STPM066S datasheet(66/67 Pages) STMICROELECTRONICS

66 / 67 page

List of figures

Figure 1.

Simplified block diagram ............................................................. 2

Figure 2.

Functional block diagram ............................................................. 3

Figure 3.

Pin out (top view) .................................................................. 4

Figure 4.

SYNC IN/OUT in Active mode ........................................................ 17

Figure 5.

SYNCOUT output buffer ............................................................ 18

Figure 6.

Reset circuit diagram in ACTIVE mode .................................................. 18

Figure 7.

Fault function in active mode ......................................................... 19

Figure 8.

Watchdog behavior ................................................................ 20

Figure 9.

Watchdog timing if WD_REC_en = 1 .................................................... 21

Figure 10.

Watchdog timing if WD_REC_en = 0 .................................................... 21

Figure 11.

Watchdog Early, Safe and Late window diagram ............................................ 22

Figure 12.

VTSENSE vs. temperature........................................................... 23

Figure 13.

Refresh mode in bucks ............................................................. 24

Figure 14.

SPI word representation ............................................................ 25

Figure 15.

SPI diagram ..................................................................... 26

Figure 16.

SPI protocol diagram ............................................................... 26

Figure 17.

SPI Master...................................................................... 27

Figure 18.

Timing diagram................................................................... 28

Figure 19.

Structure of CRC generator .......................................................... 30

Figure 20.

State machine ................................................................... 43

Figure 21.

State machine for SEC UP ........................................................... 45

Figure 22.

OTP bit mapping.................................................................. 46

Figure 23.

OTP start-up state check ............................................................ 49

Figure 24.

Power up sequence (example with LDO disabled)........................................... 55

Figure 25.

Power down sequence (example with LDO disabled)......................................... 56

Figure 26.

VFQFPN-48 (7x7x1.0 mm - opt. D) package outline ......................................... 59

Figure 27.

VFQFPN-48 (7x7x1.0) marking information ............................................... 60

STPM066S

List of figures

DS12976 - Rev 2

page 66/67

STPM066S Datasheet(PDF) 66 Page - STMicroelectronics

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