CS3361 CHERRY

Document overview

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Technical content

Features

S RQ R ENABLE STATOR Power Up STATOR Timer VSUP Load Dump Detection and Protection DELAY SC STATOR VSUP I Drives Logic Level Power NFET I 80V Load Dump I Temperature Compensated Regulation Voltage I Shorted Field Protection Duty Cycle, Self Clearing Package Options CS3361 Alternator Voltage Regulator FET Driver CS3361

Description

The CS3361 integral alternator reg- ulator integrated circuit provides the voltage regulation for automo- tive, 3-phase alternators. It drives an external logic level N channel enhancement power FET for control of the alternator field current. In the event of a charge fault, a lamp output pin is provided to drive an external darlington tran- sistor capable of switching on a fault indicator lamp. An overvolt- age or no Stator signal condition activates the lamp output. The CS3361 is available in a 14 lead SO package. Block Diagram Absolute Maximum Ratings I Lead Temperature Soldering 1DD Gnd NC OSC Lamp NC NC SC NC VCC Sense IGN STATOR NC

14 Lead SO

1 A Company ®

Rev. 1/29/99 Cherry Semiconductor Corporation

2000 South County Trail, East Greenwich, RI 02818

Tel: (401)885-3600 Fax: (401)885-5786 Email: info@cherry-semi.com Web Site: www.cherry-semi.com

Electrical Characteristics: -40°C < TA < 125°C, -40°C < TJ < 150°C, 9V ≤ VCC ≤ 17V; unless otherwise specified. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT CS3361 I Supply Supply Current Enabled – 10 mA Supply Current Disabled – 50 µA I Driver Stage Output High Voltage 5.5 12 V Output High Current V DD = 1.2V -10 -6 -4 mA Output Low Voltage I OL = 25µA – 0.35 V Minimum ON Time C OSC = 0.022µF 200 µs Minimum Duty Cycle – 6 10 % Short Circuit Duty Cycle 1 5 % Field Switch Turn On Rise Time 15 75 µs Fall Time 15 75 µs I Stator Input High Voltage 10 V Input Low Voltage – 6 V Stator Time Out High to Low 6 100 600 ms I Lamp Output High Current V LAMP @ 3V – 50 µA Output Low Voltage I LAMP @ 30mA – 0.35 V I Ignition Input High Voltage I CC > 1mA 1.8 – V Input Low Voltage I CC < 100µA – 0.5 V I Oscillator Oscillator Frequency C OSC = 0.022µF 90 210 Hz Rise Time/Fall Time C OSC = 0.022µF 17 – – Oscillator High Threshold C OSC = 0.022µF – 4.5 V I Battery Sense Input Current -10 +10 µA Regulation Voltage @25°C, R 1 = 100kΩ, R2 = 50kΩ 13.8 15.8 V Proportional Control 0.10 0.25 V High Voltage V High Voltage @ Lamp On 1.083 1.190 Threshold Ratio V Regulation @ 50% Duty Cycle High Voltage Hysteresis 0.020 0.600 V

PACKAGE PIN # PIN SYMBOL FUNCTION 1 Driver Output driver for external power switch. 2 Gnd Ground. 3, 6, 7, 9, 13 NC No connection. 4 OSC Timing capacitor for oscillator.

5 Lamp Base driver for lamp driver indicates no stator signal or over-

voltage condition. 8 IGN Switched ignition power up. 10 Stator Stator signal input for stator timer. 11 Sense Battery sense voltage regulator comparator input and protection. 12 V CC Supply for IC. 14 SC Short circuit sensing. Typical Performance Characteristics 15.5 14.5 13.5 Battery Voltage Temperature (°C) −40 −20 0 20 40 60 80 100 120 CS3361 Battery Voltage vs Temperature (°C) Over Process Variation

5Rev. 1/29/99

Ordering Information

CS3361YDR14 14L SO (tape & reel) Package Specification Thermal Data 14L SO RΘJC typ 30 ˚C/W RΘJA typ 125 ˚C/W D Lead Count Metric English Max Min Max Min 14L SO 8.75 8.55 .344 .337 PACKAGE DIMENSIONS IN mm (INCHES) PACKAGE THERMAL DATA © 1999 Cherry Semiconductor Corporation Cherry Semiconductor Corporation reserves the right to make changes to the specifications without notice. Please contact Cherry Semiconductor Corporation for the latest available information. Surface Mount Narrow Body (D); 150 mil wide 0.33 (.013) 6.20 (.244) 5.80 (.228) 4.00 (.157) 3.80 (.150) 1.57 (.062) 1.37 (.054) D 0.25 (0.10) 0.10 (.004) 1.75 (.069) MAX 1.27 (.050) 0.40 (.016) REF: JEDEC MS-012 0.25 (.010) 0.19 (.008)