L9788 datasheet(32/264 Pages) STMICROELECTRONICS

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Operation behavior

L9788

32/264

DS12308 Rev 4

When VB_STBY_UV happens, it stops the counter.

The counter will resume when vb_stby_uv goes low (no undervoltage).

Table 11. VB_STBY pins electrical characteristics

Symbol

Parameter

Test condition

Min Typ Max Unit

VVB_STBY_Th

VB_STBY voltage

range that EOT counter

keep data or operating

correctly

3.5

VB_STBY

IVB_STBY_EOT_disable

VB_STBY current with

EOT 32 kHz Clock

device OFF

3.5 < VB_STBY< 18 V

VB_CAN < 0.7 V

µA

VB_STBY

IVB_STBY_ EOT_enable

VB_STBY current with

EOT 32 kHz Clock

device ON

3.5 < VB_STBY< 18 V

VB_CAN < 0.7 V

-40 °C < Tamb < 80 °C

µA

VB_STBY

IVB_STBY_EOT_enable

VB_STBY current with

EOT 32 kHz Clock

device ON

3.5 < VB_STBY< 18 V

VB_CAN < 0.7 V



80 °C < Tamb < 125 °C

µA

VB_STBY

EOT_clock_frequency

Freq EOT 32 kHz Clock

internal components

6 V < VB_STBY <18 V

-40° C <Tamb < 80 °C

-6%

+6%

VB_STBY

EOT_clock_frequency

Freq EOT 32 kHz Clock

internal components

6 < VB_STBY < 18 V



80 °C < Tamb < 125 °C

-7%

+7%

VB_STBY

VB_STBY_UV

VB_STBY under

voltage threshold the

32 kHz clock is active

but counter is stopped

during crank.

VB_STBY > 3.1 V

3.5

VB_STBY

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