NCV7420 LIN Transceiver with 3.3V or 5 V Voltage Regulator General Description LIN−Bus Transceiver V BB 1 14 VCC LIN 2 13 RxD GND 3 12 TxD 11 GND 10 STB 9 EN 8 TEST GND 4 WAKE 5 INH 6 OTP_ZAP 7 SOIC 14 D SUFFIX CASE 751AP ORDERING INFORMATION Voltage Regulator • LIN compliant to specification revision 2.0 and 2.1 • • • • (backward compatible to version 1.3) and J2602 I3T high voltage technology Bus voltage ±45 V Transmission rate up to 20 kBaud SOIC 14 Green package This is a Pb−Free Device Output voltage 5 V / ~50 mA or 3.3 V / ~50 mA Wake−up input Enable inputs for stand−by and sleep mode INH output for auxiliary purposes (switching of an external pull−up or resistive divider towards battery, control of an external voltage regulator etc.) Modes • Normal mode: LIN communication in either low (up to Protection • Thermal shutdown • Indefinite short−circuit protection on pins LIN and • WAKE towards supply and ground • • Load dump protection (45 V) • Bus pins protected against transients in an automotive • PIN CONFIGURATION See detailed ordering and shipping information in the package dimensions section on page 19 of this data sheet. KEY FEATURES • • • • • http://onsemi.com NCV7420 The NCV7420 is a fully featured local interconnect network (LIN) transceiver designed to interface between a LIN protocol controller and the physical bus. The transceiver is implemented in I3T technology enabling both high−voltage analog circuitry and digital functionality to co−exist on the same chip. The NCV7420 LIN device is a member of the in−vehicle networking (IVN) transceiver family of ON Semiconductor that integrates a LIN v2.0/2.1 physical transceiver and either a 3.3 V or a 5 V voltage regulator. It is designed to work in harsh automotive environment and is submitted to the TS16949 qualification flow. The LIN bus is designed to communicate low rate data from control devices such as door locks, mirrors, car seats, and sunroofs at the lowest possible cost. The bus is designed to eliminate as much wiring as possible and is implemented using a single wire in each node. Each node has a slave MCU−state machine that recognizes and translates the instructions specific to that function. The main attraction of the LIN bus is that all the functions are not time critical and usually relate to passenger comfort. • environment System ESD protection level for LIN, WAKE and Vbb up to ±12 kV EMI Compatibility • Integrated slope control • Meets most demanding EMS/EME requirements 10 kBaud) or normal slope Sleep mode: VCC is switched “off” and no communication on LIN bus Stand−by mode: VCC is switched “on” but there is no communication on LIN bus Wake−up bringing the component from sleep mode into standby mode is possible either by LIN command or digital input signal on WAKE pin. Wake−up from LIN bus can also be detected and flagged when the chip is already in standby mode. Quality • Automotive Qualification According to AEC−Q100, Grade 1 © Semiconductor Components Industries, LLC, 2012 April, 2012 − Rev. 7 1 Publication Order Number: NCV7420/D NCV7420 Table 1. KEY TECHNICAL CHARACTERISTICS − 3.3 V version Symbol Vbb Parameter Nominal battery operating voltage (Note 1) Min Typ Max Unit 5 12 26 V Load dump protection (Note 2) 45 Ibb_SLP Supply current in sleep mode 20 mA Vcc_out (Note 4) Regulated Vcc output, Vcc load 1 mA−30 mA 3.23 3.30 3.37 V Regulated Vcc output, Vcc load 0 mA−50 mA 3.19 3.30 3.41 Iout_max Maximum Vcc output current (Note 3) 50 V_wake Operating DC voltage on WAKE pin 0 Vbb Maximum rating voltage on WAKE pin −45 45 Junction thermal shutdown temperature 165 195 °C Operating junction temperature −40 +150 °C Tj Tjunc mA V Table 2. KEY TECHNICAL CHARACTERISTICS − 5 V version Symbol Vbb Parameter Nominal battery operating voltage (Note 1) Min Typ Max Unit 6 12 26 V Load dump protection 45 Ibb_SLP Supply current in sleep mode 20 mA Vcc_out (Note 4) Regulated Vcc output, Vcc load 1 mA−30 mA 4.9 5.0 5.1 V Regulated Vcc output, Vcc load 0 mA−50 mA 4.83 5.0 5.17 Iout_max Maximum Vcc output current (Note 3) 50 V_wake Operating DC voltage on WAKE pin 0 Vbb Maximum rating voltage on WAKE pin −45 45 Junction thermal shutdown temperature 165 195 °C Operating junction temperature −40 +150 °C Tj Tjunc mA V 1. Below 5 V on VBB 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. 2. The applied transients shall be in accordance with ISO 7637 part 1, test pulse 5. The device complies with functional class C; class A can be reached depending on the application and external conditions. 3. Thermal aspects of the entire end−application have to be taken into account in order to avoid thermal shutdown of NCV7420. 4. Vcc voltage regulator output must be properly decoupled by external capacitor of min. 8 mF with ESR < 1 W to ensure stability. Table 3. THERMAL CHARACTERISTICS Symbol Parameter Conditions Value Unit Rth(vj−a)_1 Thermal resistance junction−to−ambient on JEDEC 1S0P PCB free air 140 K/W Rth(vj−a)_4 Thermal resistance junction−to−ambient on JEDEC 2S2P PCB free air 80 K/W http://onsemi.com 2 NCV7420 VBB VCC INH NCV7420 Osc Band− gap V−reg VBB WAKE VCC VBB POR STB VCC Thermal shutdown Control Logic VBB EN VCC Stand−by, Sleep Normal mode RxD LIN Receiver VCC Timeout TxD TEST Driver & Slope Control OTP_ZAP GND Figure 1. Block Diagram Typical Application determined by the length and capacitance of the LIN bus, the number and capacitance of Slave devices, the pull−up resistance of all devices (Master & Slave), and the required time constant of the system, respectively. Vcc voltage must be properly stabilized by external capacitor: capacitor of min. 8 mF (ESR < 1 W). Application Schematic The EMC immunity of the Master−mode device can be further enhanced by adding a capacitor between the LIN output and ground. The optimum value of this capacitor is http://onsemi.com 3 NCV7420 10uF VBB 10nF GND WAKE OTP_ZAP LIN Micro controller EN WAKE STB TEST GND GND GND LIN 220pF TxD WAKE OTP_ZAP Slave Node VCC VCC RxD INH 10nF WAKE NCV7420 1kW 1 nF LIN VBB VCC VCC 10uF 10uF 100nF VBAT RxD INH LIN Master Node NCV7420 10uF 100nF VBAT GND TxD EN Micro controller STB TEST GND KL30 LIN−BUS KL31 Figure 2. Typical Application Diagram Table 4. PIN DESCRIPTION Pin Name Description 1 VBB Battery supply input 2 LIN LIN bus output/input 3 GND Ground 4 GND Ground 5 WAKE 6 INH 7 OTP_ZAP 8 TEST 9 EN Enable input, transceiver in normal operation mode when high 10 STB Standby mode control input 11 GND Ground 12 TxD Transmit data input, low in dominant state 13 RxD Receive data output; low in dominant state; push−pull output 14 Vcc Supply voltage (output) High voltage digital input pin to switch the part from sleep− to standby mode Inhibit output Supply for programming of trimming bits at factory testing, should be grounded in the application Digital input for factory testing, should be grounded in the application Overall Functional Description with EMC performance due to reduced slew rate of the LIN output. The junction temperature is monitored via a thermal shutdown circuit that switches the LIN transmitter and voltage regulator off when temperature exceeds the TSD trigger level. NCV7420 has four operating states (normal mode, low slope mode, stand−by mode, and sleep mode) that are determined by the input signals EN, WAKE, STB, and TxD. LIN is a serial communication protocol that efficiently supports the control of mechatronic nodes in distributed automotive applications. The domain is class−A multiplex buses with a single master node and a set of slave nodes. NCV7420 is designed as a master or slave node for the LIN communication interface with an integrated 3.3 V or 5 V voltage regulator having a current capability up to 50 mA for supplying any external components (microcontroller). NCV7420 contains the LIN transmitter, LIN receiver, voltage regulator, power−on−reset (POR) circuits and thermal shutdown (TSD). The LIN transmitter is optimized for the maximum specified transmission speed of 20 kBaud Operating States NCV7420 provides four operating states, two modes for normal operation with communication, one stand-by without communication and one low power mode with very low current consumption. See Figure 3. http://onsemi.com 4 NCV7420 Normal mode (normal slope) −Vcc: “on” −LIN TX: “on” −Term: 30 kW −INH: “high”/“floating” −RxD: LIN Data (push−pull) EN goes from 1 to 0 EN goes from 1 to 0 Note: LIN Transmitter is “off” when Vbb < Vbb_UV_th EN goes from 1 to 0 while STB = 1 or Vbb < Vbb_UV_th while STB = 1 or Vbb < Vbb_UV_th EN goes from 0 to 1 while TxD = 0, −Vcc: “on” −LIN TX: “off” −Term: “current source” −INH: “floating” −RxD: pull−up to Vcc/low and Vcc > Vcc_UV_th, Vbb > Vbb_UV_th from any mode Vbb < PORL_Vbb Power off and Vcc > Vcc_UV_th and Vbb > Vbb_UV_th Local wake−up or LIN wake−up Normal mode (low slope) while STB = 0 and Vbb > Vbb_UV_th EN goes from 0 to 1 while TxD = 1, Stand−by mode Power up Vbb Vbb > Vbb_UV_th Sleep mode −Vcc: “on” −LIN TX: “on” −Term: 30 kW −INH: “high”/“floating” −RxD: LIN data (push−pull) EN goes from 1 to 0 while STB = 0 and Vbb > Vbb_UV_th −Vcc: “off” −LIN TX: “off” −Term: “current source” −INH: “floating” −RxD: pull−up to Vcc Figure 3. State Diagram Table 5. MODE SELECTION Mode Vcc RxD INH LIN 30 kW on LIN Note Normal − Slope ON Low = Dominant State High = Recessive State High if STB=High during state transition; Floating otherwise Normal Slope ON (Note 5) Normal − Low Slope ON Low = Dominant State High = Recessive State High if STB=High during state transition; Floating otherwise Low Slope ON (Note 6) Stand−by ON Low after LIN wakeup, high otherwise Floating OFF OFF (Notes 7 and 8) Sleep OFF Clamped to Vcc Floating OFF OFF 5. The normal slope mode is entered when pin EN goes HIGH while TxD is in HIGH state during EN transition. 6. The low slope mode is entered when pin EN goes HIGH while TxD is in LOW state during EN transition. LIN transmitter gets on only after TxD returns to high after the state transition. 7. The stand−by mode is entered automatically after power−up. 8. In Stand−by mode, RxD High state is achieved by internal pull-up resistor to VCC. Normal Slope Mode HIGH. If STB pin is high during the standby-to-normal slope mode transition, INH pin is pulled high. Otherwise, it stays floating. In normal slope mode the transceiver can transmit and receive data via LIN bus with speed up to 20 kBaud. 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 30 kW pull-up resistor. For master applications it is needed to put an external 1 kW resistor with a serial diode between LIN and Vbb (or INH). See Figure 2. The mode selection is done by EN=HIGH when TxD pin is Low Slope Mode In low slope mode the slew rate of the signal on the LIN bus is reduced (rising and falling edges of the LIN bus signal are longer). This further reduces the EMC emission. As a consequence the maximum speed on the LIN bus is reduced up to 10 kBaud. This mode is suited for applications where the communication speed is not critical. The mode selection is done by EN=HIGH when TxD pin is LOW. In order not to transmit immediately a dominant state on the bus (because http://onsemi.com 5 NCV7420 Sleep Mode TxD=LOW), the LIN transmitter is enabled only after TxD returns to HIGH. If STB pin is high during the standby−to−low slope mode transition, INH pin is pulled high. Otherwise, it stays floating. The Sleep Mode provides extreme low current consumption. This mode is entered when both EN and STB pins are LOW coming from normal mode. The internal termination resistor of 30 kW between LIN and Vbb is disconnected and also the Vcc regulator is switched off to minimize current consumption. Stand−by Mode The stand−by mode is always entered after power−up of the NCV7420. It can also be entered from normal mode when the EN pin is low and the stand−by pin is high. From sleep mode it can be entered after a local wake−up or LIN wakeup. In stand−by mode the Vcc voltage regulator for supplying external components (e.g. a microcontroller) stays active. Also 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 Vbb is disconnected in order to minimize current consumption. Only a pull−up current source between Vbb and LIN is active. Detection of Local Wake−Up Wake Wake−up NCV7420 has two possibilities to wake−up from sleep or stand−by mode (see Figure 3): • Local wake−up: enables the transition from sleep mode to stand−by mode • Remote wake−up via LIN: enables the transition from sleep− to stand−by mode and can be also detected when already in standby mode. A local wake−up is only detected in sleep mode if a transition from LOW to HIGH or from HIGH to LOW is seen on the wake pin. Detection of Local Wake−Up Wake VBB VBB 50% VBB typ. Sleep Mode Stand−by Mode 50% VBB typ. t Sleep Mode t Stand−by Mode Figure 4. Local Wake−up Signal A remote wake−up is only detected if a combination of (1) a falling edge at the LIN pin (transition from recessive to dominant) is followed by (2) a dominant level maintained for a time period > tWAKE and (3) again a rising edge at pin LIN (transition from dominant to recessive) happens. LIN Detection of Remote Wake−Up VBB LIN recessive level tWAKE 60% Vbb 40% Vbb LIN dominant level Sleep Mode Stand−by Mode t Figure 5. Remote Wake−up Behavior • RxD is kept LOW until normal mode is entered after a The wake−up source is distinguished by pin RxD in the stand−by mode: • RxD remains HIGH after power−up or local wake−up. remote wake−up (LIN). http://onsemi.com 6 NCV7420 Vbb_UV_th PORL_Vbb VBB VCC Power off Stand−by Normal normal slope Normal low slope Stand−by Sleep EN STB TxD Wake−up (Local or LIN) Figure 6. Operating Modes Transitions http://onsemi.com 7 Stand−by Power off NCV7420 Electrical Characteristics Definitions All voltages are referenced to GND (Pin 11). Positive currents flow into the IC. Table 6. ABSOLUTE MAXIMUM RATINGS – 3.3 V and 5 V versions Symbol Parameter Min Max Unit Vbb Battery voltage on pin Vbb (Note 9) −0.3 +45 V Vcc DC voltage on pin Vcc 0 +7 V I_Vcc Current delivered by the Vcc regulator 50 V_LIN LIN bus voltage (Note 10) −45 +45 V V_INH DC voltage on inhibit pin −0.3 Vbb + 0.3 V V_WAKE DC voltage on WAKE pin −45 45 V V_Dig_in mA DC input voltage on pins TxD, RxD, EN, STB −0.3 Vcc + 0.3 V Tjunc Maximum junction temperature −40 +165 °C Vesd Electrostatic discharge voltage on all pins; HBM (Note 11) −2 +2 kV Electrostatic discharge voltage on LIN, INH, WAKE and Vbb towards GND; HBM (Note 11) −4 +4 kV Electrostatic discharge on LIN, WAKE and Vbb; system HBM (Note 12) −8 +8 kV Electrostatic discharge voltage on all pins; CDM (Note 14) −500 +500 V Electrostatic discharge voltage on all pins; HBM (Note 11) −4 +4 kV Electrostatic discharge voltage on LIN, INH, WAKE and Vbb towards GND; HBM (Note 11) −6 +6 kV Electrostatic discharge on LIN, WAKE and Vbb; system HBM (Note 13) −12 +12 kV Electrostatic discharge voltage on all pins; CDM (Note 14) −750 +750 V Vesd (EMC/ESD improved versions) Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. 9. The applied transients shall be in accordance with ISO 7637 part 1, test pulses 1, 2, 3a, 3b, and 5. The device complies with functional class C; class A can be reached depending on the application and external components. 10. The applied transients shall be in accordance with ISO 7637 part 1, test pulses 1, 2, 3a, and 3b. The device complies with functional class C; class A can be reached depending on the application and external components. 11. Equivalent to discharging a 100 pF capacitor through a 1500 W resistor. 12. Equivalent to discharging a 150 pF capacitor through a 330 W resistor conform to IEC Standard 61000−4−2. LIN bus filter 220 pF, Vbb blocking capacitor 100 nF, 3k3/10n R/C network on WAKE. 13. Equivalent to discharging a 150 pF capacitor through a 330 W resistor conform to IEC Standard 61000−4−2. No filter on LIN, Vbb blocking capacitor 100 nF, 3k3/10n R/C network on WAKE. 14. Charged device model according ESD-STM5.3.1. http://onsemi.com 8 NCV7420 DC Characteristics – 3.3 V version (VBB = 5 V to 26 V; Tjunc = −40°C to +150°C; unless otherwise specified.) Table 7. DC CHARACTERISTICS, SUPPLY − Pin VBB Symbol Max Unit Ibb_ON Supply current Parameter Normal mode; LIN recessive Conditions Min Typ 1.6 mA Ibb_STB Supply current Stand−by mode, Vbb = 5–18 V, Tjunc < 105°C 70 mA Ibb_SLP Supply current Sleep mode, Vbb = 5–18 V, Tjunc < 105°C 20 mA V Table 8. DC CHARACTERISTICS, VOLTAGE REGULATOR − Pin VCC Vcc_out Iout_max_abs Iout_lim DVcc_out Vdo Regulator output voltage Absolute maximum output current Vcc load 1 mA − 30 mA 3.23 3.30 3.37 Vcc load 0 mA − 50 mA 3.19 3.30 3.41 Thermal shutdown must be taken into account Over−current limitation 50 100 50 mA 170 mA Line Regulation (Note 20) Vbb 5−26 V, Iout = 5 mA, Tj = 25°C 0.5 mV Load Regulation (Note 20) Iout 1−50 mA, Vbb = 14 V, Tj = 25°C 45 mV Iout = 1 mA, Tj = 25°C 13 mV Iout = 10 mA, Tj = 25°C 134 mV Iout = 50 mA, Tj = 25°C 732 mV Dropout Voltage (Vbb−Vcc_out) Figure 11, (Notes 19, 20) Table 9. DC CHARACTERISTICS LIN TRANSMITTER − Pin LIN Symbol Parameter Conditions VLin_dom_LoSup LIN dominant output voltage TXD = low; Vbb = 7.3 V VLin_dom_HiSup LIN dominant output voltage TXD = low; Vbb = 18 V Vser_diode ILIN_lim Rslave CLIN LIN Voltage drop at serial diode (Note 15) Min Typ Max Unit 1.2 V 2.0 V TXD = high; Ilin = 10 mA 0.3 1 V VLin = Vbb_max 40 200 mA 33 47 kW 15 25 pF Short circuit current limitation Internal pull−up resistance 20 Capacitance on pin LIN (Note 17) ILIN_off_dom LIN output current bus in dominant state Driver off; Vbb = 12 V ILIN_off_rec LIN output current bus in recessive state Driver off; Vbb < 18 V Vbb < VLin < 18 V ILIN_no_GND Communication not affected Vbb = GND = 12 V; 0 < VLin < 18 V ILIN_no_Vbb LIN bus remains operational Vbb = GND = 0 V; 0 < VLin < 18 V −1 mA −1 1 mA 1 mA 5 mA Max Unit 0.4 Vbb Table 10. DC CHARACTERISTICS LIN RECEIVER − Pin LIN Symbol Parameter Conditions Min Typ Vbus_dom Bus voltage for dominant state Vbus_rec Bus voltage for recessive state Vrec_dom Receiver threshold LIN bus recessive → dominant 0.4 0.6 Vbb Vrec_rec Receiver threshold LIN bus dominant → recessive 0.4 0.6 Vbb 0.6 Vbb 15. The voltage drop in Normal mode between LIN and VBB 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. 16. By one of the trimming bits, following reconfiguration can be done during chip−level testing in order to fit the NCV7420_3 into different interface: pins TxD and EN will have typ. 10 kW pull−down resistor to ground and pin WAKE will have typ. 10 mA pull−up current source. 17. Guaranteed by design. Not tested. 18. Vbb under−voltage threshold is always higher than Vbb POR low level (Vbb_UV_th > PORL_VBB) 19. Measured at output voltage Vcc_out = (Vcc_out@Vbb = 5 V) – 2%. 20. Values based on design and characterization. Not tested in production. http://onsemi.com 9 NCV7420 DC Characteristics – 3.3 V version (VBB = 5 V to 26 V; Tjunc = −40°C to +150°C; unless otherwise specified.) Table 10. DC CHARACTERISTICS LIN RECEIVER − Pin LIN Symbol Parameter Vrec_cnt Receiver centre voltage Vrec_hys Receiver hysteresis Conditions Min Max Unit (Vbus_dom + Vbus_rec) / 2 0.475 Typ 0.525 Vbb 0.05 0.175 Vbb Max Unit 0.65 Vbb 1 mA 54 ms 0.8 V Table 11. DC CHARACTERISTICS I/Os Symbol Parameter Conditions Min Typ Pin WAKE V_wake_th I_leak T_wake_min Threshold voltage 0.35 Input leakage current (Note 16) Vwake = 0 V; Vbb = 18 V −1 Sleep mode; rising and falling edge 8 Debounce time −0.5 Pins TxD and STB Vil Low level input voltage Vih High level input voltage 2.0 Rpu Pull−up resistance to Vcc (Note 16) 50 V 200 kW 0.75 V 1 mA 0.8 V Pin INH Delta_VH I_leak High level voltage drop IINH = 15 mA Leakage current Sleep mode; VINH = 0 V 0.35 −1 Pin EN Vil Low level input voltage Vih High level input voltage 2.0 Rpd Pull−down resistance to ground (Note 16) 50 V 200 kW 0.65 V Pin RxD Vol Low level output voltage Isink = 2 mA Voh High level output voltage (In Normal mode) Normal mode, Isource = −2 mA Vcc − 0.65 V Rpu Pull−up resistance to Vcc (In Standby and Sleep mode) Standby mode, Sleep mode 5 10 15 kW Conditions Min Typ Max Unit 3 4.2 4.75 V V Table 12. DC CHARACTERISTICS Symbol Parameter POR Vbb_UV_th Vbb under-voltage threshold (Note 18) PORL_Vbb Vbb POR low level comparator VCC_UV_th NCV7420D23 2.5 4.2 V NCV7420D24 1.7 3.8 V 2 3 V 165 195 °C 9 18 °C VCC under-voltage threshold TSD Tj Tj_hyst Junction temperature For shutdown Thermal shutdown hysteresis 15. The voltage drop in Normal mode between LIN and VBB 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. 16. By one of the trimming bits, following reconfiguration can be done during chip−level testing in order to fit the NCV7420_3 into different interface: pins TxD and EN will have typ. 10 kW pull−down resistor to ground and pin WAKE will have typ. 10 mA pull−up current source. 17. Guaranteed by design. Not tested. 18. Vbb under−voltage threshold is always higher than Vbb POR low level (Vbb_UV_th > PORL_VBB) 19. Measured at output voltage Vcc_out = (Vcc_out@Vbb = 5 V) – 2%. 20. Values based on design and characterization. Not tested in production. http://onsemi.com 10 NCV7420 DC Characteristics – 5 V version − (VBB = 6 V to 26 V; Tjunc = −40°C to +150°C; unless otherwise specified.) Table 13. DC CHARACTERISTICS, SUPPLY − Pin VBB Symbol Max Unit Ibb_ON Supply current Parameter Normal mode; LIN recessive Conditions Min Typ 1.6 mA Ibb_STB Supply current Stand−by mode, Vbb = 6–18 V, Tjunc < 105°C 70 mA Ibb_SLP Supply current Sleep mode, Vbb = 6–18 V, Tjunc < 105°C 20 mA V Table 14. DC CHARACTERISTICS, VOLTAGE REGULATOR − Pin VCC Vcc_out Iout_max_abs Iout_lim DVcc_out Vdo Regulator output voltage Absolute maximum output current Vcc load 1 mA − 30 mA 4.9 5.0 5.1 Vcc load 0 mA − 50 mA 4.83 5.0 5.17 Thermal shutdown must be taken into account Over−current limitation 50 100 50 mA 170 mA Line Regulation (Note 26) Vbb 6−26 V, Iout = 5 mA, Tj = 25°C 0.9 mV Load Regulation (Note 26) Iout 1−50 mA, Vbb = 14 V, Tj = 25°C 74 mV Iout = 1 mA, Tj = 25°C 13 mV Iout = 10 mA, Tj = 25°C 136 mV Iout = 50 mA, Tj = 25°C 794 mV Dropout Voltage (Vbb−Vcc_out) Figure 19 (Notes 25, 26) Table 15. DC CHARACTERISTICS LIN TRANSMITTER − Pin LIN Symbol Parameter Conditions Min Typ Max Unit VLin_dom_LoSup LIN dominant output voltage TXD = low; Vbb = 7.3 V 1.2 V VLin_dom_HiSup LIN dominant output voltage TXD = low; Vbb = 18 V 2.0 V LIN Voltage drop at serial diode (Note 21) TXD = high; Ilin = 10 mA 0.3 1 V VLin = Vbb_max 40 200 mA 33 47 kW 15 25 pF Vser_diode ILIN_lim Rslave CLIN Short circuit current limitation Internal pull−up resistance 20 Capacitance on pin LIN (Note 23) ILIN_off_dom LIN output current bus in dominant state Driver off; Vbb = 12 V ILIN_off_rec LIN output current bus in recessive state Driver off; Vbb < 18 V Vbb < VLin < 18 V ILIN_no_GND Communication not affected Vbb = GND = 12 V; 0 < VLin < 18 V ILIN_no_Vbb LIN bus remains operational Vbb = GND = 0 V; 0 < VLin < 18 V −1 mA −1 1 mA 1 mA 5 mA Max Unit 0.4 Vbb Table 16. DC CHARACTERISTICS LIN RECEIVER − Pin LIN Symbol Parameter Vbus_dom Bus voltage for dominant state Vbus_rec Bus voltage for recessive state Vrec_dom Receiver threshold Conditions Min Typ 0.6 LIN bus recessive → dominant 0.4 Vbb 0.6 Vbb 21. The voltage drop in Normal mode between LIN and VBB 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. 22. By one of the trimming bits, following reconfiguration can be done during chip−level testing in order to fit the NCV7420_5 into different interface: pins TxD and EN will have typ. 10 kW pull−down resistor to ground and pin WAKE will have typ. 10 mA pull−up current source. 23. Guaranteed by design. Not tested. 24. Vbb under−voltage threshold is always higher than Vbb POR low level (Vbb_UV_th > PORL_VBB) 25. Measured at output voltage Vcc_out = (Vcc_out@Vbb = 6 V) – 2%. 26. Values based on design and characterization. Not tested in production. http://onsemi.com 11 NCV7420 DC Characteristics – 5 V version − (VBB = 6 V to 26 V; Tjunc = −40°C to +150°C; unless otherwise specified.) Symbol Parameter Conditions Min LIN bus dominant → recessive (Vbus_dom + Vbus_rec) / 2 Typ Max Unit 0.4 0.6 Vbb 0.475 0.525 Vbb 0.05 0.175 Vbb Max Unit 0.65 Vbb 1 mA 54 ms 0.8 V Table 16. DC CHARACTERISTICS LIN RECEIVER − Pin LIN Vrec_rec Receiver threshold Vrec_cnt Receiver center voltage Vrec_hys Receiver hysteresis Table 17. DC CHARACTERISTICS I/OS Symbol Parameter Conditions Min Typ Pin WAKE V_wake_th I_leak T_wake_min Threshold voltage 0.35 Input leakage current (Note 22) Vwake = 0 V; Vbb = 18 V −1 Sleep mode; rising and falling edge 8 Debounce time −0.5 Pins TxD and STB Vil Low level input voltage Vih High level input voltage 2.0 Rpu Pull−up resistance to Vcc (Note 22) 50 V 200 kW 0.75 V 1 mA 0.8 V Pin INH Delta_VH I_leak High level voltage drop IINH = 15 mA Leakage current Sleep mode; VINH = 0 V 0.35 −1 Pin EN Vil Low level input voltage Vih High level input voltage 2.0 Rpd Pull−down resistance to ground (Note 22) 50 V 200 kW 0.65 V Pin RxD Vol Low level output voltage Isink = 2 mA Voh High level output voltage (In Normal mode) Normal mode, Isource = −2 mA Vcc − 0.65 V Rpu Pull−up resistance to Vcc (In Standby and Sleep mode) Standby mode, Sleep mode 5 10 15 kW Conditions Min Typ Max Unit 3 4.2 4.75 V V Table 18. DC CHARACTERISTICS Symbol Parameter POR Vbb_UV_th Vbb under-voltage threshold (Note 24) PORL_Vbb Vbb POR low level comparator VCC_UV_th NCV7420D25 2.5 4.2 V NCV7420D26 1.7 3.8 V 3 4.5 V 165 195 °C 9 18 °C VCC under-voltage threshold TSD Tj Tj_hyst Junction temperature For shutdown Thermal shutdown hysteresis 21. The voltage drop in Normal mode between LIN and VBB 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. 22. By one of the trimming bits, following reconfiguration can be done during chip−level testing in order to fit the NCV7420_5 into different interface: pins TxD and EN will have typ. 10 kW pull−down resistor to ground and pin WAKE will have typ. 10 mA pull−up current source. 23. Guaranteed by design. Not tested. 24. Vbb under−voltage threshold is always higher than Vbb POR low level (Vbb_UV_th > PORL_VBB) 25. Measured at output voltage Vcc_out = (Vcc_out@Vbb = 6 V) – 2%. 26. Values based on design and characterization. Not tested in production. http://onsemi.com 12 NCV7420 AC Characteristics – 3.3 V and 5 V versions − (VBB = 7 V to 18 V; Tjunc = −40°C to +150°C; unless otherwise specified.) Table 19. AC CHARACTERISTICS LIN TRANSMITTER − Pin LIN Symbol Conditions Min D1 Duty Cycle 1 = tBUS_REC(min) / (2 x TBIT) see Figure 23 Parameter Normal slope mode THREC(max) = 0.744 x VBB THDOM(max) = 0.581 x VBB TBIT = 50 ms V(VBB) = 7 V to 18 V 0.396 Typ Max 0.5 D2 Duty Cycle 2 = tBUS_REC(max) / (2 x TBIT) see Figure 23 Normal slope mode THREC(min) = 0.422 x VBB THDOM(min) = 0.284 x VBB TBIT = 50 ms V(VBB) = 7.6 V to 18 V 0.5 0.581 D3 Duty Cycle 3 = tBUS_REC(min) / (2 x TBIT) see Figure 23 Normal slope mode THREC(max) = 0.778 x VBB THDOM(max) = 0.616 x VBB TBIT = 96 ms V(VBB) = 7 V to 18 V 0.417 0.5 D4 Duty Cycle 4 = tBUS_REC(max) / (2 x TBIT) see Figure 23 Normal slope mode THREC(min) = 0.389 x VBB THDOM(min) = 0.251 x VBB TBIT = 96 ms V(VBB) = 7.6 V to 18 V 0.5 0.590 Unit Ttrx_prop_down Propagation Delay of TxD to LIN. TxD high to low (Note 27) 6 ms Ttrx_prop_up Propagation Delay of TxD to LIN. TxD low to high (Note 27) 6 ms T_fall_norm LIN falling edge Normal slope mode; VBB = 12 V; L1, L2 (Note 28) 22.5 ms T_rise_norm LIN rising edge Normal slope mode; VBB = 12 V; L1, L2 (Note 28) 22.5 ms T_sym_norm LIN slope symmetry Normal slope mode; VBB = 12 V; L1, L2 (Note 28) 4 ms T_fall_norm LIN falling edge Normal slope mode; VBB = 12 V; L3 (Note 28) 27 ms T_rise_norm LIN rising edge Normal slope mode; VBB = 12 V; L3 (Note 28) 27 ms T_sym_norm LIN slope symmetry Normal slope mode; VBB = 12 V; L3 (Note 28) 5 ms −4 −5 T_fall_low LIN falling edge Low slope mode (Note 29); VBB = 12 V; L3 (Note 28) 62 ms T_rise_low LIN rising edge Low slope mode (Note 29); VBB = 12 V; L3 (Note 28) 62 ms 30 150 ms 6 20 ms T_wake Dominant time−out for wake−up via LIN bus T_dom TxD dominant time−out TxD = low 27. Values based on design and characterization. Not tested in production. 28. The AC parameters are specified for following RC loads on the LIN bus: L1 = 1 kW / 1 nF; L2 = 660 W / 6.8 nF; L3 = 500 W / 10 nF. 29. Low slope mode is not compliant to the LIN standard. http://onsemi.com 13 NCV7420 REGULATOR TYPICAL PERFORMANCE CHARACTERISTICS − 3.3 V VERSION Load Transient Responses 50 trise, tfall = 10 ms 0.1 VBB = 14 V CVBB = 10 mF + 100 nF CVCC = 10 mF X7R DVCC (20 mV/DIV) LOAD CURRENT (mA) LOAD CURRENT (mA) DVCC (20 mV/DIV) VBB = 14 V CVBB = 10 mF + 100 nF CVCC = 10 mF X7R 50 1 trise, tfall = 10 ms TIME (500 ms/DIV) TIME (500 ms/DIV) Figure 7. Load Transient Response (Icc 100 mA to 50 mA) Figure 8. Load Transient Response (Icc 1 mA to 50 mA) 30 20 10 ICC = 5 mA CVCC = 10 mF DVCC (50 mV/DIV) ICC = 100 mA CVCC = 10 mF trise, tfall = 10 ms 0 INPUT VOLTAGE (V) INPUT VOLTAGE (V) DVCC (20 mV/DIV) Line Transient Responses 30 20 10 trise, tfall = 10 ms 0 TIME (2 ms/DIV) TIME (1 ms/DIV) Figure 9. Line Transient Response (Vbb 5 V to 26 V) Figure 10. Line Transient Response (Vbb 5 V to 26 V) http://onsemi.com 14 NCV7420 REGULATOR TYPICAL PERFORMANCE CHARACTERISTICS − 3.3 V VERSION Static Characteristics 1.4 50 mA 1.0 0.8 0.6 25 mA (PORL_VBB reached at low temperatures) 0.4 10 mA 0.2 0 −50 200 −25 0 25 50 75 100 125 140 120 −40°C 3.28 25°C 3.27 3.26 85°C 135°C 3.25 0 5 10 15 20 25 30 35 150°C 40 45 50 Figure 11. Dropout Voltage vs. Temperature Figure 12. Output Voltage vs. Output Current 3.32 80 60 40 20 0 3.29 ICC OUTPUT CURRENT (mA) 100 0 3.30 TEMPERATURE (°C) VCC OUTPUT VOLTAGE (V) 160 VBB = 14 V CVBB = 10 mF + 100 nF CVCC = 10 mF X7R 3.31 3.24 150 VBB = 14 V CVBB = 10 mF + 100 nF CVCC = 10 mF X7R Standby Mode T = 25°C 180 IBB−ICC (mA) VCC OUTPUT VOLTAGE (V) 1.2 DROPOUT VOLTAGE (V) 3.32 CVCC = 10 mF X7R 5 10 15 20 25 30 35 40 45 10 mA 3.30 3.29 25 mA 3.28 3.27 3.26 3.25 3.24 −50 50 1 mA 3.31 50 mA VBB = 14 V CVBB = 10 mF + 100 nF CVCC = 10 mF X7R −25 0 25 50 75 100 125 ICC OUTPUT CURRENT (mA) TEMPERATURE (°C) Figure 13. Ground Current vs. Output Current Figure 14. Output Voltage vs. Temperature http://onsemi.com 15 150 NCV7420 REGULATOR TYPICAL PERFORMANCE CHARACTERISTICS − 5 V VERSION Load Transient Responses 50 trise, tfall = 10 ms 0.1 VBB = 14 V CVBB = 10 mF + 100 nF CVCC = 10 mF X7R DVCC (50 mV/DIV) LOAD CURRENT (mA) LOAD CURRENT (mA) DVCC (50 mV/DIV) VBB = 14 V CVBB = 10 mF + 100 nF CVCC = 10 mF X7R 50 1 trise, tfall = 10 ms TIME (500 ms/DIV) TIME (500 ms/DIV) Figure 15. Load Transient Response (Icc 100 mA to 50 mA) Figure 16. Load Transient Response (Icc 1 mA to 50 mA) Line Transient Responses 20 10 ICC = 5 mA CVCC = 10 mF DVCC (50 mV/DIV) 30 trise, tfall = 10 ms 0 INPUT VOLTAGE (V) INPUT VOLTAGE (V) DVCC (20 mV/DIV) ICC = 100 mA CVCC = 10 mF 30 20 10 trise, tfall = 10 ms 0 TIME (2 ms/DIV) TIME (1 ms/DIV) Figure 17. Line Transient Response (Vbb 6 V to 26 V) Figure 18. Line Transient Response (Vbb 6 V to 26 V) http://onsemi.com 16 NCV7420 REGULATOR TYPICAL PERFORMANCE CHARACTERISTICS − 5 V VERSION Static Characteristics 1.2 DROPOUT VOLTAGE (V) 5.03 CVCC = 10 mF X7R 50 mA 1.0 0.8 0.6 25 mA 0.4 10 mA 0.2 0 −50 200 0 25 50 75 100 125 140 120 4.99 4.98 4.97 4.96 25°C 85°C 4.95 135°C 0 5 10 15 20 25 30 150°C 35 40 50 Figure 19. Dropout Voltage vs. Temperature Figure 20. Output Voltage vs. Output Current 5.03 1 mA 5.02 80 60 40 5.01 10 mA 5.00 4.99 25 mA 4.98 VBB = 14 V CVBB = 10 mF + 100 nF CVCC = 10 mF X7R 4.97 4.96 4.95 4.94 20 0 45 ICC OUTPUT CURRENT (mA) 100 0 5.00 −40°C TEMPERATURE (°C) VCC OUTPUT VOLTAGE (V) 160 5.01 4.94 4.93 150 VBB = 14 V CVBB = 10 mF + 100 nF CVCC = 10 mF X7R Standby Mode T = 25°C 180 IBB−ICC (mA) −25 VBB = 14 V CVBB = 10 mF + 100 nF CVCC = 10 mF X7R 5.02 VCC OUTPUT VOLTAGE (V) 1.4 5 10 15 20 25 30 35 40 45 4.93 −50 50 50 mA −25 0 25 50 75 100 125 ICC OUTPUT CURRENT (mA) TEMPERATURE (°C) Figure 21. Ground Current vs. Output Current Figure 22. Output Voltage vs. Temperature http://onsemi.com 17 150 NCV7420 TxD tBIT tBIT 50% t tBUS_dom(max) LIN tBUS_rec(min) THRec(max) THDom(max) Thresholds of receiving node 1 THRec(min) THDom(min) Thresholds of receiving node 2 t tBUS_dom(min) tBUS_rec(max) Figure 23. LIN Transmitter Duty Cycle t BIT TxD t BIT 50% t LIN Vbb 60% Vbb 40% Vbb t ttrx_prop_down ttrx_prop_up Figure 24. LIN Transmitter Timing LIN 100% 60% 60% 40% 40% 0% T_fall T_rise Figure 25. LIN Transmitter Rising and Falling Times http://onsemi.com 18 t NCV7420 Table 20. AC CHARACTERISTICS LIN RECEIVER Symbol Pin LIN Parameter Conditions Trec_prop_down Propagation delay of receiver falling edge Trec_prop_up Propagation delay of receiver rising edge Trec_sym Propagation delay symmetry Min Trec_prop_down − Trec_prop_up Typ Max Unit 0.1 6 ms 0.1 6 ms −2 2 ms LIN Vbb 60% Vbb 40% Vbb t RxD trec_prop_down trec_prop_up 50% t Figure 26. LIN Receiver Timing ORDERING INFORMATION Container Qty Temperature Range Description Package Shipping† NCV7420D23G LIN Transceiver + 3.3 V Vreg. SOIC 150 14 GREEN (JEDEC MS−012) Tube/Rail 55 −40°C to 125°C NCV7420D23R2G LIN Transceiver + 3.3 V Vreg. SOIC 150 14 GREEN (JEDEC MS−012) Tape & Reel 3000 −40°C to 125°C NCV7420D24G EMC/ESD Improved LIN Transceiver + 3.3 V Vreg. SOIC 150 14 GREEN (JEDEC MS−012) Tube/Rail 55 −40°C to 125°C NCV7420D24R2G EMC/ESD Improved LIN Transceiver + 3.3 V Vreg. SOIC 150 14 GREEN (JEDEC MS−012) Tape & Reel 3000 −40°C to 125°C NCV7420D25G LIN Transceiver + 5 V Vreg. SOIC 150 14 GREEN (JEDEC MS−012) Tube/Rail 55 −40°C to 125°C NCV7420D25R2G LIN Transceiver + 5 V Vreg. SOIC 150 14 GREEN (JEDEC MS−012) Tape & Reel 3000 −40°C to 125°C NCV7420D26G EMC/ESD Improved LIN Transceiver + 5 V Vreg. SOIC 150 14 GREEN (JEDEC MS−012) Tube/Rail 55 −40°C to 125°C NCV7420D26R2G EMC/ESD Improved LIN Transceiver + 5 V Vreg. SOIC 150 14 GREEN (JEDEC MS−012) Tape & Reel 3000 −40°C to 125°C Part Number †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. http://onsemi.com 19 NCV7420 PACKAGE DIMENSIONS SOIC 14 CASE 751AP−01 ISSUE A http://onsemi.com 20 NCV7420 ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. 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