U2481B datasheet(9/11 Pages) ETC

Part #	U2481B

Description	Automotive Lamp Outage Monitor

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TELEFUNKEN Semiconductors

U2481B/ U2482B

Preliminary Information

Rev. A1: 21.08.1995

9 (11)

Electrical Characteristics

Tamb = –40 to +100

_C, VBatt (Kl. 15) = 10 to 15 V, supply series resistors and input protection rsistors connected (see

figure 1 “block diagram” and figure 2 “basic application schematic”) unless otherwise specified.

Parameters

Test Conditions / Pins

Symbol

Min.

Typ.

Max.

Unit

Supply

Operating voltage

VBatt

9

16

V

Supply current

VBatt = 13 V, V14 = low

Pin 20

Pin 19

0.3

3

0.7

5

1.1

7

mA

Power on reset (POR)

Tamb = 25°C

Pin 19

VBatt (Kl. 15)

3.0

3.7

4.2

5.0

V

Comparators

Comparator input current

during switch over

VBatt = 13 V

Pins 27, 28

Pins 1, 2

Pins 24, 25

Pins 21, 22

Pin 7

Pins 6, 8, 9

Pin 11

Pins 10–12

Pin 4

Pins 3,5

I27, I28

I1, I2

I24, I25

I21, I22

I7

I6, I8, I9

I11

I10,I11,I12

I4

I3, I5

10

30

10

30

10

20

10

mA

Comparator thresholds VT1

of comparators K1 and K2

(VT1 = VRef... – VIN...)

VS = 10 V Pins 1, 2, 27, 28

VS = 13 V

VS = 15 V

VT1x

x = Pin No.

8.5

10.0

11.0

11.5

13.0

14.0

14.5

16.0

17.0

mV

Voltage characteristic

DVT1

0.5

mV/V

Temperature characteristic

DTT1

3900

ppm/

°K

Comparator thresholds VT2

of comparators K3 to K7

(VT2 = VRef... – VIN...)

Pins 6, 7, 8, 9

Pins 24, 25

Pins 3, 4, 5

Pins 21, 22

Pins 10, 11, 12

VS = 10 V

VS = 13 V

VS = 15 V

VT1x

x = Pin No.

1.5

2.0

2.3

3.0

3.5

3.8

4.5

5.0

5.3

mV

Voltage characteristic

DVT2

0.17

mV/V

Temperature characteristic

DTT2

3900

ppm/

°K

Min. comparator input

voltage for detection

all Ref-pins

VMin

0.33

VBatt

Output

Output current

VBatt = 13 V

Pin 14

I14

–10.0

mA

Output saturation voltage

Iout = –10 mA

Pin 19–Pin 14

VSat

1.0

1.5

V

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