ST2S06 datasheet(6/18 Pages) STMICROELECTRONICS

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Electrical characteristics

ST2S06

6/18

DocID13866 Rev 6

Electrical characteristics

VIN_SW = VIN_A = 5 V, V01 = 3.3 V, VO2 = 1.2 V, C1 = 4.7 µF, C2 = C3 = 22 µF, L1 = L2 = 3.3

µH, TJ = - 30 to 125 °C unless otherwise specified. Typical values are referred to 25 °C.

Table 6. Electrical characteristics for the ST2S06A33

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

OUT1

Output feedback pin

3.23

3.3

3.37

FB2

Feedback voltage

784

800

816

IO1

IO1 pin bias current

VO = 3.5 V

µA

IFB2

VFB pin bias current

VFB = 1 V

600

Quiescent current

VFB = 1 V

1.2

IO1,2

Output current

VIN = 4 to 5.5 V

(1)

0.8

IMIN

Minimum output current

%VO1,2/VI

Reference line regulation

4V < VIN < 5.5 V

0.032

%VO/

VIN

V

O1,2

Reference load regulation

10mA < IO < 0.5 A

5.5

PWM fS

PWM switching

frequency(1)

VFB = 0.7 V, TA = 25°C

1.2

1.5

1.8

MHz

DMAX

Maximum duty cycle

VFB = 0.7 V, TA = 25°C

ISWL

Switching current limitation

1.2

ILKN

NMOS leakage current

VFB = 0.9 V, TA = 25°C

0.1

µA

ILKP

PMOS leakage current

VFB = 0.9 V, TA = 25°C

0.1

µA

RDSon-N

NMOS switch on resistance ISW = 250 mA

0.15

0.3

RDSon-P

PMOS switch on resistance ISW = 250 mA

0.2

0.4



Efficiency

IO = 20 mA to 100 mA

IO = 100 mA to 0.5 A

TSHDN

Thermal shut down (2)

130

150

°C

THYS

Thermal shut down

hysteresis (2)

°C

V

O1,2/IO

Load transient response (2)

100 mA < IO < 500 mA

tR = tF => 100 ns, TA = 25°C

-5

%VO

Reset section

tDEL

Delay time

TA = 25°C

VRES

Reset in threshold

measured on input pin

VIN_A Rising

4.5

4.6

4.75

VIN_A Falling

4.12

4.2

4.28

VO = 90% of nominal value.

Guaranteed by design, but not tested in production.

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