STPM066S datasheet(62/67 Pages) STMICROELECTRONICS

62 / 67 page

Contents

Overview ..........................................................................2

1.1

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

1.2

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

Pins description ...................................................................4

Electrical specifications ...........................................................6

3.1

Absolute maximum ratings & operating voltage ..................................... 6

3.2

Thermal data .................................................................. 7

3.2.1

Thermal resistance ....................................................... 7

3.2.2

Thermal warning and protection ............................................. 7

3.3

Electrical characteristics......................................................... 8

Functional description ............................................................14

4.1

Programming by OTP .......................................................... 14

4.2

Voltage regulators and features description........................................ 14

4.2.1

Pre-regulator BUCK ..................................................... 14

4.2.2

BOOST ............................................................... 15

4.2.3

LDO ................................................................. 16

4.2.4

VREF ................................................................ 16

4.2.5

ADC ................................................................. 16

4.2.6

Wake up pin (WKUP) .................................................... 16

4.2.7

Synchronizing pin (SYNC in/out) ............................................ 17

4.2.8

Reset and Fault......................................................... 18

4.2.9

Configurable watchdog and reset ........................................... 20

4.2.10

Under-Voltage, Over-Voltage and Power-Good................................. 22

4.2.11

Temperature control and VBATx voltage through internal ADC ..................... 22

4.2.12

Maximum Duty Cycle and Refresh Mode for Buck .............................. 24

4.2.13

Frequency-Hopping Spread Spectrum ....................................... 24

SPI format and register mapping ..................................................25

5.1

SPI frame CRC generator ...................................................... 30

5.2

SPI registers mapping ......................................................... 31

5.2.1

SPI REG BUCK ........................................................ 31

STPM066S

Contents

DS12976 - Rev 2

page 62/67

STPM066S Datasheet(PDF) 62 Page - STMicroelectronics

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