RT9277APF datasheet(6/12 Pages) RICHTEK

6 / 12 page

RT9277A/B

Preliminary

DS9277A/B-02 March 2007

www.richtek.com

Note 1.Stresses listed as the above "Absolute Maximum Ratings" may cause permanent damage to the device. These are for

stress ratings. Functional operation of the device at these or any other conditions beyond those indicated in the

operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended

periods may remain possibility to affect device reliability.

Note 2. Devices are ESD sensitive. Handling precaution recommended.

Note 3. The device is not guaranteed to function outside its operating conditions.

Note 4.

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

JEDEC 51-3 thermal measurement standard.

Parameter

Symbol

Test Condition

Min

Typ

Max

Units

Feedback Voltage Line

Regulation

VCOMP = 1.24V,

2.5V < VIN < 5.5V

0.05

0.15

%/V

MOSFET

On Resistance of MOSFET

RDS(ON)

200

500

Current Limitation

1.2

1.6

Enable Control Input

Input Low Voltage

VIL

2.5V ＜ VIN ＜ 5.5V

0.3 x VIN

Input High Voltage

VIH

2.5V ＜ VIN ＜ 5.5V

0.7 x VIN

Hysteresis

0.1

Protection Function

Over Temperature Protection

170

°C

Hysteresis

°C

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