SM6804L datasheet(2/13 Pages) SAMHOP

No de pièce	SM6804L

Description	WHITE / BLUE LED DRIVER FOR LI- ION BATTERY APPLICATION

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Fabricant	SAMHOP [SamHop Microelectronics Corp.]

Site Internet	http://www.samhop.com.tw

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SAMHOP Microelectronics Corp.

WHITE / BLUE LED DRIVER FOR LI- ION BATTERY APPLICATION

The SM6802/ SM6803/ SM6804 are White/Blue

LED Driver for Li-Ion Battery Application. No

external component is required. Especially good for

use Li-ion battery powered LCD display's backlight

white LEDs. The special circuit design provides

over 90% efficiency in low noise.

The SM6802/SM6803/SM6804 is Integrated with

16-step programmable output sink current for LEDs

brightness control.

Target end applications are color LCD display,

such as mobile phone with color display, smart

phone, PDA, etc.

PIN ASSIGNMENTS

GENERAL DESCRIPTION

FEATURES

* No external component required.

* Programmable output current control, programming

range 25% to 100% in 16 steps for LED brightness

control.

* Initial LED sink current 20 mA

* 2channels (SOT-25), 3 channels (SOT-26/TSOP 6),

4 channels (MSOP-8) available.

* 90% efficiency

* Supply voltage range 3.0 V ~ 5.0 V

* 0.1uA standby current

GENERAL APPLICATIONS

SM6802

2

Device

Name

LED

Number

20mA

Max. LED

Sink Current

20mA

Initial LED

Sink Current

* Small Size Color LCD Backlights

* Mobile Phone, Smart Phone Keypad Backlights.

SM6803

3

20mA

SM6804

4

20mA

SOT-26 / TSOP 6

1

3

2

VDD

EN/CTRL

GND

LED1

LED3

LED2

6

4

5

SM6803

MSOP-8

1

3

2

PGND

VDD

EN/CTRL

LED1

LED3

LED2

8

6

7

SM6804

LED4

GND

4

5

SOT-25

1

3

2

VDD

EN/CTRL

GND

LED1

LED2

5

4

SM6802

Page 1

V.1.0 July 12,2007

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