UNISONIC TECHNOLOGIES CO., LTD
UAC33092
LINEAR INTEGRATED CIRCUIT
ALTERNATOR VOLTAGE
REGULATOR
SOP-20
DESCRIPTION
The UAC33092 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 UAC33092 monitors and
compares the system battery voltage to an externally programmed
set point value and pulse width modulates an N–channel MOSFET
transistor to control the average alternator field current.
SOP-24
FEATURE
*Forced Load Response Control (LRC) with Heavy Load Transitions
at Low RPM
*Capable of Regulating Voltage to ±0.1 V @ 25℃
*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
ORDERING INFORMATION
Ordering Number
Package
Packing
Lead Free
Halogen Free
UAC33092L-S20-R
UAC33092L-S20-T
UAC33092L-S24-R
UAC33092L-S24-T
UAC33092G-S20-R
UAC33092G-S20-T
UAC33092G-S24-R
UAC33092G-S24-T
SOP-20
SOP-20
SOP-24
SOP-24
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