SM16705F

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 (IOUT = 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, ANDGATE and Constant Current Drivers. FEATURES * Constant Current Output : can setup all output current with one resistor for 5 to 90mA. * Maximum Clock Frequency : fCLK = 25 (MHz) (Cascade Connect Operate, Topr = 25oC) * 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 VDD 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 SAMHOP Microelectronics Corp. 8-BIT CONSTANT CURRENT LED DRIVER SM16705P/F/FN PIN DESCRIPTION Pin NO. 1 2 3 I I I/O Pin Name GND SERIAL-IN CLOCK GND terminal Terminal of serial-data input to the shift register. Input terminal of a clock for shift register on rising edge. Input terminal of data strobe. Latches pass data with "H" level input of LATCH-terminal, and hold data with "L" l...