SAMHOP Microelectronics Corp.
8-BIT CONSTANT CURRENT LED DRIVER
SM16705P/F/FN
GENERAL DESCRIPTION
The SM16705P/F/FN are specifically designed for
LED display constant current drivers.
This constant current output circuits is able to setup
by external resistor (I
OUT
= 5 ~ 90mA).
This IC is monolithic integrated circuit designed to be
used together with Bi-CMOS process.
The devices consist of 8bit shift register, latch, AND-
GATE and Constant Current Drivers.
FEATURES
* Constant Current Output :
can setup all output current with one resistor
for 5 to 90mA.
* Maximum Clock Frequency :
f
CLK
= 25 (MHz)
(Cascade Connect Operate,
Topr = 25
o
C)
* 5V CMOS Compatible Input
* 16 pin DIP, SOP or SSOP package
* Constant Output Current Matching :
Output-GND
Voltage
≧
0.4V
≧
0.7V
Current
Matching
±
6.0%
±
6.0%
Output Current
5 ~ 40mA
5 ~ 90mA
PIN ASSIGNMENTS
GND
SERIAL-IN
CLOCK
LATCH
OUT0
OUT1
OUT2
OUT3
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
V
DD
R-EXT
SERIAL-OUT
ENABLE
OUT7
OUT6
OUT5
OUT4
Part Number
SM16705P
SM16705F
SM16705FN
Package Type
16pin DIP
16pin SOP
16pin SSOP
SM16705
Page 1
V.2.0 MAY,2003