RT8282B 데이터 시트보기 (PDF) - Richtek Technology

부품명

상세내역

제조사

RT8282B

2A, 23V, 1.2MHz Synchronous Step-Down Converter

Richtek Technology 

RT8282B

Current Limit vs. Duty Cycle

6.0

5.5

5.0

4.5

4.0

3.5

3.0

0

VIN = 4.5V to 23V, VOUT = 3.3V

10 20 30 40 50 60 70 80

Duty Cycle (%)

Current Limit VS. Temperature

6.0

5.5

5.0

4.5

4.0

3.5

3.0

-50 -25

VIN = 12V, VOUT = 3.3V

0

25 50 75

Temprature (°C)

100 125

Output Current Limit vs. Input Voltage

6.0

5.5

5.0

4.5

4.0

3.5

3.0

VOUT = 1.2V

2.5

VOUT = 3.3V (Add Bootstrap Diode)

2.0

VOUT = 3.3V

1.5

1.0

0.5

0.0

4 6 8 10 12 14 16 18 20 22 24

Input Voltage (V)

VOUT

(50mV/Div)

IOUT

(2A/Div)

Load Transient Response

Load Transient Response

VIN = 12V, VOUT = 3.3V, IOUT = 0A to 2A

Time (100μs/Div)

Switching

VOUT

(50mV/Div)

IOUT

(2A/Div)

VOUT

(10mV/Div)

VSW

(10V/Div)

VIN = 12V, VOUT = 3.3V, IOUT = 1A to 2A

Time (100μs/Div)

IL

(1A/Div)

VIN = 12V, VOUT = 3.3V, IOUT = 2A

Time (500ns/Div)

DS8282B-01 March 2011

www.richtek.com

7

Share Link: