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1
Features
Device
Driver
Gnd
Sense
VCC
OSC
IGN
ENABLE
Series
Regulator
VSUP
LAMP
VREG
ILamp
OSC
VHV
+
–
RS Flop
Set
Dominate
S
R
Q
R
ENABLE
STATOR
Power Up
STATOR
Timer
VSUP
Load Dump
Detection and
Protection
Note:
+
–
DELAY
SC
STATOR
+
–
VSUP
I
Drives NPN Darlington
Short Circuit Protection
80V Load Dump
Temperature Compensated
Regulation Voltage
Shorted Field Protection
Duty Cycle, Self Clearing
I
I
I
I
Package Options
C
Alternator Voltage Regulator
Darlington Driver
Description
CS3341/51
CS386/387
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
I
CC
Load Dump .........................................................................................400 mA
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
V
CC
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