SAMHOP Microelectronics Corp.
WHITE / BLUE LED DRIVER FOR LI- ION BATTERY APPLICATION
GENERAL DESCRIPTION
FEATURES
* No external component required.
* Programmable output current control, programming
range 25% to 100% in 16 steps for LED brightness
control.
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.
* Initial LED sink current 20 mA
* 2channels (SOT-25), 3 channels (SOT-26/TSOP 6),
4 channels (MSOP-8) available.
* 90% efficiency
The SM6802/SM6803/SM6804 is Integrated with
16-step programmable output sink current for LEDs
brightness control.
* Supply voltage range 3.0 V ~ 5.0 V
* 0.1uA standby current
Target end applications are color LCD display,
such as mobile phone with color display, smart
phone, PDA, etc.
Device
Name
LED
Number
Initial LED
Sink Current Sink Current
Max. LED
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
VDD
GND
1
2
3
5
4
LED1
VDD
1
2
3
6
5
4
LED1
LED2
LED3
GND
EN/CTRL
LED2
EN/CTRL
SM6802
SOT-25
SM6803
SOT-26 / TSOP 6
PGND
EN/CTRL
VDD
1
2
3
4
8
7
6
5
LED1
LED2
LED3
LED4
GND
SM6804
MSOP-8
Page 1
V.1.0 July 12,2007
SAMHOP [ SAMHOP MICROELECTRONICS CORP. ]
