CS290/291 CS290/291 Ignition Controller Features Description The CS290/291 are integrated circuits to be used in the automotive ignition system. The application diagram shown below highlights the CS290. The CS291 is identical with the differential input replaced by a single-ended input. The part is capable of withstanding 90V load dump transients in the circuit shown below. The part is also reverse battery protected. ■ 40mA Driver ■ Stall Timing ■ Output Current Control ■ Output Clamp ■ Overvoltage Shutdown Absolute Maximum Ratings Power supply voltage, VBAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .−0.3V to 22V Peak Transient Voltage (Load Dump 76V @ 14V VBAT) . . . . . . . . . . . . . . . .90V Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .−55°C to 165°C Operating Junction Temperature, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .150°C Lead Temperature Soldering Wave Solder (through hole styles only) . . . . . . .10 sec. max, 260°C peak Reflow (SMD styles only) . . . . . . .60 sec. max above 183°C, 230°C peak Package Options 14 Lead PDIP Gnd Application Diagram VBAT 1 BI MB CS AC NC 25/75 OUT VIN+ CVS VIN− D Start VCC 1k 16 Lead SO Wide 330 27k 55 0.1µF 18V VCC VIN+ VIN− Start D 5k IN+ IN− 25/75 16k CVS 3.2M (optional) NC 1 NC MB BI AC CS 25/75 NC VIN+ OUT Gnd CVS VIN− D Start VCC 4k CS290 CS291 OUT 200 CS MB CADAPTIVE 0.1µF Ignition Coil 5k AC CRUN 0.1µF CS290 Gnd 15.3k BI 200 CSTALL 0.1µF 56 Adjust for 6.5A (max) Coil Current 0.05 NC 1 NC NC BI MB CS AC TEST 25/75 OUT Gnd CVS VIN− D Start VCC Consult Factory for Flip Chip Cherry Semiconductor Corporation 2000 South County Trail, East Greenwich, RI 02818 Tel: (401)885-3600 Fax: (401)885-5786 Email: [email protected] Web Site: www.cherry-semi.com Rev. 3/8/99 1 A ® Company CS290/291 Electrical Characteristics: 6V < VB < 16V, −30°C < TA < 125°C PARAMETER TEST CONDITIONS MIN TYP MAX UNIT ■ Input Positive Threshold Negative Threshold 66 %VBAT VBAT =16V VBAT = 6V 29 29 Input Impedance Input = 100µA 70 325 kΩ VCC Negative Edge Filter VBAT = 16V VBAT = 6V 18 4 1100 1100 µs Negative Edge Delay (Start Mode) VBAT = 6V 1.1 3.1 ms Positive Edge Delay (Start Mode) VBAT = 5V 1.06 1.80 ms Delay Time (Start High to Output Low) VBAT = 14V 0 16 µs Output Current VBAT = 6V 40 65 mA Output SOA VBAT = 22V 40 65 mA Output Leakage VBAT = 18V 0 100 uA Output Clamp Voltage Output = 10mA 13.7 17 V Output Clamp Impedance (Refers to Collector Sense Voltage pin) Output = 10mA 10 80 Ω High Frequency On Time VBAT = 14V 70 80 % ICC VBAT = 6V VBAT = 16V 1.4 5 4.6 19 mA AC Gain Adaptive Cap Gain VBAT = 14V 0.8 1.2 V/V VCS Regulation VBAT = 6V 140 210 mV 24.3 31 V 0 11 mV Hysteresis %VBAT 9 %VBAT ■ Output Stage ■ General High Voltage Shutdown ■ Stall VSTALL Soft Shutdown Voltage VCS = 6V Soft Shutdown Frequency VBAT = 14V 1.0 2.6 Hz Soft Shutdown Time VBAT = 6V 13.1 27 ms Stall to Spark Output Delay VBAT = 14V 4.5 8.9 ms Battery Interrupt Time VBAT = 14V 25 750 ms Battery Interrupt Recovery Time (200 Hz) 0 800 ms Dwell @ 10Hz (Start Mode) VBAT = 5V 46 54 % Start to Output Disable Time VBAT = 14V 65 135 ms Excess Dwell @ 20Hz (Run Mode) VBAT = 14V 14 20.8 % ■ Dwell 2 PARAMETER TEST CONDITIONS MIN TYP MAX UNIT ■ Dwell: continued VBAT = 14V 14 20.8 % Reduced Dwell Threshold 16.6 21.0 V Reduced Dwell Hysteresis 200 800 mV 4.0 6.0 % Excess Dwell @ 200Hz (Run Mode) Reduced Dwell VBAT = 20V Package Pin Description PACKAGE PIN # 14 lead PDIP PIN SYMBOL FUNCTION 16 lead SO wide CS290 CS291 1 6 6 Gnd Signal Ground. 2 2 3 MB Master Bias. Sets up operating currents on the IC with external resistor. 3 3 4 AC Adaptive Capacitor. Follows the 25/75 capacitor. Voltage trip points control the Output for setting dwell. 4 4 5 25/75 Run Capacitor. Provides 25%/75% charge and discharge current to an external capacitor for setting dwell. 5 5 NC VIN+ Input pin +. 6 7 7 VIN− Input pin −. 7 8 8 Start Input pin to put device in the “start mode”. 8 9 9 VCC Supply input voltage. 9 10 10 D 10 11 11 CVS Collector Voltage Sense. Input for flyback detect. 11 12 12 OUT Output. Driver for external darlington. 12 1,13,16 1,2,16 NC No connection. 13 14 14 CS Current Sense. Feedback for max coil current. 14 15 15 BI Battery Int. Input for “stall mode” of operation NC NC 13 Test Supply current to output pin. Factory test pin. Pin should be grounded in customer application. Typical Performance Characteristics Timing Diagram, ICOIL vs. Time ICOIL (mA) 40 Dwell Time Normal Run Mode 17.5% High Voltage Mode 5.0% Start Mode 50.0% Current Limit 30 20 Spark Plug Fires 10 0 Time Dwell Time 3 CS290/291 Electrical Characteristics: 6V < VB < 16V, −30°C < TA < 125°C CS290/291 Package Specification PACKAGE DIMENSIONS IN mm (INCHES) PACKAGE THERMAL DATA Thermal Data D Lead Count 14L PDIP 16L SO Wide Metric Max 19.69 10.50 Min 18.67 10.10 English Max .775 .413 RΘJC RΘJA Min .735 .398 typ typ 14 Lead PDIP 48 85 16 Lead SO Wide 23 105 ˚C/W ˚C/W Plastic DIP (N); 300 mil wide 7.11 (.280) 6.10 (.240) 8.26 (.325) 7.62 (.300) 1.77 (.070) 1.14 (.045) 2.54 (.100) BSC 3.68 (.145) 2.92 (.115) .356 (.014) .203 (.008) 0.39 (.015) MIN. .558 (.022) .356 (.014) REF: JEDEC MS-001 Some 8 and 16 lead packages may have 1/2 lead at the end of the package. All specs are the same. D Surface Mount Wide Body (DW); 300 mil wide 7.60 (.299) 7.40 (.291) 10.65 (.419) 10.00 (.394) 0.51 (.020) 0.33 (.013) 1.27 (.050) BSC 2.49 (.098) 2.24 (.088) 1.27 (.050) 0.40 (.016) 2.65 (.104) 2.35 (.093) 0.32 (.013) 0.23 (.009) D REF: JEDEC MS-013 0.30 (.012) 0.10 (.004) Ordering Information Part Number CS290N14 CS291N14 CS290DW16 CS290DWR16 CS291DW16 CS291DWR16 Rev. 3/8/99 Description 14L PDIP 14L PDIP 16 Lead SO Wide 16 Lead SO Wide (tape & reel) 16 Lead SO Wide 16 Lead SO Wide (tape & reel) Cherry Semiconductor Corporation reserves the right to make changes to the specifications without notice. Please contact Cherry Semiconductor Corporation for the latest available information. 4 © 1999 Cherry Semiconductor Corporation