L9945 datasheet(148/151 Pages) STMICROELECTRONICS

148 / 151 page

List of tables

Table 1.

Pin list .......................................................................... 10

Table 2.

Absolute maximum ratings capability ..................................................... 13

Table 3.

Latch-up trials ..................................................................... 14

Table 4.

ESD performance .................................................................. 14

Table 5.

Thermal behavior................................................................... 16

Table 6.

Temperature ADC electrical characteristics ................................................. 17

Table 7.

Range of functionality ................................................................ 18

Table 8.

VDD5 supply block electrical characteristics ................................................ 20

Table 9.

VPS supply block electrical characteristics ................................................. 21

Table 10.

VPS ADC electrical characteristics ....................................................... 21

Table 11.

Charge pump electrical characteristics .................................................... 22

Table 12.

SDO pin electrical characteristics ........................................................ 23

Table 13.

Output status depending on control strategy and control input .................................... 25

Table 14.

Selection of gate charge/discharge currents ................................................ 25

Table 15.

Output pre-driver stages electrical characteristics............................................. 27

Table 16.

NONx signals in H-bridge configuration.................................................... 28

Table 17.

Truth table ....................................................................... 29

Table 18.

Dead time values ................................................................... 31

Table 19.

Output response in case of DIR transition .................................................. 31

Table 20.

Output response in case of NPWM transition ................................................ 31

Table 21.

H-bridge state for different DIS/NDIS and NRES ............................................. 32

Table 22.

tOFF selection ..................................................................... 36

Table 23.

OFF state diagnostic timings for H-Bridge .................................................. 36

Table 24.

Diagnostic strategy for peak & hold configuration ............................................. 38

Table 25.

Internal oscillator electrical characteristics .................................................. 40

Table 26.

Digital I/Os electrical characteristics ...................................................... 40

Table 27.

SPI quick look ..................................................................... 41

Table 28.

SPI electrical characteristics ........................................................... 43

Table 29.

SPI protocol ...................................................................... 44

Table 30.

SPI MOSI list...................................................................... 45

Table 31.

NDIS OV protection electrical characteristics ................................................118

Table 32.

HWSC timing characteristics .......................................................... 120

Table 33.

VPS UV detection electrical characteristics ................................................ 120

Table 34.

Charge pump undervoltage detection electrical characteristics................................... 121

Table 35.

CC timings ...................................................................... 122

Table 36.

Diagnostic codes .................................................................. 123

Table 37.

Selection of fast shutdown currents in case of OC detection .................................... 124

Table 38.

OC sensing strategy................................................................ 125

Table 39.

Overcurrent threshold selection electrical parameters ......................................... 126

Table 40.

OC threshold selection .............................................................. 127

Table 41.

OC detection timings ............................................................... 128

Table 42.

Temperature compensation ........................................................... 129

Table 43.

Diagnostic filter time selection for OFF state ............................................... 134

Table 44.

Deglitch filter time for OFF state diagnostics ............................................... 135

Table 45.

OFF state diagnostic thresholds........................................................ 135

Table 46.

Open Load output voltage ............................................................ 136

Table 47.

Vout regulator current capability IDIAG .................................................... 136

Table 48.

Fast charge/discharge current generator electrical characteristics ................................ 138

Table 49.

Diagnostic pulses timings ............................................................ 139

Table 50.

Summary of disable sources and faults................................................... 139

Table 51.

Response frames to signal integrity requests ............................................... 140

L9945

List of tables

DS12275 - Rev 8

page 148/151

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