L9468

4/8

Figure 5. Setpoint Voltage vs. Tcase Temperature

Table 6. Diagnostic (Tcase -35°C to +150°C unless otherwise specified)

Notes:

4. When Fail Soft operation is detected, regulation sensing will switch from the "S" terminal to the VGO terminal.

5. This condition can happen when the connection between the battery and VGO or the output terminal of the generator is broken.

In this case the delay of 1.1 seconds is not required.

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

VFSO

Failsafe Output Voltage

Voltage measured at VGO

20

20.48

21

V

VFSL

Switch sensing from S to VGO

"S" Voltage falling into Fail Soft 4

44.2

V

VFSH

Switch sensing from VGO to S

"S" Voltage rising out of Fail Soft

7.6

8

V

IS

Sink current @ "S" pin

VS = 14 V

1

1.75

2.5

mA

VUV

Undervoltage

grpm > 3100 ± 15%

10.95

11.35

11.6

V

VOV

Overvoltage

VS+1

VS+1.25

VS+1.55

V

VLSAT

Lamp saturation voltage

IL = 0.5A

1.33

1.4

V

VLSAT

Lamp on Voltage 5

IL < 0.5A,VGO=open, Tcase =

25°C

3.8

5

V

TDELAY

Fault Indication Delay Time

0.935

1.1

1.265

s

0

20

40

60

80

100

120

Tcase(˚C)

-40

13.0

13.2

13.4

13.6

13.8

14.0

14.2

14.4

14.6

14.8

15.0

15.2

15.4

15.6

15.8

VS

(V)

-20

D02AT506

15.9

15.45

15.05

14.35

14.1

13.85

14

13.65

13.35

14.8

14.55

15