AAT1235 datasheet(7/21 Pages) ANALOGICTECH

Part #	AAT1235

Description	High Efficiency White LED Drivers for Backlight and Keypad

Download	21 Pages

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Manufacturer	ANALOGICTECH [Advanced Analogic Technologies]

Direct Link	http://www.analogictech.com

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7 / 21 page

Typical Characteristics

Soft Start Operation

(All Channels = 20mA)

Time (200µs/div)

EN/SET (V)

VOUT (V)

IINDUCTOR (A)

0

10

20

0

0.5

0

2

Low Side Switch On Resistance

vs. Supply Voltage and Temperature

Supply Voltage (V)

40

60

80

100

120

140

160

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

+120

°C

+100

°C

+25

°C

+85

°C

Input Disconnect Switch Resistance vs.

Supply Voltage and Temperature

Supply Voltage (V)

140

160

180

200

220

240

260

280

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

+120

°C

+100

°C

+85

°C

+25

°C

Enable Threshold High vs.

Supply Voltage and Temperature

Supply Voltage (V)

0.7

0.8

0.9

1.0

1.1

1.2

2.7

3.1

3.5

3.9

4.3

4.7

5.1

5.5

+85°C

-40°C

25°C

Enable Threshold Low vs.

Supply Voltage and Temperature

Supply Voltage (V)

0.6

0.7

0.8

0.9

1.0

1.1

2.7

3.1

3.5

3.9

4.3

4.7

5.1

5.5

+85

°C

-40

°C

25

°C

Line Transient

(All Channels = 20mA)

Time (50µs/div)

3.0

3.5

4.0

4.5

13.8

13.9

14.0

14.1

14.2

AAT1235

High Efficiency White LED Drivers

for Backlight and Keypad

1235.2007.02.1.1

7

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