2

Maximum ratings

2.1

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 substrate ground (SUBGND0 and SUBGND1).

Table 2. Absolute maximum ratings

Symbol

Parameter

Min

Typ

Max

Unit

VBATMON

Battery monitor for wake up

-18(1)

-

40

V

VBATSENSE

Battery sense input

-18(1)

-

40

V

VIN

Battery input voltage

-1(2)

-

40

V

WAKEUP

Wake-up control input

-1

-

40

V

ERDCHSW

Energy reserve discharge path

-0.3

-

40

V

ERCHSW

Energy reserve charge path

-0.3

-

40

V

ERBST

Energy reserve boost output voltage

-0.3

-

40

V

AGND

Analog ground

-0.3

-

0.3

V

SYSBST

System boost output voltage

-0.3

-

40

V

SATBCKSW

Satellite buck switching output

-0.3

-

40

V

SATBCKGND

Satellite buck ground

-0.3

-

0.3

V

SPI_MISO_RS

Remote sensor SPI data out/snooping input

-0.3

-

min (VCCBCK + 0.3, 4.6)

V

SPI_MOSI_RS

Remote sensor SPI data in

-0.3

-

min (VCCBCK + 0.3, 4.6)

V

SPI_SCLK_RS

Remote sensor SPI clock

-0.3

-

min (VCCBCK + 0.3, 4.6)

V

SPI_CS_RS

Remote sensor SPI chip select

-0.3

-

min (VCCBCK + 0.3, 4.6)

V

SPI_MISO_G

Global SPI data out/snooping input

-0.3

-

min (VCCBCK + 0.3, 4.6)

V

SPI_MOSI_G

Global SPI data in

-0.3

-

min (VCCBCK + 0.3, 4.6)

V

SPI_SCLK_G

Global SPI clock

-0.3

-

min (VCCBCK + 0.3, 4.6)

V

SPI_CS_G

Global SPI chip select

-0.3

-

min (VCCBCK + 0.3, 4.6)

V

CLKIN

External clock input

-0.3

-

min (VCCBCK + 0.3, 4.6)

V

ARM_CS_G

Arm status capture input (on global SPI)

-0.3

-

20(3)

V

SATBCK

Satellite buck output voltage

-0.3

-

20

V

VCCBCKSW

VCC buck switching output

-0.3

-

20

V

VCCBCKGND

VCC buck ground

-0.3

-

0.3

V

VCCBCK

VCC buck output voltage

-0.3

-

4.6

V

SPI_CS_SAF4

SPI safing sensor chip select 4

-0.3

-

min (VCCBCK + 0.3, 4.6)

V

SPI_CS_SAF3

SPI safing sensor chip select 3

-0.3

-

min (VCCBCK + 0.3, 4.6)

V

SPI_CS_SAF2

SPI safing sensor chip select 2

-0.3

-

min (VCCBCK + 0.3, 4.6)

V

SPI_CS_SAF1

SPI safing sensor chip select 1

-0.3

-

min (VCCBCK + 0.3, 4.6)

V

SPI_CS_SAF0

SPI safing sensor chip select 0

-0.3

-

min (VCCBCK + 0.3, 4.6)

V

COVRACT

Crossover switch control input/ouput

-0.3

-

min (VCCBCK + 0.3, 4.6)

V

SUBGND0

Substrate ground 0 (fused with lead frame)

-0.3

-

0.3

V

LIN_RX

LIN bus receive data out

-0.3

-

min (VCCBCK + 0.3, 4.6)

V

L9690

Maximum ratings

DB4806 - Rev 2

page 8/24