L5958 데이터 시트보기 (PDF) - STMicroelectronics

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L5958

Multifunction voltage regulator for car radio

STMicroelectronics 

List of figures

List of figures

L5958

Figure 1.

Figure 2.

Figure 3.

Figure 4.

Figure 5.

Figure 6.

Figure 7.

Figure 8.

Figure 9.

Figure 10.

Figure 11.

Figure 12.

Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Flexiwatt27 (SMD and vertical) pin connection (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Regulator and power switch diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Timing chart Vbatt detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Timing chart 1.8 Vperm/3.3 Vperm and 1.8V sw/3.3 Vsw . . . . . . . . . . . . . . . . . . . . . . . . . 14

Reset and BU1 backup diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

BU2 backup diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Maximum ESR for stability (valid for all the regulator outputs) . . . . . . . . . . . . . . . . . . . . . . 15

Current limit of the power switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Flexiwatt27 (vertical) mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . . 17

Flexiwatt27 (SMD) mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . . . 18

4/20

Doc ID 17716 Rev 1

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