MC33197AP [MOTOROLA]
SPECIALTY ANALOG CIRCUIT, PDIP8, PLASTIC, DIP-8;
| 型号： | MC33197AP |
| 厂家： | 
MOTOROLA |
| 描述： | SPECIALTY ANALOG CIRCUIT, PDIP8, PLASTIC, DIP-8 光电二极管 |
| 文件： | 总8页 (文件大小：119K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Order this document by MC33197A/D
AUTOMOTIVE WASH
WIPER TIMER
The MC33197A is a standard wiper timer control device designed for
harsh automotive applications. The device can perform the intermittent, after
wash, and continuous wiper timer functions. It is designed to directly drive a
wiper motor relay. The MC33197A requires very few external components
for full system implementation. The intermittent control pin can be switched
SEMICONDUCTOR
TECHNICAL DATA
to ground or V
to meet a large variety of possible applications. The
bat
intermittent timing can be fixed or adjustable via an external resistor. The
MC33197A is built using bipolar technology and parametrically specified
over the automotive ambient temperature range and 8.0 to 16 V supply
voltage. The MC33197A can operate in both front and rear wiper
applications.
• Adjustable Time Interval of Less Than 500 ms to More Than 30 s
8
• Intermittent Control Pin Can Be Switched to Ground or V
• Adjustable After Wipe Time
bat
1
P SUFFIX
PLASTIC PACKAGE
CASE 626
• Priority to Continuous Wipe
• Minimum Number of Timing Components
• Integrated Relay Driver With Free Wheeling Protection Diode
• Operating Voltage Range From 8.0 to 16 V
8
• For Front Wiper and Rear Wiper Window Applications
1
D SUFFIX
PLASTIC PACKAGE
CASE 751
ORDERING INFORMATION
Operating
(SO–8)
Temperature Range
Device
MC33197AD
MC33197AP
Package
SO–8
T
= – 40° to +105°C
= – 40° to +125°C
A
T
A
DIP–8
PIN CONNECTIONS
Out
MAXIMUM RATINGS
1
2
3
4
8
7
6
5
INT
Osc2
Osc1
Gnd
Rating
Symbol
Value
Unit
V
V
CC
Continuous Supply Voltage (V
Storage Temperature
)
V
CC
16
Pin 6
W/W
CONT
T
stg
–55 to +150
°C
(Top View)
(SO–8)
Thermal Resistance (Junction–to–Ambient)
DIP–8 Package
SO–8 Package
R
°C/W
θJA
100
145
Operating Ambient Temperature Range
DIP–8 Package
T
°C
A
Osc2
INT
1
2
3
4
8
7
6
5
Osc1
CONT
W/W
–40 to +125
–40 to +105
SO–8 Package
Out
Operating Junction Temperature Range
Maximum Junction Temperature
T
–40 to +150
150
°C
°C
J
V
Gnd
CC
T
J(max)
(Top View)
NOTE: ESD data available upon request.
This document contains information on a new product. Specifications and information herein
are subject to change without notice.
Motorola, Inc. 1996
Rev 0
MC33197A
Representative Block Diagram
V
bb
R1 = 220
R2 = 22 k
Ω
Ω
R1
C1
R3 = 1.5 to 22 k
Ω
Wiper
Motor
Relay
R4 = 4.7 k
R5 = 4.7 k
Ω
Ω
V
V
bb
Variable Current Sources
CC
MC33197A
C1 = 47
µF
Out
C2 = 100 nF
Int
Switch
INT
R3
C2
Ref
Water Pump Motor
M
W/W
Logic
Input
Comparator
Ref
R4
R5
Osc2
Osc1
V
bb
Gnd
Ref
Input Comparator
with Hysteresis
Cont Switch
CONT
R2
Gnd
This device contains 390 active transistors.
ELECTRICAL CHARACTERISTICS (–40°C ≤ T ≤ +125°C, 8.0 V ≤ V
≤ 16 V, unless otherwise noted. Typical values reflect
A
CC
approximate mean at T = 25°C with V
= 14 V at the time of initial device characterization.)
A
CC
Characteristic
Functional Supply Voltage Range
Operating Supply Voltage Range
Standby Supply Current (V = 16 V, R2 = 68 k)
Symbol
Min
8.0
8.0
–
Typ
–
Max
18
Unit
V
V
CCF
V
–
16
V
CCOP
I
I
I
I
4.0
7.0
7.5
10
5.2
mA
mA
mA
mA
%
CC
CC
CC
CC
CC
Supply Current INT Active (R3 = 2.5 k)
–
8.4
Supply Current Relay “On” (R2 = 68 k)
–
11.2
14.5
Supply Current INT and Relay “On” (R2 = 68 k, R3 = 2.5 k)
–
Oscillator Variations with Supply Voltage and Temperature (excluding
external component tolerances, C2 = 100 nF polyester capacitor)
(Notes 1 & 2)
K
osc
10 V ≤ V ≤ 16 V
bb
–
–
10
15
–
–
8.0 V ≤ V ≤ 16 V
bb
Relay Resistance
R
60
–
–
0.9
–
–
Ω
V
V
–
L
Output Voltage (I
= 200 mA)
V
out
1.5
22
out
Output Clamp Voltage (I
= 20 mA)
V
cl
19.5
out
Oscillator Period Coefficient (T = 25°C)
A
V
bb
V
bb
V
bb
= 13 V (Note 3)
= 13 V (INT Connected to Gnd) (Note 4)
= 13 V (INT Connected to V , R1 = 220 Ω) (Note 4)
bat
t
0.98
15.1
11.5
1.0
15.5
12.1
1.03
15.9
12.7
b1
t
b2g
t
b2v
CONT Threshold (V
CONT Threshold (V
= 13 V)
V
6.0
–
–
8.5
–
V
V
CC
CC
ih
ih
= 16 V)
V
V
/2
CC
NOTES: 1. The oscillator frequency is defined by the current flowing through the external resistor R2. The voltage at the INT pin is (V /2 – V ) and hence the
CC
be
current flowing through R3 is different if R3 is connected to V or to Gnd because of the voltage drop across resistor R1. This voltage drop causes
bb
the oscillator coefficient for t to be different for the two cases of INT terminated to Gnd or to V . Because of this, the oscillator coefficient is speci–
b2
bb
fied with a specific value of R1 whenever INT is connected to V . If R1 is changed, the coefficient will change. Also, any extra current through the
bb
resistor R1 other than the current used by the device will cause timing deviations in t timings (as in the case where two devices are sharing a
b2
common R1 resistor).
2. The oscillator stability with temperature is dependent on the temperature coefficients of the external components. If the capacitance value of the
external capacitor varies more than 5% over the parametric temperature range, the figures quoted for oscillator variation are not valid.
3. The t duration is given by coefficient 4 x R2 x C2 (t duration = t x 4 x R2 x C2).
b1
b1
b1
4. The t duration is given by coefficient x R3 x C2 (t duration = t x R3 x C2).
b2 b2 b2
2
MOTOROLA ANALOG IC DEVICE DATA
MC33197A
Figure 1. Intermittent Wash Wiper Typical Application
+ Battery Line
V
bb
C1
R1
Washer
V
CC
R3
R4
Intermittent
Low Speed
High Speed
INT
MC33197A
Out
W/W
Osc2
Wiper Motor
Low Speed
Osc1 Gnd
M
C2
R2
Wash Wipe
Switch
Water
Pump
M
High Speed
This application shows the MC33197A with the external wirings and two speed
wiper motor. This application has the Intermittent and Wash Wiper functions.
INTRODUCTION
The MC33197A is a wiper timer control device designed
for use in harsh automotive applications. The device can
perform the intermittent, after wash, and continuous wiper
timer functions.
The MC33197A is designed to directly drive a wiper motor
relay. The MC33197A is suitable for both front and rear wiper
applications. The MC33197A connects directly to the
The wash wiper timer function detects the water pump
motor’s operation. When the pump motor activation is
detected, the MC33197A turns the wiper on for the entire
duration of the pump motor’s activation. When the motor is
turned off, it generates an after wash timing (T2) to maintain
the wiping action. The W/W pin is connected to the water
pump motor through a protection resistor (R4).
vehicle’s battery voltage (V ) through a 220 Ω resistor used
The MC33197A also has a continuous function, which
activates the wiper relay whenever the CONT input is
activated. The CONT input is connected to a switch through
a protection resistor (R5). The CONT input comparator has
bat
with a 47 µF de–coupling filter capacitor. The device has an
internal oscillator controlled by one of two external resistors
(R2 and R3) in addition to one external capacitor (C2),
dependent on the application function required. The values of
an input threshold of V /2 with hysteresis.
bb
C2 and R2 determine the t
generate the relay wiper activation during the INT function
(T3) and the after wash timing (T2) during the wash wipe
time base. T
is used to
The device has internal debounce circuitry, based on the
oscillator period. This provides filtering of the intermittent
(INT) and wash wipe (W/W) input signals (see T1 Debounce
Timing paragraph that follows). The device directly drives the
wiper motor relay. It internally incorporates a 20 V free
wheeling zener diode to protect the device against
overvoltage spikes produced when relay is switched off.
b1
b1
mode. The values C2 and R3 determine the t time base.
b2
The t
intermittent time (T4).
time base is used to generate the pause or
b2
The intermittent wiper function can generate intermittent
timing (T4) from less than 500 ms to more than 30 seconds.
The intermittent function of the device can be activated by the
Intermittent Operation
Conditions:
INT input connected to either ground or V . The intermittent
timing is externally adjustable by changing the value of
resistor R3.
bat
• W/W not connected or connected to ground.
• CONT not connected or connected to ground.
• INT connected to V or to ground.
bb
3
MOTOROLA ANALOG IC DEVICE DATA
MC33197A
In this configuration, the circuit will respond to the
Wash Wiper and Intermittent Operation
switching of INT to either V or ground after a time T1 (see
T1 Debounce Timing). If INT is disconnected before the end
of T1; no action will be taken. After a time T1, the output will
If W/W is activated during the time INT is also activated,
the circuit will respond to W/W after a time T1 (see T1
Debounce Timing). The output will turn on after T1, and stay
on for a time T2 + T3 after W/W is deactivated. Following this,
normal operation of INT will occur. This is shown on Figure 4.
bb
be switched on for a duration, T3 = 16 x 4 x t and then
b1
switched off for a duration, T4 = 144 x 4 x t . This sequence
b2
will continue to repeat so long as INT is disconnected from
V
or ground for a time duration greater than T1. If INT is
bb
Figure 4. Switching Waveform W/W and INT Active
disconnected during the time T3; the output will remain on for
the remainder of T3. This is illustrated in the diagram on
Figure 2.
INT
Figure 2. Switching Waveform INT Timing
W/W
Out
INT
Out
T1
T4
T3
T3
T1
T3
T4
T2
T1 Debounce Timing
The criteria for an input signal to be detected is that it
should be active at two successive negative internal clock
edges. The inputs are sampled on the negative edge of the
internal clock. If two consecutive samples are the same, the
input is detected as being in that state. Hence the time T1 from
a signal becoming active to the time that the circuit responds
can be anytime from 4 x t to 2 x 4 x t (due to synchronizing
Wash Wipe Operation
Conditions:
• INT disconnected.
• CONT disconnected or connected to ground.
In this condition, the circuit will respond to the switching of
W/W to V
after a time T1 (see T1 Debounce Timing). If
bb
b1
b1
W/W is disconnected or connected to ground before the end
of T1; no action will be taken. After a time T1; the circuit will
perform as shown on Figure 3. The output will turn on and
remain on for the duration of W/W. When W/W becomes
the input to the oscillator period) when the oscillator is
oscillatingwithatimebaseoft and4xt to2x4xt ,when
b1 b2 b2
the oscillator is oscillating with a time base of t
.
b2
The following table summarizes all T1 debounce timings:
inactive, the output will remain on for T2 = 96 x 4 x t
.
b1
Condition
Debounce Time
Figure 3. Switching Waveform W/W Timing
INT Active
4 x t to 2 x 4 x t
b1
b1
b1
b1
b1
b2
INT Inactive
4 x t to 2 x 4 x t
b1
W/W
W/W Active When INT Inactive
4 x t to 2 x 4 x t
b1
W/W Active When INT Active During T3
W/W Active When INT Active During T4
4 x t to 2 x 4 x t
b1
4 x t to 2 x 4 x t
Out
b2
T1
T2
Two MC33197A Devices Using One Decoupling
Resistor and Capacitor
Two devices may be connected to the power source using
a common R1 resistor for protection against overvoltages. If
this is done it should be noted that the current flowing
through R1 is increased and hence the voltage drop across
R1 is increased.
Continuous Operation
In this condition, the circuit responds to the switching of
CONT to V . If CONT is connected to V , the output will
bb bb
turn on regardless of the state of any other input and remain
on so long as CONT is active. This command operates
directly on the relay output and does not interfere with any
other timing. Therefore, the circuit will not be reset to a
defined state.
4
MOTOROLA ANALOG IC DEVICE DATA
MC33197A
Overvoltage Protection
Application Information
In reference to the Block Diagram and Typical Application,
all of the foregoing operational cases require:
R1 ≥ 100 Ω, C1 ≥ 47 µF
The following is an example of timing calculations using
the following external components values:
R2 = 22 kΩ, R3 = 2.2 kΩ, C2 = 100 nF (Referring to Block
Diagram and Typical Application).
R3 ≥ 1.0 kΩ, R4 ≥ 4.7 kΩ, R5 ≥ 4.7 kΩ
The circuit will not operate during the transient conditions.
By using the above component values, the circuit will be able
Oscillator Time Base Calculation:
t
duration = t x 4 x R2 x C2 = 1 x 4 x 27e3 x 100e–9 =
b1
10.8 ms
duration_g (INT to Gnd) = t
b1
to sustain the following overvoltages on V
permanent damage:
without
bb
t
x R3 x C2 = 15.5 x 2.2e3
x R3 x C2 = 12.1 x 2.2e3
b2
x 100e–9 = 3.41 ms
duration_v (INT to V ) = t
b2g
1. +28 V for 5 minutes
2. –15 V for 5 minutes
3. –16 V cycled off for 1.0 minute
t
b2
x 100e–9 = 2.66 ms
bb
b2v
4. +80 V pulse decaying exponentially to 8.0 V in 400 ms
repeated 3 times at 1.0 minute intervals.
5. ± 300 V pulse decaying exponentially to 30 V in 300 ms
with a maximum energy of 1.0 Joule.
Intermittent timing calculation:
T3 = 16 x 4 x t duration = 16 x 4 x 10.8 ms = 691 ms
b1
T4 = 144 x 4 x t duration_g = 144 x 4 x 3.41 ms = 1.96 s
b2
6. ±100 V pulse decaying exponentially to 10 V in 2 ms.
(INT connected to Gnd)
T4 = 144 x 4 x t duration_v = 144 x 4 x 2.66 ms = 1.53 s
b2
Recommended External Component Values
(INT connected to V
)
bb
Below are the recommended component values to ensure
the device will operate properly, and that all specified
parameters will stay within their tolerances.
Wash wipe timing calculation:
T2 = 96 x 4 x t = 96 x 4 x 10.8 ms = 4.15 s
b1
T1 Debounce Time Calculation (see T1 Debounce Timing)
R1 should be greater than 100 Ω; recommended value of
220 Ω. R1 can be up to 500 Ω, but in this case the t
parameter could be out of it’s specified value (see Electrical
Characteristics and Note 1). Also, the minimum operating
voltage range should be greater than 8.0 V. The following
b2v
When oscillator is oscillating at t
:
b1
T1 minimum = 4 x t = 4 x 10.8 ms = 43.2 ms
b1
T1 maximum = 2 x 4 x t = 2 x 4 x 10.8 ms = 86.4 ms
b1
values should be adhered to:
10 kΩ ≤ R2 ≤ 68 kΩ
1.5 kΩ ≤ R3 ≤ 47 kΩ
R4 ≥ 4.7 kΩ
When oscillator is oscillating at t
b2:
T1 minimum (INT connected to Gnd, t
) = 4 x t = 4 x
b2g b2
3.41 ms = 13.6 ms
T1 maximum (INT connected to Gnd, t
2 x 4 x 3.41 ms = 27.3 ms
) = 2 x 4 x t =
b2g b2
R5 ≥ 4.7 kΩ
C1 ≥ 47 uF
47 nF ≤ C2 ≤ 470 nF
5
MOTOROLA ANALOG IC DEVICE DATA
MC33197A
OUTLINE DIMENSIONS
P SUFFIX
PLASTIC PACKAGE
CASE 626–05
ISSUE K
NOTES:
1. DIMENSION L TO CENTER OF LEAD WHEN
FORMED PARALLEL.
2. PACKAGE CONTOUR OPTIONAL (ROUND OR
SQUARE CORNERS).
8
5
3. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
–B–
MILLIMETERS
INCHES
1
4
DIM
A
B
C
D
F
G
H
J
K
L
M
N
MIN
9.40
6.10
3.94
0.38
1.02
MAX
10.16
6.60
4.45
0.51
1.78
MIN
MAX
0.400
0.260
0.175
0.020
0.070
0.370
0.240
0.155
0.015
0.040
F
–A–
NOTE 2
L
2.54 BSC
0.100 BSC
0.76
0.20
2.92
7.62 BSC
–––
1.27
0.30
3.43
0.030
0.008
0.115
0.300 BSC
–––
0.050
0.012
0.135
C
10
1.01
10
0.040
0.76
0.030
J
–T–
SEATING
PLANE
N
STYLE 1:
PIN 1. AC IN
M
2. DC + IN
3. DC – IN
4. AC IN
5. GROUND
6. OUTPUT
7. AUXILIARY
D
K
G
H
M
M
M
0.13 (0.005)
T
A
B
8.
V
CC
D SUFFIX
PLASTIC PACKAGE
CASE 751–05
(SO–8)
ISSUE N
NOTES:
–A–
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 0.15 (0.006)
PER SIDE.
5. DIMENSION D DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE DAMBAR
PROTRUSION SHALL BE 0.127 (0.005) TOTAL
IN EXCESS OF THE D DIMENSION AT
MAXIMUM MATERIAL CONDITION.
8
1
5
4
4X P
–B–
M
M
0.25 (0.010)
B
G
MILLIMETERS
INCHES
DIM
A
B
C
D
F
G
J
K
M
P
MIN
4.80
3.80
1.35
0.35
0.40
MAX
5.00
4.00
1.75
0.49
1.25
MIN
MAX
0.196
0.157
0.068
0.019
0.049
0.189
0.150
0.054
0.014
0.016
R X 45
F
C
SEATING
PLANE
–T–
1.27 BSC
0.050 BSC
K
J
M
0.18
0.10
0
0.25
0.25
7
0.007
0.004
0
0.009
0.009
7
8X D
0.25 (0.010)
M
S
S
T
B
A
5.80
0.25
6.20
0.50
0.229
0.010
0.244
0.019
R
6
MOTOROLA ANALOG IC DEVICE DATA
MC33197A
Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding
the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and
specificallydisclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters which may be provided in Motorola
datasheetsand/orspecificationscananddovaryindifferentapplicationsandactualperformancemayvaryovertime. Alloperatingparameters,including“Typicals”
must be validated for each customer application by customer’s technical experts. Motorola does not convey any license under its patent rights nor the rights of
others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other
applicationsintended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury
ordeathmayoccur. ShouldBuyerpurchaseoruseMotorolaproductsforanysuchunintendedorunauthorizedapplication,BuyershallindemnifyandholdMotorola
and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees
arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that
Motorola was negligent regarding the design or manufacture of the part. Motorola and
Opportunity/Affirmative Action Employer.
are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal
7
MOTOROLA ANALOG IC DEVICE DATA
MC33197A
How to reach us:
USA/EUROPE/Locations Not Listed: Motorola Literature Distribution;
JAPAN: Nippon Motorola Ltd.; Tatsumi–SPD–JLDC, 6F Seibu–Butsuryu–Center,
P.O. Box 20912; Phoenix, Arizona 85036. 1–800–441–2447 or 602–303–5454
3–14–2 Tatsumi Koto–Ku, Tokyo 135, Japan. 03–81–3521–8315
ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd.; 8B Tai Ping Industrial Park,
I51 Ting Kok Road, Tai Po, N.T., Hong Kong. 852–26629298
MC33197A/D
◊
相关型号：
©2020 ICPDF网 联系我们和版权申明