STPMIC1APQR datasheet(132/140 Pages) STMICROELECTRONICS

132 / 140 page

Contents

Device configuration...............................................................2

Typical application schematic......................................................3

2.1

Recommended external components .............................................. 4

2.2

Pinout and pin description ....................................................... 5

Electrical and timing characteristics ...............................................7

3.1

Absolute maximum ratings....................................................... 7

3.2

Thermal characteristics ......................................................... 7

3.3

Consumption in typical application scenarios ....................................... 8

3.4

Electrical and timing parameters .................................................. 9

3.5

Application board curves ....................................................... 22

Power regulators and switch description..........................................27

4.1

Overview .................................................................... 27

4.2

LDO regulators ............................................................... 28

4.2.1

LDO regulators - common features .......................................... 28

4.2.2

LDO regulators - special features ........................................... 29

4.2.3

LDO output voltage settings ............................................... 30

4.3

DDR memory sub-system examples ............................................. 32

4.3.1

Powering lpDDR2/lpDDR3 memory ......................................... 32

4.3.2

Powering DDR3/DDR3L memory ........................................... 33

4.4

Buck converters............................................................... 33

4.4.1

BUCK general description ................................................. 33

4.4.2

BUCK output voltage settings .............................................. 38

4.5

Boost converter and power switches ............................................. 40

4.5.1

Boost converter......................................................... 40

4.5.2

PWR_USB_SW and PWR_SW power switches ................................ 41

4.6

USB sub-system examples ..................................................... 44

Functional description ............................................................47

5.1

Overview .................................................................... 47

5.2

Functional state machine ....................................................... 47

5.2.1

Main state machine diagram ............................................... 48

STPMIC1

Contents

DS12792 - Rev 7

page 132/140

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