L9800 datasheet(8/55 Pages) STMICROELECTRONICS

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Product characteristics

4.1

Operating range

Within the operating range, the part operates as specified and without parameter deviations. The device may not

operate properly if maximum operating conditions are exceeded.

Exceeding operating conditions and going back within, the part recovers with no damage or degradation.

Additional supply voltage and temperature conditions are given separately at the beginning of each electrical

specification table.

All voltages are related to the GND ground pin.

Table 3. Operating conditions

Symbol

Description

Min.

Typ.

Max.

Unit

Operating ranges

VBATT

Supply voltage range for normal operations

Upper supply voltage range for extended operations

Load dump voltage range for extended operations

Lower supply voltage range for extended operations

Supply voltage range for normal operations while shorted externally to VDDIO

5.5

VDDIO

Logic supply voltage

5.5

Operating junction temperature range

-40

150

°C

4.1.1

Supply voltage ranges

The device operates on the 12 V system. Transient operation for these systems can reach 40 V maximum.

Particular care has to be taken in PCB manufacturing to keep thermal dissipation to a reasonable level.

•

For VBATT < 3 V, if VDDIO is included in its operative range, the device is in a safety state (internal

circuitries are on but all the outputs are off). VS_UV function can be disabled by VS_UV_MASK bit of the

CFG_0 register.

•

For VBATT up to 40 V, all the functions are granted with increased power dissipation and no reset is

asserted during the transient.

For detailed functionality description, refer to the Table 9.

4.2

Absolute maximum ratings

Maximum ratings are absolute ratings; exceeding any one of these values may cause permanent damage to the

integrated circuit.

All voltages are related to the potential at the ground pin (GND).

Table 4. Absolute maximum rate capabilities

Symbol

Description

Min.

Typ.

Max.

Unit

AMR - supplies

VBATT

Battery voltage

-16

VDDIO

I/O voltage

-0.3

VBATT(LD)

Supply voltage in load dump

VBATT(SC)

Supply voltage in short circuit (single pulse)

VDS0

Voltage at power transistor OUT0

-0.3

VDS(CL)

VDS7

Voltage at power transistor OUT7

-0.3

VDS(CL)

VOUT07S

Power transistor source voltage OUT07

-0.3

0.3

L9800

Product characteristics

DS14041 - Rev 2

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