14

4964B–AUTO–07/07

ATA6842

10

Relay Driver RDx, x = 1 to 4

10.1

Saturation voltage

low

T

T

RDx

Vs()lo

0.4

0.5

0.6

V

V

V

A

10.2

Short circuit current

low

V(RDx) = 2V to V12,

T < T

off

RDx

Isc()lo

250

300

400

mA

A

10.3 Leakage current

V(RDx) = 0V to 40V, T < T

off

RDx

Ilk()

–5

+5

µA

A

10.4

Free-wheeling

voltage

I(RDx) = 10 mA,

RDx = high,

L = 0.2H

RDx

Vf()

42

60

V

A

11

Watchdog

11.1 Upper window time

ROS = 100 k

Ω ±1%,

COS = 1 nF ±5%

WDT

Tu(WDT)

22.2

24.6

27

ms

A

11.2 Lower window time

ROS = 100 k

Ω ±1%,

COS = 1 nF ±5%

WDT

Tl(WDT)

16.4

18

19.8

ms

A

11.3 Watchdog timeout

ROS = 100 k

Ω ±1%,

COS = 1 nF ±5%

WDT

Tt(WDT)

59.7

64.6

71

ms

A

12

Warning Lamp WLN

12.1

Saturation voltage

low

I(WLN) = 20 mA,

WLN = low

WLN

Vs()lo

0.4

V

A

12.2

Short-circuit current

low

V(WLN) = 1V to V12,

WLN = low

WLN

Isc()lo

20

30

50

mA

A

12.3

Threshold current

high

WLN

Ith()hi

12

mA

A

12.4 Threshold current low

WLN

Ith()lo

8

mA

A

12.5

Hysteresis threshold

current

WLN

Ithhys

0.25

1.5

mA

A

12.6

Threshold voltage

detection

WLN

Vth()

2.25

2.75

V

A

12.7 Leakage current

V(WLN) = 0V to 40V,

WLN = high

WLN

Ilk()

–10

+10

µA

A

12.8 Overcurrent filter time

I(WLN) > Isc(WLN)lo,

T > T1

off

WLN

tfi()

100

200

µs

A

12.9 Fall time

V(WLN) from

high = 90% -> low = 10% V12

WLN

tf()

10

µs

B

12.10

Free-wheeling

voltage

I(WLN) = 10 mA, WLN = high,

L = 10 µH

WLN

Vf()

42

60

V

A

5.

Electrical Characteristics (Continued)

Operating conditions: V12 = 6.5V to 26V, V5 = 5V ±3%, RREF = 10 k

Ω ±2%, T

No. Parameters

Test Conditions

Pin

Symbol

Min.

Typ.

Max.

Unit

Type*

*) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter

Note:

1. Reduced operation mode means either

- Voltage at pin TCFET could be beyond specified limits