CS3361
CS3361
Alternator Voltage Regulator
FET Driver
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.
Features
s
Drives Logic Level Power
NFET
s
80V Load Dump
s
Temperature Compensated
Regulation Voltage
s
Shorted Field Protection
Duty Cycle, Self Clearing
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
Block Diagram
VCC
Load Dump
Detection and
Protection
VSUP
Package Options
14 Lead SO
IGN
ENABLE
Series
Regulator
DD
Gnd
NC
OSC
1
SC
NC
V
CC
Sense
STATOR
NC
IGN
OSC
VSUP
RS Flop
Set
Dominate
Q
Lamp
Indicator
S
R
OSC
Lamp
NC
NC
Sense
+
–
+
–
VREG
+
–
VHV
R
Device
Driver
DELAY
ENABLE
STATOR
Power Up
LAMP
STATOR
Timer
VSUP
Gnd
SC
STATOR
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
Rev. 1/29/99
1
A
®
Company
CHERRY [ CHERRY SEMICONDUCTOR CORPORATION ]
