RT8857 데이터 시트보기 (PDF) - Richtek Technology

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RT8857

4/3/2/1-Phase PWM Controller with Embedded Drivers for CPU Core Power Supply

Richtek Technology 

RT8857/A

Parameter

Symbol

Test Conditions

Min Typ Max Unit

Input Threshold

VID7 to VID0,

VID7 to 0,

VIDSEL Rising Threshold VIDSEL

VID7 to VID0 Rising,

VIDSEL Rising

VID7 to VID0 Hysteresis VID7 to 0_Hy VID7 to VID0 Falling

PSI Rising Threshold

VPSI

PSI Rising

-- 1/2VTT + --

V

12.5mV

--

25

-- mV

-- 1/2VTT + --

V

12.5mV

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.

Note 5. Test condition : RT8857/A normal operating, an extra static DC current load 10mA applying at VCC5 pin.

Note 6. The maximum output voltage of power monitor will be restricted by EN/VTT pin input voltage.

DS8857/A-01 April 2011

www.richtek.com

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