L9678P datasheet(177/215 Pages) STMICROELECTRONICS

177 / 215 page

DS11626 Rev 9

177/216

L9678P, L9678P-S

Electrical characteristics

214

16.3

Internal regulators

All electrical characteristics are valid for the following conditions unless otherwise noted:

-40 °C  Ta  +95 °C, VINGOOD1(max)  VIN  35 V.

16.4

Oscillators

All electrical characteristics are valid for the following conditions unless otherwise noted.

-40 °C  Ta  +95 °C, 3.14  CVDD  3.46.

Table 19. Internal regulators DC specifications

N°

Symbol

Parameter

Condition

Min. Typ. Max. Unit

VOUT_VINT3V3 VINT3V3 output voltage -

3.14

3.3

3.46

VOV_VINT3V3

VINT3V3 over voltage

3.47

3.7

VUV_VINT3V3

VINT3V3 under voltage

2.97

3.13

VOUT_VDD

VDD output voltage

3.14

3.3

3.46

IOUT_VDD

VDD current capability

External Load is not allowed

ILIM_VDD

VDD current limit

VOV_VDD

VDD over voltage

3.47

3.7

VUV_VDD

VDD under voltage

2.7

2.9

CVDD

VDD output capacitance Design Info

100

140

Table 20. Internal regulators AC specifications

N°

Symbol

Parameter

Condition

Min.

Typ.

Max.

Unit

TFLT_ VINT_VDD_OV

Internal regulator OV

Deglitch filter time

µs

TFLT_ VINT_VDD_UV

Internal regulator UV

Deglitch filter time

Table 21. Oscillators AC specifications

Symbol

Parameter

Conditions / Comments

Min.

Typ.

Max. Unit

fOSC

Main oscillator average

frequency

15.2

16.8 MHz

fMOD_OSC

Main oscillator

modulation frequency

SPI_CLK_CNF(MAIN_SS_DIS=0)

Design Info

MHz

IMOD_OSC

Main oscillator

modulation index

SPI_CLK_CNF(MAIN_SS_DIS=0)

fAUX

Aux oscillator average

frequency

7.125

7.5

7.87

MHz

fMOD_AUX

Aux oscillator

modulation frequency

SPI_CLK_CNF(AUX_SS_DIS=0)

Design Info

MHz

ƒOSC

128

---------------

ƒOSC_AUX

128

----------------------------

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