List of figures

L9915B

4/20

DocID027541 Rev 1

List of figures

Figure 1.

Application schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Figure 2.

Pin connection (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Figure 3.

Internal regulation curves versus temperature @ F duty cycle = 15% . . . . . . . . . . . . . . . . 10

Figure 4.

External regulation curve versus C duty cycle @ TJ = 30 °C and F duty cycle = 15% . . . . 10

Figure 5.

Cranking security function diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Figure 6.

Pin ‘C’ circuit and waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Figure 7.

Pin ‘C’ terminal signal diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Figure 8.

Pin ‘FM’ circuit and waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Figure 9.

Principle of phase regulation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Figure 10.

Retry time in case of over-current diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Figure 11.

Retry time in case of over-current duration > TLOC diagram . . . . . . . . . . . . . . . . . . . . . . . 16

Figure 12.

Multiwatt 8 (pin 5GND) package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17