STPMIC25 datasheet(16/145 Pages) STMICROELECTRONICS

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Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

tSDLDO-SS

Shutdown duration

Pull-down enabled,

VLDOOUT = VREFDDR to VLDOOUT = 0.2 V, ILDOOUT = no

load

1.5

LDO3 bypass mode (lpDDR VDD1 supply)

VLDOIN = 1.8 V, VLDOOUT = ~1.8 V, Tj = -40 °C to +125 °C, recommended BOM, unless otherwise specified

VLDOIN-BP

Input voltage range

1.7

ILDOOUT-BP

Continuous output current

1.7 V < VLDOIN < 2 V

(no overcurrent protection in bypass mode TBV)

RDSONLDO-BP

Bypass on resistance

1.7 V < VLDOIN < 2 V, ILDOOUT = 40 mA

360

mΩ

tSSLDO-BP

Soft-start duration

1.7 V < VLDOIN < 2 V, 0 < ILDOOUT < 1 mA

COUT = 4.7 µF,

100

µs

tSDLDO-BP

Shutdown duration

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

ILDOOUT = no load

1.5

3.4.7

LDO4

Table 13. Electrical and timing parameter specifications (LDO4)

Symbol

Parameter

Test conditions

Min. Typ. Max. Unit

LDO4

VLDOIN

Main input voltage range

VLDOIN from VIN or VBUS pins

2.8

5.5

VLDOOUT-ACC Output voltage accuracy

VLDOIN = 3.6 V to 5.0 V

100 µA < ILDOOUT < 30 mA

3.23 3.3

3.40

ILDOLIM

Output current limitation

VLDOIN = 3.6 V to 5.5 V

ILDOQ

Quiescent current

ILDOOUT = 0 mA

µA

VLDODROP

Dropout voltage from VIN

ILDOOUT = 30 mA

VLDOOUT-LO Load transient regulation ILDOOUT = 1 to 30 mA, tR = tF = 1 µs

VLDOOUT-LI

Line transient regulation

VIN = 3.6 V, VBUS = from 0 V to 5 V (internal mux), ILDOOUT = 10 mA

PSRRLDO

Power supply rejection

ratio

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

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

tSSLDO

Soft-start duration

3.6 V < VLDOIN < 5.5 V, 0 < ILDOOUT < 1 mA, COUT = 4.7 µF

100

µs

VLDOOUT-SO Startup overshoot

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

tSDLDO

Shutdown duration

Pull-down enabled, VLDOOUT = 3.3 V to VLDOOUT = 0.2 V, ILDOOUT = no

load

1.5

STPMIC25

Electrical and timing characteristics

DS14278 - Rev 3

page 16/145

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