SAMHOP Microelectronics Corp.
WHITE / BLUE LED DRIVER FOR LI- ION BATTERY APPLICATION
TYPICAL APPLICATION
EN/CTRL
V
DD
V
DD
LED1
Enable and Logic
Brightness Control
Li-Ion Battery
SM6804
LED2
LED3
LED4
GND
GND
ABSOLUTE MAXIMUM RATINGS
Characteristic
Input Voltage
Output Voltage
Voltage at all other pins
Maximum Junction Temperature
Storage Temperature Range
Lead Temperature
(soldering,10 seconds)
Symbol
V
DD
V
LEDn
-
T
J
-
-
Rating
-0.3 ~ 7.0
-0.3 ~ 7.0
-0.3 ~ 5.5
150
-40 ~ 150
260
Unit
V
V
V
o
o
o
C
C
C
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
Package
θ°JA
(
o
CW)
TA>25
o
C
Derating factor(mW/
o
C)
TA<25
o
C
TA=70
o
C
TA=85
o
C
Power rating(mW) Power rating(mW) Power rating(mW)
SOT-25
SOT-26
MSOP-8
220
220
180
4.5
4.5
5.56
568
568
695
363
363
444
295
295
361
Note:
Junction Temperature Calculation; T
J
= T
A
+(P
D
*
θ
JA
)
P
D
: Power Dissipation, T
A
: Ambient termperature,
θ
JA
: Thermal Resistance-Junction to Ambient
The
θ
JA
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. ]
