STPMIC25BPQR datasheet(12/145 Pages) STMICROELECTRONICS

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3.4.3

LDO1 (VDDA18AON)

Table 9. Electrical and timing parameter specifications (LDO1)

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

LDO1

VLDOIN

Main input voltage range

2.8

5.5

VLDOOUT

Output voltage

1.8

VLDOOUT-ACC Output voltage accuracy

2.8 V < VLDOIN < 5.5 V, 10 µA < ILDOOUT < 20 mA

-4

ILDOLIM

Output current limitation

2.8 V < VLDOIN < 5.5 V

ILDO12Q

Total quiescent current

ILDOOUT = 0 mA

Measured from the related common input pin, LDO12IN

µA

ILDO12IN_LKG Input leakage current

LDO1 output disabled, Tj = 25 °C

Measured from common input pin, LDO12IN

VLDOOUT-LO Load transient regulation

ILDOOUT = 10 µA to 10 mA, tR = tF = 1 µs

VLDOOUT-LI

Line transient regulation

VLDOIN = 3.0 V to 3.6 V,

ILDOOUT = 0, tR = tF = 10 μs

PSRRLDO

Power supply rejection ratio

ΔVLDOIN = 300 mVPP, f = [0.1:20] kHz, Tj = 25 °C,

ILDOOUT = 10 mA

ΔVLDOIN = 300 mVPP, f = [20:100] kHz, Tj = 25 °C,

ILDOOUT = 10 mA

Output noise

ILDOOUT = 10 µA to 10 mA, f = 10 Hz to 5 MHz,

Tj = 25 °C, all bucks enabled

250

µVRMS

tSSLDO

Soft-start duration

2.8 V < VLDOIN < 5.5 V, 0 < ILDOOUT < 1 mA,

COUT = 4.7 µF

230

µs

VLDOOUT-SO Startup overshoot

2.8 V < VLDOIN < 5.5 V, ILDOOUT < 10 µA

tSDLDO

Shutdown duration

Pull-down enabled, VLDOOUT= 1.8 V to VLDOOUT = 0.2 V,

ILDOOUT = no load

1.5

STPMIC25

Electrical and timing characteristics

DS14278 - Rev 3

page 12/145

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