RT9921PQV 查看數據表（PDF） - Richtek Technology

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RT9921PQV

Integrated Multi-Channel DC-DC Converter for TFT LCD Panels

Richtek Technology 

Preliminary

RT9921

Absolute Maximum Ratings (Note 1)

z Supply Input Voltage, VIN ---------------------------------------------------------------------------------------- −0.3 to 6.5V

z LX --------------------------------------------------------------------------------------------------------------------- −0.3 to 16V

z VGH, VGHM, RE -------------------------------------------------------------------------------------------------- −0.3 to 30V

z AVDD ----------------------------------------------------------------------------------------------------------------- −0.3 to 16V

z VGH − AVDD, VGHM − AVDD ---------------------------------------------------------------------------------- −0.3 to 20V

z OPAI, OPAO, DRVP ---------------------------------------------------------------------------------------------- −0.3 to (VAVDD + 0.3V)

z VDPM, VFLK, CD, RESET, VDIV, SS, COMP, FB, FBP ------------------------------------------------ −0.3 to (VIN + 0.3V)

z LDOI ------------------------------------------------------------------------------------------------------------------ −0.3 to 6.5V

z ADJ, LDOO --------------------------------------------------------------------------------------------------------- −0.3 to (LDOI+0.3V)

z Power Dissipation, PD @ TA = 25°C

VQFN-24L 4x4 ----------------------------------------------------------------------------------------------------- 1.786W

z Package Thermal Resistance (Note 4)

VQFN-24L 4x4, θJA ------------------------------------------------------------------------------------------------ 56°C/W

z Lead Temperature (Soldering, 10 sec.) ----------------------------------------------------------------------- 260°C

z Junction Temperature --------------------------------------------------------------------------------------------- 150°C

z Storage Temperature Range ------------------------------------------------------------------------------------ −65°C to 150°C

z ESD Susceptibility (Note 2)

HBM (Human Body Mode) -------------------------------------------------------------------------------------- 2kV

MM (Machine Mode) ---------------------------------------------------------------------------------------------- 200V

Recommended Operating Conditions (Note 3)

z Maximum Output Voltage Setting, AVDD and VOUT ------------------------------------------------------ 15V

z Maximum (VGH − AVDD) --------------------------------------------------------------------------------------- 18V

http://www.DataSheet4U.net/

z Junction Temperature Range ------------------------------------------------------------------------------------ −40°C to 125°C

z Ambient Temperature Range ------------------------------------------------------------------------------------ −40°C to 85°C

Electrical Characteristics

(VIN = 3.3V, VOUT = 8.5V, TA = 25°C, unless otherwise specification)

Par amete r

Sy mbol

Test Condition

System Supply

Input Supply Voltage

VIN

VIN Under Voltage Lockout

Threshold

VUVLO

VIN Rising

Hy ste resi s

VIN Quiescent Current

Shutdown Current

Main Boost Regulator

IQ

ISHDN

VFB = 1.3V, LX no Switching

VFB = 1.1V, LX Switching

VIN = 3.3V

Operation Frequency

Maximum Duty Cycle

fOSC

FREQ = 0

FREQ = VIN

Min Typ Max Units

2.5

--

5.5

V

1.8

2

2.2

V

--

0 .1

--

--

0 .5

1

mA

--

2

4

mA

--

1

5

μA

-- 640 -- kHz

1

1.2 1.5 MHz

86 90

--

%

To be continued

DS9921-00 November 2007

www.richtek.com

5

datasheet pdf - http://www.DataSheet4U.net/

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