FREESCALE MC33092A

Freescale Semiconductor, Inc.
Order this document by MC33092A/D
MC33092A
Freescale Semiconductor, Inc...
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
•
•
•
•
•
•
•
•
•
•
•
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ALTERNATOR VOLTAGE
REGULATOR
SEMICONDUCTOR
TECHNICAL DATA
20
Operating Frequency Selectable with One External Resistor
< 0.1 V Variation over Speed Range of 2000 to 10,000 RPM
1
< 0.4 V Variation over 10% to 95% of Maximum Alternator Output
Maintains Regulation with External Loads as Low as 1.0 A
DW SUFFIX
PLASTIC PACKAGE
CASE 751D
(SO–20L)
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)
PIN CONNECTIONS
Undervoltage, Overvoltage and Phase Fault (Broken Belt) Detection
Simplified Block Diagram
FB
1
UV
19
Vref
20
Vref O
8
VCC1
14
Bandgap
Reference
MC33092A
Lost
Sense
Circuit
Signal
Combiner
and Switch
Sense
(Remote)
Low
Pass
Filter
Charge
Pump
Overvoltage
Regulate
Output
Control
10
Control
Logic
Counter
12
DAC
Counter
(28)
4
9
Oscillator
Lamp
Control
Logic
8
4
17
Gate
6
16 NC
15 Gnd
Oscillator
Adjust
Vref O
7
14 VCC1
8
Oscillator
9
13 VCC3
12 Supply
Regulation
11 Rate
5
11
Rate
3
(Top View)
Lamp
Coll.
4
Lamp
Base
ORDERING INFORMATION
5
Up/Down
Counter
(24)
Divide By
(1/12/48)
Oscillator
Osc.
Adjust
Lamp Base
18 Source
17 Gate
Phase 10
Power
Up/Down
Circuit
X1
7
3
Source
Buff
12
Prescaler
(24)
19 Undervoltage
Lamp Collector
18
Load Dump
Supply
Reg
(Local)
Phase
20 Vref
2
Gnd
Undervoltage
2
1
VCC3
13
Power
Supply
Bias
Filter Buffer
Remote Sense
Gnd
Device
6 15
Gnd
MC33092ADW
Operating
Temperature Range
Package
TA = – 35° to +125°C
SO–20L
 Motorola, Inc. 1997
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DATA
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Rev 0
1
Freescale Semiconductor,
Inc.
MC33092A
MAXIMUM RATINGS
Rating
Symbol
Value
Unit
Vbat
+Vmax
–Vmin
24
40
–2.5
V
V
V
PD
RθJA
867
75
mW
°C/W
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
TJ
+150
°C
Operating Ambient Temperature Range
TA
–35 to +125
°C
Storage Temperature Range
Tstg
–45 to +150
°C
NOTE: ESD data available upon request.
ELECTRICAL CHARACTERISTICS (External components per Figure 1, TA = 25°C, unless otherwise noted).
Freescale Semiconductor, Inc...
Characteristic
Symbol
Min
Typ
Max
Unit
VReg
–
14.85
–
V
DC CHARACTERISTICS
Regulation Voltage
(Determined by external resistor divider)
Regulation Voltage Temperature Coefficient
TC
–13
–11
– 9.0
mV/°C
Suggested Battery Voltage Operating Range
Vbat
11.5
14.85
16.5
V
Power Up/Down Threshold Voltage (Pin 3)
VPwr
0.5
1.2
2.0
V
IQ1
IQ2
–
–
1.3
–
2.0
3.0
mA
mA
Standby Current,
Vbat = 12.8 V, Ignition off, TA = 25°C
Vbat = 12.8 V, Ignition off, –35°C ≤ TA ≤ 125°C
Vref O
1.1
1.25
1.4
V
Band Gap Reference Voltage (Pin 20)
Vref
1.7
2.0
2.3
V
Band Gap Reference Temperature Coefficient
TC
–13
–11
– 9.0
mV/°C
Zero Temperature Coefficient Reference Voltage, (Pin 8)
Sense Loss Threshold (Pin 2)
SLoss(th)
–
0.6
1.0
V
Phase Detection Threshold Voltage (Pin 10)
PTh
1.0
1.25
1.5
V
Phase Rotation Detection Frequency (Pin 10)
PRot
–
36
–
Hz
Undervoltage Threshold (Pin 19)
VUV
1.0
1.25
1.5
V
Overvoltage Threshold (Pin 2, or Pin 12 if Pin 2 is not used)
VOV
1.09(Vref)
1.12(Vref)
1.16(Vref)
V
Load Dump Threshold (Pin 2, or Pin 12 if Pin 2 is not used)
VLD
1.33(Vref)
1.4(Vref)
1.48(Vref)
V
f
–
68
–
Hz
fosc
205
280
350
kHz
Duty Cycle (Pin 17)
At Start–up
During Overvoltage Condition
StartDC
OVDC
27
3.5
29
4.7
31
5.5
%
%
Low/High RPM Transition Frequency (Pin 10)
LRCFreq
247
273
309
Hz
LRCS
8.5
9.5
10.5
%/sec
LRCF
34
38
42
%/sec
LRCH
409
455
501
%/sec
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)
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.
2
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R2
RT
12.5 k
7
X1
Osc.
Adjust
Phase
10
Supply
Reg
(Local)
12
Sense
(Remote)
2
45 k
9
86 k
Prescaler
(24 )
Buff
Counter
Low
Pass
Filter
MC33092
Signal
Combiner
and Switch
Oscillator
Oscillator
280kHz
Lost
Sense
Circuit
NOTES: R1 = R2 = 3.0 k to 5.0 k
R3 = 10 k to 15 k
RT = 50 k to 100 k
R1
28 k
28 k
DAC
FB
1
Counter
(28 )
R3
4
12
10 sec
2.5 sec
Divide By
(1/12/48)
Control
Logic
Overvoltage
11
Rate
8
VCC 1
14
Power
Supply
Up/Down
Counter
(24)
Output
Control
Undervoltage
Bias
Bandgap
Reference
Vref O
8
Load Dump
Vref
20
Regulate
UV
19
250
1.0 k
Alternate Stator
Configuration
Ground
Ground
5
Lamp
Base
4
2.0 k
2.0 k
20 k
10
BSP52T1
(Q2)
Lamp
Collector
3
Source
18
Gate
17
VCC 3
13
6 and 15
Lamp
Control
Logic
Power
Up/Down
Circuit
Charge
Pump
Figure 1. Simplified Application
Freescale Semiconductor, Inc...
Ground
MR850
Stator
Lamp
Field
500
MTB36N06E
(Q1)
B+ Supply
Phase
Sense
Battery
Ignition
Freescale Semiconductor,
Inc.
MC33092A
Figure 1.
3
Freescale Semiconductor,
Inc.
MC33092A
Figure 2. Standby Current versus Temperature
Figure 3. Turn–On Voltage versus Temperature
1.8
ISB = Current from VCC Supply
VCC = 12.8 V (see Figure 8)
VC1 = 0.5 V (Ignition OFF)
VPin 2 = VPin 12 = 1.5 V
VPin 10 = VPin 11 = VPin 19 = 0 V
0.7
0.6
0.5
0.4
0.3
– 25
0
25
50
75
100
1.5
1.4
1.3
1.2
1.1
– 25
25
50
75
TA, AMBIENT TEMPERATURE (°C)
Figure 4. Reference Voltage versus Temperature
Figure 5. 0TC Reference Voltage
versus Temperature
2.0
1.9
– 25
0
25
50
75
100
1.24
100
125
1.23
1.22
1.21
1.20
– 55
125
– 25
0
25
50
75
TA, AMBIENT TEMPERATURE (°C)
Figure 6. Oscillator Frequency
versus Timing Resistor
Figure 7. Input Voltage versus Output Duty Cycle
3.0
110
R = Resistance from Pin 7 to Ground
f = Frequency at Pin 9
V Input , INPUT VOLTAGE (V)
90
80
VCC = 14.8 V (see Figure 8)
VC2 = 6.0 V (S1 Closed)
VPin 2 = VPin 10 = VPin 12 = VPin 19 = 1.5 V
VPin 11 = 0 V
220
240
260
280
300
f, FREQUENCY (kHz)
Vin = Voltage at Pin 2 or 12
Duty Cycle taken at Pin 17
VCC = 14.8 V (see Figure 8)
VC2 = 6.0 V (S1 Closed)
VPin 10 = 1.5 V @ > 309 Hz
VPin 11 = 0 V; VPin 19 = 1.5 V
Load Dump
Protection
2.5
100
60
200
125
Vref O = Voltage at Pin 8
VCC = 12.8 V (see Figure 8)
VC2 = 6.0 V (S1 Closed)
VPin 2 = VPin 12 = 1.5 V
VPin 10 = VPin 11 = VPin 19 = 0 V
1.25
TA, AMBIENT TEMPERATURE (°C)
70
100
1.26
Vref = Voltage at Pin 20
VCC = 12.8 V (see Figure 8)
VC1 = 0.5 V (Ignition OFF)
VPin 2 = VPin 12 = 1.5 V
VPin 10 = VPin 11 = VPin 19 = 0 V
2.1
1.8
– 55
4
0
TA, AMBIENT TEMPERATURE (°C)
V ref O , 0TC REFERENCE VOLTAGE (V)
V ref , REFERENCE VOLTAGE (V)
1.6
1.0
– 55
125
2.2
RT , RESISTANCE (k Ω)
Freescale Semiconductor, Inc...
0.2
– 55
VON = Voltage at Pin 3
VCC = 12.8 V (see Figure 8)
VPin 2 = VPin 12 = 1.5 V
VPin 10 = VPin 11 = VPin 19 = 0 V
1.7
V On , TURN-ON VOLTAGE (V)
I SB , STANDBY CURRENT (mA)
0.8
2.0
1.96
1.95
1.94
1.93
320
340
360
0
10
20
30
40
50
60
70
80
90
100
DC, DUTY CYCLE (%)
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DATA
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7
10
12
RT
Phase
Supply Reg
(Local)
Sense
(Remote)
2
X1
Buff
Counter
Low
Pass
Filter
Prescaler
(24)
Signal
Combiner
and Switch
Oscillator
Output 9
Oscillator
Lost
Sense
Circuit
MC33092
1
Counter
(28)
DAC
FB
UV
4
12
Regulate
Vref
19
20
11
Divide By
(1/12/48)
Control
Logic
Overvoltage
Load Dump
Rate
8
VCC 1
Power
Supply
14
250
Up/Down
Counter
(24)
Output
Control
Undervoltage
Bias
Bandgap
Reference
Vref O
8
Figure 8. Typical Test Circuit
Ground
Gate
Lamp Base
Ground
5
4
Lamp
Collector
3
Source
18
17
6 and 15
Lamp
Control
Logic
Power
Up/Down
Circuit
13
VCC 3
VCC
1.0 k
Charge
Pump
Freescale Semiconductor, Inc...
2.0 k
2.0 k
S1
VC2
VC1
Freescale Semiconductor,
Inc.
MC33092A
Figure 8.
5
Freescale Semiconductor,
Inc.
MC33092A
PIN FUNCTION DESCRIPTION
Freescale Semiconductor, Inc...
Pin No.
Function
Description
1
FB
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).
2
Sense
The Sense input is a remote (Kelvin), 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.
3
Lamp Collector and
Power–Up/Down
This pin connects to the collector of the transistor (Q2) used to drive the fault lamp. It is also used to
sense a closed ignition switch (voltage sense) which then turns power on to the IC.
4
Lamp Base
The Lamp Base pin provides base current to the fault lamp drive transistor (Q2).
5
Ground
Grounded to provide a ground return for the fault lamp control logic circuit.
6, 15
Ground
IC ground reference pins.
7
Oscillator Adjust
A resistor to ground on this pin adjusts the internal oscillator frequency (see Figure 6).
8
* VrefO
This is a test point for the 1.1 V to 1.4 V reference voltage. It has a zero temperature coefficient. The
reference is used internally for phase signal and undervoltage detection.
9
* Oscillator
Test point for checking the operation of the internal oscillator.
10
Phase
The Phase input detects the existence of a magnetic field rotating within the alternator.
11
Rate
The Rate pin is used to select a slow mode (floating) or fast mode (ground) Load
Response Control recovery rate.
12
Supply Regulation
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.
13
VCC3
Positive supply for the internal Charge Pump.
14
VCC1
Positive supply for the entire IC except for the Charge Pump.
Ground
Ground reference for the IC.
16
N/C
No connection.
17
Gate
Controls the Gate of the MOSFET used to energize the field winding.
18
Source
Field winding control MOSFET source reference.
19
Undervoltage
If the voltage at this pin goes below 1.0 V, the fault lamp is guaranteed to turn on. The IC will
continue to function, but with limited performance.
20
* Vref
Test point for the 1.7 V to 2.3 V Bandgap reference voltage. This voltage has a negative
temperature coefficient of approximately –11 mV/°C.
15, 6
*NOTE: Pins 8, 9 and 20 are test points only.
6
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MC33092A
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APPLICATION CIRCUIT DESCRIPTION
Introduction
The MC33092A, designed to operate in a 12 V system, is
intended to control the voltage in an automotive system that
uses a 3 phase alternator with a rotating field winding. The
system shown in Figure 1 includes an alternator with its
associated field coil, stator coils and rectifiers, a battery, a
lamp and an ignition switch. A tap is connected to one corner
of the stator windings and provides an ac signal for rotation
(phase) detection.
A unique feature of the MC33092A is the Load Response
Control (LRC) circuitry. The LRC circuitry is active when the
stator winding ac signal frequency (phase buffer input signal,
Pin 10) is lower than the Low/High RPM transition frequency.
When active, the LRC circuitry dominates the basic analog
control circuitry and slows the alternator response time to
sudden increases in load current. This prevents the
alternator from placing a sudden, high torque load on the
automobile engine when a high current accessory is
switched on.
The LRC circuitry is inactive when the stator winding ac
signal frequency is higher than the Low/High RPM transition
frequency. When the LRC circuitry is inactive, the basic
analog control circuitry controls the alternator so it will supply
a constant voltage that is independent of the load current.
Both the LRC and analog control circuits control the
system voltage by switching ON and OFF the alternator field
current using Pulse Width Modulation (PWM). The PWM
approach controls the duty cycle and therefore the average
field current. The field current is switched ON and OFF at a
fixed frequency by a MOSFET (Q1) which is driven directly
by the IC. The MC33092A uses a charge pump to drive the
MOSFET in a high side configuration for alternators having a
grounded field winding.
A fault detector is featured which detects overvoltage,
undervoltage, slow rotation or non–rotation (broken
alternator belt) conditions and indicates them through a fault
lamp drive output (Pin 4).
A Load Dump protection circuit is included. During a load
dump condition, the MOSFET gate drive (Pin 17) and the
fault lamp drive output are disabled to protect the MOSFET,
field winding and lamp.
Power–Up/Down
Power is continuously applied to the MC33092A through
VCC1 and VCC3. A power–up/down condition is determined
by the voltage on the Lamp Collector pin (Pin 3). When this
voltage is below 0.5 V the IC is guaranteed to be in a low
current standby mode. When the voltage at Pin 3 is above 2.0
V, the IC is guaranteed to be fully operational. The power–up
voltage is applied to Pin 3 via the ignition switch and fault
lamp. In case the fault lamp opens, a 500 Ω bypass resistor
should be used to ensure regulator IC power–up.
A power–up reset circuit provides a reset or set condition
for all digital counter circuitry. There is also a built–in
power–up delay circuit that protects against erratic power–up
signals.
Battery and Alternator Output Voltage Sensing
The battery and the alternator output voltage are sensed
by the remote (Sense, Pin 2), and the local (Supply
Regulator, Pin 12) input buffer pins, respectively, by way of
external voltage dividers. The regulated system voltage is
determined by the voltage divider resistor values.
Normally the remote pin voltage determines the value at
which the battery voltage is regulated. In some cases the
remote pin is not used. When this condition (VPin 2 < 0.6 V
typically) exists, a sense loss function allows the local pin
voltage to determine the regulated battery voltage with no
attenuation of signal. If, however, when the remote pin is
used, and the voltage at this pin is approximately 25% less
than the voltage at the local sense pin (but greater than 0.6 V,
typically), the value at which the battery voltage is regulated
is switched to the local sense pin voltage (minus the 25%).
The signal combiner/switch controls this transfer function.
Low Pass Filter, DAC & Regulator Comparator
The output of the combiner/switch buffer feeds a low pass
filter block to remove high frequency system noise. The filter
output is buffered and compared by the regulator comparator
to a descending ramp waveform generated by an internal
DAC. When the two voltages are approximately equal, the
output of the regulator comparator changes state and the
gate of the MOSFET is pulled low (turned OFF) by the output
control logic for the duration of the output frequency clock
cycle. At the beginning of the next output clock cycle, the
DAC begins its descending ramp waveform and the
MOSFET is turned ON until the regulator comparator output
again changes state. This ongoing cycle constitutes the
PWM technique used to control the system voltage.
Oscillator
The oscillator block provides the clock pulses for the
prescaler–counter chain and the charge control for the
charge pump circuit. The oscillator frequency is set by an
external resistor from Pin 7 to ground as presented in
Figure 6.
The prescaler–counter divides the oscillator frequency by
212 (4096) and feeds it to the output control logic and
divider–up/down counter chain. The output control logic uses
it as the fundamental regulation output frequency (Pin 17).
Load Response Control
The Load Response Control (LRC) circuit generates a
digital control of the regulation function and is active when the
stator output ac signal (Pin 10) frequency is lower than the
Low/High RPM transition frequency. The LRC circuit takes
the output signal of the prescaler–counter chain and with a
subsequent divider and up/down counter to provide delay,
controls the alternator response time to load increases on the
system. The response time is pin programmable to two rates.
Pin 11 programs the divider to divide by 12 or divide by 48. If
Pin 11 is grounded, the signal fed to the up/down counter is
divided by 12 and the response time is 12 times slower than
the basic analog response time. If Pin 11 is left floating, the
signal to the up/down counter is divided by 48 and the
response time is 48 times slower.
The basic analog (LRC not active) and digital duty cycle
control (LRC active) are OR’d such that either function will
terminate drive to the gate of the MOSFET device with the
shortest ON–time, i.e., lower duty cycle dominating.
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MC33092A
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The digital ON–time is determined by comparing the
output of the up/down counter to a continuous counter and
decoding when they are equal. This event will terminate drive
to the MOSFET. A count direction shift register requires three
consecutive clock pulses with a state change on the data
input of the register to result in an up/down count direction
change. The count will increase for increasing system load
up to 100% duty cycle and count down for decreased loading
to a minimum of 29% duty cycle. The analog control can
provide a minimum duty cycle of 4 to 5%. The initial
power–up duty cycle is 29% until the phase comparator input
exceeds its input threshold voltage. Also, the IC powers up
with the LRC circuit active, i.e., when the Lamp Collector pin
exceeds the power–up threshold voltage.
Fault Lamp Indicator
Pins 3 and 4 control the external Darlington transistor (Q2)
that drives the fault indicator lamp. A 10 Ω resistor should be
placed in series with the transistor’s emitter for current
limiting purposes. The fault lamp is energized during any of
the following fault conditions: 1) No Phase buffer (Pin 10)
input due to slow or no alternator rotation, shorted phase
winding, etc.; 2) Phase buffer input ac voltage less than the
phase detect threshold; 3) Overvoltage on Pin 2, or Pin 12 if
Pin 2 is not used, or 4) Undervoltage on Pin 19 with the phase
buffer input signal higher than the Low/High RPM transition
frequency.
Phase Buffer Input
A tap is normally connected to one corner of the
alternator’s stator winding to provide an ac voltage for
rotation detection. This ac signal is fed into the phase buffer
input (Pin 10) through a voltage divider. If the frequency of
this signal is less than the phase rotation detect frequency
(36 Hz, typically), the fault lamp is lit indicating an insufficient
8
alternator rotation and the MOSFET drive (Pin 17) output
duty cycle is restricted to approximately 29% maximum. Also,
if the peak voltage of the ac signal is less than the phase
detect threshold, the fault lamp is lit indicating an insufficient
amount of field current and again the MOSFET drive (Pin 17)
output duty cycle is restricted to approximately 29%
maximum.
Undervoltage, Overvoltage and Load Dump
The low pass filter output feeds an undervoltage
comparator through an external voltage divider. The voltage
divider can be used to adjust the undervoltage detection
level. During an undervoltage condition, the fault lamp will
light only if the phase buffer input signal frequency is higher
than the Low/High RPM transition frequency. This is to
ensure that the undervoltage condition is caused by a true
fault and not just by low alternator rotation. To help maintain
system voltage regulation during an undervoltage condition,
the output duty cycle is automatically increased to 100%.
Even though the fault lamp may be energized for an
undervoltage condition, the MC33092A will continue to
operate but with limited performance.
Through an internal voltage divider, the low pass filter
feeds an overvoltage comparator which monitors this output
for an overvoltage condition. If the overvoltage threshold is
exceeded, the fault lamp is lit and the MOSFET drive (Pin 17)
output duty cycle is restricted to approximately 4% maximum.
The internal voltage divider on the input to the load dump
comparator has a different ratio than the divider used on the
overvoltage comparator. This allows the load dump detect
threshold to be higher than the overvoltage threshold even
though both comparators are monitoring the same low pass
filter output. If the load dump detect threshold is exceeded,
the fault lamp and MOSFET drive outputs are disabled to
protect the MOSFET, field winding and lamp.
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MC33092A
OUTLINE DIMENSIONS
DW SUFFIX
PLASTIC PACKAGE
CASE 751D–04
(SO–20L)
ISSUE E
–A–
20
11
–B–
10X
P
0.010 (0.25)
1
M
B
M
10
20X
D
0.010 (0.25)
Freescale Semiconductor, Inc...
NOTES:
1. DIMENSIONING AND TOLERANCING PER
ANSI Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSIONS A AND B DO NOT INCLUDE
MOLD PROTRUSION.
4. MAXIMUM MOLD PROTRUSION 0.150
(0.006) PER SIDE.
5. DIMENSION D DOES NOT INCLUDE
DAMBAR PROTRUSION. ALLOWABLE
DAMBAR PROTRUSION SHALL BE 0.13
(0.005) TOTAL IN EXCESS OF D DIMENSION
AT MAXIMUM MATERIAL CONDITION.
M
T A
B
S
J
S
F
R
X 45 _
C
–T–
18X
G
K
SEATING
PLANE
DIM
A
B
C
D
F
G
J
K
M
P
R
MILLIMETERS
MIN
MAX
12.65
12.95
7.40
7.60
2.35
2.65
0.35
0.49
0.50
0.90
1.27 BSC
0.25
0.32
0.10
0.25
0_
7_
10.05
10.55
0.25
0.75
INCHES
MIN
MAX
0.499
0.510
0.292
0.299
0.093
0.104
0.014
0.019
0.020
0.035
0.050 BSC
0.010
0.012
0.004
0.009
0_
7_
0.395
0.415
0.010
0.029
M
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Mfax is a trademark of Motorola, Inc.
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