ST1S03 datasheet(6/17 Pages) STMICROELECTRONICS

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Electrical characteristics

ST1S03

6/17

Electrical characteristics

Table 4.

Electrical characteristics (VIN_SW = VIN_A = 5V, CI = 4.7µF, CO = 22µF, L1 = 3.3µH,

TJ = 0 to 125°C, unless otherwise specified. Typical values are referred to 25°C)

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

Feedback voltage

784

800

816

PSRR

Feedback PSRR

1Hz < Frequency VIN

-60

IFB

VFB Pin bias current

600

Bandwidth of error amplifier

Closed Loop

300

KHz

Quiescent current

No Switching

2.5

Output current

VIN =3V to 16V

1.5

IMIN

Minimum output current

%VO/∆VIN Reference line regulation

VIN = 3V to 16V

0.032

0.06

%VO/

∆VIN

%VO/∆IO

Reference load regulation

IO = 10mA to 1.2A

0.0014

0.003

%VO/

PWM fS

PWM Switching frequency (1)

Guaranteed by design, but not tested in production.

VFB = 0.8V, TA =25°C

1.2

1.5

1.8

MHz

DMAX

Maximum duty cycle

ISWL

Switching current limitation

1.65

VDS

Switch VDS

ISW = 750 mA

200

350

Efficiency

IO =10mA to 1.2A

TSHDN

Thermal shut down (1)

130

150

°C

THYS

Thermal shut down hysteresis (1)

°C

∆VO/∆IO Load transient response (1)

IO = 100mA to 700mA

tR = tF ≥ 100ns, TA = 25°C

-5

%VO

∆VO/∆IO@

IO=short

Short circuit removal response(1) IO = 10mA to short, TA = 25°C

%VO

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