Motorola UAA1041BD, UAA1041B Datasheet

Device

Operating

Temperature Range

Package



SEMICONDUCTOR

TECHNICAL DATA

AUTOMOTIVE DIRECTION

INDICATOR

ORDERING INFORMATION

UAA1041BD
UAA1041B

TA = – 40° to +100°C

SO–8

Plastic DIP

PIN CONNECTIONS

Order this document by UAA1041B/D

D SUFFIX

PLASTIC PACKAGE

CASE 751

(SO–8)

NO SUFFIX

PLASTIC PACKAGE

CASE 626

8

1

8

1

Fault Det
Fault Det On/Off

(Top View)

–V

CC

RLY Out

Oscillator

+V

bat

1
2
3
4

8
7
6
5

Start

Oscillator

1

MOTOROLA ANALOG IC DEVICE DATA

 


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

Figure 1. Typical Automotive System

C2

R3

S2

L1

Relay

R1

R2

1
2
3

4

8
7
6

5

C1

+

S1

L

R

L4 L5L3L2

L6

+V

–V

R

S

UAA1041

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 m

Ω

C1 = 5.6 µF
C2 = 0.047

µ

F

–V

CC

 Motorola, Inc. 1996 Rev 0

UAA1041B

2

MOTOROLA ANALOG IC DEVICE DATA

MAXIMUM RATINGS

Rating Pin Value Unit

Current: Continuous/Pulse* 1

2
3
8

+150/+500

–35/–500

±350/1900
±300/1400

±25/50

mA

Junction Temperature T

J

150 °C

Operating Ambient Temperature Range T

A

–40 to + 100 °C

Storage Temperature Range T

stg

–65 to + 150 °C

Thermal Resistance, Junction–to–Ambient R

θJA

100 °C/W (Typ)

* One pulse with an exponential decay and with a time constant of 500 ms.

ELECTRICAL CHARACTERISTICS (T

1

= 25°C)

Characteristics

Symbol Min Typ Max Unit

Battery Voltage Range (normal operation) V

B

8.0 – 18 V

Overvoltage Detector Threshold (V

Pin2–VPin1

) D

th(OV)

19 20.2 21.5 V

Clamping Voltage (V

Pin2–VPin1

) V

IK

29 31.5 34 V

Short Circuit Detector Threshold (V

Pin2–VPin7

) D

th(SC)

0.63 0.7 0.77 V

Output Voltage (I

relay

= –250 mA) (V

Pin2–VPin3

) V

O

– – 1.5 V

Starter Resistance Rst = R2 + R

Lamp

R

st

– – 3.6 kΩ

{

Oscillator Constant (normal operation) Kn 1.4 1.5 1.6 –
Temperature Coefficient of Kn Kn – –1.5x10

–3

– 1/°C
Duty Cycle (normal operation) – 45 50 55 %
Oscillator Constant – (1 lamp defect of 21 W) K

F

0.63 0.68 0.73 –
Duty Cycle (1 lamp defect of 21 W) – 35 40 45 %
Oscillator Constant K1

K2
K3

0.167

0.25

0.126

0.18

0.27

0.13

0.193

0.29

0.14

–

Current Consumption (relay off)

Pin 1; at V

Pin2

– V

Pin1

= 8.0 V

Pin 1; at V

Pin2

– V

Pin1

= 13.5 V

Pin 1; at V

Pin2

– V

Pin1

= 18 V

I

CC

–

–2.5

–

–0.9
–1.6
–2.2

–

–1.0

–

mA

Current Consumption (relay on)

Pin 1; at V

Pin2

– V

Pin1

= 8.0 V

Pin 1; at V

Pin2

– V

Pin1

= 13.5 V

Pin 1; at V

Pin2

– V

Pin1

= 18 V

–

–
–
–

–3.8
–5.6
–6.9

–
–
–

mA

Defect Lamp Detector Threshold at V

Pin

2 to VB= 8.0 V

and R3 = 220 Ω = 13.5 V

= 18 V

V

Pin2–VPin7

V

Pin2–VPin7

V

Pin2–VPin7

–

79

–

68

85.3
100

–

91

–

mV

{āāSee Note 1 of Application Information