SAMHOP Microelectronics Corp.
WHITE / BLUE LED DRIVER FOR LI- ION BATTERY APPLICATION
TYPICAL APPLICATION
Enable and Logic
Brightness Control
EN/CTRL
VDD
Li-Ion Battery
VDD
LED1
LED2
LED3
SM6804
GND
LED4
GND
ABSOLUTE MAXIMUM RATINGS
Characteristic
Symbol
Rating
Unit
Input Voltage
VDD
-0.3 ~ 7.0
-0.3 ~ 7.0
-0.3 ~ 5.5
150
V
V
Output Voltage
VLEDn
Voltage at all other pins
Maximum Junction Temperature
Storage Temperature Range
Lead Temperature (soldering,10 seconds)
-
TJ
-
V
oC
oC
oC
-40 ~ 150
260
-
Note:
Exceeding these ratings could cause damage to the device. All voltages are with respect to Ground.
Currents are positive into, negative out of the specified terminal.
POWER DISSIPATION TABLE
TA<25oC
TA=70oC
TA=85oC
θ°JA
TA>25oC
Package
(oCW)
Derating factor(mW/oC)
Power rating(mW) Power rating(mW) Power rating(mW)
SOT-25
SOT-26
MSOP-8
220
220
180
4.5
4.5
568
568
695
363
363
444
295
295
361
5.56
Note:
Junction Temperature Calculation; TJ = TA+(PD* θJA)
PD: Power Dissipation, TA: Ambient termperature, θJA : Thermal Resistance-Junction to Ambient
The θJA numbers are guidelines for the thermal performance of the device/PC-board system.
All of the above assume no ambient airflow.
Page 2
V.1.0 July 12,2007
SAMHOP [ SAMHOP MICROELECTRONICS CORP. ]
