RT8855 データシートの表示（PDF） - Richtek Technology

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RT8855

4/3/2/1-Phase PWM Controller for AMD AM2/AM2+ CPUs

Richtek Technology 

RT8855

Parameter

Over-Current Threshold

Gate Driver

UGATE Drive Source

UGATE Drive Sink

LGATE Drive Source

LGATE Drive Sink

Symbol

IOCP

VIM A X

IOCP_ NB

VIM A X_NB

Test Conditions

RIMAX = 40kΩ

RIMAX = 40kΩ

RIMAX_NB = 40kΩ

RIMAX_NB = 40kΩ

RUGATEsr

RUGATEsk

RLGATEsr

RLGATEsk

BOOT − PHASE = 8V

250mA Source Current

BOOT − PHASE = 8V

250mA Sink Current

VLGATE = 8V

250mA Sink Current

Min

Typ

Max Unit

68

80

92

uA

1.44

1.6

1.76

V

68

80

92

uA

1.44

1.6

1.76

V

--

1

--

Ω

--

1

--

Ω

--

1

--

Ω

--

0.9

--

Ω

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

JEDEC thermal measurement standard.

Note 3. Devices are ESD sensitive. Handling precaution is recommended.

Note 4. The device is not guaranteed to function outside its operating conditions.

DS8855-01 April 2011

www.richtek.com

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