ST1S03 datasheet(3/11 Pages) STMICROELECTRONICS

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ST1S03

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Table 5: 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)

NOTE 1: Guaranteed by design, not tested in production.

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

IOUT

Output Current

VIN =3V to 16V

1.5

IMIN

Minimum Output Current

%VOUT/

∆VIN

Reference Line Regulation

VIN = 3V to 16V

0.032

0.06

%VOUT

∆VIN

%VOUT/

∆IOUT

Reference Load Regulation

IOUT = 10mA to 1.2A

0.0014

0.003

%VOUT

/mA

PWM fS

PWM Switching Frequency

(1)

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

IOUT =10mA to 1.2A

TSHDN

Thermal Shut Down (1)

130

150

°C

THYS

Thermal Shut Down

Hysteresis (1)

°C

∆VOUT/

∆IOUT

Load Transient Response

(1)

IOUT = 100mA to 700mA

tR = tF ≥ 100ns, TA = 25°C

-5

%VO

∆VOUT/

∆IOUT

@IO = short

Short Circuit Removal

Response (1)

IOUT = 10mA to short, TA = 25°C

%VO

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