CS3341 CHERRY | Alldatasheet

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Technical content

Features

S RQ R ENABLE STATOR Power Up STATOR Timer VSUP Load Dump Detection and Protection Note: CS-3341/CS-387 Disconnected CS-3351/CS-386 Connected DELAY SC STATOR VSUP I Drives NPN Darlington I Short Circuit Protection I 80V Load Dump I Temperature Compensated Regulation Voltage I Shorted Field Protection Duty Cycle, Self Clearing Package Options CS3341/3351/386/387 Alternator Voltage Regulator Darlington Driver CS3341/51 CS386/387

Description

The CS3341/3351/386/387 integral alternator regulator integrated cir- cuit provides the voltage regulation for automotive, 3-phase alternators. It drives an external power Darlington for control of the alter- nator field current. In the event of a charge fault, a lamp output pin is provided to drive an external dar- lington transistor capable of switch- ing on a fault indicator lamp. An overvoltage or no STATOR signal condition activates the lamp output. The CS3341 and CS3351 are avail- able in SO14 packages. The CS386 and CS387 are available as Flip Chips. 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

A Company ® Rev. 4/15/99 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

unless otherwise specified PARAMETER TEST CONDITIONS MIN TYP MAX UNIT CS3341/3351/386/387 I Supply Supply Current Enabled – 12 25 mA Supply Current Disabled – 50 µA I Driver Stage Device Driver – – – Output High Current V DD = 1.2V -10 -6 -4 mA Output Low Voltage I OL = 25µA – 0.35 V Minimum ON Time 200 µs Minimum Duty Cycle – 6 10 % Short Circuit Duty Cycle 1 5 % Field Switch Turn On Rise Time 30 90 µs Fall Time 30 90 µs I Stator Input High Voltage 10 V Input Low Voltage – 6 V Stator Time Out High to Low 6 100 600 ms Stator Power-Up Input High CS3351/386 only 10 – V Stator Power-Up Input Low CS3351/386 only – 6 V 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 = 0.22µF 65 325 Hz Rise Time/Fall Time C OSC = 0.22µF 17 – – Oscillator High Threshold C OSC = 0.22µF – 6 V I Battery Sense Input Current -10 +10 µA Regulation Voltage @25°C, R 1 = 100kΩ, R2 = 50kΩ 13.5 16.0 V Proportional Control 0.050 0.400 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 14L SO Flip Chip 1 1 Driver Output driver for external power switch-Darlington. 2 2 Gnd Ground. 3, 6, 7, 9, 13 3 NC No connection. 4 4 OSC Timing capacitor for oscillator. 5 5 Lamp Base driver for lamp driver indicates no stator signal or over- voltage condition. 8 6 IGN Switched ignition power up. 10 7 Stator Stator signal input for stator timer (CS3351 also power up). 11 8 Sense Battery sense voltage regulator comparator input and protection. 12 9 V CC Supply for IC. 14 10 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 CS3341/3351 Battery Voltage vs Temperature (°C) Over Process Variation

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 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)

Rev. 4/15/99

Ordering Information

CS3341YDR14 14L SO (tape & reel) CS3351YD14 14L SO CS3351YDR14 14L SO (tape & reel) CS386H Flip Chip CS387H Flip Chip Package Specification: continued Solder Bump Locations, Bump Side Up IGN DD SC CS386/387 Flip Chip 1.96mm 506µm 510µm488µm 506µm594µm 506µm Lamp OSC NC Gnd 742µm762µm VCC Sense Stator 1000µm 605µm 2.07mm Flip Chip © 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.