L9918 datasheet(108/109 Pages) STMICROELECTRONICS

108 / 109 page

List of figures

Figure 1.

Simplified application diagram ......................................................... 2

Figure 2.

Pins connection diagram (top view) ...................................................... 3

Figure 3.

Simplified block diagram ............................................................. 6

Figure 4.

L9918 finite state machine diagram ...................................................... 8

Figure 5.

Set point voltage tolerance versus temperature: example with 14V set point (VBSPLINRG or VBSPDEF). .... 14

Figure 6.

Dependency between B+ and EXC duty cycle in case of P_ANT regulation and I_ANT variation ........... 16

Figure 7.

Thermal compensation ............................................................. 16

Figure 8.

Low voltage function behavior ........................................................ 18

Figure 9.

Battery voltage range .............................................................. 18

Figure 10.

PH frequency calculation using adaptive PH thresholds calculation ............................... 23

Figure 11.

Load response control .............................................................. 27

Figure 12.

Pre-excitation specific mode: example 1 ................................................. 28

Figure 13.

Pre-excitation specific mode: example 2 ................................................. 29

Figure 14.

Excitation high side power MOS current measurement: working principle ........................... 30

Figure 15.

PENTAWATT In Line package outline ................................................... 47

L9918

List of figures

DS13000 - Rev 2

page 108/109

L9918 Datasheet(PDF) 108 Page - STMicroelectronics