UNISONIC TECHNOLOGIES CO., LTD
UAC3092
ALTERNATOR VOLTAGE
REGULATOR
DESCRIPTION
The UAC3092 is specifically designed for voltage regulation and
Load Response Control (LRC) of diode rectified alternator charging
systems, as commonly found in automotive applications.
In maintaining system voltage, the UAC3092 monitors and
compares the system battery voltage to an externally programmed
set point value and pulse width modulates an N鈥揷hannel MOSFET
transistor to control the average alternator field current.
LINEAR INTEGRATED CIRCUIT
SOP-20
SOP-24
FEATURE
*Forced Load Response Control (LRC) with Heavy Load Transitions
at Low RPM
*Capable of Regulating Voltage to
卤0.1
V @ 25鈩?/div>
*Operating Frequency Selectable with One External Resistor
*< 0.1 V Variation over Speed Range of 2000 to 10,000 RPM
*< 0.4 V Variation over 10% to 95% of Maximum Alternator Output
*Maintains Regulation with External Loads as Low as 1.0 A
*Load Dump Protection of Lamp, Field Control Devices, and Loads
*Duty Cycle Limit Protection
*Provides High Side MOSFET Control of a Ground Referenced Field
Winding
*Controlled MOSFET and Flyback Diode Recovery Characteristics
for Minimum RFI
*Optional 2.5 or 10 sec. LRC Rate Control (Osc. Freq. = 280 kHz)
*Undervoltage, Overvoltage and Phase Fault (Broken Belt) Detection
*Pb-free plating product number: UAC3092L
ORDERING INFORMATION
Order Number
Normal
Lead Free Plating
UAC3092-S20-R
UAC3092L-S20-R
UAC3092-S20-T
UAC3092L-S20-T
UAC3092-S24-R
UAC3092L-S24-R
UAC3092-S24-T
UAC3092L-S24-T
Package
SOP-20
SOP-20
SOP-24
SOP-24
Packing
Tape Reel
Tube
Tape Reel
Tube
UAC3092L-S20-R
(1)Packing Type
(2)Package Type
(3)Lead Plating
(1) R: Tape Reel, T: Tube
(2) S20: SOP-20, S24: SOP-24
(3) L: Lead Free Plating, Blank: Pb/Sn
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Copyright 漏 2005 Unisonic Technologies Co., Ltd
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