Datasheet > AAT3157

AAT3157

更新时间： 2022-04-23 23:00:11

品牌	Logo	应用领域
ANALOGICTECH		泵
页数	文件大小	规格书
11页	302K
描述
High Efficiency 1X/1.5X/2X Charge Pump For White LED Applications

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AAT3157 数据手册

AAT3157

High Efficiency 1X/1.5X/2X Charge Pump

For White LED Applications

Typical Characteristics

C_IN= C_OUT= C₁= C₂= 1.0µF; T_A= 25°C, V_IN= 3.6V, unless otherwise noted.

Efficiency vs. Supply Voltage

Turn-On to 1X Mode

(V_IN= 4.2V; 20mA/ch Load)

100

EN/SET

(2V/div)

V_OUT

(2V/div)

10mA/ch

V_F= 3.1V

V_SINK

(2V/div)

5mA/ch

V_F= 2.7V

20mA/ch

V_F= 3.4V

I_IN

(100mA/div)

2.7

2.9

3.1

3.3

3.5

3.7

3.9

4.1

4.3

Supply Voltage (V)

Time (100μμs/div)

Turn-On to 1.5X Mode

(V_IN= 3.5V; 20mA/ch Load)

Turn-On to 2X Mode

(V_IN= 2.8V; 20mA/ch Load)

EN/SET

(2V/div)

EN/SET

(2V/div)

V_OUT

(2V/div)

V_SINK

V_OUT

(2V/div)

V_SINK

(2V/div)

I_IN

(100mA/div)

I_IN

(200mA/div)

Time (100µs/div)

Turn-Off to 1.5X Mode

(V_IN= 3.5V; 20mA/ch Load)

Diode Current vs. Temperature

(20mA/ch)

22.0

21.5

21.0

20.5

20.0

19.5

19.0

18.5

EN/SET

(2V/div)

I_D1

I_D2

V_LED

(1V/div)

I_D3

I_IN

(100mA/div)

18.0

-40

-25

-10

Time (100µs/div)

Temperature (°°C)

3157.2006.05.1.2

1 2 3 456 7 8...11

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