ncv8614b ON Semiconductor, ncv8614b Datasheet
ncv8614b
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ncv8614b Summary of contents
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... The NCV8614B is intended to supply power to various “always on” loads such as the CAN transceivers and microcontrollers (core, memory and IO). The NCV8614B has three output voltages, a reset / delay circuit, and a host of control features suitable for the automotive radio and instrument cluster systems. ...
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... REF V REF Switchover RST2 OVS V TH1 VIN_MON Fault Logic V TH2 V REF V TSD PP TSD HV_DET 9 13 GND GND Value MBRS2H100T3G ON Semiconductor MBR0502T1 ON Semiconductor MMDL914T1 ON Semiconductor http://onsemi.com OUT3 19 I LIMIT V V RFB3 OUT3 V REF OUT2 18 I LIMIT V RFB2 V RTH V OUT1 17 ...
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PIN FUNCTION DESCRIPTIONS Pin No. Symbol 1 ASO_RAIL Output/Input of the automatic switchover (ASO) circuitry. Place ceramic capacitor on this pin to provide local bypassing to the LDO linear regulator pass devices. 2 VIN−B Primary power supply ...
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... Operating Junction Temperature Range Maximum Storage Temperature Range Moisture Sensitivity Level 1. Values based on measurement of NCV8614B assembled on 2−layer 1−oz Cu thickness PCB with Copper Area of more than 645 mm several thermal vias for improved thermal performance. Refer to CIRCUIT DESCRIPTION section for safe operating area. ATTRIBUTES ...
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SUPPLY VOLTAGES AND SYSTEM SPECIFICATION ELECTRICAL CHARACTERISTICS = VIN−B w ASO_RAIL 3.3 V, VIN_S3 tied to ASO_RAIL, VBATT_MON = 0 V, IGNIN = Minimum/Maximum values are valid for the temperature range −40° ...
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SUPPLY VOLTAGES AND SYSTEM SPECIFICATION ELECTRICAL CHARACTERISTICS = VIN−B w ASO_RAIL 3.3 V, VIN_S3 tied to ASO_RAIL, VBATT_MON = 0 V, IGNIN = Minimum/Maximum values are valid for the temperature range −40° ...
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ELECTRICAL CHARACTERISTICS (7 V < ASO_RAIL < VIN−H = VIN−B w ASO_RAIL, V ASO_RAIL, VBATT_MON = 0 V, IGNIN = 150 °C unless noted otherwise. Min/Max values are guaranteed by test, design or statistical correlation. ...
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... Refer to CIRCUIT DESCRIPTION Section for Stability Consideration 10. For other voltage versions refer to Typical Performance Characteristics Section. ORDERING INFORMATION Device NCV8614BMNR2G No Enable, LDO2 Reset monitor, Adjustable LDO3 (7 V < ASO_RAIL < VIN−H = VIN−B w ASO_RAIL (Note 6)) Min/Max values are valid for the temperature range −40°C vT ...
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... VBATT 8V HV_DET BO_DET NC HOT_FLG Ignition Power Amplifier SYS_EN HS_EN VBATT 8V DVD ROM Drive VBATT 8.5V AM/FM Tuner VBATT Figure 2. Automotive Radio System Block Diagram Example NCV8614B with NCV8855 ASO_RAIL 8V 1 VIN_S3 20 VOUT3 19 VIN-B 2 VOUT3 FB VIN-H 4 VOUT2 VIN VPP VBATT_MON 5 HV_DET 6 VOUT1 17 BO_DET ...
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... VIN−B or VIN−H must be greater than 4.5 V regardless of the voltage on the VIN−A pin. Internal Soft−Start The NCV8614B is equipped with an internal soft−start function. This function is included to limit inrush currents and overshoot of output voltages. The soft−start function is listed as a applies to all 3 regulators. The soft− ...
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... OUT3 Actual limits are shown in graphs in the Typical Performance Characteristics section. Thermal As power in the NCV8614B increases, it might become ) and drives the gate necessary to provide some thermal relief. The maximum power dissipation supported by the device is dependent upon board design and layout. Mounting pad configuration on the PCB, the board material, and the ambient temperature affect the rate of junction temperature rise for the part ...
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... V to 17.8 V. The HV_DET signal will reassert high once the HV_DET signal crosses the HV_DET threshold going low. The NCV8614B is also equipped with a Hot Flag pin which indicates when the junction temperature is approaching thermal shutdown. The Hot Flag signal will remain high as long as the junction temperature is below the Hot flag threshold, typically 140° ...
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... V Vin LDOX Delay Reset Overload on Output Power On Reset Figure 5. NCV8614B Reset Timing Diagram 7.0 V VIN_B 4 > 3.25 V IGNIN < −100 V 5.0 V IGNOUT Load Dump Over Voltage On Input Momentary Glitch on Output Figure 6. IGNOUT Timing Diagram http://onsemi.com 13 Vout Reset Threshold Overvoltage on Input ...
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VIN_A 17V 13.2V VIN_B 16V 13.2V D VIN_H xxV 17V 13.2V 7V ASO_RAIL LDOX Delay Reset 8V Switching Output Voltage from SMPS ASIC Turns On. 8V Switching Output Voltage from SMPS ASIC Turns Off. Figure 7. Auto Switchover Circuit ...
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VBATT_MON 8V 7.85V 7.5V 2.5V 1.5V VPP HV_DET VPP BO_DET Figure 8. Warning Circuitry Timing Diagram 170°C 160°C 150°C 140° LDOX V PP HOT_FLG Figure 9. Thermal Shutdown Timing Diagram Overvoltage on Input Voltage Dip on ...
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... ASO_RAIL 5.0V LDO1 3.3V LDO2 VIN_S3 LDO3 Delay Reset Figure 10. NCV8614B Regulator Output Timing Diagram– VIN_S3 Tied to ASO_RAIL Overvoltage Shutdown http://onsemi.com 16 LDO2 Reset Threshold Glitch on LDO2 ...
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... ASO_RAIL LDO1 LDO2 LDO3 Figure 11. NCV8614B Regulator Output Timing Diagram− VBATT_MON Grounded Load Dump http://onsemi.com 17 ...
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TEMPERATURE (°C) Figure 12. Output Voltage LDO1 vs Temperature 5.10 5.08 5.06 5.04 5.02 5.00 4.98 4.96 4.94 4.92 4.90 −40 −20 ...
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ASO−RAIL VOLTAGE RAMP (V/s) Figure 18. HV−DET Threshold vs. dV/dt 170 150 130 110 1000 D = 100 0.5 0.2 0.1 10 0.05 ...
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Stable Region 10 1 0.1 Unstable Region 0.01 Unexplored Region* 0.001 OUTPUT CURRENT (mA) OUT1 Figure 22. C ESR Stability Region − OUT1 *The min specified ESR is based on Murata’s ...
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Figure 28. Output Response of LDO3 to Loss of Vin− 121 ms Figure 29. Output Response of LDO2 to Loss of Vin−B http://onsemi.com 400 mA OUT3 OUT2 ...
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Figure 30. HV−DET Response to High Voltage − VBAT−MON tied to ASO−RAIL Figure 31. HV−DET Response to High Voltage − VBAT−MON Left Open http://onsemi.com 22 ...
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Figure 32. BO−DET Response to LOW Voltage − VBAT−MON tied to ASO−RAIL Figure 33. BO−DET Response to LOW Voltage − VBAT−MON Left Open http://onsemi.com 23 ...
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Figure 34. Output Response to OVS − VBAT−MON tied to ASO−RAIL Figure 35. Output Response to OVS − VBAT−MON Left Open http://onsemi.com 24 ...
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... PAD AS WELL AS THE TERMINALS. MILLIMETERS DIM MIN MAX A 0.80 1.00 A1 0.00 0.05 A2 0.65 0.75 A3 0.20 REF b 0.20 0.30 D 6.00 BSC D2 3.98 4.28 E 5.00 BSC E2 2.98 3.28 e 0.50 BSC K 0.20 −−− L 0.50 0.60 SOLDERING FOOTPRINT* 20X 0.78 4.24 3.24 5.30 1 20X 0.35 DIMENSIONS: MILLIMETERS ON Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit For additional information, please contact your local Sales Representative NCV8614B/D ...