L9914 datasheet(8/13 Pages) STMICROELECTRONICS

No de pièce	L9914

Description	All silicon automotive voltage regulator

PDF	13 Pages

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Fabricant	STMICROELECTRONICS [STMicroelectronics]

Site Internet	http://www.st.com

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Electrical specifications

L9914

8/13

DS4742 Rev 7

Figure 4. Setpoint voltage vs. L terminal signal

2.5

Diagnostic

Tj -35 °C to +150 °C unless otherwise specified.

2.5.1

Fault

The following table lists the conditions that cause the fault driver to function (L terminal now

switching between 0 V and VLSAT). To prevent L flicker, specific faults are required to be present

for TDELAY seconds before the fault driver is activated. This delay is indicated in the following

table.

Table 7. Diagnostic

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

VOV

Overvoltage(1)

16.5

TDELAY

Fault indication delay time

0.935

1.1

1.265

1. When the VGO voltage overcomes this value the MFDC is cancelled.

Table 8. Fault

Conditions

Delay

1. Key-on (RVC PWM signal acknowledgement)

2. Phase voltage < VP2 and VGO < setpoint

Yes

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