900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf




Motorola Electronic Components Datasheet

MC33092A Datasheet

ALTERNATOR VOLTAGE REGULATOR

No Preview Available !

Order this document by MC33092A/D
Alternator Voltage Regulator
The MC33092A is specifically designed for voltage regulation and Load
Response Control (LRC) of diode rectified alternator charging systems, as
commonly found in automotive applications. The MC33092A provides load
response control of the alternator output current to eliminate engine speed
hunting and vibration due to sudden electrical loads which cause abrupt
torque loading of the engine at low RPM. Two load response rates are
selectable using Pin 11. The timing of the response rates is dependent on
the oscillator frequency.
In maintaining system voltage, the MC33092A 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.
Forced Load Response Control (LRC) with Heavy Load Transitions
at Low RPM
Capable of Regulating Voltage to ± 0.1 V @ 25°C
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
< 2.0 mA Standby Current from Battery @ 25°C
< 3.0 mA Standby Current from Battery Over Temperature Range
Optional 2.5 or 10 sec. LRC Rate Control (Osc. Freq. = 280 kHz)
Undervoltage, Overvoltage and Phase Fault (Broken Belt) Detection
MC33092A
ALTERNATOR VOLTAGE
REGULATOR
SEMICONDUCTOR
TECHNICAL DATA
20
1
DW SUFFIX
PLASTIC PACKAGE
CASE 751D
(SO–20L)
PIN CONNECTIONS
Simplified Block Diagram
FB UV Vref
1 19 20
Vref O
8
VCC1
14
2
Sense
(Remote)
Lost
Sense
Circuit
MC33092A
Signal
Combiner
and Switch
Low
Pass Buff
Filter
Bandgap
Reference
Bias
Power
Supply
Undervoltage
Load Dump
12
Supply
Reg
(Local)
X1
10
Phase
Counter
7
Osc.
Adjust
Oscillator
Prescaler
(24)
9
Oscillator
Overvoltage
Regulate
12
DAC
Counter 4
(28)
Control
Logic
Divide By
(1/12/48)
Output
Control
8
Up/Down
Counter
(24)
11
Rate
MOTOROLA ANALOG IC DEVICE DATA
VCC3
13
Charge
Pump
Power
Up/Down
Circuit
17
Gate
18
Source
3
Lamp
Coll.
Filter Buffer 1
Remote Sense 2
Lamp Collector 3
Lamp Base 4
Gnd
Oscillator
Adjust
Vref O
Oscillator
5
6
7
8
9
Phase 10
20 Vref
19 Undervoltage
18 Source
17 Gate
16 NC
15 Gnd
14 VCC1
13 VCC3
12
Supply
Regulation
11 Rate
(Top View)
Lamp
Control
Logic
4
Lamp
Base
5
Gnd
6 15
Gnd
ORDERING INFORMATION
Device
Operating
Temperature Range Package
MC33092ADW TA = – 35° to +125°C SO–20L
© Motorola, Inc. 1997
Rev 0
1


Motorola Electronic Components Datasheet

MC33092A Datasheet

ALTERNATOR VOLTAGE REGULATOR

No Preview Available !

MAXIMUM RATINGS
Rating
Power Supply Voltage
Load Dump Transient Voltage (Note 1)
Negative Voltage (Note 2)
Power Dissipation and Thermal Characteristics
Maximum Power Dissipation @ TA = 125°C
Thermal Resistance, Junction–to–Ambient
Operating Junction Temperature
Operating Ambient Temperature Range
Storage Temperature Range
NOTE: ESD data available upon request.
MC33092A
Symbol
Vbat
+Vmax
–Vmin
PD
RθJA
TJ
TA
Tstg
Value
24
40
–2.5
Unit
V
V
V
867
75
+150
–35 to +125
–45 to +150
mW
°C/W
°C
°C
°C
ELECTRICAL CHARACTERISTICS (External components per Figure 1, TA = 25°C, unless otherwise noted).
Characteristic
Symbol Min Typ
Max
DC CHARACTERISTICS
Regulation Voltage
(Determined by external resistor divider)
Regulation Voltage Temperature Coefficient
Suggested Battery Voltage Operating Range
Power Up/Down Threshold Voltage (Pin 3)
Standby Current,
Vbat = 12.8 V, Ignition off, TA = 25°C
Vbat = 12.8 V, Ignition off, –35°C TA 125°C
Zero Temperature Coefficient Reference Voltage, (Pin 8)
Band Gap Reference Voltage (Pin 20)
Band Gap Reference Temperature Coefficient
Sense Loss Threshold (Pin 2)
Phase Detection Threshold Voltage (Pin 10)
Phase Rotation Detection Frequency (Pin 10)
Undervoltage Threshold (Pin 19)
Overvoltage Threshold (Pin 2, or Pin 12 if Pin 2 is not used)
Load Dump Threshold (Pin 2, or Pin 12 if Pin 2 is not used)
SWITCHING CHARACTERISTICS
Fundamental Regulation Output Frequency, (Pin 17)
(Clock oscillator frequency divided by 4096)
Suggested Clock Oscillator Frequency Range, (Pin 9)
(Determined by external resistor, RT, see Figure 6)
Duty Cycle (Pin 17)
At Start–up
During Overvoltage Condition
Low/High RPM Transition Frequency (Pin 10)
LRC Duty Cycle Increase Rate
Low RPM Mode (LRCFreq < 247 Hz),
Pin 11 = Open (Slow Rate)
Low RPM Mode (LRCFreq < 247 Hz),
Pin 11 = Grounded (Fast Rate)
High RPM Mode (LRCFreq > 309 Hz),
Pin 11 = Don’t Care (LRC Mode is disabled)
NOTES: 1. 125 ms wide square wave pulse.
2. Maximum time = 2 minutes.
VReg
TC
Vbat
VPwr
IQ1
IQ2
Vref O
Vref
TC
SLoss(th)
PTh
PRot
VUV
VOV
VLD
f
fosc
– 14.85 –
–13 –11 – 9.0
11.5 14.85 16.5
0.5 1.2 2.0
1.1
1.7
–13
1.0
1.0
1.09(Vref)
1.33(Vref)
1.3
1.25
2.0
–11
0.6
1.25
36
1.25
1.12(Vref)
1.4(Vref)
2.0
3.0
1.4
2.3
– 9.0
1.0
1.5
1.5
1.16(Vref)
1.48(Vref)
– 68 –
205 280 350
StartDC
27
29
31
OVDC 3.5 4.7 5.5
LRCFreq
247
273
309
LRCS
LRCF
LRCH
8.5 9.5 10.5
34 38 42
409 455 501
Unit
V
mV/°C
V
V
mA
mA
V
V
mV/°C
V
V
Hz
V
V
V
Hz
kHz
%
%
Hz
%/sec
%/sec
%/sec
2 MOTOROLA ANALOG IC DEVICE DATA


Part Number MC33092A
Description ALTERNATOR VOLTAGE REGULATOR
Maker Motorola
PDF Download

MC33092A Datasheet PDF






Similar Datasheet

1 MC33092 LINEAR INTEGRATED CIRCUIT
UTC
2 MC33092A ALTERNATOR VOLTAGE REGULATOR
Motorola





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z

Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy