RT9172F-15GT5 datasheet(5/15 Pages) RICHTEK

5 / 15 page

RT9172

DS9172-14

March 2007

www.richtek.com

Electrical Characteristics

(Limits in standard typeface are for TA = 25°C, unless otherwise specified: VIN = VO(NOM) + 1.0V, IL = 10mA,

COUT = 10

μF(Electrolytic), VEN = VIN)

Parameter

Symbol

Test Conditions

Min

Typ

Max

Units

Output Voltage Tolerance

-1.5

+1.5

Input Voltage Range

VIN

2.25

5.5

Line Regulation

ΔVLINE

VOUT + 0.4V < VIN < 5.5V

0.35

Note 1

0.4

Note 2

0.1

0.4

Load Regulation

ΔVLOAD

Note 3

0.1

0.4

Dropout Voltage

VDROP

IL = 3A

400

700

Quiescent Current

1.2

Shutdown Supply Current

IGSD

VEN = 0V

0.5

μA

Peak Output Current

IO(PEAK)

3.5

Short Circuit Protection

Current Limit

ILIMIT

3.5

Over Temperature Protection

Shutdown Threshold

TSD

Guaranteed by design

170

°C

Thermal Shutdown Hysteresis

Guaranteed by design

°C

Shutdown Function

Output = High

1.2

VIN

EN Pin Shutdown Threshold

VEN

Output = Low

0.4

EN Input Current

VEN = VIN

0.1

FLG Pin Leakage Current

ILEAKAGE

FLG Pin Sink Current

VFLG = 0.5V

Note 1. RT9172-CX, RT9172F-XXCX5, 10mA < IL < 3A

Note 2. RT9172S-XXCX5, RT9172N-XXCX5, 10mA < IL < 3A

Note 3. RT9172CS, 10mA < IL < 1.5A

Note 4.

θJA is measured in the natural convection at TA = 25°C on a low effective thermal conductivity test board of

JEDEC 51-3 thermal measurement standard. The case point of

θJC is on the center of the exposed pad. The pad size

is 125mm2 on TO-263 packages.

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