Agamem Microelectronics Inc.
PRELIMINARY
■PIN
DESCRIPTIONS
Pin No.
1
2
3
4
5
6
7
8
Symbol
IN
SP
V
CC
CTL
P0
GND
CLK
ER
I/O
I
—
—
I
O
—
—
O
Output voltage feedback pin
AA1700
Constant Current White LED driver
Description
Soft start and short circuit protection setting
Power supply pin
ON/OFF control pin
Output driver pin
Ground pin
Internal PWM frequency setting pin
Error amplifier output pin
■BLOCK
DIAGRAM
Vcc
3
CLK
7
Regulator
0.5V
0.1V
-
Error
Amp.
+
Oscillator
5
-
+
PWM
COMP.
+
+
P0
IN
1
Output driver
ER
8
0.6V
Soft start
short circuit protection
6
GND
2
SP
4
CTL
©Copyright
Agamem Microelectronics Inc.
2
www.agamem.com.tw
2007/1/22