MC79076_07 FREESCALE | Alldatasheet
Document overview
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- PDF pages: 13
Technical content
Features
- Hall or Variable Reluctance Sensor Input
- Ignition Coil Voltage Internally Limited to 375 V
- Coil Current Limiting to 7.5 A
- Output On–Time (Dwell) Control
- Dwell Feedback Control to Sense Coil Variation
- Pb-Free Packaging Designated by Suffix Code EG
Figure 1. 79076 Simplified Application Diagram
ORDERING INFORMATION
Range (TA) Package MC79076DW/R2 -30°C to 125°C 16 SOIC MCZ79076EG/R2 79076 POWER GROUND CURRENT SENSE DWELL VCC SIGNAL GROUND REFERENCE/DWELL ADVANCE BIAS VOLTAGE EST REFERENCE BYPASS DWELL CONTROL RPM DETECT
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Figure 2. 79076 Simplified Internal Block Diagram
Figure 3. 79076 Pin Connections
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ELECTRICAL CHARACTERISTICS
Table 1. Maximum Ratings permanent damage to the device.
- Survivability of device with transient voltage applied to VCC pin for a duration not to exceed 10ms.
- Survivability of device wi th overvoltage applied to VCC pin producing the current for a duration not to exceed 10ms.
- Exceeding this voltage range on the function pin may cause permanent damage to the device.
- A zener diode is incorporated across collector to emitter of the output NPN device to prevent voltage overdrive of the external Darlington
- Pin soldering temperature limit is for 10 seconds maximum dura tion. Not designed for immersion soldering. Exceeding these limits may
cause malfunction or permanent damage to the device.
- Freescale’s Package Reflow capability meets Pb-free requirements for JEDEC standard J-STD-020C. For Peak Package Reflow
MC33xxxD enter 33xxx), and review parametrics.
Analog Integrated Circuit Device Data Freescale Semiconductor 5 79076 STATIC ELECTRICAL CHARACTERISTICS STATIC ELECTRICAL CHARACTERISTICS Table 2. Static Electrical Characteristics values noted reflect the approximate parameter means at TA = 25°C under nominal conditions unless otherwise noted.
- Advance Threshold Voltage is the positiv e (or negative) going voltage on Advance necessary cause the Dwell Control voltage to positive
voltage necessary to attain the threshold.
- Bypass Threshold Voltage is the positive (or negative) going vo ltage on Bypass necessary cause the Dwell voltage to positive (or
voltage necessary to attain the threshold.
- Increasing voltage on Current Sense which when attained will cause Dwell to transition low to 1.5 V with a 10 mA load.
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STATIC ELECTRICAL CHARACTERISTICS EST Threshold Voltage (10) (Ref/Dwell = Advance = 1.0 V, Bypass = 3.0 V) Increasing Decreasing Hysteresis VTH+(EST) VTH-(EST) VHYS(EST) 1.65 0.8 0.79 1.86 0.89 0.97 2.0 V Ref/Dwell Current (11) (VCC = 16 V, Advance = 1.0 V, EST = Bypass = 0 V) Ref/Dwell Voltage = 1.0 V Ref/Dwell Voltage = 20 V I(R/D) -12 -1.0 -1.38 0.02 1.0 5.0 µA Ref/Dwell Clamp Voltage (VCC = 16 V, Advance = 1.0 V, EST = Bypass = 0 V) IR/D = 100µA (Sourcing) IR/D = 1.0mA (Sourcing) V(R/D)CL -0.01 -0.62 -0.04 -0.54 0.2 V Ref/Dwell Threshold (Bypass Mode) (12) (Advance = 1.0 V, EST = Bypass = 0 V, Reference = sinking 10 µA) Increasing Decreasing Hysteresis VTH+(R/D)BP VTH-(R/D)BP VHYS(R/D)BP VB + 0.09 VB + 0.018 0.055 VB + 0.106 VB + 0.03 0.076 VB + 0.116 V Ref/Dwell Threshold (EST Mode) (12) (Advance = 1.0 V, EST = 0 V, Bypass = 3.0 V, Reference = sinking 10 µA) Increasing Decreasing Hysteresis VTH+(R/D)EST VTH-(R/D)EST VHYS(R/D)EST VB + 0.445 VB + 0.038 0.395 VB + 0.50 VB + 0.062 0.436 VB + 0.535 V Ref/Dwell Threshold (No Pump) (13) (Advance = 1.0 V, EST = Bypass = 0 V, Dwell = sinking 10 mA) Increasing Decreasing Hysteresis VTH+(R/D)NP VTH-(R/D)NP VHYS(R/D)NP VB + 0.003 VB + 0.021 VB + 0.013 VB + 0.118 VB + 0.047 VB + 0.072 VB + 0.128 V Notes 10. EST Threshold Voltage is the positive (or negative) going voltage on EST necessary cause the Dwell voltage to positive (or negative) going transition 1.5 V respectively. It is expressed as VTH±(EST) and is in reference to ground. 11. Ref/Dwell can either source or sink current; A minus sign denotes the Ref/Dwell is sourcing current. 12. Ref/Dwell Threshold Voltage (Bypass M ode) is the positive (or negative) going voltage on Ref/Dwell necessary cause the Reference voltage to positive (or negative) going transition 1.5 V respectively. It is expressed as VTH±(RD) = VB + VX where VB is the Bias Voltage and VX is the additional voltage necessary to attain the threshold. 13. Ref/Dwell Threshold Voltage (No Pump) is the positive (o r negative) going voltage on Ref/Dwell necessary cause the Dwell voltage to positive (or negative) going transition 1.5 V respectively. It is expressed as VTH±(RD) = VB + VX where VB is the Bias Voltage and VX is the additional voltage necessary to attain the threshold. Advance = 1.0 V providing no input assist or "No Pump" influence of Dwell signal; Reference open. Table 2. Static Electrical Characteristics (continued) values noted reflect the approximate parameter means at TA = 25°C under nominal conditions unless otherwise noted.
Analog Integrated Circuit Device Data Freescale Semiconductor 7 79076 STATIC ELECTRICAL CHARACTERISTICS Ref/Dwell Threshold (Max Pump) (14) (VCC = 16 V, Advance = 3.0 V, EST = Bypass = 0 V, Dwell sinking 10 mA, Dwell Control = open) Increasing Decreasing Hysteresis VTH+(R/D)MP VTH-(R/D)MP VHYS(R/D)MP VB + 0.175 VB + 0.115 VB + 0.025 VB + 0.474 VB + 0.425 VB + 0.048 VB + 0.80 VB + 0.735 V OUTPUTS Bias Resistance to Ground Dwell = VCC = Ref/Dwell = Reference = Dwell Control = open, Advance = 1.0 V, EST = Bypass = 0 V R(B) 0.55 0.68 0.9 kΩ Bias Voltage (Bypass Mode) Ref/Dwell = Advance = 1.0 V, EST = Bypass = 0 V V(B)BP 2.25 2.43 2.6 V Bias Voltage Regulation (Bypass Mode) Ref/Dwell = Advance = 1.0 V, EST = Bypass = 0 V V(B)BP - 30 40 mV Bias Voltage (EST Mode) VCC = 16 V, Ref/Dwell = Advance = 1.0 V, EST = 0 V, Bypass = 3.0 V V(B)EST 1.9 2.04 2.2 V Dwell Saturation Voltage VCC = 4.0 V, ID = 40 mA, Ref/Dwell = Advance =3.0 V, EST = Bypass = 0 V VCC = 16 V, ID = 160 mA, Ref/Dwell = Advance =3.0 V, EST = Bypass = 0 V VCC = 24 V, ID = 240 mA, Ref/Dwell = Advance =1.0 V, EST = Bypass = 3.0 V VCC = 36 V, ID = 360 mA, Ref/Dwell = Advance =1.0 V, EST = Bypass = 3.0 V V(D)SAT 0.05 0.14 0.20 0.29 0.1 0.24 0.35 0.5 V Dwell Reverse Clamp Voltage (15) V(D)REV -0.9 -0.98 -1.2 V Dwell Leakage Current (16) VCC = 16 V, Dwell = 5.0 V, Ref/Dwell = Advance = 3.0 V, EST = Bypass = 0, Bias Voltage = Reference = open I(D)KG - 0.044 50 µA Reference Low (17) IR = sinking 0.3 mA, Ref/Dwell = Advance = 1.0 V, EST = Bypass = 0 V V(R)LOW - 0.13 0.22 V Notes 14. Ref/Dwell Threshold Voltage (Max Pump) is the positive (or negative) going voltage on Ref/Dwell necessary cause the Dwell voltage to positive (or negative) going transition 1.5 V respectively. It is expressed as VTH±(RD) = VB + VX where VB is the Bias Voltage and VX is the additional voltage necessary to attain the threshold. Advance = 3.0 V providing maximum input assist or Max Pump" influence of Dwell signal; Reference = Dwell Control = open. 15. All pins open except Pwr G nd with Dwell sinking 200 mA. 16. Limit conditions with Dwell output NPN in the OFF condition. 17. Reference saturation voltage to ground with 0.3mA of current going into the Reference. values noted reflect the approximate parameter means at TA = 25°C under nominal conditions unless otherwise noted.
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STATIC ELECTRICAL CHARACTERISTICS Reference High/Un-Clamped (27) VCC = 4.0 V, IR = sourcing 100 mA, Ref/Dwell = 3.0 V, Advance =
1.0 V, EST = Bypass = 0 V
V(R)HI/UNCL 3.2 3.36 - V Reference High/Clamped (27) VCC = 16 V, Ref/Dwell = 3.0 V, Advance = 1.0 V, EST = Bypass = 0 V IR = sourcing 10 µA IR = sourcing 1.0 mA V(R)HI/CL 5.41 15.3 6.0 V CONTROLS Dwell Control Negative Clamp Voltage (27) VCC = 16 V, IDC = sourcing 100 µA, Ref/Dwell = Advance = 1.0 V, EST = Bypass = 0 V V(DC)-CL 0.5 0.7 0.8 V Dwell Control Positive Clamp Voltage (27) VCC = 16 V, IDC = sinking 100 µA, Ref/Dwell = 1.0 V, Advance = Open, EST = Bypass = 0 V V(DC)+CL 8.0 8.2 8.4 V Dwell Control Charge Current (27) VCC = 16 V, Ref/Dwell = 1.0 V, Advance = Dwell Control = 3.0 V, EST = Bypass = 0 V I(DC)CHG 30 47 58 µA Dwell Control Discharge Current (27) VCC = 16 V, Current Sense = 0.5 V, Ref/Dwell = Advance = 1.0 V, EST = Bypass = 0 V I(DC)DISCHG 18 33 48 µA Dwell Control Input Current (27) VCC = 16 V, Ref/Dwell = Advance = 1.0 V, EST = Bypass = 0 V, Dwell Control = 7.0 V I(DC)SINK - 1.1 2.5 µA RPM Detect Charge Current ON (27) VCC = 16 V, Ref/Dwell = 3.0 V, Advance = 1.0 V, EST = Bypass = 0 V I(RPM)CHG -4.0 0.54 1.0 mA RPM Detect Current (27) VCC = 16 V, 1.0 V = Ref/Dwell = Advance = 3.0 V, EST = Bypass = 0 V RPM Detect = 0.5 V RPM Detect = 1.5 V I(RPM)LKG 04.0 -0.1 0.55 0.01 1.0 0.1 µA RPM Detect Clamp Voltage (27) VCC = 16 V, Ref/Dwell = 3.0 V, Advance = 1.0 V, EST = Bypass =
0 V, RPM Detect = sourcing 16 µA
V(RPM)CL 2.4 2.5 2.7 V Notes 18. Dwell Control adjusts the reference voltage of Dwell Comparator. 19. Dwell Control. sourcing 100 µA. 20. Dwell Control sinking 100 µA. 21. Dwell Control at 3.0 V; Internal Dwell Control transistor OFF. 22. Dwell Control at 3.0 V; Internal Dwell Control transistor ON. 23. Dwell Control at 7.0 V; Internal Dwell Control transistor OFF. 24. Q53 and Q54 both ON; Measured with RPM Detect voltage at 0.5 V to reflect maximum source current capability. See Typical Applications on page 10 25. Q53 and Q54 both OFF; Measured with RPM Detect volta ge at 0.5 V and 1.5 V to reflect maximum leakage current. Typical Applications on page 10 26. Q53 and Q54 both ON; RPM Detect sinking 16 µA. Typical Applications on page 10 values noted reflect the approximate parameter means at TA = 25°C under nominal conditions unless otherwise noted.
Analog Integrated Circuit Device Data Freescale Semiconductor 9 79076 STATIC ELECTRICAL CHARACTERISTICS RPM Detect Threshold (27) VCC = 16 V, Ref/Dwell = Advance = 3.0 V, EST = Bypass = 0 V VTH-(RPM) 0.8 0.92 1.0 V RPM Detect Charge Current VCC = 16 V, Ref/Dwell = 3.0 V, Advance = 1.0 V, EST = Bypass = 0 V I(RPM)CHG - -2.0 - mA Notes 27. Decreasing Threshold; RPM Detect voltag e decreased from 0.6 V until Dwell voltage transitions low to 1.5 V with 10 mA load. values noted reflect the approximate parameter means at TA = 25°C under nominal conditions unless otherwise noted.
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Analog Integrated Circuit Device Data Freescale Semiconductor 11 79076 PACKAGING PACKAGE DIMENSIONS PACKAGING PACKAGE DIMENSIONS For the most current package revision, visit www.freescale.com and perform a keyword search using the “98A” listed below. DW SUFFIX EG SUFFIX (PB-FREE) 16-PIN PLASTIC PACKAGE 98ASB42567B ISSUE F
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REVISION HISTORY
REVISION DATE DESCRIPTION OF CHANGES 3.0 3/2007 • Implemented Revision History page
- Converted to Freescale format
- Added MCZ79076EG/R2 to the Ordering Information
- Removed MCCF79076 and all corresponding references.
Rev. 3.0 Information in this document is provided solely to enable system and software implementers to use Freescale Semiconductor products. There are no express or implied copyright licenses granted hereunder to design or fabricate any integrated circuits or integrated circuits based on the information in this document. Freescale Semiconductor reserves the right to make changes without further notice to any products herein. Freescale Semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Freescale 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 consequential or incidental damages. “Typical” parameters that may be provided in Freescale Semiconductor data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals”, must be validated for each customer application by customer’s technical experts. Freescale Semiconductor does not convey any license under its patent rights nor the rights of others. Freescale Semiconductor products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Freescale Semiconductor product could create a situation where personal injury or death may occur. Should Buyer purchase or use Freescale Semiconductor products for any such unintended or unauthorized application, Buyer shall indemnify and hold Freescale Semiconductor and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that Freescale Semiconductor was negligent regarding the design or manufacture of the part. Freescale™ and the Freescale logo are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. © Freescale Semiconductor, Inc., 2007. All rights reserved. How to Reach Us: Home Page: www.freescale.com Web Support: http://www.freescale.com/support USA/Europe or Locations Not Listed: Freescale Semiconductor, Inc. Technical Information Center, EL516
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