L9945 datasheet(145/151 Pages) STMICROELECTRONICS

145 / 151 page

Contents

Block diagram .....................................................................3

Applications .......................................................................4

2.1

High-Side / Low-Side, with configurable FET type (N channel or P channel) ............. 4

2.2

Peak & Hold................................................................... 6

2.3

H-Bridge ...................................................................... 7

Device pins........................................................................9

3.1

Pinout ........................................................................ 9

3.2

Pin names and functions ........................................................ 9

Product electrical and thermal characteristics.....................................13

4.1

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

4.2

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

4.3

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

4.4

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

4.4.1

Temperature ADC ....................................................... 17

4.5

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

Functional description ............................................................19

5.1

General description............................................................ 19

5.2

Supply concept ............................................................... 19

5.2.1

VDD5 supply block ...................................................... 19

5.2.2

VPS supply block ....................................................... 20

5.2.3

VPS ADC ............................................................. 21

5.2.4

Charge pump (VGBHI) ................................................... 21

5.2.5

VIO supply pin & SDO pin characteristics ..................................... 22

5.3

Reset ....................................................................... 23

5.4

Output pre-drivers ............................................................. 24

5.4.1

Available configurations .................................................. 24

5.4.2

Default configuration and output enable ...................................... 24

5.4.3

Output control .......................................................... 24

5.4.4

Gate charge/discharge currents ............................................ 25

L9945

Contents

DS12275 - Rev 8

page 145/151

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