L9945 datasheet(140/144 Pages) STMICROELECTRONICS

140 / 144 page

6.3.1

Behavior in case of OC detection .......................................... 116

6.3.2

Output re-engagement strategy after an OC event ............................. 117

6.3.3

OC sensing strategy .................................................... 117

6.3.4

OC threshold selection .................................................. 118

6.3.5

OC detection timings.................................................... 120

6.3.6

Temperature compensation for OC threshold ................................. 121

6.3.7

Battery compensation for OC threshold...................................... 122

6.3.8

Reading the compensated OC threshold..................................... 123

6.3.9

OC detection schematics ................................................ 123

6.4

OFF state diagnostics.........................................................125

6.4.1

Settling and deglitch filter times............................................ 126

6.4.2

Diagnostic thresholds ................................................... 127

6.4.3

Internal regulator for open load (OL) detection ................................ 127

6.4.4

Fast charge/discharge currents............................................ 128

6.5

Silent diagnostic pulses for static loads ..........................................130

6.6

Summary of disable sources and faults ..........................................131

6.7

Signal integrity check .........................................................132

Ordering information ........................................................... 133

Package information............................................................ 134

8.1

TQFP64 (10x10x1 mm exp. pad down) package information ........................134

Revision history ..................................................................... 137

L9945

Contents

DS12275 - Rev 10

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