable signal 3 GND Ground connection Ground connection 4 LIN LIN bus interface LIN bus line 5 RxD LV digital output; push−pull Output of data received on LIN bus 6 TxD LV digital input; internal pull−up Input of the data to be transmitted from LIN bus 7 RSTN LV digital output; open drain; internal pull−up System reset 8 VOUT LV supply output Output of the 5 V or 3.3 V/70 mA low−drop regulator (for the MCU) EP EP Exposed Pad Connect to GND or leave floating NOTE: (LV = Low Voltage; HV = High Voltage) www.onsemi.com 2 NCV7428 Application Information ECU1 (MASTER) CVOUT VBAT LIN LIN CLIN_M CVOUT VCC VS VOUT NCV7428 RPU_LIN CVS RSTN EN MCU TxD LIN RxD LIN CLIN_S GND GND VCC VOUT NCV7428 VS DPU_LIN ECU2 (SLAVE) DREV RPU_RSTN CVS RPU_RSTN VBAT DREV RSTN EN TxD MCU RxD GND GND GND GND KL30 LIN−BUS KL31 Figure 2. Example Application Diagram External Components Overview of external components from application schematic in Figure 2 is given in Table 2 together with their recommended or required values. Table 2. EXTERNAL COMPONENTS OVERVIEW Component Name Description Value Note required values and types depend on the VOUT load and the application needs DREV Reverse polarity protection diode parameters application−specific; e.g. 0.5 A / 50 V CVS Filtering capacitor for the battery input recommended >100 nF ceramic CVOUT Voltage regulator output filtering and stabilization capacitor > 1.8 mF, ESR < 7 W DPU_LIN Master node Pull−up diode on LIN line RPU_LIN Master node Pull−up resistor on LIN line 1 kW nominal, ≥500 mW CLIN_M Filtering capacitor on LIN line (Master node) typically 1 nF optional; is function of the entire LIN network CLIN_S Filtering capacitor on LIN line (Slave node) typically 100 pF – 220 pF optional; is function of the entire LIN network RPU_RSTN Pull−up resistor at RSTN pin recommended 10 kW nominal optional; depends on application needs www.onsemi.com 3 required only for master LIN node NCV7428 Table 3. ABSOLUTE MAXIMUM RATINGS Symbol Parameter Min Max Units VS Maximum DC voltage at VS pin −0.3 45 V VOUT Maximum voltage at VOUT pin −0.3 6 V VLIN Maximum voltage at LIN bus pin −45 45 V VDig_IO_inputs Maximum voltage at digital input pins (TxD, EN) −0.3 45 V VDig_IO_outputs Maximum voltage at digital output pins (RxD, RSTN) −0.3 VOUT+0.3 V TAMB Ambient temperature range −40 +125 °C TJ Junction temperature range −40 +170 °C TSTG Storage temperature range −55 +150 °C VESD System ESD at pins VS, LIN as per IEC 61000−4−2: 330 W / 150 pF (Verified by external test house) ≥ ±14 kV Human body model at pins VS, LIN stressed towards GND with 1500 W / 100 pF ≥ ±8 kV Human body model at all pins as per JESD22−A114 / AEC−Q100−002 ≥ ±4 kV ≥ ±500 V ±200 V 2 1 − 260 °C Charge device model at all pins as per JESD22−C101 / AEC−Q100−011 Machine model; (200 pF; 0.75 mH; 10 W) as per JESD22−A115 / AEC−Q100−003 MSL Moisture Sensitivity Level SOIC DFN TSLD Lead temperature Soldering − Reflow (SMD styles only), Pb−Free (Note 1) Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed, damage may occur and reliability may be affected. 1. For information, please refer to our Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. Table 4. OPERATING RANGES Symbol VS Parameter VS operating voltage for parametric operation (Note 2) VS operating voltage for limited operation (Note 2) VOUT5 Regulated voltage at VOUT supply output for 5 V versions VOUT33 Regulated voltage at VOUT supply output for 3.3 V versions Min Max Units 5.5 28 V 4 28 V 4.9 5.1 V 3.234 3.366 V IVOUT Current delivered by the VOUT regulator 70 mA VLIN Operating voltage at LIN bus pin 0 VS V VDig_IO_inputs Operating voltage at digital input pins (TxD, EN) 0 5.5 V VDig_IO_outputs Operating voltage at digital output pins (RxD, RSTN) 0 VOUT V Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond the Recommended Operating Ranges limits may affect device reliability. 2. Below 5.5 V at VS pin in normal mode, the bus will either stay recessive or comply with the voltage level specifications and transition time specifications as required by SAE J2602. It is ensured by the battery monitoring circuit. Above 28 V at VS pin, LIN communication is operational (LIN pin toggling) but parameters cannot be guaranteed. For higher battery voltage operation above 28 V, LIN pull−up resistor must be selected large enough to avoid clamping of LIN pin by voltage drop over external pull−up resistor and LIN pin min current limitation. Table 5. THERMAL CHARACTERISTICS Rating Symbol Value Unit Thermal Characteristics, SOIC−8 (Note 3) Thermal Resistance Junction−to−Air, Free air, 1S0P PCB (Note 4) Thermal Resistance Junction−to−Air, Free air, 2S2P PCB (Note 5) RqJA RqJA 125 75 °C/W °C/W Thermal Characteristics, DFN−8 (Note 3) Thermal Resistance Junction−to−Air, Free air, 1S0P PCB (Note 4) Thermal Resistance Junction−to−Air, Free air, 2S2P PCB (Note 5) RqJA RqJA 133 55 °C/W °C/W 3. Refer to ELECTRICAL CHARACTERISTICS, RECOMMENDED OPERATING RANGES and/or APPLICATION INFORMATION for Safe Operating parameters. 4. Values based on test board according to EIA/JEDEC Standard JESD51−3, signal layer with 10% trace coverage. 5. Values based on test board according to EIA/JEDEC Standard JESD51−7, signal layers with 10% trace coverage for the signal layer and 4 thermal vias connected between exposed pad and first inner Cu layer. www.onsemi.com 4 NCV7428 Definitions The characteristics defined in this section are guaranteed within the operating ranges listed in Table 4, unless stated otherwise. All voltages are referenced to GND (Pin 3). Positive currents flow into the respective pin. Table 6. DC CHARACTERISTICS (VS = 5.5 V to 28 V; TJ = −40°C to +150°C; Bus Load = 500 W (VS to LIN); unless otherwise specified. Typical values are given at VS = 12 V and TJ = 25°C, unless otherwise specified.) Parameter Symbol Conditions Min Typ Max Unit SUPPLY MONITORING VS_PORH VS threshold for the power−up of the circuit VS rising 3.3 4 V VS_PORL VS threshold for the Shutdown of the circuit VS falling 2.2 3 V VOUT_RES_5 VOUT monitoring threshold NV7428−5 VOUT falling 4.55 4.75 V VOUT_RES_33 VOUT monitoring threshold NV7428−3 VOUT falling 2.97 3.135 V VOUT_RES_hys5 VOUT monitoring threshold hysteresis for NV7428−5 0.1 V VOUT_RES_hys33 VOUT monitoring threshold hysteresis for NV7428−3 0.06 V CURRENT CONSUMPTION IVS_LIN_Active_rec VS supply current LIN Active, LIN bus recessive 1.8 mA IVS_LIN_Wakeup VS supply current (Note 8) Standby mode; LIN Wakeup, LIN bus recessive; IVOUT = 0 mA VS = 13.5 V, TJ < 105°C 25 33 mA IVS_Sleep VS supply current (Note 8) Sleep mode; LIN Wakeup, LIN bus recessive; VOUT off, VOUT < 0.5 V VS = 13.5 V, TJ < 105°C 12 18 mA VOUT REGULATOR VOUT_5 VOUT regulator output voltage (Note 6) VOUT regulator active, 0 < IVOUT < 70 mA, Static regulation, VS = 5.5 V to 28 V 4.9 5 5.1 V VOUT_33 VOUT regulator output voltage (Note 6) VOUT regulator active, 0 < IVOUT < 70 mA, Static regulation, VS = 4.5 V to 28 V 3.234 3.3 3.366 V VOUT_5_EMC VOUT regulator output voltage under EMC (Note 8) DPI EMC test applied to LIN pin. No bus capacitor. SOIC8 package; (Note 7) 4.85 5 5.15 V VOUT_33_EMC VOUT regulator output voltage under EMC (Note 8) DPI EMC test applied to LIN pin. No bus capacitor. SOIC8 package; (Note 7) 3.201 3.3 3.399 V VOUT current limitation VOUT regulator active; current flowing to VOUT load 70 120 350 mA Drop−out voltage between VS and VOUT 5.5 V < VS < 40 V; IVOUT = 70 mA 0.55 V VOUT sink current VOUT regulator active, current flowing into the VOUT pin 100 240 400 mA VOUT regulator filtering capacitance (Note 9) Equivalent series resistance < 7 W 1.8 10 ILIM_VOUT VDROP_VOUT ISINK_VOUT CVOUT mF Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product performance may not be indicated by the Electrical Characteristics if operated under different conditions. 6. In case LIN bus capacitor of at least 82 pF is not used VOUT_5_EMC and VOUT_33_EMC needs to be taken into account. 7. Tested according to: LIN Conformance Test Specification Package for LIN 2.1, October 10th, 2008. Verified by external test house. 8. Values based on design and characterization. Not tested in production. 9. In parallel with this capacitor any other capacitor can be placed with no limit to ESR and capacitance value 10. The voltage drop in Normal mode between LIN and VS pin is the sum of the diode drop and the drop at serial pull−up resistor. The drop at the switch is negligible. See Figure 1. www.onsemi.com 5 NCV7428 Table 6. DC CHARACTERISTICS (VS = 5.5 V to 28 V; TJ = −40°C to +150°C; Bus Load = 500 W (VS to LIN); unless otherwise specified. Typical values are given at VS = 12 V and TJ = 25°C, unless otherwise specified.) Symbol Parameter Conditions Min Typ Max Unit 1.2 V 2.0 V VS V LIN TRANSMITTER VLIN_dom_LoSup LIN dominant output voltage TxD = Low; VS = 7.3 V VLIN_dom_HiSup LIN dominant output voltage TxD = Low; VS = 18 V VLIN_REC LIN recessive output voltage TxD = High; ILIN = 10 mA (Note 10) ILIN_lim Short circuit current limitation VLIN = VS = 18 V 40 Rslave Internal Pull−up Resistance LIN Normal or Receive−only mode 20 CLIN VS – 1.5 Capacitance at pin LIN (Note 8) 200 mA 33 47 kW 20 30 pF 0.4 VS LIN Receiver Vbus_dom Bus voltage for Dominant state Vbus_rec Bus voltage for Recessive state Vrec_dom Receiver threshold LIN bus going from Recessive to Dominant 0.6 0.4 0.6 VS Vrec_rec Receiver threshold LIN bus going from Dominant to Recessive 0.4 0.6 VS Vrec_cnt Receiver center voltage (Vrec_dom + Vrec_rec)/2 0.475 0.525 VS Vrec_hys 0.05 0.175 Receiver hysteresis Vrec_rec − Vrec_dom ILIN_off_dom LIN output current, Bus in dominant state LIN Active Mode, Driver Off; VS = 12 V, VLIN = 0 V −1 ILIN_off_dom_wake LIN output current, Bus in dominant state LIN Wakeup Mode; VS = 12 V, VLIN = 0 V −20 ILIN_off_rec LIN output current, Bus in recessive state Driver Off; VS < 18 V; VS < VLIN < 18 V ILIN_no_GND LIN current with missing GND VS = GND = 12 V; 0 < VLIN < 18 V ILIN_no_VBB LIN current with missing VS VS = GND = 0 V; 0 < VLIN < 18 V VS VS mA −15 −1 −2 mA 1 mA 1 mA 5 mA 0.8 V PIN EN VIL_EN Low−level input voltage VIH_EN High−level input voltage 2 Pull−down resistance to GND 55 Rpulldown_EN −0.3 100 5.5 V 185 kW PIN TxD VIL_TxD Low−level input voltage −0.3 0.8 V VIH_TxD High−level input voltage 2 5.5 V Rpullup_TxD 55 100 185 kW Leakage current VTxD = VOUT = 5.5 V −1 0 1 mA IOL_RSTN Low−level output driving current VS = 4 V to 28 V; VRSTN = 0.4 V 4 30 mA VOL_RSTN Low−level output voltage VS = 2 V to 4 V; VOUT = 0 V to 5.5 V; IRSTN = 100 mA 0.1 VOUT VS < 2 V; VOUT = 1 V to 5.5 V; IRSTN = 100 mA 0.1 VOUT 185 kW Ileak_TxD Pull−up resistance to VOUT PIN RSTN Rpullup_RSTN Pull−up resistance to VOUT 55 100 Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product performance may not be indicated by the Electrical Characteristics if operated under different conditions. 6. In case LIN bus capacitor of at least 82 pF is not used VOUT_5_EMC and VOUT_33_EMC needs to be taken into account. 7. Tested according to: LIN Conformance Test Specification Package for LIN 2.1, October 10th, 2008. Verified by external test house. 8. Values based on design and characterization. Not tested in production. 9. In parallel with this capacitor any other capacitor can be placed with no limit to ESR and capacitance value 10. The voltage drop in Normal mode between LIN and VS pin is the sum of the diode drop and the drop at serial pull−up resistor. The drop at the switch is negligible. See Figure 1. www.onsemi.com 6 NCV7428 Table 6. DC CHARACTERISTICS (VS = 5.5 V to 28 V; TJ = −40°C to +150°C; Bus Load = 500 W (VS to LIN); unless otherwise specified. Typical values are given at VS = 12 V and TJ = 25°C, unless otherwise specified.) Symbol Parameter Conditions Min Typ Max Unit 2 V PIN RSTN VS level guaranteeing Low level at RSTN pin Shutdown mode; Low level guaranteed for VS > VS_DigOut_Low IOL_RXD Low−level output driving current VRxD = 0.4 V IOH_RXD High−level output driving current VRXD = VOUT − 0.4 V VS_DigOut_Low PIN RxD 0.4 mA −0.16 mA 200 °C THERMAL SHUTDOWN TJ_SD Junction temperature for thermal Shutdown TJ_SD_hys Thermal Shutdown hysteresis 160 180 10 °C Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product performance may not be indicated by the Electrical Characteristics if operated under different conditions. 6. In case LIN bus capacitor of at least 82 pF is not used VOUT_5_EMC and VOUT_33_EMC needs to be taken into account. 7. Tested according to: LIN Conformance Test Specification Package for LIN 2.1, October 10th, 2008. Verified by external test house. 8. Values based on design and characterization. Not tested in production. 9. In parallel with this capacitor any other capacitor can be placed with no limit to ESR and capacitance value 10. The voltage drop in Normal mode between LIN and VS pin is the sum of the diode drop and the drop at serial pull−up resistor. The drop at the switch is negligible. See Figure 1. www.onsemi.com 7 NCV7428 Table 7. AC CHARACTERISTICS (VS = 5.5 V to 28 V; TJ = −40°C to +150°C; unless otherwise specified. For the transmitter parameters, the following bus loads are considered: L1 = 1 kW / 1 nF; L2 = 660 W / 6.8 nF; L3 = 500 W / 10 nF) Symbol Parameter Conditions Min Typ Max Unit LIN TRANSMITTER D1 Duty Cycle 1 = tBUS_REC(min) / (2 x tBIT) THREC(max) = 0.744 x VS THDOM(max) = 0.581 x VS tBIT = 50 ms VS = 7 V to 18 V 0.396 0.5 D2 Duty Cycle 2 = tBUS_REC(max) / (2 x tBIT) THREC(min) = 0.422 x VS THDOM(min) = 0.284 x VS tBIT = 50 ms VS = 7.6 V to 18 V 0.5 0.581 D3 Duty Cycle 3 = tBUS_REC(min) / (2 x tBIT) THREC(max) = 0.778 x VS THDOM(max) = 0.616 x VS tBIT = 96 ms VS = 7 V to 18 V 0.417 0.5 D4 Duty Cycle 4 = tBUS_REC(max) / (2 x tBIT) THREC(min) = 0.389 x VS THDOM(min) = 0.251 x VS tBIT = 96 ms VS = 7.6 V to 18 V 0.5 0.590 tfallNS LIN falling edge normal slope Normal Mode; VS = 12 V 22.5 ms triseNS LIN rising edge normal slope Normal Mode; VS = 12 V 22.5 ms tsymNS LIN slope symmetry normal slope Normal Mode; VS = 12 V 4 ms tfallLS LIN falling edge low slope (Note 12) Normal Mode; VS = 12 V 45 ms triseLS LIN rising edge low slope (Note 12) Normal Mode; VS = 12 V 45 ms ttx_prop_down Propagation Delay of TxD to LIN. TxD high to low (Note 11) 10 ms ttx_prop_up Propagation Delay of TxD to LIN. TxD low to high (Note 11) 10 ms tTxD_timeout TxD dominant timeout TxD = Low; LIN dominant timeout enabled 24 ms −4 9 0 13 LIN RECEIVER trec_prop_down Propagation delay of receiver falling edge 0.1 6 ms trec_prop_up Propagation delay of receiver rising edge 0.1 6 ms 2 ms trec_sym Propagation delay symmetry trec_prop_down − trec_prop_up −2 tLIN_wake Dominant duration for wakeup LIN in wakeup mode 30 80 150 ms Low power mode entry EN to TxD sampling point delay Normal mode: Figure 9, Figure 10 13 25 55 ms Normal mode or Reset mode transition time Low power mode: Figure 9, Figure 10 13 25 55 ms Low power mode transition time (Standby or Sleep) Normal mode: Figure 9, Figure 10 27 45 91 ms RSTN pulse extension Figure 6, Figure 7, Figure 8 3 5 10 ms Undervoltage detection filter time Figure 6 13 25 55 ms MODE TRANSITIONS AND TIMEOUTS tsample_txd tmode tlp_mode treset tVOUT_RES_filt 11. Values based on design and characterization. Not tested in production. 12. For low slope versions only (NV7428L5 and NV7428L3) www.onsemi.com 8 NCV7428 Functional Description VS Supply Input LIN Operating Modes VS pin of NCV7428 is typically connected to the car battery through a reverse−protection diode and can be exposed to all relevant automotive disturbances (ISO7637 pulses, system ESD ...). VS supplies mainly the integrated LIN transceiver. Filtering capacitors should be connected between VS and GND. During power−up of the battery supply, VS pin must reach VS_PORH level in order for the circuit to become functional – the internal state machine is initiated and the VOUT regulator is activated. The circuit remains functional until VS falls back below VS_PORL level, when the device enters the Shutdown mode. In LIN Active mode the transceiver can transmit and receive data via LIN bus with speed up to 20 kBaud for normal slope mode and 10 kBaud/s for low slope version. The transmit data stream of the LIN protocol is present on the TxD pin and converted by the transmitter into a LIN bus signal with controlled slew rate to minimize EMC emission. The receiver consists of the comparator that has a threshold with hysteresis in respect to the supply voltage and an input filter to remove bus noise. The LIN output is pulled HIGH via an internal pull−up resistor (typ. 30 kW). For master applications, it is needed to put an external resistor (typ. 1 kW) with a serial diode between LIN and VS. The mode selection is done by EN = High. The transmission is only initiated with the TxD falling edge in LIN Active mode. Entering this mode with TxD already Low will not lead to transmitting bus Dominant signal. When leaving Normal mode (EN pin falling edge), the transmitter is deactivated immediately. The LIN Wakeup mode can be entered if the EN pin is Low. The LIN receiver stays active to be able to detect a remote wake−up via bus. The LIN transmitter is disabled and the slave internal termination resistor of 30 kW between LIN and VS is disconnected in order to minimize current consumption. Only a pull−up current source between Vs and LIN is active. The valid LIN wakeup event causes driving RxD Low until EN pin is pulled High. A Wakeup pattern that is initiated in LIN Active mode and ends in LIN Wakeup mode is also considered a valid Wakeup event. The LIN Wakeup mode is also forced if the device enters to the Sleep operating mode. The LIN Off mode provides extreme low current consumption, LIN transceiver is fully deactivated. Pin RxD stays High (as long as VOUT is provided) and logical level on TxD is ignored. The bus pin is internally pulled to VS with a current source (thus limiting VS consumption in case of a permanent LIN short to GND). This mode is entered when NCV7428 is in Shutdown mode (VS < VS_PORL ) or in Thermal Shutdown mode (TJ > TJ_SD). VOUT Low−drop Voltage Regulator The application low−voltage supply is provided by an integrated low−drop voltage regulator delivering a 5 V or 3.3 V output VOUT. It is able to deliver up to 70 mA with given precision and is primarily intended to supply the application microcontroller unit (MCU) and related 5 V or 3.3 V loads (e.g. its own MCU−related digital inputs/ outputs). An external capacitor needs to be connected on VOUT pin in order to ensure the regulator’s stability and to filter the disturbances caused by the connected loads. All low−voltage digital pins are related to VOUT. LIN Transceiver NCV7428 integrates on−chip LIN transceiver interface between physical LIN bus and the LIN protocol controller. This LIN physical layer is compatible to LIN2.x and J2602 specifications. NCV7428 LIN2.2 compliant physical layer can be combined on the network with all previous LIN physical layers. NCV7428 LIN transceiver consists of a transmitter, receiver and wakeup detector. The LIN transceiver can be connected to the bus line via LIN pin, and to the digital control through pins TxD and RxD. The functional mode of the LIN transceiver depends on the operating mode and on EN pin state – see Figure 3. The LIN transceiver is supplied directly from the VS pin. www.onsemi.com 9 NCV7428 LIN Mode LIN Off Bus Pin Pull−up LIN Wakeup LIN Active Current Source 30 kW Resistor recessive LIN dominant TxD RxD EN ignored tTxD_timeout LIN Wakeup detected LIN Active mode set Figure 3. LIN Modes < tLIN_wake tLIN_wake recessive LIN dominant RxD EN LIN Wakeup detected Figure 4. LIN Wakeup Detection www.onsemi.com 10 LIN Active mode restored NCV7428 Operating Modes The principal operating modes of NCV7428 are shown in Figure 5 and described in the following paragraphs. Any mode (except for shutdown) Any mode VS < VS_PORL TJ > T J_SD THERMAL SHUTDOWN −VOUT: off −RSTN: Low −LIN: Wakeup mode −RxD: Low after Wakeup/ pulled to VOUT otherwise SHUTDOWN VS power−up −VOUT: off −RSTN: Low −LIN: Off mode −RxD: pulled to VOUT V S > VS_PORH and TJ < TJ_SD TJ < T J_SD RESET −VOUT : on −RSTN: Low −LIN: Wakeup mode −RxD: Low after Wakeup/ High otherwise STANDBY −VOUT: on −RSTN: High −LIN: Wakeup mode −RxD: Low after Wakeup/ High otherwise NORMAL EN = 1 −VOUT: on −RSTN: High −LIN: Active mode −RxD: Received LIN Data EN = 0 and TxD = 1 LIN_EN = 0 and TxD = 0 SLEEP −VOUT: off −RSTN: Low −LIN: Wakeup mode −RxD: pulled to VOUT Figure 5. Operating Modes www.onsemi.com 11 LIN wakeup or EN = 1 NCV7428 Shutdown Mode High when leaving Reset mode – treset time elapsed (Figure 8). LIN transceiver is in Active mode. VOUT is kept on. Pin RSTN remains High. The Shutdown mode is a passive state, in which all NCV7428 resources are inactive. The Shutdown mode provides a defined starting point for the circuit in case of supply undervoltage, thermal Shutdown or the first supply connection. On−chip power−supply VOUT is switched off and the LIN pin remains passive so that it does not disturb the communication of other nodes connected to the LIN bus. RxD pin stays pulled to VOUT. No wakeups can be detected. RSTN pin is forced Low – RSTN Low level is guaranteed for VS supply above VS_DigOut_Low. The Shutdown mode is entered asynchronously whenever the VS level falls below the power−on−reset level VS_PORL . The Shutdown mode is left only when the VS supply exceeds the high power−on−reset level VS_PORH while junction temperature is below TJ_SD . When exiting the Shutdown mode, NCV7428 always enters the Reset mode. Standby Mode Standby mode is entered from Normal mode after host request – EN pin falling edge followed by TxD pin High. TxD is sampled tsample_txd after EN edge (Figure 9). Standby mode is also entered if EN pin is Low when leaving Reset mode – treset time elapsed (Figure 7). LIN transceiver is in Wakeup mode – RxD pin is latched Low after valid Wakeup recognition until Normal mode is requested. VOUT is kept active. Pin RSTN remains High. Sleep Mode Sleep mode can be only entered from Normal mode after a host request – EN pin falling edge followed by TxD pin Low. LIN transmitter is blocked immediately after EN pin falling edge, therefor TxD pin and EN pin can be set Low at the same moment. TxD is sampled tsample_txd after EN pin edge (Figure 10). VOUT regulator is switched off, LIN transceiver is in the Wakeup mode. If LIN wakeup is detected or EN goes High, Reset mode is entered. LIN wakeup is signaled by RxD, which remains Low until Normal mode is restored (EN is High). RESET Mode The Reset mode is a transient mode providing a defined RSTN pulse for the application microcontroller. VOUT supply is kept active. The LIN pin is passive so that it does not disturb the communication of other nodes connected to the bus. RxD pin is High if no wakeup was detected, RxD Low level indicates pending LIN wakeup. Pin RSTN is forced Low. Reset mode will be entered as a consequence of one of the following events: • Shutdown mode is exited • Thermal Shutdown mode is exited • VOUT voltage falls below VOUT_RES level • LIN wakeup or EN = High was detected in Sleep mode Normally, the Reset mode is left when VOUT voltage is above VOUT_RES threshold and defined time treset elapses. The RSTN pin is internally released to High and the chip then goes to the Normal or Standby mode, depending on EN state. Thermal Shutdown The device junction temperature is monitored in order to avoid permanent degradation or damage of the chip. Junction temperature exceeding the Shutdown level TJ_SD puts the chip into Thermal Shutdown mode. In Thermal Shutdown mode, VOUT regulator is switched off. LIN transceiver is in Wakeup mode and can detect bus Wakeup. RxD pin stays pulled to VOUT or is driven Low after valid Wakeup recognition. RSTN pin is pulled low. The mode is automatically left only when the junction cools down below the TJ_SD threshold. Normal Mode Normal mode is entered from Standby mode after a host request – driving EN pin High (Figure 9), or if EN pin is www.onsemi.com 12 NCV7428 VS VOUT VS t VOUT_RES_ filt t VOUT_RES_ filt tVOUT_ RES_ filt < t VOUT_ RES_filt V OUT VOUT_RES VS_PORH treset treset RSTN EN Operating Shutdown mode Reset Standby Reset Standby Figure 6. VOUT Regulator Voltage Monitoring EN ignored TxD ignored RxD LIN wakeup indication treset RSTN Operating mode Reset VOUT > VOUT_RES Standby RSTN pulse released EN sampled Figure 7. Operating Modes, Transition from Reset to Standby Mode www.onsemi.com 13 NCV7428 ignored EN TxD ignored RxD LIN wakeup indication treset tmode RSTN Operating mode Reset Normal RSTN pulse released EN sampled VOUT > VOUT_RES Mode change LIN wakeup flag cleared Figure 8. Operating Modes, Transition from Reset to Normal Mode EN TxD sampling point TxD LIN ignored ignored LIN transmission blocked RxD LIN wakeup indication RSTN Operating mode Normal Standby tsample_txd Normal tmode tlp_mode Figure 9. Operating Modes, Transition from Normal to Standby Mode www.onsemi.com 14 NCV7428 EN TxD sampling point ignored TxD ignored LIN transmission blocked LIN RxD LIN wakeup indication VOUT OFF RSTN Operating mode Normal Sleep Reset tmode tsample_txd tlp_mode Figure 10. Operating Modes, Transition from Normal to Sleep Mode TxD t BIT tBIT 50% LIN t t BUS_dom(max) tBUS_rec(min) THREC(max) THDOM(max) Thresholds of receiving node 1 THREC(min) THDOM(min) Thresholds of receiving node 2 tBUS_dom(min) tBUS_rec(max) Figure 11. Definition of LIN Duty Cycle Parameters www.onsemi.com 15 t NCV7428 LIN 100% 60% 60% 40% 40% 0% tfall t trise Figure 12. Definition of LIN Edge Parameters TxD tBIT tBIT 50% t LIN VS 60% VS 40% VS t tx_prop_down t ttx _prop_up Figure 13. Definition of LIN Transmitter Timing Parameters LIN VS 60% VS 40% VS RxD trec_prop_down trec_prop_up t 50% Figure 14. Definition of LIN Receiver Timing Parameters www.onsemi.com 16 t NCV7428 ORDERING INFORMATION Part Number Description Marking NCV7428D15R2G LIN transceiver with 5 V regulator NV7428−5 NCV7428D13R2G LIN transceiver with 3.3 V regulator NV7428−3 NCV7428D1L5R2G LIN transceiver with 5 V regulator, low slope LIN NV7428L5 NCV7428D1L3R2G LIN transceiver with 3.3 V regulator, low slope LIN NV7428L3 NCV7428MW5R2G LIN transceiver with 5 V regulator NV7428−5 NCV7428MW3R2G LIN transceiver with 3.3 V regulator NV7428−3 NCV7428MWL5R2G LIN transceiver with 5 V regulator, low slope LIN NV7428L5 NCV7428MWL3R2G LIN transceiver with 3.3 V regulator, low slope LIN NV7428L3 Package Shipping † SOIC−8 (Pb−Free) 3000 / Tape & Reel DFN8 Wettable Flanks (Pb−Free) 3000 / Tape & Reel †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. www.onsemi.com 17 MECHANICAL CASE OUTLINE PACKAGE DIMENSIONS DFN8, 3x3, 0.65P CASE 506DG ISSUE A 1 SCALE 2:1 A B D PIN ONE REFERENCE 2X 0.10 C 2X DETAIL A ÉÉÉ ÉÉÉ ÉÉÉ ÉÉÉ 0.10 C L ALTERNATE TERMINAL CONSTRUCTION E A A3 SIDE VIEW SEATING PLANE 1 D2 DETAIL A 1 8X C A1 4 L e/2 8 5 8X b 0.10 C A B e BOTTOM VIEW 0.05 C *This information is generic. Please refer to device data sheet for actual part marking. Pb−Free indicator, “G” or microdot “ G”, may or may not be present. NOTE 3 RECOMMENDED SOLDERING FOOTPRINT* 2.56 1.70 ÇÇÇÇÇÇÇÇ ÇÇÇÇÇÇÇÇ ÇÇÇÇÇÇÇÇ ÇÇÇÇÇÇÇÇ 1 0.65 PITCH XXXXXX XXXXXX ALYWG G XXXXXX= Specific Device Code A = Assembly Location L = Wafer Lot Y = Year W = Work Week G = Pb−Free Package (Note: Microdot may be in either location) E2 K MILLIMETERS MIN MAX 0.80 1.00 0.00 0.05 0.20 REF 0.25 0.35 3.00 BSC 2.30 2.50 3.00 BSC 1.50 1.70 0.65 BSC 0.30 TYP 0.35 0.45 GENERIC MARKING DIAGRAM* 0.05 C NOTE 4 NOTES: 1. DIMENSIONING AND TOLERANCING PER ASME Y14.5M, 1994. 2. CONTROLLING DIMENSION: MILLIMETERS. 3. DIMENSION b APPLIES TO PLATED TERMINAL AND IS MEASURED BETWEEN 0.15 AND 0.30mm FROM THE TERMINAL TIP. 4. COPLANARITY APPLIES TO THE EXPOSED PAD AS WELL AS THE TERMINALS. DIM A A1 A3 b D D2 E E2 e K L TOP VIEW 0.05 C DATE 28 APR 2016 8X 0.60 3.30 8X 0.40 DIMENSIONS: MILLIMETERS *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. DOCUMENT NUMBER: DESCRIPTION: 98AON10527G DFN8 3X3, 0.65P Electronic versions are uncontrolled except when accessed directly from the Document Repository. Printed versions are uncontrolled except when stamped “CONTROLLED COPY” in red. PAGE 1 OF 1 ON Semiconductor and are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries in the United States and/or other countries. ON Semiconductor reserves the right to make changes without further notice to any products herein. ON Semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does ON Semiconductor assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. ON Semiconductor does not convey any license under its patent rights nor the rights of others. © Semiconductor Components Industries, LLC, 2019 www.onsemi.com MECHANICAL CASE OUTLINE PACKAGE DIMENSIONS SOIC−8 CASE 751AZ ISSUE B 8 1 SCALE 1:1 NOTES 4&5 0.10 C D 45 5 CHAMFER D h NOTE 6 D A 8 DATE 18 MAY 2015 H 2X 5 0.10 C D E E1 NOTES 4&5 L2 1 0.20 C D 4 8X B NOTE 6 TOP VIEW b 0.25 M L C DETAIL A C A-B D NOTES 3&7 NOTE 7 c 0.10 C e A1 C SIDE VIEW NOTE 8 DIM A A1 A2 b c D E E1 e h L L2 DETAIL A A2 A SEATING PLANE NOTES: 1. DIMENSIONING AND TOLERANCING PER ASME Y14.5M, 1994. 2. CONTROLLING DIMENSION: MILLIMETERS. 3. DIMENSION b DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE PROTRUSION SHALL BE 0.004 mm IN EXCESS OF MAXIMUM MATERIAL CONDITION. 4. DIMENSION D DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. MOLD FLASH, PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0.006 mm PER SIDE. DIMENSION E1 DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSION. INTERLEAD FLASH OR PROTRUSION SHALL NOT EXCEED 0.010 mm PER SIDE. 5. THE PACKAGE TOP MAY BE SMALLER THAN THE PACKAGE BOT­ TOM. DIMENSIONS D AND E1 ARE DETERMINED AT THE OUTER­ MOST EXTREMES OF THE PLASTIC BODY AT DATUM H. 6. DIMENSIONS A AND B ARE TO BE DETERMINED AT DATUM H. 7. DIMENSIONS b AND c APPLY TO THE FLAT SECTION OF THE LEAD BETWEEN 0.10 TO 0.25 FROM THE LEAD TIP. 8. A1 IS DEFINED AS THE VERTICAL DISTANCE FROM THE SEATING PLANE TO THE LOWEST POINT ON THE PACKAGE BODY. SEATING PLANE END VIEW RECOMMENDED SOLDERING FOOTPRINT* MILLIMETERS MIN MAX --1.75 0.10 0.25 1.25 --0.31 0.51 0.10 0.25 4.90 BSC 6.00 BSC 3.90 BSC 1.27 BSC 0.25 0.41 0.40 1.27 0.25 BSC GENERIC MARKING DIAGRAM* 8X 0.76 8 8X 1.52 1 7.00 XXXXX A L Y W G 1 1.27 PITCH DIMENSIONS: MILLIMETERS *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. DOCUMENT NUMBER: DESCRIPTION: 98AON34918E SOIC−8 XXXXX ALYWX G = Specific Device Code = Assembly Location = Wafer Lot = Year = Work Week = Pb−Free Package *This information is generic. Please refer to device data sheet for actual part marking. Pb−Free indicator, “G”, may or not be present. Electronic versions are uncontrolled except when accessed directly from the Document Repository. Printed versions are uncontrolled except when stamped “CONTROLLED COPY” in red. PAGE 1 OF 1 ON Semiconductor and are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries in the United States and/or other countries. ON Semiconductor reserves the right to make changes without further notice to any products herein. ON Semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does ON Semiconductor assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. ON Semiconductor does not convey any license under its patent rights nor the rights of others. © Semiconductor Components Industries, LLC, 2019 www.onsemi.com ON Semiconductor and are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries in the United States and/or other countries. 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