RT8004PQV 데이터 시트보기 (PDF) - Richtek Technology

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RT8004PQV

3A, 4MHz, Synchronous Step-Down Regulator

Richtek Technology 

RT8004

Typical Operating Characteristics

10100%0

Efficiency vs. Output Current

909%0

808%0

707%0

VIN = 5V

VIN = 3.3V

606%0

505%0

404%0

303%0

202%0

101%0

0%0

0

VOUT = 2.5V, 1M Continuous Mode Operation

500 1000 1500 2000 2500 3000

Output Current (mA)

Load Regulation

0.300.3%0

VIN = 3.3V, VOUT = 2.5V

0.200.2%0

0.100.1%0

0.00%0

-0.-100.1%0

-0.-200.2%0

50

550 1050 1550 2050 2550 3050

Output Current (mA)

Soft-Star Power On

VIN = 3.3V, VOUT = 2.5V

RLOAD = 0.83Ω

Power Off

VIN = 3.3V, VOUT = 2.5V, IOUT = 0A

VOUT

(1V/Div)

VSS

(1V/Div)

IL

(1A/Div)

Time (2.5ms/Div)

IL

(2A/Div)

VOUT

(2V/Div)

VLX

(5V/Div)

VIN

(2V/Div)

Time (25ms/Div)

Ripple Voltage

VIN = 3.3V, VOUT = 2.5V, IOUT = 3A

VOUT

(10mV/Div)

VLX

(2V/Div)

Load Transien Response

VIN = 3.3V, VOUT = 2.5V

ILOAD = No Load to 3A

VOUT

(50mV/Div)

IL

(2A/Div)

Time (500ns/Div)

IL

(1A/Div)

Time (25μs/Div)

www.richtek.com

8

DS8004-03 September 2007

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