STODD03 datasheet(9/16 Pages) STMICROELECTRONICS

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STODD03

Electrical characteristics

Doc ID 018980 Rev 1

9/16

Step-down section

FB2

Feedback voltage

TJ = 0 to 85 °C

3.23

3.3

3.37

IFB2

FB2 pin bias current

VFB2 = 3.5 V

µA

IOUT2

Output current (2) (3)

VIN = 4 to 6 V

700

IOUT_MIN

Minimum output current

ΔV

OUT2

Reference load regulation (2) 10 mA < IOUT2 < 0.5 A

5.5

PWM fS

PWM switching frequency

1.2

MHz

%VOUT2/ΔVIN Reference line regulation

4 V < VIN < 6 V

0.032

%VOUT

/VIN

DMAX

Maximum duty cycle

VFB2 = 3.0 V

ISWL

Switching current limitation

1.5

ILKP2

PMOS leakage current

VFB2 = 3.5 V, VSW2 = GND,

TJ = 0 to 80 °C

0.1

µA

ILKN2

NMOS leakage current

VFB2 = 3.5 V, VSW2 = 5 V,

TJ = 0 to 80 °C

0.1

µA

RDSon-N

NMOS switch-on resistance

ISW = 250 mA

0.2

RDSon-P

PMOS switch-on resistance

ISW = 250 mA

0.3

ΔV

OUT2/

ΔI

OUT2

Load transient response (2)

100 mA < IOUT2 < 500 mA,

tR = tF => 100 ns, TJ = 25 °C

-5

%VOUT

Efficiency

VOUT = 3.3 V, IOUT = 100 mA

VOUT = 3.3 V, IOUT = 500 mA

VEN2_H

Enable threshold high

VIN = 4 to 6 V

1.2

VEN2_L

Enable threshold low

VIN = 4 to 6 V

0.4

IEN2

Enable pin current

VEN2 = VIN = 5 V

µA

Power switch section

RDSon-P

PMOS switch-on resistance

ISW = 250 mA

0.3

ISW

Switching operating current

ILKSW

Switching leakage current

EN_SW = EN_SW = H,

TJ = 0 to 80 °C

1µA

VIN_PSW

Input voltage range

VEN_SW_H

Enable pins threshold high

VIN = 4 to 6 V

1.2

VEN_SW_L

Enable pins threshold low

VIN = 4 to 6 V

0.4

IEN_SW

Enable pins current

VEN_SW = VIN = 5 V

µA

Table 8.

Electrical characteristics (continued)

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

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