L9026 datasheet(59/60 Pages) STMICROELECTRONICS

59 / 60 page

List of figures

Figure 1.

Block diagram .................................................................... 2

Figure 2.

HTSSOP24 Application schematic ...................................................... 3

Figure 3.

VFQFPN32 Application schematic....................................................... 4

Figure 4.

HTSSOP-24 pinout diagram ........................................................... 5

Figure 5.

VFQFPN32 pinout diagram ........................................................... 6

Figure 6.

State diagram.................................................................... 15

Figure 7.

Transition times block diagram ........................................................ 18

Figure 8.

HS driver (left) and LS driver (right) configuration ........................................... 21

Figure 9.

Switching resistive loads ............................................................ 22

Figure 10.

Output clamp concept .............................................................. 22

Figure 11.

Bulb inrush mode ................................................................. 23

Figure 12.

Driving tree ..................................................................... 25

Figure 13.

Overload thresholds ............................................................... 29

Figure 14.

Latch off in overload condition ........................................................ 30

Figure 15.

OFF diagnosis circuit............................................................... 34

Figure 16.

Open load at ON circuit ............................................................. 35

Figure 17.

Possible system configuration during normal operating conditions ................................ 37

Figure 18.

Possible system configuration during Limp mode ........................................... 38

Figure 19.

SPI out-of-frame protocol ............................................................ 39

Figure 20.

SPI Daisy chain configuration ......................................................... 40

Figure 21.

SPI message in daisy chain configuration ................................................ 40

Figure 22.

SPI timing diagrams ............................................................... 41

Figure 23.

VFQFPN32 (5x5x1 mm exp. pad down 3.5x3.5) package outline ................................ 49

Figure 24.

HTSSOP24 (7.8x6.4x1 mm exp. pad down 5.0x3.2) package outline .............................. 52

Figure 25.

HTSSOP24 (7.8x4.4x1.1 mm exp. pad down 5.0x3.2) recommended footprint ....................... 54

L9026

List of figures

DS13397 - Rev 9

page 59/60

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