A704
www.addmtek.com
DESCRIPTION
The A704 is a PWM high efficiency LED driver
controller. The LED string is driven at constant current
rather than constant voltage, thus providing constant light
output and enhanced reliability.
S
WITCHING
M
ODE
LED D
RIVER
FEATURES
Low Startup Current (5uA in typical).
Low Operating Current (3mA in typical).
Lead-Edge Blanking.
Internal OVP Detected.
150°C OTP Sensor with Hysteresis.
Under Voltage Lockout (UVLO).
Fixed PWM Frequency.
PFC > 0.9 with Suitable External Components.
TYPICAL APPLICATION CIRCUIT
APPLICATIONS
B22, E27 lamp device
R
D
EN
V
DD
General purpose lighting
R
1
Gate
A704
CS
GND
C
s
*Note
D
R
PACKAGE PIN OUT
D
BR
L1
Q
R
G
R
CS
D
F
L
LED
C
OUT
85V
AC
Bridge
|
235V
AC
Diode
Gate
GND
EN
1
2
3
5
V
DD
C
X
C
IN
4
CS
*Note: C
S
MUST
be very close to A704’s V
DD
pin and GND pin.
Please refer to ADDtek’s reference layout.
SOT-23-5
(Top View)
ORDER INFORMATION
W
SOT-23-5
5 pin
A704WFT
Note: The letter “F” is marked for Lead Free parts, and letter “T” is marked for Tape & Reel.
Contack Info:Samsun Zhang 13556850583 IC9898@163.com
Copyright
©
2008 ADDtek Corp.
1
A704_V0.6 -- AUGUST 2008
ADDTEK [ ADDTEK CORP ]
