L9468(2013) 查看數據表（PDF） - STMicroelectronics

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L9468
(Rev.:2013)

ALL SILICON VOLTAGE REGULATOR

STMicroelectronics 

L9468

Figure 5. Setpoint Voltage vs. Tcase Temperature

VS

(V)

15.8

15.6

15.4

15.2

15.0

14.8

14.6

14.4

14.2

15.9

15.45

15

15.05

14.8

14.55

14.0

13.8

13.6

13.4

13.2

13.0

-40 -20

0

20

40

D02AT506

14.35

14.1

13.85

14

13.65

13.35

60

80 100 120 Tcase(˚C)

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

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

4

4.2

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

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.

4/8

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