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MC33197 Datasheet

AUTOMOTIVE WASH WIPER TIMER

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MC33197
Advance Information
Automotive Wash Wiper Timer
The MC33197 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 MC33197 requires very few external components for full
system implementation. The intermittent control pin can be switched to
ground or Vbat to meet a large variety of possible applications. The
intermittent timing can be fixed or adjustable via an external resistor. The
MC33197 is built using bipolar technology and parametrically specified over
the automotive ambient temperature range and 8.0 to 16 V supply voltage.
The MC33197 can operate in both front and rear wiper applications.
Adjustable Time Interval of Less Than 500 ms to More Than 30 s
Intermittent Control Pin Can Be Switched to Ground or Vbat
Adjustable After Wipe Time
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
For Front Wiper and Rear Wiper Window Applications
Device
MC33197D
MC33197P
ORDERING INFORMATION
Operating
Temperature Range
TA = – 40° to +105°C
TA = – 40° to +125°C
Package
SO–8
DIP–8
AUTOMOTIVE WASH
WIPER TIMER
SEMICONDUCTOR
TECHNICAL DATA
8
1
P SUFFIX
PLASTIC PACKAGE
CASE 626
8
1
D SUFFIX
PLASTIC PACKAGE
CASE 751
(SO–8)
PIN CONNECTIONS
MAXIMUM RATINGS
Rating
Continuous Supply Voltage (VPin 6)
Storage Temperature
Thermal Resistance (Junction–to–Ambient)
DIP–8 Package
SO–8 Package
Operating Ambient Temperature Range
DIP–8 Package
SO–8 Package
Operating Junction Temperature Range
Maximum Junction Temperature
Symbol
VCC
Tstg
RθJA
TA
TJ
TJ(max)
Value
16
–55 to +150
100
145
–40 to +125
–40 to +105
–40 to +150
150
Unit
V
°C
°C/W
°C
°C
°C
INT
Osc2
Osc1
CONT
1
2
3
4
8 Out
7 Gnd
6 VCC
5 W/W
(Top View)
(SO–8)
Osc1
CONT
W/W
VCC
1
2
3
4
8 Osc2
7 INT
6 Out
5 Gnd
(Top View)
This document contains information on a new product. Specifications and information herein are
subject to change without notice.
MOTOROLA ANALOG IC DEVICE DATA
© Motorola, Inc. 1996
1


Motorola Electronic Components Datasheet

MC33197 Datasheet

AUTOMOTIVE WASH WIPER TIMER

No Preview Available !

Vbb
Int
Switch
Gnd
MC33197
Representative Block Diagram
C1
Variable Current Sources
R1
VCC MC33197
Out
Vbb
Wiper
Motor
Relay
R1 = 220
R2 = 22 k
R3 = 1.5 to 22 k
R4 = 4.7 k
R5 = 4.7 k
C1 = 47 µF
C2 = 100 nF
R3 INT
Osc2
C2
Osc1
R2
Ref Input Logic
Comparator
Input Comparator
Gnd with Hysteresis
W/W
Ref
Ref
CONT
Water Pump Motor
R4
Vbb
M
R5 Cont Switch
This device contains 390 active transistors.
ELECTRICAL CHARACTERISTICS (–40°C TA +125°C, 8.0 V VCC 16 V, unless otherwise noted. Typical values reflect approxi-
mate mean at TA = 25°C with VCC = 14 V at the time of initial device characterization.)
Characteristic
Symbol Min Typ Max Unit
Functional Supply Voltage Range
Operating Supply Voltage Range
Standby Supply Current (VCC = 16 V, R2 = 68 k)
Supply Current INT Active (R3 = 2.5 k)
Supply Current Relay “On” (R2 = 68 k)
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)
10 V Vbb 16 V
8.0 V Vbb 16 V
Relay Resistance
Output Voltage (Iout = 200 mA)
Output Clamp Voltage (Iout = 20 mA)
Oscillator Period Coefficient (TA = 25°C)
Vbb = 13 V (Note 3)
Vbb = 13 V (INT Connected to Gnd) (Note 4)
Vbb = 13 V (INT Connected to Vbat, R1 = 220 ) (Note 4)
CONT Threshold (VCC = 13 V)
CONT Threshold (VCC = 16 V)
VCCF
VCCOP
ICC
ICC
ICC
ICC
Kosc
RL
Vout
Vcl
tb1
tb2g
tb2v
Vih
Vih
8.0 –
18
8.0 –
16
– 4.0 5.2
– 7.0 8.4
– 7.5 11.2
– 10 14.5
– 10
– 15
60 –
– 0.9
19.5 –
1.5
22
0.98 1.0 1.03
15.1 15.5 15.9
11.5 12.1 12.7
6.0 – 8.5
– VCC/2 –
V
V
mA
mA
mA
mA
%
V
V
V
V
NOTES: 1. The oscillator frequency is defined by the current flowing through the external resistor R2. The voltage at the INT pin is (VCC/2 – Vbe) and hence the
current flowing through R3 is different if R3 is connected to Vbb or to Gnd because of the voltage drop across resistor R1. This voltage drop causes
the oscillator coefficient for tb2 to be different for the two cases of INT terminated to Gnd or to Vbb. Because of this, the oscillator coefficient is speci–
fied with a specific value of R1 whenever INT is connected to Vbb. If R1 is changed, the coefficient will change. Also, any extra current through the
resistor R1 other than the current used by the device will cause timing deviations in tb2 timings (as in the case where two devices are sharing a
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 tb1 duration is given by coefficient 4 x R2 x C2 (tb1 duration = tb1 x 4 x R2 x C2).
4. The tb2 duration is given by coefficient x R3 x C2 (tb2 duration = tb2 x R3 x C2).
2 MOTOROLA ANALOG IC DEVICE DATA


Part Number MC33197
Description AUTOMOTIVE WASH WIPER TIMER
Maker Motorola
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MC33197 Datasheet PDF






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