STPMIC1CPQR datasheet(17/140 Pages) STMICROELECTRONICS

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Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

SRBK3

Output voltage

slew rate

Slew rate during start-up

5.5

mV/µs

DVS slew rate of a voltage programmed change

low to high or high to low

3.1

mV/µs

tSD_BK3

Shutdown

duration

From VOUT3 = 1.2 V to VOUT3<0.2 V, VIN=3.6 V,

COUT=22 µF

Slow PD, IBK3OUT<1 mA

1.5

Fast PD, IBK3OUT<1 mA

0.15

Buck converter 4

VBUCK4IN = 5.0 V, VOUT4 = 3.3 V, recommended BOM, Tj = -40 °C to +125 °C, unless otherwise specified

VBUCK4IN

Main input

voltage range

2.8 (2)

5.5

VOUT4

Output voltage

Programmable value, refer to Table 10. BUCK

output settings

0.6 to 3.9

Voltage programming step

0.6 V ≤ VBK4OUT<1.3 V

1.3 V≤ VBK4OUT<1.5 V

1.5 V ≤ VBK4OUT<3.9 V

100

VOUT4-ACC

Output voltage

accuracy

VBUCK4IN = 2.8 V to 5.5 V

HP mode IBK4OUT = 0 to 2.0 A, VOUT4 = 0.8 V to

1.4 V

-2.5

2.5

HP mode IBK4OUT = 0 to 2.0 A, VOUT4 = 0.6 V to

3.9 V

-3.5

3.5

LP mode IBK4OUT = 0 to 50 mA, VOUT4 = 0.6 V to

3.9 V

-4

VOUT4-RIPP

Output voltage

ripple

IBK4OUT = 0 mA, HP mode, TA = +25 °C

IBK4OUT = 2000 mA, HP mode, TA = +25 °C

IOUT4

Continuous

output current

2.8<VBUCK4IN<5.5 V, HP mode

2000

2.8< VBUCK4IN<5.5V, LP Mode

IOUT4_LP_PEAK

Peak output

current in LP

mode

2.8< VBUCK4IN<5.5 V, LP mode, tPEAK < 10 µs

200

IBK4LIM

Inductor peak

current limit

fREFCLK

Reference

switching

frequency

MHz

IQ_BK4

Total quiescent

current

IBUCK4OUT = 0 mA, HP mode

220

300

µA

IBUCK4OUT = 0mA, LP mode

IBUCK4IN_LKG

Input leakage

current

BUCK OFF

µA

EFFBK4

Efficiency

IBK4OUT=250 mA, TA = +25 °C

IBK4OUT=1300 mA,TA = +25 °C

IBK4OUT=2000 mA,TA = +25 °C

STPMIC1

Electrical and timing parameters

DS12792 - Rev 7

page 17/140

STPMIC1CPQR Datasheet(PDF) 17 Page - STMicroelectronics

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