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RT8223L

High Efficiency, Main Power Supply Controller for Notebook Computer

Richtek Technology 

Typical Operating Characteristics

VOUT1 Efficiency vs. Load Current

100

90 DEM Mode

80

70

Ultrasonic Mode

60

50

PWM Mode

40

30

20

10

0

0.001

VIN = 8V, TONSEL = GND, EN = FLOATING,

VENTRIP1 = 1.5V, VENTRIP2 = 5V

0.01

0.1

1

10

Load Current (A)

VOUT1 Efficiency vs. Load Current

100

90

DEM Mode

80

70

60

Ultrasonic Mode

50

PWM Mode

40

30

20

10

0

0.001

VIN = 20V

TONSEL = GND, EN = FLOATING,

VENTRIP1 = 1.5V, VENTRIP2 = 5V

0.01

0.1

1

10

Load Current (A)

VOUT2 Efficiency vs. Load Current

100

90

80 DEM Mode

70

60

Ultrasonic Mode

50

PWM Mode

40

30

20

10

0

0.001

VIN = 12V

TONSEL = GND, EN = FLOATING,

VENTRIP1 = 5V, VENTRIP2 = 1.5V

0.01

0.1

1

10

Load Current (A)

DS8223L/M-04 April 2011

RT8223L/M

VOUT1 Efficiency vs. Load Current

100

90 DEM Mode

80

70

60

Ultrasonic Mode

50

40

PWM Mode

30

20

10

0

0.001

VIN = 12V

TONSEL = GND, EN = FLOATING,

VENTRIP1 = 1.5V, VENTRIP2 = 5V

0.01

0.1

1

10

Load Current (A)

VOUT2 Efficiency vs. Load Current

100

90

80 DEM Mode

70

60

Ultrasonic Mode

50

PWM Mode

40

30

20

10

0

0.001

VIN = 8V

TONSEL = GND, EN = FLOATING,

VENTRIP1 = 5V, VENTRIP2 = 1.5V

0.01

0.1

1

10

Load Current (A)

VOUT2 Efficiency vs. Load Current

100

90

80

DEM Mode

70

60

Ultrasonic Mode

50

40

30

20

10

0

0.001

PWM Mode

VIN = 20V

TONSEL = GND,EN = FLOATING,

VENTRIP1 = 5V, VENTRIP2 = 1.5V

0.01

0.1

1

10

Load Current (A)

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