Datasheet > AAT2842_07

AAT2842_07

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
22页	621K
描述
High-Current Charge Pump with S2Cwire⑩ Control and Dual LDO for Backlight and Flash

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AAT2842_07 数据手册

AAT2842

High-Current Charge Pump with S Cwire™

Control and Dual LDO for Backlight and Flash

Typical Characteristics

V_IN= 3.6V; C_IN= 4.7µF; C_OUT= 2.2µF; C₁= C₂= 1.0µF; R_BSET= R_FSET= 280kΩ; T_A= -40°C to +85°C, unless

otherwise noted. Typical values are at T_A= 25°C.

Backlight Efficiency vs. Supply Voltage

Flash Efficiency vs. Supply Voltage

100

30mA/ch

V_F= 3.7V

150mA total

V_F= 2.9V

300mA total

V_F= 3.0V

2.1mA/ch

7.5mA/ch

V_F= 3.1V

V_F= 2.9V

200mA total

V_F= 2.9V

2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5

2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 4.0 4.1 4.2

Supply Voltage (V)

Turn On to 1.5X Mode Backlight

(30mA/ch; Data 1; V_IN= 3.5V)

Turn On to 1X Mode Backlight

(30mA/ch; Data 1; V_IN= 4.2V)

(2V/div)

OUT

(2V/div)

OUT

(2V/div)

V_SINK

(500mV/div)

V_SINK

(500mV/div)

I_IN

(200mA/div)

I_IN

(100mA/div)

Time (200µs/div)

Turn On to 2X Mode Backlight

(30mA/ch; Data 1; V_IN= 3.2V)

Turn Off from 1.5X Mode Backlight

(30mA/ch; Data 1)

(2V/div)

OUT

(2V/div)

OUT

(2V/div)

V_SINK

(500mV/div)

I_IN

(200mA/div)

I_IN

(200mA/div)

Time (200µs/div)

Time (100µs/div)

2842.2007.09.1.2

1...4 5 678 9 10...22

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