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BL8549

PACKAGE, MARK and ORDERING INFORMATION

Package

DFN2x2-6

Mark

Explanation

Ordering

Information

Package

SOT23-6

Mark

Explanation

Ordering

Information

LT:

Product Code

Product ID:

BL8549CKCTR

SOT23-6

SW

FB

CE

GND

VIN

XXYW

COMP

2

3

6

5

4

1

LT:

Product Code

Product ID:

BL8549CB6TR

YW:

Date Code

Devices/Reel:

3000

YW:

Date Code

Devices/Reel:

3000

PINOUT DESCRIPTION

NAME

PIN #

DESCRIPTION

DFN2x2-6

SOT23-6

FB

1

3

Feedback input with reference voltage set to 0.2V

Comp

2

1

Compensation pin, to connect a 220nF capacitor to make loop stable.

GND

3

2

Ground.

SW

4

6

Power switching node to connect inductor

CE

5

5

Chip enable, but a PWM signal with various duty cycle can directly sent to CE pin to

achieve the backlight dimming

VIN

6

4

Power input, 1uf input capacitor is recommended.

BLOCK DIAGRAM

FB

SW

Vin

GND

CE

Comp

LTYW

LT

YW