MC33092L(20SOP) [UTC]
Automotive Analog Circuit;
| 型号： | MC33092L(20SOP) |
| 厂家： | 
Unisonic Technologies |
| 描述： | Automotive Analog Circuit |
| 文件： | 总8页 (文件大小：97K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
UTC MC33092 LINEAR INTEGRATED CIRCUIT
ALTERNATOR VOLTAGE
REGULATOR
DESCRIPTION
The MC33092 is specifically designed for voltage
regulation and Load Response Control (LRC) of diode
rectified alternator charging systems, as commonly
found in automotive applications.
SOP-20
In maintaining system voltage, the MC33092
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.
FEATURE
*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
SOP-24
*< 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
*Pb-free plating product number: MC33092L
*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
1
UTC UNISONIC TECHNOLOGIES CO., LTD.
QW-R121-003,A
UTC MC33092 LINEAR INTEGRATED CIRCUIT
PIN CONFIGURATION
20-pin Package
1
2
3
4
5
6
7
8
20
19
18
17
16
15
14
13
Filter Buffer
Remote Sense
Lamp Collector
Lamp Base
Vref
Undervoltage
Source
Gate
NC
GND
GND
GND
Oscillator Adjust
Vcc1
Vref0
Oscillator
Phase
Vcc3
12
11
9
Supply Regulation
Rate
10
24-pin Package
1
2
3
4
5
6
7
8
24
23
22
21
20
19
18
17
Filter Buffer
Remote Sense
Lamp Collector
Lamp Base
Vref
Undervoltage
Source
Gate
NC
GND
NC
GND
Oscillator Adjust
NC
NC
Vref0
Oscillator
16
15
14
13
9
NC
10
Phase
GND
Vcc1
Vcc3
11
12
Rate
Supply Regulation
2
UTC UNISONIC TECHNOLOGIES CO., LTD.
QW-R121-003,A
UTC MC33092 LINEAR INTEGRATED CIRCUIT
PIN DESCRIPTION
20-pin
24-pin
PIN NAME
FB
Package
Package
DESCRIPTION
PIN No.
This pin provides a filtered result of the Sense input (if the Sense input
is used) or the Supply Regulation input (if the Sense input is not used).
The Sense input is a remote, low current battery voltage reference
input used to give an accurate representation of the true battery
voltage. This input is also used to monitor overvoltage or load dump
conditions.
1
2
1
2
Sense
Lamp Collector This pin connects to the collector of the transistor (Q2) used to drive
and
the fault lamp. It is also used to sense a closed ignition switch (voltage
Power-Up/Down sense) which then turns power on to the IC.
3
3
The Lamp Base pin provides base current to the fault lamp drive
transistor (Q2).
4
5
4
5
Lamp Base
Grounded to provide a ground return for the fault lamp control logic
circuit.
Ground
Ground
6, 15
7
6,15
7
IC ground reference pins.
Oscillator Adjust A resistor to ground on this pin adjusts the internal oscillator frequency.
This is a test point for the 1.1 V to 1.4 V reference voltage. It has a zero
8
8
Vref0 *
temperature coefficient. The reference is used internally for phase
signal and undervoltage detection.
9
9
Oscillator *
Phase
Test point for checking the operation of the internal oscillator.
The Phase input detects the existence of a magnetic field rotating
within the alternator.
10
10
The Rate pin is used to select a slow mode (floating) or fast mode
(ground) Load
Response Control recovery rate.
11
12
11
12
Rate
The voltage on the Supply Regulation pin is used as a representation
of the alternator output voltage. This input also used to monitor
overvoltage or load dump conditions.
Supply
Regulation
13
14
13
14
VCC3
VCC1
Positive supply for the internal Charge Pump.
Positive supply for the entire IC except for the Charge Pump.
Ground reference for the IC.
15,6
15,6
16,17,18,
19,20
21
Ground
No connection.
16
N/C
17
18
Gate
Controls the Gate of the MOSFET used to energize the field winding.
22
Source
Field winding control MOSFET source reference.
If the voltage at this pin goes below 1.0 V, the fault lamp is guaranteed
23
Undervoltage to turn on. The IC will continue to function, but with limited
performance.
19
20
Test point for the 1.7 V to 2.3 V Bandgap reference voltage. This
voltage has a negative temperature coefficient of approximately –11
24**
Vref *
mV/°C.
NOTE: * Pins 8, 9 and 20(24**) are test points only.
** For 24-pin package.
3
UTC UNISONIC TECHNOLOGIES CO., LTD.
QW-R121-003,A
UTC MC33092 LINEAR INTEGRATED CIRCUIT
BLOCK DIAGRAM
FB UV Vref Vref0
Vcc3
13
Vcc1
14
1
19
20
8
23**
24**
MC33092
Bandgap
Reference
Power
Supply
17 21**
Gate
Bias
Charge
Pump
Lost
Sense
Circuit
+
-
Undervoltage
22**
18
Load Dump
-
+
Signal
Combiner
and Switch
Low
Pass
Filter
2
Source
Buff
Sense
(Remote)
Power
Up/Down
Circuit
3
Overvoltage
+
Lamp
Coll.
12
X1
+
-
Supply
Reg
(Local)
Regulate
Output
Control
+
-
Lamp
Control
Logic
4
10
+
-
Control
Logic
Lamp
Base
Counter
Phase
12
4
8
DAC
5
Up/Down
Counter
(24)
Divide By
(1/12/48)
Prescaler
(24)
Counter
(28)
Gnd
7
Oscillator
Osc.
Adjust
9
11
Rate
6
Gnd
15
Oscillator
Note: ** For 24-pin package
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
Vbat
+Vmax
–Vmin
RATINGS
UNIT
V
Power Supply Voltage
24
40
-2.5
Load Dump Transient Voltage (Note 1)
Negative Voltage (Note 2)
Power Dissipation (Ta = 125°C)
SOP-20
PD
867
1000
mW
SOP-24
Operating Ambient Temperature
Operating Junction Temperature
Ta
Tj
-40 ~ +125
+150
°C
°C
°C
Storage Temperature
Tstg
-45 ~ +150
NOTES: 1. 125 ms wide square wave pulse.
2. Maximum time = 2 minutes.
4
UTC UNISONIC TECHNOLOGIES CO., LTD.
QW-R121-003,A
UTC MC33092 LINEAR INTEGRATED CIRCUIT
ELECTRICAL CHARACTERISTICS (Ta=25°C, unless otherwise specified)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNIT
DC CHARACTERISTICS
Regulation Voltage
VReg
14.85
V
(Determined by external resistor divider)
Regulation Voltage Temperature Coefficient
Suggested Battery Voltage Operating Range
Power Up/Down Threshold Voltage (Pin 3)
Tc
-13
11.5
0.5
-11
14.85
1.2
-9.0
16.5
2.0
mV/°C
V
V
Vbat
Vpwr
Standby Current,
Vbat = 12.8 V, Ignition off, Ta = 25°C
Vbat = 12.8 V, Ignition off, -40°C≦Ta≦125°C
IQ1
IQ2
1.3
2.0
3.0
mA
mA
Zero Temperature Coefficient Reference Voltage,
(Pin 8)
Vref0
1.1
1.25
1.4
V
Band Gap Reference Voltage [Pin 20 (24**)]
Band Gap Reference Temperature Coefficient
Sense Loss Threshold (Pin 2)
Vref
TC
1.7
-13
2.0
-11
0.6
2.3
-9.0
1.0
1.5
V
mV/°C
V
SLoss(th)
PTh
Phase Detection Threshold Voltage (Pin 10)
Phase Rotation Detection Frequency (Pin 10)
Undervoltage Threshold [Pin 19 (23**)]
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 (21**)]
1.0
1.0
1.25
36
V
PRot
Hz
V
VUV
1.25
1.5
VOV
VLD
1.09(Vref) 1.12(Vref) 1.16(Vref)
1.33(Vref) 1.4(Vref) 1.48(Vref)
V
V
f
68
Hz
(Clock oscillator frequency divided by 4096)
Suggested Clock Oscillator Frequency Range, (Pin 9)
(Determined by external resistor, RT)
Duty Cycle [Pin 17 (21**)]
fosc
205
280
350
kHz
At Start–up
During Overvoltage Condition
StartDC
OVDC
27
3.5
247
29
4.7
273
31
5.5
309
%
Low/High RPM Transition Frequency (Pin 10)
LRC Duty Cycle Increase Rate
LRCFreq
Hz
8.5
Low RPM Mode (LRCFreq < 247 Hz),
Pin 11 = Open (Slow Rat)
LRCS
9.5
10.5
%/sec
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)
LRCF
LRCH
34
38
42
409
455
501
NOTE: ** For 24-pin package.
5
UTC UNISONIC TECHNOLOGIES CO., LTD.
QW-R121-003,A
UTC MC33092 LINEAR INTEGRATED CIRCUIT
APPLICATION CIRCUIT
6
UTC UNISONIC TECHNOLOGIES CO., LTD.
QW-R121-003,A
UTC MC33092 LINEAR INTEGRATED CIRCUIT
Standby Current vs. Temperature
Turn-On Voltage vs. Temperature
0.8
0.7
0.6
0.5
0.4
1.8
ISB=Current from Vcc Supply
Vcc=12.8V (see Figure 1)
VON=Voltage at Pin 3
Vcc=12.8V (see Figure 1)
VPin2=VPin12=1.5V
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
Vc1=0.5V (lgnition OFF)
VPin2=VPin12=1.5V
VPin10=VPin11=VPin19(23**)=0V
VPin10=VPin11=VPin19(23**)=0V
0.3
0.2
75
125
100
50
25
0
50
75
125
100
-55
0
-25
25
-55
-25
Ambient Temperature, Ta (°C)
Ambient Temperature, Ta (°C)
Reference Voltage vs. Temperature
0TC Reference Voltage vs. Temperature
1.26
2.2
Vref0=Voltage at Pin 8
Vcc=12.8V (see Figure 1)
Vc2=6.0V (S1 Colsed)
VPin2=VPin12=1.5V
Vref=Voltage at Pin 20(24**)
Vcc=12.8V (see Figure 1)
1.25
1.24
Vc1=0.5V (lgnition OFF)
2.1
2.0
1.9
1.8
VPin2=VPin12=1.5V
VPin10=VPin11=VPin19(23**)=0V
VPin10=VPin11=VPin19(23**)=0V
1.23
1.22
1.21
1.20
75
100
-25
50
-55
25
0
125
-25
0
25
50
75 100
125
-55
Ambient Temperature, Ta (°C)
Ambient Temperature, Ta (°C)
Oscillator Frequency vs. Timing Resistor
Input Voltage vs. Output Duty Cycle
3.0
2.5
2.0
110
100
Vin=Voltage at Pin 2 or 12
Duty Cycle taken at Pin 17(21**)
Vcc=14.8V (see Figure 1)
Load
Dump
R=Resistance from Pin 7 to Ground
f=Frequency at Pin 9
Protection Vc2=6.0V (S1 Closed)
VPin10=1.5V@>309Hz
VPin11=0V, VPin19(23**)=1.5V
1.96
90
1.95
1.94
1.93
80
70
60
Vcc=14.8V (see Figure 1)
Vc2=6.0V (S1 Closed)
VPin2=VPin10=VPin12=VPin19(23**)=1.5V
VPin11=0V
20 30
50 60
70
90
80
100
0
10
40
300 340 360
320
220
280
260
200
240
Frequency, f (kHz)
Duty Cycle, DC (%)
Note: ** For 24-pin package.
7
UTC UNISONIC TECHNOLOGIES CO., LTD.
QW-R121-003,A
UTC MC33092 LINEAR INTEGRATED CIRCUIT
TYPICAL TEST CIRCUIT
Vcc
250
Vcc1
1.0k
FB UV Vref Vref0
19
20
8
14
13
1
Vcc3
23** 24**
MC33092
Bandgap
Reference
Power
Supply
21**
17
Bias
Charge
Pump
Lost
Sense
Circuit
Gate
+
-
Undervoltage
22**
18
2.0k
Load Dump
Signal
Combiner
and Switch Filter
Low
Pass
-
+
2
Source
3
Buff
Sense
Power
Up/Down
Circuit
(Remote)
vc1
vc2
Overvoltage
+
2.0k
Lamp
Coll.
12
X1
+
-
S1
Supply
Reg
Regulate
(Local)
Output
Control
+
-
Lamp
Control
Logic
4
10
+
-
Control
Logic
Lamp
Base
Counter
Phase
12
4
8
5
DAC
Up/Down
Counter
(24)
Divide By
(1/12/48)
Prescaler
(24)
Counter
Gnd
(28)
7
Oscillator
11
9 Oscillator
Output
6
Gnd
15
RT
Rate
Note: ** For 24-pin package
Figure 1.
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
8
UTC UNISONIC TECHNOLOGIES CO., LTD.
QW-R121-003,A
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