RT9228GS datasheet(3/8 Pages) RICHTEK

3 / 8 page

RT9228

DS9228-06

March 2007

www.richtek.com

Absolute Maximum Ratings

Supply Voltage ----------------------------------------------------------------------------------------------------- +15V

PGOOD, FAULT and GATE Voltage --------------------------------------------------------------------------- GND-0.3V to VCC+0.3V

Input, Output or I/O Voltage ------------------------------------------------------------------------------------- GND-0.3V to 7V

Ambient Temperature Range ------------------------------------------------------------------------------------ 0

°C to +70°C

Junction Temperature Range ------------------------------------------------------------------------------------ 0

°C to +125°C

Storage Temperature Range ------------------------------------------------------------------------------------

−65°C to +150°C

Lead Temperature (Soldering, 10 sec.) ----------------------------------------------------------------------- 260

°C

Package Thermal Resistance

SOP-24,

θJA -------------------------------------------------------------------------------------------------------- 75°C/W

Electrical Characteristics

Recommended Operating Conditions

Supply Voltage ----------------------------------------------------------------------------------------------------- +12V

± 10%

Ambient Temperature Range ------------------------------------------------------------------------------------ 0

°C to 70°C

Junction Temperature Range ------------------------------------------------------------------------------------ 0

°C to 125°C

CAUTION:

Stresses beyond the ratings specified in "Absolute Maximum Ratings" may cause permanent damage to the device.

This is a stress only rating and operation of the device at these or any other conditions above those indicated in the

operational sections of this specification is not implied.

(VCC = 12V, PGND = 0V, TA = 25°C, unless otherwise specified)

Parameter

Symbol

Test Conditions

Min

Typ

Max

Units

VCC Supply Current

Nominal Supply Current

ICC

UGATE1, GATE3, LGATE1,

and VOUT2 Open

Power-On Reset

VCC Rising Threshold

VOCSET1 = 4.5V

7.5

9.5

VCC Falling Threshold

VOCSET1 = 4.5V

Rising VIN2 Under-voltage Threshold

2.8

VIN2 Under-voltage Hysteresis

0.5

Rising VOCSET1 Threshold

1.25

Oscillator

Free Running Frequency

180

200

225

kHz

Ramp Amplitude

ΔVOSC

1.9

VP-P

To be continued

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