
Document Number: TC80310
Rev 2.0, 5/2011
Freescale Semiconductor
Advance Information
* This document contains certain information on a new product.
Specifications and information herein are subject to change without notice.
Freescale Semiconductor, Inc., 2009-2011. All rights reserved.
Alternator Regulator with LIN
The 80310 is an integrated circuit intended to regulate the output
voltage of an automotive alternator.
The IC supplies a current via a high side MOSFET to the excitation
coil of the alternator and provides an internal freewheeling diode. It
keeps the battery at its nominal charge and delivers current to
electrical devices within the vehicle.
The 80310 also provides a load response control mechanism
(LRC), and has an interface for the industry standard LIN protocol
(Revision 1.3) to allow an ECU to control the regulated voltage and the
LRC rate among other parameters. The ECU also can read back
information about the status of the regulator and the alternator via LIN.
It can be programmed for most functions using OTP (Non-volatile
Memory) and fit a large number of alternators and applications.
Features
High side field driver
Internal freewheeling diode
Up to 8.0 A rotor current (excitation coil)
Load response control (LRC)
Thermal protection
Thermal compensation
LIN interface
Set point voltage selectable from 10.6 to 16 V
Rotor control and die temperature monitoring via LIN
Figure 1. 80310 Simplified Application Diagram (LIN Mode)
Figure 2. 80310 Simplified Application Diagram (Standalone, Self-start Mode)
AUTOMOTIVE ALTERNATOR
REGULATOR
ORDERING INFORMATION
Device
Temperature
Range (TJ)
Package
TC80310AWS
-40 to 150°C
Die
TO3 - Contact sales for information on limited engineering
sample quantities. Production version is die sales only.
TOP VIEW
80310
Stator
Rotor
Coil
Battery
+
-
B+A
PH1
PH2
EXC
LIN
SGND
TC80310
1.5
μF/2.2 μF
Alternator
GND
Master
ECU
Control
Diagnose
Stator
Rotor
Coil
Battery
+
-
B+A
PH1
PH2
EXC
LIN
SGND
TC80310
1.5
μF/2.2 μF
Alternator
GND