Datasheet > AAT1271A

AAT1271A

更新时间： 2022-04-23 23:00:11

品牌	Logo	应用领域
ANALOGICTECH		调节器闪光灯
页数	文件大小	规格书
19页	2557K
描述
1.5A Step-Up Current Regulator for Flash LEDs

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AAT1271A 数据手册

PROPRIETARY INFORMATION PRODUCT DATASHEET

AAT1271A

SwitchReg

1.5A Step-Up Current Regulator for Flash LEDs

Typical Characteristics

Flash Turn On Characteristic

Movie Mode to Flash Turn On Characteristic

(I_FLOUTX= 750mA/ch; V_IN= 3.6V; L = 1µH)

(I_FLOUTX= 103mA to 750mA/ch; V_IN= 3.6V; L = 1µH)

V_FLEN

(5V/div)

V_OUT

V_FLEN

(2V/div)

V_OUT

(2V/div)

V_SINK

(2V/div)

V_SINK

(500mV/div)

I_FLOUTX

(1A/div)

I_FLOUTX

(1A/div)

Time (50µs/div)

Movie Mode Turn On Characteristic

Movie Mode Transition Characteristic

(I_FLOUTX= 103mA to 188mA/ch; C_OUT= 0.22µF;

V_IN= 3.6V; L = 1µH)

(I_FLOUTX= 103mA/ch; V_IN= 3.6V; L = 1µH)

V_EN/SET

(5V/div)

V_OUT

V_EN/SET

(2V/div)

V_OUT

(2V/div)

V_SINK

(500mV/div)

V_SINK

(500mV/div)

I_FLOUTX

(100mA/div)

I_FLOUTX

(100mA/div)

Time (100µs/div)

Flash Timeout vs. Temperature

EN, FLEN High Threshold Voltage

vs. Input Voltage

(I_FLOUTX= 750mA/ch; V_IN= 3.6V; C_T= 47nF)

1.4

1.3

1.2

1.1

1.0

0.9

0.8

0.7

0.6

0.5

500

450

400

350

300

250

200

85°C

25°C

-40°C

0.4

2.7

-40

-15

3.1

3.5

3.9

4.3

4.7

5.1

5.5

Temperature (°C)

Input Voltage (V)

w w w . a n a l o g i c t e c h . c o m

1271A.2008.07.1.0

1...4 5 678 9 10...19

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