L9177ATR datasheet(50/55 Pages) STMICROELECTRONICS

50 / 55 page

Revision history

Table 36. Document revision history

Date

Revision

Changes

20-Sep-2017

Initial release.

29-Sep-2017

Updated Table 1. Pin function pin 27 column "Class" from SIGNAL to PWR;

Updated Section 2.1.1 Supply voltage;

Changed titles: Section 3.5.6 Stepper motor driver OFF diagnosis (EN signal low and

output in high impedance state) and Section 3.5.7 Stepper motor driver ON diagnosis

(EN signal high and output driven by input commands);

Updated "Notes" in the Table 4. ESD protection;

Updated unit of "T_key_deglitch" parameter" in Table 7. Key electrical characteristics

and "R_pull" in Table 8. Digital pins characteristics.

05-Dec-2017

Corrected typos in the titles of the sections: Section 3.5.6 Stepper motor

driver OFF diagnosis (EN signal low and output in high impedance state) and

Section 3.5.7 Stepper motor driver ON diagnosis (EN signal high and output driven

by input commands).

Updated Table 1. Pin function.

Substituted in the datasheet (texts, tables and drawings) "Vdd" with "VDD".

Updated: Figure 5. 5 V main regulator block diagram; Section 2.5.9 High

side switch; Figure 10. Low-side driver block diagram; Figure 16. SO loading for

disable time measurement; Figure 17. SPI timing diagram; Section 3.4.1 Data in

(DIN); Section 3.4.2 Data out (DOUT); Section 3.5.3 Undervoltage shut down;

Section 5.1 Bill of material.

26-Nov-2018

Updated:

Section Description; Section 2.1 Operating range; Section 2.2 Absolute

maximum ratings; Table 8. Digital pins characteristics; Figure 5. 5 V main regulator

block diagram; Figure 3. Input threshold; Table 17. Current limited LSD driver

characteristics; Section 3.5.5 Current limited low side driver on/off diagnosis;

Figure 17. SPI timing diagram; Figure 19. Power-up sequence; Figure 20. Power-

down sequence; Section 3.4.1 Data in (DIN); Figure 21. An example of under and

over voltage time diagram; Section 3.5.8 VRS diagnosis; Figure 38. Application

circuit; Table 34. Bill of material.

Changed in all document "LAMP" pin in "L" (Current limited LSD). Updated

Section 2.5 Electrical characteristics.

17-Nov-2020

Removed L9177A Order code in cover page.

L9177A

DS12175 - Rev 5

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