SAMHOP Microelectronics Corp.
WHITE / BLUE LED DRIVER FOR LI- ION BATTERY APPLICATION
GENERAL DESCRIPTION
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.
Device
Name
Initial LED
Sink Current
Max. LED
Sink Current
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
LED
Number
SM6802
SM6803
SM6804
20mA
20mA
20mA
20mA
20mA
20mA
2
3
4
GENERAL APPLICATIONS
* Small Size Color LCD Backlights
* Mobile Phone, Smart Phone Keypad Backlights.
PIN ASSIGNMENTS
V
DD
GND
EN/CTRL
1
2
3
5
4
LED1
LED2
V
DD
GND
EN/CTRL
1
2
3
6
5
4
LED1
LED2
LED3
SM6802
SOT-25
SM6803
SOT-26 / TSOP 6
PGND
EN/CTRL
V
DD
GND
1
2
3
4
8
7
6
5
LED1
LED2
LED3
LED4
SM6804
MSOP-8
Page 1
V.1.0 July 12,2007
SAMHOP [ SAMHOP MICROELECTRONICS CORP. ]
