RT8025 데이터 시트보기 (PDF) - Richtek Technology

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RT8025

1.25MHz, 400mA, High Efficiency PWM Step-Down DC/DC Converter

Richtek Technology 

RT8025

0.510

0.508

Reference vs. Temperature

VIN = 3.3V, VOUT = 1.8V

0.505

0.503

0.500

0.498

0.495

0.493

0.490

-50 -25

0

25 50 75 100

Temperature (°C)

VOUT

(20mV/Div)

IOUT

(200mA/Div)

125

Load Transient Response

VIN = 3.3V, VOUT = 1.8V, IOUT = 100mA to 400mA

Time (50μs/Div)

VOUT

(20mV/Div)

Load Transient Response

Output Ripple

VIN = 3.3V, VOUT = 1.8V, IOUT = 400mA

VLX

(5V/Div)

VOUT

(5mV/Div)

IOUT

(200mA/Div)

VIN = 3.3V, VOUT = 1.8V, IOUT = 200mA to 400mA

Time (50μs/Div)

ILX

(500mA/Div)

Time (500ns/Div)

VEN

(5V/Div)

Power On

VIN = 3.3V, VOUT = 1.8V, IOUT = 400mA

VOUT

(1V/Div)

IIN

(200mA/Div)

VEN

(5V/Div)

Power Off

VIN = 3.3V, VOUT = 1.8V, IOUT = 400mA

VOUT

(2V/Div)

IIN

(200mA/Div)

Time (100μs/Div)

Time (100μs/Div)

DS8025-02 March 2011

www.richtek.com

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