Automotive Direction
Indicator
This device was designed for use in conjunction with a relay in automotive
applications. It is also applicable for other warning lamps such as “handbrake
ON,” etc.
• Defective Lamp Detection
• Overvoltage Protection
• Short Circuit Detection and Relay Shutdown to Prevent Risk of Fire
• Reverse Battery Connection Protection
• Integrated Suppression Clamp Diode
Order this document by UAA1041B/D
UAA1041B
AUTOMOTIVE DIRECTION
INDICATOR
SEMICONDUCTOR
TECHNICAL DATA
8
1
NO SUFFIX
PLASTIC PACKAGE
CASE 626
Figure 1. Typical Automotive System
C2
–VCC
1
8
+V
RS
2
7
UAA1041
–V
3
C1 +
6
4
5
R2
R1
R3
Relay
S1
L1
L
R
S2
L6
L2 L3
L4 L5
L1: 1.2 W, warning light handbrake ON
L2, L3, L4, L5: 21 W, turn signals
R1 = 75 k
R2 = 3.3 k
R3 = 220 Ω
RS = 30 mΩ
C1 = 5.6 µF
C2 = 0.047 µF
MOTOROLA ANALOG IC DEVICE DATA
8
1
D SUFFIX
PLASTIC PACKAGE
CASE 751
(SO–8)
PIN CONNECTIONS
–VCC 1
+Vbat 2
RLY Out 3
Oscillator 4
8 Start
7 Fault Det
6 Fault Det On/Off
5 Oscillator
(Top View)
ORDERING INFORMATION
Device
Operating
Temperature Range
Package
UAA1041BD
SO–8
UAA1041B TA = – 40° to +100°C Plastic DIP
© Motorola, Inc. 1996
Rev 0
1