Datasheet > AAT2556

AAT2556

更新时间： 2022-04-23 23:00:11

品牌	Logo	应用领域
ANALOGICTECH		转换器电池便携式
页数	文件大小	规格书
29页	745K
描述
Battery Charger and Step-Down Converter for Portable Applications

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AAT2556 数据手册

AAT2556

Battery Charger and Step-Down

Converter for Portable Applications

Typical Characteristics – Step-Down Converter

Efficiency vs. Load

(V_OUT= 1.8V; L = 3.3µH)

DC Load Regulation

(V_OUT= 1.8V; L = 3.3µH)

100

1.0

0.5

V_IN= 5.0V

V_IN= 2.7V

V_IN= 3.6V

V_IN= 5.5V

0.0

V_IN= 2.7V

V_IN= 4.2V

V_IN= 5.0V

V_IN= 4.2V

-0.5

-1.0

0.1

100

1000

0.1

100

1000

Output Current (mA)

Efficiency vs. Load

(V_OUT= 1.2V; L = 1.5µH)

DC Load Regulation

(V_OUT= 1.2V; L = 1.5µH)

100

1.0

0.5

V_IN= 2.7V

V_IN= 5.0V

V_IN= 3.6V

V_IN= 5.5V

0.0

V_IN= 5.5V

V_IN= 5.0V

V_IN= 4.2V

V_IN= 3.6V

V_IN= 4.2V

-0.5

-1.0

V_IN= 2.7V

0.1

100

1000

0.1

100

1000

Output Current (mA)

Soft Start

(V_IN= 3.6V; V_OUT= 1.8V;

_OUT= 250mA; C_FF= 100pF)

Line Regulation

(V_OUT= 1.8V)

0.6

5.0

4.0

3.0

2.0

1.0

0.0

1.6

1.4

1.2

1.0

0.8

0.6

0.4

0.2

0.0

-0.2

-0.4

0.5

0.4

V_EN

I_OUT= 0mA

I_OUT= 50mA

0.3

0.2

I_OUT= 150mA

0.1

-1.0

-2.0

-3.0

-4.0

-5.0

V_O

0.0

-0.1

-0.2

-0.3

I_OUT= 10mA

I_OUT= 250mA

I_L

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

Time (100µs/div)

Input Voltage (V)

2556.2006.05.1.0

1...3 4 567 8 9...29

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