PTC PT6950
The PT6950 is a compact LED driver for 144 single LEDs. The device can be programmed via the I2C or SPI compatible interface. The high logic and low logic control threshold are specially designed for white goods and industry application.DESCRIPTION
The PT6950 offers two blocks each driving 72 LEDs with 1/9 cycle rate.APPLICATIONS
● Micro-computer Peripheral Device PT6950 LED Driver ICFEATURES
● CMOS technology● Low power consumption
● 3-wire SPI-bus interface(DIN, CLK, STB)
● 2-wire I2C interface(SCL, SDA)
● 144 LEDs in dot matrix
● Constant-Current LED Segment Drive
● 16-Step dimming circuitry
● Serial interface for Clock, Data Input, Strobe Pins and low voltage operation ability when user’s MCU power supply is 3.3V.
● Integrated Oscillator Circuit
● Available in 28-pin, SOP&QFN BLOCK DIAGRAM CA1 Display CA2 STB/SA Serial Memory CLK/SCL Data CA8 DIN/SDA Interface CA9 I_F Command control Display Driver CB1 CB2 OSC Timing Generator CB8 CB9 R_EXT VDD GND Current Generator Tel: 886-2-66296288●Fax: 886-2-29174598● No. 233-1, Baociao Rd., Sindian Dist., New Taipei City 23145, Taiwan APPLICATION CIRCUIT FOR DOT-MATRIX DISPLAY APPLICATION: PT6950 FOR SEVEN-SEGMENT DISPLAY APPLICATION: *Notes: 1. I_F pin is select 2-wire (I2C) or 3-wire (SPI) interface, “H (connect with VDD)”=2 wire (I2C) interface, “L(connect with GND)”=3-wire (SPI) interface.