STPMIC25BPQR datasheet(20/145 Pages) STMICROELECTRONICS

20 / 145 page

3.4.10

BUCK2, BUCK3

Table 15. Electrical and timing parameter specifications (BUCK2, BUCK3)

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

BUCK2, BUCK3

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 open

loop accuracy

HP mode

0.5 V < VOUT < 1.5 V

-1.5

+1.5

LP mode

-4

VOUT-REG

Output load regulation

(4)

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

0.7 V < VOUT < 1.0 V

5 mA < IOUT < 2000 mA

mVPP

HP mode, IOUT = 1000 mA

LP mode, 3.0 V < VBUCKIN < 5.5 V

0.6 V < VOUT < 0.9 V

1 mA < IOUT < 50 mA

IOUT_LP_PEAK

Peak output current in

LP mode

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

200

IBCKLIM

Inductor peak current

limit

(with typical BoM list)

Programmable value in NVM_BUCKS_IOUT_SHR

Ref. Table 1 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 output disabled, Tj = 25 °C

0.01

EFFBCK

Efficiency

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

IOUT = 10 mA

IOUT = 100 mA

IOUT = 400 mA

IOUT = 1000 mA

IOUT = 2000 mA

VOUT-LO

Load transient

regulation(4)

HP mode, 3.0 V < VBUCKIN < 5.5 V, 5 mA < IOUT < 2 A

ΔIOUT = 1300 mA, tF = 500 ns

HP mode

3.0 V < VBUCKIN < 5.5 V, 5 mA < IOUT < 2 A, ΔIOUT = 1300 mA, tR =

500 ns.

-34

STPMIC25

Electrical and timing characteristics

DS14278 - Rev 3

page 20/145

STPMIC25BPQR Datasheet(PDF) 20 Page - STMicroelectronics

STPMIC25BPQR Datasheet(HTML) 20 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL