STPMIC25 datasheet(17/145 Pages) STMICROELECTRONICS

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3.4.8

REFDDR (DDR_VREF)

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

REFDDR (sink-source)

VREFOUT

Output voltage

VOUT6/2

VVREF-ACC Output voltage accuracy

1.1 V < VOUT6 < 1.5 V, 100 µArms < ILDOOUT < 5 mArms

-1

IREFOUT

Continuous output current

mARMS

IREFLIM

Output current limitation

±10

±25

±50

IREFQ

Quiescent current

IREFOUT = 0 mA

µA

tSSREF

Soft-start duration

0 < IREFOUT < 1 mA

100

µs

tSDREF

Shutdown duration

Pull-down enabled, VREFOUT = 0.6 V to VREFOUT= 0.2 V,

ILDOOUT = no load

1.5

3.4.9

BUCK1, BUCK6

Table 14. Electrical and timing parameter specifications (BUCK1, BUCK6)

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

BUCK1, BUCK6

VBUCKIN

Main input voltage

range

2.8

5.5

VOUT

Output voltage

Programmable value

0.5 to

1.5

Voltage programming step

VOUT-ACC

Output voltage error

amplifier accuracy

BUCK1

HP mode

0.5 V < VOUT < 1.5 V

-1.5

+1.5

BUCK6

HP mode

0.5 V < VOUT6 < 1.5 V

-1.5

+1.5

BUCK1, BUCK6

LP mode

0 < IOUT < 50 mA

-4

BUCK6

LP mode

VOUT6 = 1.1 V

0 < IOUT < 50 mA

-3

VOUT-REG

Output load regulation

(4)

BUCK1, BUCK6

HP mode, CCM mode

1 mA < IOUT < 1.5 A

-1

VOUT-RIPP

Output voltage ripple

(2)

HP mode

3.0 V < VBUCKIN < 5.5 V, 5 mA < IOUT < 1500 mA

0.7 V < VOUTBK1 < 1.0 V

1.0 V < VOUTBK6 < 1.35 V

mVPP

STPMIC25

Electrical and timing characteristics

DS14278 - Rev 3

page 17/145

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