RT8223L 데이터 시트보기 (PDF) - Richtek Technology

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RT8223L

High Efficiency, Main Power Supply Controller for Notebook Computer

Richtek Technology 

RT8223L/M

Electrical Characteristics

(VIN = 12V, VEN = VENC = 5V, VENTRIP1 = VENTRIP2 = 2V, No Load, TA = 25°C, unless otherwise specified)

Parameter

Symbol

Test Conditions

Min Typ Max Unit

Input Supply

VIN Standby Current IVIN_SBY VIN = 6V to 25V, ENTRIPx = GND

-- 200 --

μA

VIN Shutdown Supply

Current

IVIN_SHDN

VIN = 6V to 25V,

ENTRIPx = EN = GND

--

20 40

μA

Quiescent Power

Consumption

P VI N

+PPVCC

Both SMPS On, VFBx = 2.1V,

SKIPSEL = GND, VOUT1 = 5V, VOUT2 = 3.3V --

(Note 5)

5

7 mW

SMPS Output and FB Voltage

DEM Mode

1.975 2 2.025

FBx Voltage

VFBx

PWM Mode (Note 6)

--

2

--

V

Ultrasonic Mode

-- 2.032 --

Output Voltage Adjust

Range

V OU Tx

VOUTx Discharge

Current

On-Time

SMPS1, SMPS2

VOUTx = 0.5V, VENTRIPx = 0V

2

-- 5.5 V

10 45 -- mA

On-Time Pulse Width tON

Minimum Off-Time tOFF

Ultrasonic Mode

Frequency

Soft-Start

TONSEL =

GND

VOUT1 = 5.05V (200kHz)

VOUT2 = 3.33V (250kHz)

TONSEL = REF VOUT1 = 5.05V (300kHz)

VOUT2 = 3.33V (375kHz)

TONSEL =

VREG5

VOUT1 = 5.05V (400kHz)

VOUT2 = 3.33V (500kHz)

VFBx = 1.9V

SKIPSEL = VREG5 or VREG3

1895 2105 2315

999 1110 1221

1227 1403 1579

ns

647 740 833

895 1052 1209

475 555 635

200 300 400 ns

22 33 -- kHz

Soft-Start Time

tSSx

Internal Soft-Start

--

2

--

ms

Current Sense

ENTRIPx Source

Current

ENTRIPx Current

Temperature

Coefficient

ENTRIPx Adjustment

Range

Current Limit

Threshold

Zero-Current

Threshold

IENTRIPx

VENTRIPx = 0.9V

TCIENTRIPx In Comparison with 25°C (Note 6)

VENTRIPx = IENTRIPx x RENTRIPx

GND − PHASEx, VENTRIPx = 2V

GND − PHASEx in DEM

9.4 10 10.6 μA

-- 4700 -- ppm/°C

--

--

3

V

180 200 220 mV

--

3

-- mV

DS8223L/M-04 April 2011

To be continued

www.richtek.com

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