U4791B datasheet(3/5 Pages) TEMIC

Part #	U4791B

Description	Automotive Lamp Outage Monitor, VT = 53 mV

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Manufacturer	TEMIC [TEMIC Semiconductors]

Direct Link	http://www.temic.de

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U4791B

TELEFUNKEN Semiconductors

Rev. A2, 17-Dec-96

3 (5)

Electrical Characteristics

VS = 9 to 15 V, Tamb = –40 to +95 °C, figure 1, unless otherwise specified

Parameters

Test Conditions / Pin

Symbol

Min

Typ

Max

Unit

Supply voltage

Pin 2,7

VS

9

15

V

Internal Z-diode Z2

Pin 2

VZ

20

V

Current consumption

VS = 12 V

Pin 1

measured at Pin 1 (GND)

I1

4.5

6

mA

Output saturation voltage

VS = 9 V, I3,5 = 10 mA

Tamb = 25 °C

Pin 3,5

Vsat

0.5

V

Output Z-diodes Z3, Z5

Pin 3,5

VZ

21

V

Control signal threshold

Reference point Pin 7 (V7)

I3,5 = 1 mA

Pin 4,6

VS = 12 V

VS = 15 V

–VT

51.5

57

53.5

59

55.5

61

mV

Voltage drift

DV +

V

T(15V) * VT(12V)

15 V

* 12V

Pin 4,6

DV

1.8

mV/V

Threshold voltage

Switch identification Pin 8

V8

0.6 VS

V

Input currents

Pin 4,6

II

100

nA

Pin 8

5

mA

Delay time

Switch-on

Pin 3,5

High to low

td(on)

6

ms

Switch-off

Low to high

td(off)

30

ms

12.00

11.90

12

V4,6

V0

td(off)

td(on)

10

20

30

40

50

60

ms

0

t

95 10614

V

6

Figure 2.

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