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參數(shù)資料
| 型號： | PC33099DW |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類： | 模擬信號調(diào)理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PDSO16 |
| 封裝： | PLASTIC, SO-16 |
| 文件頁數(shù)： | 1/13頁 |
| 文件大小： | 328K |
| 代理商： | PC33099DW |
1
MOTOROLA ANALOG IC DEVICE DATA
1
MOTOROLA ANALOG IC DEVICE DATA
Advance Information
Alternator Voltage Regulator
The MC33099 is specifically designed for regulation of an automotive
system voltage using diode rectified alternator charging systems commonly
found in automotive applications. The MC33099 provides either an analog or
digital duty cycle control of an ON/OFF ratio of an alternator field current at a
fixed frequency. This provides for a Load Response Control (LRC) of the
alternator field current at low engine RPM to eliminate engine speed hunting
and vibration due to abrupt torque loading of the engine when a sudden
electrical load is applied to the system. Four LRC rates are selectable using
a combination of Pins 7 and 8 being connected to ground.
The MC33099 provides a regulated voltage feedback system to activate
the alternator field current in response to system load current. The system
voltage is monitored and level shifted using internal resistor voltage dividers,
to compared the level shifted system voltage to an internal voltage ramp
referenced to a bandgap reference voltage. The MC33099 regulates the
system voltage to 14.8 V by generating a Pulse Width Modulation (PWM)
voltage waveform at the gate of an external MOSFET to provide an average
alternator field coil current as a function of the internal voltage comparison.
Provides High Side MOSFET Control of a Ground Referenced Field
Winding
Forced Load Response Control (LRC) at Low Engine RPM Due to
Abrupt System Load Currents
Four User Programmable LRC Rates From 1.8 Seconds to 7.4 Seconds
LRC Response During Initial Start
Regulation Voltage Range is ±0.1V at a 14.8 V Regulation Voltage
@ 25
°C
<0.1 V Variation Over Engine Speed Range From 2000 to 10,000 RPM
<0.2 V Variation Over 10% to 95% of Maximum Alternator Field Current
Minimum Duty Cycle of 3.1% for System Load Currents as Low as
1.0 A.
PWM Fixed Operating Frequency of 395 Hz
Internal Level Shifting of External System Voltages
Internal Lamp Driver with Short Circuit, Current Limit, Thermal Limit and
Load Dump Protection
Fault Protection for a Field Short to Ground
Load Dump Protection of Lamp Driver, Field Control Devices, and Loads
Fault Detection of Undervoltage, Overvoltage, Phase Loss (Lose or
Broken Belt) and High Remote Sense Resistance (lose or corroded
sense wire)
Controlled MOSFET and Field Flyback Diode Recovery Characteristics
for Minimum RFI
<1.5 mA Standby Current From Battery @ 25°C
<2.5 mA Standby Current From Battery @125°C
Order Number: MC33099/D
Rev. 2, 06/2001
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Motorola, Inc. 2001. All rights reserved.
This document contains information on a new product. Specifications
and information herein are subject to change without notice.
Ignition 6
4
Lamp Drain
Device
Operating
Temperature Range
Package
MC33099
SEMICONDUCTOR
TECHNICAL DATA
ALTERNATOR VOLTAGE
REGULATOR
ORDERING INFORMATION
PC33099DW
TA = – 40°C to 125°C
SO–16W
PIN CONNECTIONS
DW SUFFIX
PLASTIC PACKAGE
CASE 751G
(SO–16W)
16
1
16
15
14
13
12
11
10
9
2
3
5
7
8
(Top View)
Gate
Battery
Gnd
Source
N.C.
LRC Test
Remote
AGnd
LRC1
N.C.
Phase Filter
Phase
Lamp Gate
LRC2
1
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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