STPMIC25BPQR datasheet(18/145 Pages) STMICROELECTRONICS

18 / 145 page

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

VOUT-RIPP

Output voltage ripple

(2)

HP mode, IOUT = 750 mA

mVPP

LP mode, 0.5 mA < IOUTBK6 < 50 mA

3.0 V < VBUCKIN < 4.2 V

VOUT6 = 1.110 V

10 (2)

IOUT_LP_PEAK

Peak output current in

LP mode

2.8 V < VBUCKIN < 5.5 V, tPEAK < 1 ms

200

IBCKLIM

Inductor peak current

limit (with typical BoM

list)

Programmable value in NVM_BUCKS_IOUT_SHR

Ref. Table 1. Default configuration table NVM setting A and B version

Max output current steps (0.5 A, 1 A, 1.5 A, 2 A) can be defined based

on the selected inductor peak current limit level

1.2

1.8

2.5

3.0

1.5

2.1

2.8

3.3

1.8

2.4

3.1

3.6

fREFCLK

Reference switching

frequency

CCM mode

MHz

IQ_BCK

Total quiescent current

IOUT = 0 mA, HP mode

115

300

µA

IOUT = 0 mA, LP mode

IBUCKIN_LKG Input leakage current

BUCK OFF, Tj = 25 °C

1.5

EFFBCK

Efficiency

VBUCKIN = 5 V, VOUT = 0.9 V, HP mode

IOUT = 10 mA

IOUT = 100 mA

IOUT = 300 mA (best efficiency load)

IOUT = 1000 mA

IOUT = 1500 mA

VOUT-LO

Load transient

regulation (4)

HP mode

3.0 V < VBUCKIN < 5.5 V

5 mA < IOUT< 1.5 A

ΔIOUT = 560 mA, tR = tF ~500 ns

LP mode, 0 < IOUT < 50 mA ΔIOUT = 50 mA, tR = tF ~500 ns

LP mode, 3.0 V < VBUCKIN < 5.5 V,

VOUTBK6 = 1.110 V

ΔIOUT = 10 mA, tR = tF ~500 ns

VOUT-LI

Line transient

regulation

ΔVBKIN = 600 mV, ΔIOUT = 500 mA tR = tF~10 μs, HP mode

VOUT-OVR

Power-up overshoot

2.8 V < VBKIN < 5.5 V, IOUT~1 mA TA = +25 °C, 0.5 V < VOUT < 1.5 V

tLP-HP-BCK

Recovery time from LP

to HP mode

VOUT_LP = VOUT_HP

60(4)

µs

tSU_BCK

Startup delay (delay

before voltage starts to

rise)

Delay time from PWRCTRL signal (PWRCTRL_DLY = 0)

25 (3)

40. (4)

µs

tSS_BCK

Soft-start duration

235

400

µs

SRBCK

Output voltage slew

rate

Slew rate during startup

3.7

6.3

mV/µs

DVS slew rate of a voltage programmed change low to high or high to

low, from VOUT = 0.5 V to 1.5 V

3.1

mV/µs

tSD_BCK

Shutdown duration

From VOUT =1.5 V to VOUT < 0.2 V, 2.8 V < VBUCKIN < 5.5 V, IOUT <

1 mA slow PD

1.5

STPMIC25

Electrical and timing characteristics

DS14278 - Rev 3

page 18/145

STPMIC25BPQR Datasheet(PDF) 18 Page - STMicroelectronics

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