Datasheet > RT9921

RT9921

更新时间： 2024-04-09 18:58:47

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
15页	241K
描述
Integrated Multi-Channel DC/DC Converter for TFT LCD Panels

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RT9921 数据手册

RT9921

Typical Operating Characteristics

Boost Efficiency vs. Output Current

Boost Output Voltage vs. Output Current

100

8.6

8.59

8.58

8.57

8.56

8.55

8.54

8.53

8.52

8.51

8.5

V_IN= 5V

V_IN= 4V

V_IN= 3V

V_IN= 4V

V_IN= 5V

V_OUT= 8.5V, F_SW= 1.2MHz

F_SW= 1.2MHz

100

150

200

250

300

100

150

200

250 300

Output Current (mA)

Boost Output Voltage vs. Input Voltage

V_FBvs. Temperature

8.6

8.59

8.58

8.57

1.247

1.2451

1.2432

1.2413

1.2394

1.2375

1.2356

1.2337

1.2318

1.2299

8.56 I_OUT= 100mA

I_OUT= 200mA

8.55

I_OUT= 300mA

8.54

8.53

8.52

8.51

8.5

F_SW= 1.2MHz

No Load

2.5

3.5

4.5

5.5

-40 -30 -20 -10

10 20 30 40 50 60 70 80 85

Input Voltage (V)

Temperature (°C)

LDO Output Voltage vs. Output Current

LDO Dropout Voltage vs. Output Current

2.5

2.48

2.46

2.44

2.42

2.4

700

600

500

400

300

200

100

85°C

25°C

V_IN= 3V

V_IN= 4V

V_IN= 5V

-40°C

V_OUT= 2.5V

100

150

200

250

300

100

150

200

250

300

350

Output Current (mA)

is a registered trademark of Richtek Technology Corporation.

www.richtek.com

DS9921-04 May 2014

1...5 6 789 10 11...15

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