L9177 datasheet(10/49 Pages) STMICROELECTRONICS

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Electrical specifications

L9177

10/49

DocID17617 Rev 1

Electrical specifications

3.1

Operating range

The device may not operate properly if maximum operating conditions are exceeded.

3.2

Absolute maximum ratings

Maximum ratings are absolute ratings; exceeding any one of these values may cause

permanent damage to the integrated circuit.

Table 3. Operating conditions

Symbol

Parameter

Value

Unit

Supply voltage

6 to 18(1)

1. Below 3.9 V the device is in a safety state (internal circuitries are on but all the outputs are off).

From 3.9 V to 5.5 V (cranck functionality)

Reset function; VDD > 3.3 V (rds-on state) IVDD=100mA; 3.3 V<VDD_TRK<VDD (rds-on state);

Low-sides, K-Line, H-Bridge OFF if Reset = 0; SPI not available, internal registers resetted if Reset = 0;

All Diagnosis disabled if Reset=0; VRS function limited (Vdiff max =1000mV).

From 5.5 V to 6 V (low battery)

All the functions are granted with the following degraded parameters; VDD5>4.510V; VDD Reset

function guaranteed, but no Reset asserted; Tracking error < 100 mV (Iload = 40 mA, rds-on state).

From 18 V to VB_off (load dump transient)

All the functions are granted with increased power dissipation and no reset is asserted during transient.

From VB_off to 40 V (internal circuitries are on but all the outputs are off)

The device is on in a safety state.

I/O logic

0 to Vdd

Stepper motor outputs

-0.3 to Vb+

Low side

-0.3 to clamp

voltage

Table 4. Absolute maximum ratings

Parameter

Condition

Min

Max

Unit

DC supply voltage

pin VB/VB_1

-0.3

I/O low voltage pins(1)

-0.3

I/O low voltage digital

pins(2)

-0.3

Vdd+0.3

I/O power pins(3) voltage

range

-0.3

Clamp voltage

TACH pin

-0.3

OUTA-D

-0.3

VB +0.3

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