1

Features

Device

Driver

Gnd

Sense

VCC

OSC

IGN

ENABLE

Series

Regulator

VSUP

LAMP

VREG

Lamp

Indicator

OSC

VHV

+

–

RS Flop

Set

Dominate

S

R

Q

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

s

Drives NPN Darlington

s

Short Circuit Protection

s

80V Load Dump

s

Temperature Compensated

Regulation Voltage

s

Shorted Field Protection

Duty Cycle, Self Clearing

Package Options

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

Storage Temperature Range .....................................................-55°C to +165°C

Junction Temperature Range ....................................................-40°C to +150°C

Continuous Supply..........................................................................................27V

Lead Temperature Soldering

Reflow (SMD styles only)............60 sec. max above 183°C, 230°C peak

1

DD

Gnd

NC

OSC

Lamp

NC

NC

SC

NC

Sense

IGN

STATOR

NC

14 Lead SO

Flip Chip

CS3341/51

CS386/387

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